607 citations · 1.5k across the 12 of their papers we have counts for
13 papers
Meent: Differentiable Electromagnetic Simulator for Machine Learning
Yongha Kim, Anthony W. Jung, Sanmun Kim +12
Electromagnetic (EM) simulation plays a crucial role in analyzing and designing devices with sub-wavelength scale structures such as solar cells, semiconductor devices, image senso…
Electrostatic Steering of Thermal Emission with Active Metasurface Control of Delocalized Modes
Joel Siegel, Shinho Kim, Margaret Fortman +6
We theoretically describe and experimentally demonstrate a graphene-integrated metasurface structure that enables electrically-tunable directional control of thermal emission. This…
Design parameters of free-form color routers for subwavelength pixelated CMOS image sensors
Sanmun Kim, Chanhyung Park, Shinho Kim +2
Metasurface-based color routers are emerging as next-generation optical components for image sensors, replacing classical color filters and microlens arrays. In this work, we repor…
Physics-informed reinforcement learning for sample-efficient optimization of freeform nanophotonic devices
Chaejin Park, Sanmun Kim, Anthony W. Jung +6
In the field of optics, precise control of light with arbitrary spatial resolution has long been a sought-after goal. Freeform nanophotonic devices are critical building blocks for…
The Effect of Dust and Hotspots on the Thermal Stability of Laser Sails
Gabriel R. Jaffe, Gregory R. Holdman, Min Seok Jang +3
Laser sails propelled by gigawatt-scale ground-based laser arrays have the potential to reach relativistic speeds, traversing the solar system in hours and reaching nearby stars in…
Image polaritons in van der Waals crystals
Sergey G. Menabde, Jacob T. Heiden, Joel Cox +2
Polaritonic modes in low-dimensional materials enable strong light-matter interactions and provide a platform for light manipulation at nanoscale. Very recently, a new class of pol…
Thermal runaway of silicon-based laser sails
Gregory R. Holdman, Gabriel R. Jaffe, Min Seok Jang +3
Laser sail-based spacecraft -- where a powerful earth-based laser propels a lightweight outer-space vehicle -- have been recently proposed by the Breakthrough Starshot Initiative a…
Real-space imaging of acoustic plasmons in large-area CVD graphene
Sergey G. Menabde, In-Ho Lee, Sanghyub Lee +8
An acoustic plasmonic mode in a graphene-dielectric-metal heterostructure has recently been spotlighted as a superior platform for strong light-matter interaction. It originates fr…
Self-stabilizing laser sails based on optical metasurfaces
Joel Siegel, Anthony Wang, Sergey G. Menabde +3
This article investigates the stability of 'laser sail'-style spacecraft constructed from dielectric metasurfaces with areal densities 1g/m. We show that the microscopic opt…
Electronically Tunable Perfect Absorption in Graphene
Seyoon Kim, Min Seok Jang, Victor W. Brar +2
Graphene nanostructures that support surface plasmons have been utilized to create a variety of dynamically tunable light modulators, motivated by theoretical predictions of the po…
Trapped charge driven degradation of perovskite solar cells
Namyoung Ahn, Kwisung Kwak, Min Seok Jang +6
Perovskite solar cells have shown fast deterioration during actual operation even with encapsulation, but its mechanism has been elusive. We found the fundamental mechanism for irr…
Electronic modulation of infrared emissivity in graphene plasmonic resonators
Victor W. Brar, Michelle C. Sherrott, Luke A. Sweatlock +4
Electronic control of blackbody emission from graphene plasmonic resonators on a silicon nitride substrate is demonstrated at temperatures up to 250 C. It is shown that the graphen…
Tunable Large Resonant Absorption in a Mid-IR Graphene Salisbury Screen
Min Seok Jang, Victor W. Brar, Michelle C. Sherrott +5
Enhancing the interaction strength between graphene and light is an important objective for those seeking to make graphene a relevant material for future optoelectronic application…