Apr. 06, 2023
Professor Omer Inan is set to take the stage at the upcoming TEDxAtlanta 2023: We Rise event on May 19.
As the Linda J. and Mark C. Smith Chair in bioscience and bioengineering in Tech’s School of Electrical and Computer Engineering (ECE), Inan designs clinically relevant medical devices and systems and translates them from the lab to patient care applications. In his talk, Inan will be discussing his groundbreaking research on wearable healthcare technologies and the potential they hold for revolutionizing the field.
Inan is a member of the prestigious Medical and Biological Engineering (AIMBE) College of Fellows (elected in 2022) for his “outstanding contributions to the non-invasive assessment of the mechanical aspects of cardiovascular health and performance using wearable devices.” Additional achievements include an Academy Award for Technical Achievement from The Academy of Motion Picture Arts and Sciences (The Oscars, 2021), the Georgia Power Professor of Excellence for the College of Engineering (2019), and the National Science Foundation Faculty Early Career Development Program award (NSF CAREER, 2018).
TEDxAtlanta 2023: WE RISE brings together an impressive group of participants from diverse backgrounds, experiences, and perspectives. The speakers include entrepreneurs, activists, educators, artists, scientists, and many other changemakers who have risen above challenges to make a positive impact on the world.
The event's participants will share their stories and insights on how they have overcome adversity, embraced innovation, and challenged the status quo to make a difference in their communities and beyond. Through their talks, they will inspire and empower attendees to rise above their own challenges and take action towards creating a better future for all.
TEDxAtlanta 2023: WE RISE will take place on Friday, May 19 from 9 a.m. – 6:30 p.m. at the Rialto Center for the Arts (80 Forsyth Street Northwest Atlanta, GA 30303). Learn more and purchase tickets at tedxatlanta.com.
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Dan Watson
Apr. 04, 2023
Georgia Tech Battery Day opened with a full house on March 30, 2023, at the Global Learning Center in the heart of Midtown Atlanta. More than 230 energy researchers and industry participants convened to discuss and advance energy storage technologies via lightning talks, panel discussions, student poster sessions, and networking sessions throughout the day. Matt McDowell, associate professor in the Woodruff School of Mechanical Engineering and the School of Materials Science and Engineering as well as the initiative lead for energy storage at the Strategic Energy Institute and the Institute of Materials, started the day with an overview of the relevant research at Georgia Tech. His talk shed light on Georgia becoming the epicenter of the battery belt of the Southeast with recent key industry investments and the robust energy-storage research community present at Georgia Tech.
According to the Metro Atlanta Chamber of Commerce, since 2020, Georgia has had $21 billion invested or announced in EV-related projects with 26,700 jobs created. With investments in alternate energy technologies growing exponentially in the nation, McDowell revealed Georgia Tech is well-positioned to make an impact on the next generation energy storage technologies and extended an open invitation to industry members to partner with researchers. As one of the most research-intensive academic institutions in the nation, Georgia Tech has more than $1.3 billion in research and other sponsored funds and produces the highest number of engineering doctoral graduates in the nation.
“More than half of Georgia Tech's strategic initiatives are focused on improving the efficiency and sustainability of energy storage, supporting clean energy sources, and mitigating climate change," said Chaouki Abdallah, executive vice president for research at Georgia Tech. "As a leader in battery technologies research, we are bringing together engineers, scientists, and researchers in academia and industry to conduct innovative research to address humanity's most urgent and complex challenges, and to advance technology and improve the human condition."
Rich Simmons, director of research and studies at the Strategic Energy Institute moderated the first panel discussion that included industry panelists from Panasonic, Cox Automotive, Bluebird Corp., Delta Airlines and Hyundai Kia. The panelists analyzed the opportunities and challenges in the electric transportation sector and explained their current focus areas in energy storage. The panel affirmed that while EVs have been around for more than three decades, the industry is still in its infancy and there is a huge potential to advance technology in all areas of the EV sector.
The discussion also brought forth important factors like safety, lifecycle, and sustainability in driving innovations in the energy storage sector. The attendees also discussed supply chain issues, a hot topic in almost all sectors of the nation, and the need to develop a diversity of resources for more resilient systems. The industry panelists affirmed a strong interest in partnering on research and development projects as well as gaining access to university talent.
Gleb Yushin, professor in the School of Material Science and Engineering and co-founder of Sila Nanotechnologies Inc., presented his battery research and development success story at Georgia Tech. Sila is a Georgia Tech start-up founded in 2011 and has produced the world’s first commercially available high-silicon-content anode for lithium-ion batteries in 2021. Materials manufactured in its U.S. facilities will power electric vehicles starting with the Mercedes-Benz G-class series in 2023.
The program included lightning talks on cutting-edge research in battery materials, specifically solid-state electrolytes and plastic crystal embedded elastomer electrolytes (PCEEs) by Seung Woo Lee, associate professor in the George W. Woodruff School of Mechanical Engineering. Santiago Grijalva, professor in the School of Electrical and Computer Engineering, discussed the challenges and opportunities for the successful use of energy storage for the grid.
Tequila Harris, initiative lead for Energy and Manufacturing and professor in the George W. Woodruff School of Mechanical Engineering, spoke to energy materials and carbon-neutral applications. Presenting a case for roll-to-roll manufacturing of battery materials, Harris said that the need for quick, high yield manufacturing processes and alternative materials and structures were important considerations for the industry.
Materials, manufacturing, and market opportunities were the topic for the next panel moderated by McDowell and included panelists from Albemarle, Novelis, Solvay, Truist Securities, and Energy Impact Partners. Analyzing the current challenges, the panelists brought up hiring and workforce development, increasing capacity and building the ecosystem, decarbonizing existing processes, and understanding federal policies and regulations.
Lightning talks later in the afternoon by researchers at Georgia Tech touched on the latest developments in the cross-disciplinary research bridging mechanical engineering, chemical engineering, AI manufacturing, and material science in energy storage research. Topics included safe rechargeable batteries with water-based electrolytes (Nian Liu, assistant professor, School of Chemical & Biomolecular Engineering), AI-accelerated manufacturing (Aaron Stebner, associate professor, School of Materials Science and Engineering), battery recycling (Hailong Chen, associate professor, School of Materials Science and Engineering), and parametric life-cycle models for a solid-state battery circular economy (Ilan Stern, research scientist from GTRI).
Another industry panel on grid, infrastructure and communities moderated by Faisal Alamgir, professor in the School of Materials Science and Engineering included panelists from Southern Company, Stryten Energy, and the Metro Atlanta Chamber of Commerce. Improving the grid resiliency and storage capacity; proximity to the energy source; optimizing and implementing new technology in an equitable way; standardization of the evolving business models; economic development and resource building through skilled workforce; educating the consumer; and getting larger portions of the grid with renewable energy were top of mind with the panelists.
“Energy-storage-related R&D efforts at Georgia Tech are extensive and include next-gen battery chemistry development, battery characterization, recycling, and energy generation and distribution,” said McDowell. “There is a tremendous opportunity to leverage the broad expertise we bring to advance energy storage systems. Battery Day has been hugely successful in not only bringing this expertise to the forefront, but also in affirming the need for continued interaction with the companies engaged in this arena. Our mission is to serve as a centralized focal point for research interactions between companies in the battery/EV space and faculty members on campus.”
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Priya Devarajan || SEI Communications Manager
Mar. 21, 2023
Idling at a crossroads no longer, the automotive industry is embracing electrification like never before. With more electric vehicles purchased in 2022 than any year prior, consumers are beginning to follow their lead. Yet, while opportunity abounds, new challenges will require an innovative approach to ensure a sustainable and accessible electric future for all.
With historic investments from major players in the EV space, including Rivian, Kia, and Hyundai, the state of Georgia is uniquely positioned to serve as a leader in this effort. As the state's leading research institute, Georgia Tech is on the cutting edge of the movement.
The transportation sector is the largest greenhouse gas emitter in the U.S. at nearly 30%, with passenger vehicles accounting for around 80% of the sector's total output1 as of 2019. Electric vehicles are widely regarded as a budding solution to reduce emissions, but even as both demand and production continue to increase, EVs currently account for around 1% of the cars on America's roadways.
From the supply chain to the infrastructure needed to support alternative-fuel vehicles alongside consumer hesitancy, achieving the goals set by both the public and private sectors — including the Biden Administration's target of EVs making up at least 50% of new car sales by 2030 — will not be easy. Through research and development, policy, and collaboration, Tech experts are working toward finding solutions that will serve as catalysts during this transitionary period for the environment and the way Americans drive.
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Steven Gagliano - Communications Officer
Institute Communications
Feb. 06, 2023
Researchers at the Georgia Tech Research Institute (GTRI) are using additive manufacturing techniques to create unique waveguide structures that would be difficult or impossible to make using conventional fabrication processes. The new techniques are especially useful for integrating updated components into equipment that might otherwise require significant design changes.
In high-powered millimeter wave and microwave radars and antennas, waveguides direct electromagnetic energy from one component to another inside the equipment. Until recently, the waveguides had been fabricated from extruded copper or aluminum tubing, but these traditional manufacturing techniques can’t always accommodate the complex configurations needed for optimal design with minimal energy transmission losses.
“To propagate electromagnetic waves efficiently, the waveguide must have a very precise internal geometry,” explained GTRI Senior Research Engineer Kyle Azevedo. “Yet, the waveguide must also be very smooth in terms of its internal surface finish. The cavity that transmits the energy has to be very well controlled to avoid significant losses. And the waveguides must also fit into confined spaces.”
Additive Techniques Offer Specific RF Advantages
To allow more complex designs, GTRI researchers are evaluating two alternative fabrication techniques: 3D-printed structures fabricated from metal and 3D-printed polymer components that are metal coated. Each has advantages and disadvantages and must be chosen for the specific application. The researchers are testing waveguides made using both techniques for mechanical performance in resisting fatigue damage, thermal performance in dissipating heat, electrical performance – and their RF energy loss.
Flexibility afforded by additive techniques can help designers accommodate waveguides within a crowded design that includes many other components. In one current project, the researchers found that they needed to move a radar’s feed horn several inches to accommodate other design considerations. But that complicated the waveguide design.
“That was a really big challenge, because we had to change some of the existing waveguides, and we couldn’t do that with traditional tubing pieces that were available without coming up with a whole new design,” Azevedo said. “But by using additive processes that allow more customization, we were able to make things smaller and optimize the design in a single iteration.”
In another project – in consideration for use on Army counter-battery radar – researchers at U.S. Army DEVCOM C5ISR Center used additive techniques to accommodate an updated component of a different size and shape than the original to improve RF performance. The researchers designed a 3D-printed waveguide that accommodated the existing connectors and integrated into its legacy systems, then worked with the Army’s Rock Island Arsenal to optimize fabrication and quality control. That new component was successfully tested at Tobyhanna Army Depot and Yuma Proving Ground, and is now being evaluated as an OEM alternative. This may allow additive manufacturing to augment the supply system.
In addition to facilitating designs that might otherwise have been more challenging, the GTRI researchers expect additive manufacturing will allow them to accelerate the iterative development of prototypes by moving some waveguide fabrication in-house.
Overcoming Challenges with New Fabrication Methods
For all-metal waveguides, additive manufacturing can have some disadvantages, but those may not be as significant as they might first appear. To limit transmission losses, inside surfaces of conventional waveguides are smooth, but because of the way metal 3D printing works, smooth internal surfaces can be difficult to fabricate. The design flexibility of additive processes can make up for that.
“In one of our designs, we found that even though we might have some limitations on the roughness of the surface finish, we could gain back the transmission losses by optimizing the waveguide shape,” Azevedo explained. “The final design would not have been possible using traditional waveguide fabrication techniques.”
Though applying metal coatings to waveguides produced from polymers or resins can provide smoother surfaces, this process comes with its own set of challenges.
“One of the issues we are tackling now is that a lot of the resins and polymers that have desirable properties for plating contain silica,” said Max Tannenbaum, a GTRI research engineer. “They are ceramic-like when cured, but when you remove the resin, a lot of the conventional solvents don’t remove the silica, and you end up with a chalky powder on the surface. If you can’t remove that before you try to plate it, the plating won’t adhere.”
Building a Knowledge Base for RF Applications of Additive Processes
To support expanded applications for waveguides fabricated using additive techniques, the researchers are using both simulation and experimentation to develop comprehensive design information.
“The traditional method for making waveguides has been around since World War II, when the original systems got up and running, and those techniques have been refined over the decades since then,” said Azevedo. “As a result, there’s a wealth of detailed data on what works, including the metallurgic properties. We want to develop a comparable depth of understanding for the new additive manufacturing techniques that offer so many advantages.” By putting together what they have learned, the research team plans to share their knowledge with other RF engineers who may be interested in the additive approaches.
“Our effort is focusing on two parallel paths: looking at the mechanical constraints involved with fabrication and the RF limitations,” said GTRI Research Engineer Austin Forgey. “We are merging the new experimental data we’re getting with RF simulations, and combining that with testing mechanical properties. That will give us a full design package that can be used by the designers who need it.”
Beyond waveguides, the GTRI researchers are working on other applications of additive manufacturing to RF design. With researchers in Georgia Tech’s School of Mechanical Engineering, they are fabricating cold plates that are 3D printed from aluminum and used to cool high-powered electronics. The 3D printing allows novel fluid flow in a single part, not possible with conventional fabrication.
Similarly, they are also looking at additive techniques to make shielding needed to protect components from electromagnetic interference.
While they expect to expand their use of additive fabrication approaches to provide new design options for RF applications, the researchers don’t see additive manufacturing doing away with conventional fabrication techniques any time soon.
“My opinion is that there will certainly be a mix because additive manufacturing techniques aren’t the answer for everything,” said Tannenbaum. “But they are solutions to a lot of specific problems that we encounter, allowing us to build parts that are cheaper, lighter, and available more quickly.”
Writer: John Toon
GTRI Communications
Georgia Tech Research Institute
Atlanta, Georgia USA
About GTRI: The Georgia Tech Research Institute (GTRI) is the nonprofit, applied research division of the Georgia Institute of Technology (Georgia Tech). Founded in 1934 as the Engineering Experiment Station, GTRI has grown to more than 2,800 employees, supporting eight laboratories in over 20 locations around the country and performing more than $700 million of problem-solving research annually for government and industry. GTRI's renowned researchers combine science, engineering, economics, policy, and technical expertise to solve complex problems for the U.S. federal government, the state, and industry. For more information, please visit www.gtri.gatech.edu.
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(Interim) Director of Communications
Michelle Gowdy
Michelle.Gowdy@gtri.gatech.edu
404-407-8060
Jan. 03, 2023
Though it is a cornerstone of virtually every process that occurs in living organisms, the proper folding and transport of biological proteins is a notoriously difficult and time-consuming process to experimentally study.
In a new paper published in eLife, researchers in the School of Biological Sciences and the School of Computer Science have shown that AF2Complex may be able to lend a hand.
Building on the models of DeepMind’s AlphaFold 2, a machine learning tool able to predict the detailed three-dimensional structures of individual proteins, AF2Complex — short for AlphaFold 2 Complex — is a deep learning tool designed to predict the physical interactions of multiple proteins. With these predictions, AF2Complex is able to calculate which proteins are likely to interact with each other to form functional complexes in unprecedented detail.
“We essentially conduct computational experiments that try to figure out the atomic details of supercomplexes (large interacting groups of proteins) important to biological functions,” explained Jeffrey Skolnick, Regents’ Professor and Mary and Maisie Gibson Chair in the School of Biological Sciences, and one of the corresponding authors of the study. With AF2Complex, which was developed last year by the same research team, it’s “like using a computational microscope powered by deep learning and supercomputing.”
In their latest study, the researchers used this ‘computational microscope’ to examine a complicated protein synthesis and transport pathway, hoping to clarify how proteins in the pathway interact to ultimately transport a newly synthesized protein from the interior to the outer membrane of the bacteria — and identify players that experiments might have missed. Insights into this pathway may identify new targets for antibiotic and therapeutic design while providing a foundation for using AF2Complex to computationally expedite this type of biology research as a whole.
Computing complexes
Created by London-based artificial intelligence lab DeepMind, AlphaFold 2 is a deep learning tool able to generate accurate predictions about the three-dimensional structure of single proteins using just their building blocks, amino acids. Taking things a step further, AF2Complex uses these structures to predict the likelihood that proteins are able to interact to form a functional complex, what aspects of each structure are the likely interaction sites, and even what protein complexes are likely to pair up to create even larger functional groups called supercomplexes.
“The successful development of AF2Complex earlier this year makes us believe that this approach has tremendous potential in identifying and characterizing the set of protein-protein interactions important to life,” shared Mu Gao, a senior research scientist at Georgia Tech. “To further convince the broad molecular biology community, we [had to] demonstrate it with a more convincing, high impact application.”
The researchers chose to apply AF2Complex to a pathway in Escherichia coli (E. coli), a model organism in life sciences research commonly used for experimental DNA manipulation and protein production due to its relative simplicity and fast growth.
To demonstrate the tool’s power, the team examined the synthesis and transport of proteins that are essential for exchanging nutrients and responding to environmental stressors: outer membrane proteins, or OMPs for short. These proteins reside on the outermost membrane of gram-negative bacteria, a large family of bacteria characterized by the presence of inner and outer membranes, like E. coli. However, the proteins are created inside the cell and must be transported to their final destinations.
“After more than two decades of experimental studies, researchers have identified some of the protein complexes of key players, but certainly not all of them,” Gao explained. AF2Complex “could enable us to discover some novel and interesting features of the OMP biogenesis pathway that were missed in previous experimental studies.”
New insights
Using the Summit supercomputer at the Oak Ridge National Laboratory, the team, which included computer science undergraduate Davi Nakajima An, put AF2Complex to the test. They compared a few proteins known to be important in the synthesis and transport of OMPs to roughly 1,500 other proteins — all of the known proteins in E. coli’s cell envelope — to see which pairs the tool computed as most likely to interact, and which of those pairs were likely to form supercomplexes.
To determine if AF2Complex’s predictions were correct, the researchers compared the tool’s predictions to known experimental data. “Encouragingly,” said Skolnick, “among the top hits from computational screening, we found previously known interacting partners.” Even within those protein pairs known to interact, AF2Complex was able to highlight structural details of those interactions that explain data from previous experiments, lending additional confidence to the tool’s accuracy.
In addition to known interactions, AF2Complex predicted several unknown pairs. Digging further into these unexpected partners revealed details on what aspects of the pairs might interact to form larger groups of functional proteins, likely active configurations of complexes that have previously eluded experimentalists, and new potential mechanisms for how OMPs are synthesized and transported.
“Since the outer membrane pathway is both vital and unique to gram-negative bacteria, the key proteins involved in this pathway could be novel targets for new antibiotics,” said Skolnick. “As such, our work that provides molecular insights about these new drug targets might be valuable to new therapeutic design.”
Beyond this pathway, the researchers are hopeful that AF2Complex could mean big things for biology research.
“Unlike predicting structures of a single protein sequence, predicting the structural model of a supercomplex can be very complicated, especially when the components or stoichiometry of the complex is unknown,” Gao noted. “In this regard, AF2Complex could be a new computational tool for biologists to conduct trial experiments of different combinations of proteins,” potentially expediting and increasing the efficiency of this type of biology research as a whole.
AF2Complex is an open-source tool available to the public and can be downloaded here.
This work was supported in part by the DOE Office of Science, Office of Biological and Environmental Research (DOE DE-SC0021303) and the Division of General Medical Sciences of the National Institute Health (NIH R35GM118039). DOI: https://doi.org/10.7554
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Writer: Audra Davidson
Communications Officer
College of Sciences at Georgia Tech
Editor: Jess Hunt-Ralston
Director of Communications
College of Sciences at Georgia Tech
Sep. 27, 2022
The Scalable Asymmetric Lifecycle Engagement Microelectronics Workforce Development program (SCALE) has announced the program will extend another five years and expand with $10.8 million additional Department of Defense (DoD) funding, with a ceiling of $99 million.
SCALE officials said this expansion of the nation’s preeminent program will further its goal to develop a next-generation workforce that can return the United States to prominence in global microelectronics manufacturing.
Georgia Tech participates in the partnership, which is led by Purdue University and managed by NSWC Crane. SCALE facilitates the training of highly skilled U.S. microelectronics engineers, hardware designers and manufacturing experts. SCALE brings together a public-private-academic partnership of 17 universities and 34 partners within the defense industry and government.
“This is an extremely exciting time in the country and at Tech for microchip design and manufacturing,” said Arijit Raychowdhury, the Steve W. Chaddick School Chair of Tech’s School of Electrical and Computer Engineering (ECE). “These newly announced funds for the SCALE program will help Georgia Tech recruit a new, diverse group of students ready to work in defense microelectronics. We’re thrilled to be a SCALE partner university and honored to be leading many of the project’s specialty areas.”
SCALE provides unique courses, mentoring, internship matching and targeted research projects for college students interested in five microelectronics specialty areas. Georgia Tech ECE faculty members will be the primary investigators for three of the areas:
- system on a chip will be led by Raychowdhury;
- radiation-hardening will be led by John Cressler;
- and heterogeneous integration/advanced packaging will be led by Madhavan Swaminathan.
The other two focus areas are embedded system security/trusted AI and supply chain awareness.
Industry and government partners regularly meet and update a list of knowledge, skills, and abilities important for new entrants to the workforce. The SCALE universities then update their curriculum to ensure the students are prepared for upcoming needs in the rapidly advancing microelectronics field.
Peter Bermel, SCALE director and the Elmore Associate Professor of Electrical and Computer Engineering at Purdue, said the United States will need 50,000 trained semiconductor engineers to meet overwhelming and rapidly growing demand.
“The United States is committed to expanding and strengthening its semiconductor industry and workforce rapidly over the next five years,” Bermel said. “SCALE takes a holistic approach to the microelectronics workforce gap by comprehensively addressing system challenges for workforce training and recruiting.”
Goals for the next five years include:
- Expanding student participation in SCALE fivefold to more than 1,000.
- Developing learning models for K-12 classrooms.
- Collaborating with community colleges nationwide to develop microelectronics classes.
The demand for microelectronics increased by 26.2% in 2021. But while the United States consumes about half of the chips produced worldwide, the country only manufactures about 12%, highlighting the pressing need for the U.S. to strengthen its domestic semiconductor supply chains and increase industrial capacity.
The funding announcement is the latest highlight in Georgia Tech’s leadership role in bolstering microelectronics and workforce development. Tech’s large engineering and science faculty bring a broad set of research expertise to strengthen the country’s semiconductor capacity. The Institute is uniquely positioned to train the microelectronics workforce, drive future microelectronics advances, and provide fabrication and packaging facilities for industry, academic and government partners to develop and test new solutions.
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The Georgia Institute of Technology, or Georgia Tech, is a top 10 public research university developing leaders who advance technology and improve the human condition. The Institute offers business, computing, design, engineering, liberal arts, and sciences degrees. Its nearly 44,000 students, representing 50 states and 149 countries, study at the main campus in Atlanta, at campuses in France and China, and through distance and online learning. As a leading technological university, Georgia Tech is an engine of economic development for Georgia, the Southeast, and the nation, conducting more than $1 billion in research annually for government, industry, and society.
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Dan Watson
dwatson@ece.gatech.edu
May. 26, 2022
Multiple members of the School of Electrical and Computer Engineering (ECE) contributed to the four-year project.
Georgia Institute of Technology has been named the EcoCAR Mobility Challenge Year Four champion by the U.S. Department of Energy (DOE). Tech’s award-winning interdisciplinary team consists of approximately 60 undergraduate and graduate students from the College of Engineering, College of Computing, Scheller College of Business, and Georgia State University.
Eleven North American university EcoCAR teams gathered for the final challenge in Arizona from May 9-20, 2022. The event marked the culmination of the competition, which tasked the universities with applying propulsion system electrification, autonomous driving control, and vehicle-to-infrastructure connectivity, to improve the energy efficiency of a 2019 Chevrolet Blazer while maintaining safety, utility, and consumer acceptability.
Over the four-year competition — sponsored by the DOE, General Motors (GM) and MathWorks — each team transformed its vehicle from a design concept into a reality. The final year of competition challenged teams to test, prove, and refine their work from the previous three years, mimicking a real-world automotive product development cycle.
ECE professor David Taylor is a faculty advisor for Georgia Tech’s EcoCAR team, along with professors Michael Leamy in the George W. Woodruff School of Mechanical Engineering (ME), and Thomas Fuller in the School of Chemical and Biomolecular Engineering (ChBE).
“The role of ECE in this competition is significant, ranging from powertrain electrification to driving automation. Our team’s vehicle excelled in these areas, winning the events concerned with energy consumption and autonomous operation,” said Taylor. “The EcoCAR program provides valuable experiences for ECE students because the real-world challenges of the project effectively supplement classroom learning.”
Georgia Tech’s EcoCAR team is a $1 million research program housed under Georgia Tech’s Vertically Integrated Projects (VIP) Program. VIP allows undergraduate and graduate students to participate in ambitious, long-term, multidisciplinary project teams that are led by faculty. The VIP program originated in ECE under the leadership of professor Edward Coyle.
ECE graduate research assistant (GRA) Nicholas Hummel played a key leadership role on the team along with fellow GRA Nishan Nekoo in ME. Both Hummel and Nekoo received their master’s degrees this spring. Hummel also gave the first-place presentation on Connected and Automated Vehicle Systems with recent ECE bachelor’s degree graduate Joyce Zhao.
“I've been on the team for the past two years, and have seen it come from a nearly fully virtual format at the beginning of the pandemic to the success we've achieved this year,” said Hummel, who led the team’s driving automation efforts. “If I had not joined this team, I would never have had the opportunity to grow so much as a leader and increase my passion for automation and robotics.”
Additionally, recent ECE bachelor’s degree graduate Braeden Dickson, along with recent ME bachelor’s degree graduate Anna Cobb, gave the first-place presentation on Propulsion Controls and Modeling. Braeden worked on powertrain controls to convert the conventional Chevy Blazer to a hybrid electric vehicle architecture. With his efforts, Georgia Tech vehicle was the only vehicle of the competition to improve energy consumption over the stock Blazer.
Read more about the award-winning team, view pictures from the finale, and learn about future plans.
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Dan Watson
dwatson@ece.gatech.edu
Mar. 29, 2022
5G+ (5G/Beyond 5G) is the fastest-growing segment and the only significant opportunity for investment growth in the wireless network infrastructure market, according to the latest forecast by Gartner, Inc. But currently 5G+ technologies rely on large antenna arrays that are typically bulky and come only in very limited sizes, making them difficult to transport and expensive to customize.
Researchers from Georgia Tech’s College of Engineering have developed a novel and flexible solution to address the problem. Their additively manufactured tile-based approach can construct on-demand, massively scalable arrays of 5G+ (5G/Beyond 5G)‐enabled smart skins with the potential to enable intelligence on nearly any surface or object. The study, recently published in Scientific Reports, describes the approach, which is not only much easier to scale and customize than current practices, but features no performance degradation whenever flexed or scaled to a very large number of tiles.
“Typically, there are a lot of smaller wireless network systems working together, but they are not scalable. With the current techniques, you can’t increase, decrease, or direct bandwidth, especially for very large areas,” said Manos Tentzeris, Ken Byers Professor in Flexible Electronics in the School of Electrical and Computer Engineering. “Being able to utilize and scale this novel tile-based approach makes this possible.”
Tentzeris says his team’s modular application equipped with 5G+ capability has the potential for immediate, large-scale impact as the telecommunications industry continues to rapidly transition to standards for faster, higher capacity, and lower latency communications.
BUILDING THE TILES
In Georgia Tech’s new approach, flexible and additively manufactured tiles are assembled onto a single, flexible underlying layer. This allows tile arrays to be attached to a multitude of surfaces. The architecture also allows for very large 5G+ phased/electronically steerable antenna array networks to be installed on-the-fly. According to Tentzeris, attaching a tile array to an unmanned aerial vehicle (UAV) is even a possibility to surge broadband capacity in low coverage areas.
In the study, the team fabricated a proof-of-concept, flexible 5×5-centimeter tile array and wrapped it around a 3.5-centimeter radius curvature. Each tile includes an antenna subarray and an integrated, beamforming integrated circuit on an underlying tiling layer to create a smart skin that can seamlessly interconnect the tiles into very large antenna arrays and massive multiple-input multiple-outputs (MIMOs) — the practice of housing two or more antennas within a single wireless device. Tile-based array architectures on rigid surfaces with single antenna elements have been researched before, but do not include the modularity, additive manufacturability, or flexible implementation of the Georgia Tech design.
The proposed modular tile approach means tiles of identical sizes can be manufactured in large quantities and are easily replaceable, reducing the cost of customization and repairs. Essentially, this approach combines removable elements, modularity, massive scalability, low cost, and flexibility into one system.
5G+ IS JUST THE BEGINNING
While the tiling architecture has demonstrated the ability to greatly enhance 5G+ technologies, its combination of flexible and conformal capabilities has the potential to be applied in numerous different environments, the Georgia Tech team says.
“The shape and features of each tile scale can be singular and can accommodate different frequency bands and power levels,” said Tentzeris. “One could have communications capabilities, another sensing capabilities, and another could be an energy harvester tile for solar, thermal, or ambient RF energy. The application of the tile framework is not limited to communications.”
Internet of Things, virtual reality, as well as smart manufacturing/Industry 4.0 — a technology-driven approach that utilizes internet-connected “intelligent” machinery to monitor and fully automate the production process — are additional areas of application the team is excited to explore.
“The tile-architecture’s mass scalability makes its applications particularly diverse and virtually ubiquitous. From structures the size of dams and buildings, to machinery or cars, down to individual health-monitoring wearables,” said Tentzeris. “We’re moving in a direction where everything will be covered in some type of a wireless conformal smart skin encompassing electronically steerable antenna arrays of widely diverse sizes that will allow for effective monitoring.”
The team now looks forward to testing the approach outside the lab on large, real-world structures. They are currently working on the fabrication of much larger, fully inkjet-printed tile arrays (256+ elements) that will be presented at the upcoming International Microwave Symposium (IEEE IMS 2022) – the flagship IEEE conference in RF and microwave engineering. The IMS presentation will introduce a new tile-based large-area architecture version that will allow assembly of customizable tile arrays in a rapid and low-cost fashion for numerous conformal platforms and 5G+ enabled applications.
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The authors declare no competing interests.
This work was supported in part by the National Science Foundation.
CITATIONS: He, X., Cui, Y. & Tentzeris, M.M. Tile-based massively scalable MIMO and phased arrays for 5G/B5G-enabled smart skins and reconfigurable intelligent surfaces. Sci Rep 12, 2741 (2022). https://doi.org/10.1038/s41598-022-06096-9
K.Hu, G.S.V.Angulo, Y.Cui and M.M.Tentzeris, “Flexible and Scalable Additively Manufactured Tile-Based Phased Arrays for Satellite Communications and 5G mmWave Applications,” accepted for presentation at IEEE International Microwave Symposium (IMS) 2022, Denver, CO, June 2022.
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Dan Watson
dwatson@ece.gatech.edu
Dec. 20, 2021
The world’s dependence on semiconductors came into sharp focus in 2021, when automotive manufacturing ground to a halt because of massive computer chip shortages – as Asian suppliers couldn’t keep up with demand for microelectronics – miniaturized electronic circuits and components that drive everything from smartphones to new vehicle components to hypersonics weapons systems.
The culprit was global supply chain disruptions caused by the Covid-19 pandemic. The crisis has highlighted the pressing need for the U.S. to bolster its domestic semiconductor supply chains and industrial capacity, after three decades of decline as a semiconductor producer. The U.S. share of global semiconductor fabrication has dropped to 12% today, compared to 37% in 1990, according to the Semiconductor Industry Association (SIA). In addition, the semiconductor industry today only accounts for 250,000 direct U.S. jobs.
As the country rebuilds its semiconductor infrastructure at home, Georgia Tech serves as a vital partner – to train the microelectronics workforce, drive future microelectronics advances, and provide unique fabrication and packaging facilities for industry, academic and government partners to develop and test new solutions.
“We’re one of the only universities that can support the whole microelectronics stack – from new materials and devices to packaging and systems,” said Madhavan Swaminathan, the John Pippin Chair in Microsystems Packaging in the School of Electrical and Computer Engineering and director of the 3D Systems Packaging Research Center.
Dec. 16, 2021
The global supply chain has been rocked by disruptions triggered largely by the coronavirus pandemic, resulting in a cascade of shortages on a host of products ranging from computer chips to medications.
But supply chain disruptions also highlight the potential vulnerabilities in the U.S. manufacturing sector’s critical segments like defense.
To help manufacturers across the state, the Georgia Institute of Technology has launched the Georgia Manufacturing 4.0 Consortium to work with those businesses in defense and related industries become more resilient and less susceptible to supply chain disruptions. The Consortium, which will begin accepting members in April 2022, will work with Georgia defense manufacturers to incorporate cybersecurity protocols, smart technologies such as sensor packs, machine learning, artificial intelligence, and other best practices under Industry 4.0 technology standards.
Led by Aaron Stebner, associate professor in the George W. Woodruff School of Mechanical Engineering and the School of Materials Science and Engineering, the Consortium is an 18-month pilot funded by a Department of Defense Office of Local Defense Community Cooperation (OLDCC) grant of nearly $1 million. Georgia Tech is working in partnership with Spelman College, the Technical College System of Georgia, and the Georgia Department of Economic Development, under the grant to develop workforce, training manuals, a curriculum, and to support businesses in adapting to economic and technological changes that emerge at a much more rapid pace today.
“It’s a cooperative effort that’s really focused on helping to get modern technologies to these Georgia manufacturers. This is about establishing a community of manufacturers who all want to move forward but don’t have the bandwidth or capabilities do it individually,” Stebner said.
The Consortium has three goals. The first is to increase the manufacturing defense supply chain’s resilience and diversification. That will allow those companies to pivot quickly in response to demand and let non-defense-related industries enter the supply chain at critical junctures. The second goal is to work with Georgia manufacturers in adopting new technologies and address challenges that put those businesses at risk.
Lastly, the Consortium is to be a conduit that helps small- and medium-sized manufacturers test out innovations using Georgia Tech resources such as the Advanced Manufacturing Pilot Facility, connect manufacturers with each other, and potentially unlock new markets and collaboration opportunities.
While the focus is on defense manufacturing, the Consortium is open to all manufacturers.
“We want to help as many manufacturers as we can, to grow a bigger pie that helps everybody, lowers risk, and allows companies to be part of building innovative solutions” Stebner said.
Manufacturing Supports Georgia Economy
National Association of Manufacturers data show that manufacturing accounts for $61.1 billion in economic activity, roughly 10% of Georgia’s total output. The industry includes more than 6,600 firms that employ nearly 400,000.
At $14 billion a year, Georgia is ranked 13th in federal defense spending. Roughly 1,200 manufacturers in the state are in defense or related industries. Those include information technology companies that support cybersecurity, wireless communications, and other innovations that are critically essential to Industry 4.0 in defense manufacturing.
University partners from the Technical College System of Georgia and Spelman College will look to take the Consortium findings and data from the work they do with member companies to create educational programming and workforce training.
Today, there is a need for more workers in machine learning and other aspects of advanced manufacturing, as well as a need to change perceptions of manufacturing, especially in rural parts of the state, Stebner explained.
To that end, the Technical College System of Georgia could develop programming for students within its two-year education curriculum. It also has a mobile manufacturing unit that could be taken to rural parts of the state and used as a tool to highlight opportunities in manufacturing and dispel misconceptions about the industry.
The all-women’s Spelman College, one of the nation’s premier historically black colleges and universities, launched an extended reality program in the fall of 2020. That program aims to integrate art, technology, and narrative on a gaming platform which is familiar and engaging for students. Those students will develop the technical skills to develop games, create immersive virtual experiences, and develop visual simulations for research, education, and training.
For Consortium members, Spelman’s extended reality program can be used to help turn research data gathered from them into workforce training and development modules.
“Spelman has a long history of graduating women in the natural sciences, and that history has recently led the Department of Defense to distinguish the College as a Center of Excellence for educating women in STEM,” said Jerry Volcy, a Spelman professor and co-director of the Spelman Innovation Lab.
The extended reality program furthers Spelman’s goal to increase the technological readiness of its graduates.
“Spelman has a long record of forging pathways for women of color into new spaces. Today, these spaces include extended reality, defense and, to some extent, manufacturing research,” Volcy said. “From the College’s perspective, participation in the Consortium has the dual potential of creating and discovering new pathways into these industries while immediately providing real-world applications laboratory for the developing extended reality program.”
Fulfilling Georgia Tech’s Mission
Within Georgia Tech, the Georgia Manufacturing Extension Partnership and the Georgia Tech Manufacturing Institute will support Consortium efforts.
The Consortium reflects Georgia Tech’s broader mission to further its Advanced Manufacturing Initiative, said George White, Georgia Tech’s interim vice president of Industry Collaboration.
“The anticipated research impact envisioned through the Defense Manufacturing Consortium will strengthen Georgia Tech’s positioning in enabling major public private collaborations,” White said. “The advent of the Consortium represents the opportunity to convene key stakeholders from government, academics, and industry to innovate and solve the most challenging problems in manufacturing.”
News Contact
Writer and media relations contact:
Péralte C. Paul
peralte.paul@comm.gatech.edu
404.316.1210
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