1 citations · 1 across the 8 of their papers we have counts for
9 papers
Nonreciprocal Thermophotonic Cooling
Daniel Cui, Parthiban Santhanam, Aaswath P. Raman
Solid-state cooling via electroluminescent emission from light-emitting diodes is a promising alternative to thermoelectric and vapor-compression refrigeration, but practical perfo…
Quasi-bandgap behavior in non-Hermitian photonic crystals
Jin Xu, Daniel Cui, Aaswath P. Raman
We investigate non-Hermitian photonic crystals in which the lossy and lossless constituents share the same real permittivity and differ only in their imaginary part. We characteriz…
Magneto-optic perturbation theory for near-complete violation of Kirchhoff's law of thermal emission at low magnetic fields
Daniel Cui, Aaswath P. Raman
Magneto-optic photonic systems can violate Kirchhoff's law of thermal emission by breaking Lorentz reciprocity. We develop a dispersive perturbation theory yielding an analytical e…
Experimental demonstration of corrugated nanolaminate films as reflective light sails
Matthew F. Campbell, Pawan Kumar, Jason Lynch +11
Achieving laser-driven, reflective, relativistic light sails would represent a tremendous breakthrough for humankind, allowing us to advance our understanding of the solar system a…
The Thermal Cost of Harvesting the Solar Infrared Tail in Space-Based Photovoltaics
David E. Abraham, Linus Kim, Aaswath P. Raman
Space applications require the highest performing photovoltaic devices. Typically these are multi-junction devices that are capable of converting a larger bandwidth of the solar sp…
Directional Thermal Emission Across Both Polarizations in Planar Photonic Architectures
David E. Abraham, Daniel Cui, Baolai Liang +5
Directional and spectral control of thermal emission is essential for applications in energy conversion, imaging, and sensing. Existing planar, lithography-free epsilon-near-zero (…
Thermo-optic tuning of directional infrared emissivity
Jae S. Hwang, Jin Xu, Aaswath P. Raman
Tuning the spatial extent of directional thermal emission across an arbitrary, and fixed spectral bandwidth is a fundamentally enabling capability for a range of emerging applicati…
Loss-driven gain enhancements driven by topological singularities in non-Hermitian photonic crystals defects
Daniel Cui, Aaswath P. Raman
We show that purely lossy defects in one- and two-dimensional non-Hermitian photonic crystals can induce transmission matrix singularities not accessible with lossless defects. The…
Chip-scale monolithic optoelectronic voltage boost conversion
Parthiban Santhanam, Daniel Cui, Jae Seung Hwang +4
Voltage conversion is a fundamental electronic process critical to engineered systems across a wide spectrum of applications and spanning many orders of magnitude in scale. Convent…