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Graduation Day!

May. 8, 2026—Graduates Ryan Kowalsik and Aditha Senerath.      

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Congratulations to Ryan Kowalski on receiving the Founder’s Medal!

May. 7, 2026—Ryan was selected as the 2026 Founder’s Medalist from the Graduate School.The Founder’s Medal is awarded to the most outstanding Ph.D. graduate each year during the May commencement ceremony. This year the medal is being awarded in the subject areas of Engineering, Mathematics, and Physical Science. https://news.vanderbilt.edu/2026/05/07/vanderbilt-university-honors-class-of-2026-founders-medalists/

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Caldwell group members presenting posters at VINSE 25th Annual NanoDay!

Nov. 13, 2025—10 members of the Caldwell lab presented posters at the at 25th Annual VINSE NanoDay!    

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Check out Ryan Kowalski’s publication “Ultraconfined terahertz phonon polaritons in hafnium dichalcogenides”

Sep. 30, 2025—Ryan Kowalski’s recently published paper in Nature Materials “Ultraconfined terahertz phonon polaritons in hafnium dichalcogenides.” https://www.nature.com/articles/s41563-025-02345-0

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2025 Caldwell lab group

Sep. 3, 2025—                  Front Row: Professor Josh Caldwell, Emmanuel Dabuo, Xiaomeng Zhang, Youngji Kim, Maddy Adams Second Row: Thiago Arnaud, Jongha Choi, Emma Bartelsen, Courtney Ragle Third Row: Ke-Sean Peter, Tony Peng, Trey Long, Ryan Kowalski, Richarda Niemann, Jeb Buchner, Maximilian Obst

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Congrats to Adriana! Best Poster Award at VINSE 14th Annual Undergraduate Research Symposium

Aug. 1, 2025—Adriana LaVopa, REU student with Caldwell Lab, won the best poster award at the VINSE 14th Annual Undergraduate Research Symposium. “Local Control of Ferroelectric Switching for Optical Modulation in Al1-xBxN” In the pursuit of space- and energy-efficient devices, nanophotonics offers an avenue towards controlling opto-electronic and optical signals far below the length scales of diffraction-limited...

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VINSE 14th Annual Undergraduate Research Symposium – Madeleine Adams and Adriana LaVopa

Aug. 1, 2025—Madeleine and Adriana presented their posters during the VINSE 14th Annual Undergraduate Research Symposium. Both participants did an amazing job and special thanks to Jeb Buchner and Youngji Kim for working with both. Madeline Adams is an undergraduate mechanical engineering major at Vanderbilt University and is entering her junior year. She has been with the...

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Congrats to Aditha Senarath!

Jul. 11, 2025—Congratulations to Aditha Senarath on his successful dissertation defense. GaN for Space and Power Electronics: Radiation Effects Study and Development of a Nano-Optical Probe for Characterization For decades, the semiconductor industry has followed Moore’s Law, predicting a doubling of chip power every two years by doubling transistor density. However, as traditional silicon-based technologies approach their...

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Caldwell lab group – BNW2025 in Nashville, TN

May. 28, 2025—Members of the Caldwell lab attended the BNW (Boron Nitride Workshop) 2025 in Nashville.  Josh Caldwell is one the organizers for the Boron Nitride Workshop. This series is dedicated entirely to boron nitride. Former group member Katja Diaz-Granados designed the logo for the BNW website and t-shirts. Current members Richarda Nieman and Courtney Ragle won...

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