Draper Scholar to explore 3D-printed lens design

Charles Ferrer — Tue, 01 Jul 2025 19:47:59 +0000

Draper Scholar to explore 3D-printed lens design Charles Ferrer Tue, 07/01/2025 - 13:47

Charles Ferrer

Samuel Silberman, an incoming PhD student in electrical engineering, has been named a 2025 Draper Scholar by Draper. The prestigious graduate fellowship will support his research into radio frequency (RF) lens design using advanced 3D printing and additive manufacturing.

“My Draper fellowship will focus on developing synthesis and optimization methods for the design of RF lenses,” Silberman said. “These lenses will leverage multi-material additive manufacturing and corresponding material parameters achievable through advanced 3D printing techniques.”

RF lenses are critical components in communication and radar systems, often used to create highly directional lens antennas. Through his fellowship, Silberman hopes to take advantage of innovative 3D printing capabilities to improve the performance of these devices.

The Draper Scholar Program provides five years of funding and offers scholars access to scientists and engineers at Draper in Cambridge, Massachusetts. In addition to virtual mentorship, he will travel to Draper annually to present his research and connect with other fellows across the country.

Last summer, Silberman participated in undergraduate research through Canada’s Natural Sciences and Engineering Research Council program. He worked on a resonant capacitive power transfer system for electrified roadways, conducting electromagnetic analysis and designing power electronics for the system. That hands-on experience cemented his interest in RF systems and power transfer and ultimately influenced his decision to pursue his PhD at CU Boulder.

“I was drawn to the work being done in electromagnetic metamaterials by my advisor, Cody Scarborough,” Silberman said, “and Colorado’s great skiing and hiking scene was an added bonus.”

He will be co-advised by Rob MacCurdy, assistant professor of mechanical engineering, on the mechanical aspects of the project.

Silberman earned his bachelor’s degree in electrical and computer engineering from the University of New Brunswick in Fredericton, Canada.

“I’m really excited to contribute to the field and grow as a researcher through this opportunity,” he said.

Samuel Silberman, an incoming PhD student in electrical engineering, has been named a 2025 Draper Scholar by Draper. The prestigious graduate fellowship will support his research into radio frequency lens design using advanced 3D printing and additive manufacturing.

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Popovic elected to National Academy of Engineering

Anonymous — Tue, 01 Mar 2022 16:55:46 +0000

Popovic elected to National Academy of Engineering Anonymous (not verified) Tue, 03/01/2022 - 09:55

Emily Adams

Popovic (bottom left) and several of her graduate students in their lab.

Distinguished Professor Zoya Popovic has been elected to the National Academy of Engineering, one of the highest professional distinctions granted to engineers in academia and industry.

Popovic was honored “for developing high-efficiency microwave transmitters and active antenna arrays for wireless communication systems and for engineering education,” according to a press release from the NAE.

While Popovic said it’s a big honor for her personally and professionally, her thoughts quickly turned to how it will benefit her graduate students, both current and alumni.

“It is good for my students and will help them make more connections,” she said.

Popovic added that she hopes they seat her by fellow 2022 NAE inductee Elon Musk at the award ceremony.

“People like him who are on the industry development side need our students – all of his companies need RF engineers,” she said. “I’m hoping to ask him to endow some student fellowships at CU.”

As an educator, Popovic has graduated more than 65 PhD students, with 16 more working on their graduate degrees in her lab today. She has also developed five undergraduate and graduate electromagnetics and microwave laboratory courses, in addition to co-authoring the textbook Introductory Electromagnetics with her late father.

“Zoya is deeply committed to the educational experiences of both the students in her courses and the substantial number of graduate students that she has supervised in her career,” said Chris Myers, chair of the Department of Electrical, Computer and Energy Engineering. “Her leadership has established an internationally renowned center for RF research and education.”

Popovic’s research interests are in high-efficiency power amplifiers and transmitters, microwave and millimeter-wave high-performance circuits for communications and radar, medical applications of microwaves, quantum sensing and metrology, and wireless powering.

She is a fellow of the IEEE and the recipient of two IEEE MTT Microwave Prizes for best journal papers. She is also a winner of the White House NSF Presidential Faculty Fellow award, the URSI Issac Koga Gold Medal, the ASEE/HP Terman Medal, and the German Alexander von Humboldt Research Award. She was elected as foreign member of the Serbian Academy of Sciences and Arts in 2006 and was a Chair of Excellence at the Carlos III University of Madrid, Spain, in 2019.

Popovic has been a faculty member at CU Boulder since 1990. She was named a distinguished professor – the highest honor the university bestows on faculty members – in 2010. In 2017, she also became the first faculty member to hold the Lockheed Martin Chair in RF Engineering.

Popovic is serving on several working groups for SpectrumX, a $25 million research center to transform the landscape of radio frequency spectrum research, education, collaboration and management. In 2020, she was among the winners of CU Boulder’s Lab Venture Challenge for a novel core body temperature sensor her group developed, now commercialized as LumenAstra with Popovic as chief science officer. She has received significant research funding from the U.S. Navy (ONR, NRL and Crane), the Defense Advanced Research Projects Agency and Lockheed Martin, as well as continuous support from the National Science Foundation.

College of Engineering and Applied Science Acting Dean Keith Molenaar said the NAE election is fitting for such an impactful career, noting the many recognitions Popovic has earned in her career.

“She is undoubtedly one of our most highly recognized professors by our scholarly peers, both nationally and internationally,” Molenaar said. “However, when I describe Professor Popovic to a new student, faculty member or alumni, I always start by talking about her excellence as a teacher and mentor. She is truly invested in both research excellence and the success of each one of her students.”

Popovic and fellow CU Engineering honoree Brian Argrow will be officially inducted into the NAE during the organization’s annual meeting in Washington, D.C., on Oct. 2.

Distinguished professor honored “for developing high-efficiency microwave transmitters and active antenna arrays for wireless communication systems and for engineering education.”

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