92 citations · 494 across the 21 of their papers we have counts for
21 papers
Fundamental limit to the rectification of near-field heat flow: The potential of intrinsic semiconductor films
Qizhang Li, Qun Chen, Bai Song
We derive the fundamental limit to near-field radiative thermal rectification mediated by an intrinsic semiconductor film within the framework of fluctuational electrodynamics. By…
Giant radiative thermal rectification using an intrinsic semiconductor film
Qizhang Li, Qun Chen, Bai Song
Rectification of heat flow via a thermal diode is not only of fundamental interest, but can also enable a range of novel applications in thermal management and energy conversion. H…
Radiative thermal diode via hyperbolic metamaterials
Qizhang Li, Haiyu He, Qun Chen +1
Hyperbolic metamaterials (HMMs) support propagating waves with arbitrarily large wavevectors over broad spectral ranges, and are uniquely valuable for engineering radiative thermal…
Thin-film radiative thermal diode with large rectification
Qizhang Li, Haiyu He, Qun Chen +1
We propose a mechanism to substantially rectify radiative heat flow by matching thin films of metal-to-insulator transition materials and polar dielectrics in the electromagnetic n…
A quantum cascade laser-based mid-IR frequency metrology system with ultra-narrow linewidth and -level frequency instability
Michael G. Hansen, Evangelos Magoulakis, Qun-Feng Chen +2
We demonstrate a powerful tool for high-resolution mid-IR spectroscopy and frequency metrology with quantum cascade lasers (QCLs). We have implemented frequency stabilization of a…
A compact, robust, and transportable ultra-stable laser with a fractional frequency instability of
Qun-Feng Chen, Alexander Nevsky, Marco Cardace +5
We present a compact and robust transportable ultra-stable laser system with minimum fractional frequency instability of at integration times between 1 to 10 s. T…