303 citations · 1.2k across the 21 of their papers we have counts for
21 papers
Semiconductor-based selective emitter with sharp cutoff for thermophotovoltaic energy conversion
Qing Ni, Rajagopalan Ramesh, Cheng-An Chen +1
Semiconductor emitter can possibly achieve sharp cutoff wavelength due to its intrinsic bandgap absorption and almost zero sub-bandgap emission without doping. A germanium wafer ba…
Optoelectronic Analysis of Spectrally Selective Nanophotonic Metafilm Cell for Thermophotovoltaic Energy Conversion
Qing Ni, Payam Sabbaghi, Liping Wang
This work theoretically explores a spectrally selective TPV cell based on an asymmetric Fabry-Perot resonance cavity structure with sub-100-nm GaSb layer. The simulated spectral pr…
Enhancing Solar Thermal Energy Conversion with Silicon-cored Tungsten Nanowire Selective Metamaterial Absorbers
Jui-Yung Chang, Sydney Taylor, Ryan McBurney +4
This work experimentally studies silicon-cored tungsten nanowire selective metamaterial absorber to enhance solar-thermal energy harvesting, simply fabricated by conformally coatin…
Near-Field Thermophotovoltaic Energy Conversion with Thin-film Tandem Cells
Payam Sabbaghi, Qing Ni, Liping Wang
The performance of a near-field thermophotovoltaic system with a tandem-cell structure composed of thin-film p-doped GaSb and n-doped InAs sub-cells on a gold backside reflector is…
Enhanced Infrared Emission by Thermally Switching the Excitation of Magnetic Polariton with Scalable Microstructured VO2 Metasurfaces
Linshuang Long, Sydney Taylor, Liping Wang
Dynamic radiative cooling attracts fast-increasing interest due to its adaptability to changing environment and promises for more energy-savings than the static counterpart. Here w…
Spectrally-Selective Vanadium Dioxide Based Tunable Metafilm Emitter for Dynamic Radiative Cooling
Sydney Taylor, Ryan McBurney, Linshuang Long +3
Dynamic radiative cooling with variable emissive power is experimentally demonstrated in this study by a wavelength-selective tunable metafilm emitter, which consists of an opaque…
Solar Thermal Energy Conversion Enhanced by Selective Metafilm Absorber under Multiple Solar Concentrations at High Temperatures
Hassan Alshehri, Qing Ni, Sydney Taylor +3
Concentrating solar power, particularly parabolic trough system with solar concentrations less than 50, requires spectrally selective solar absorbers that are thermally stable at h…
Super-Planckian Radiative Heat Transfer between Macroscale Plates with Vacuum Gaps Down to 190 nm Directly Created by SU-8 Posts and Characterized by Capacitance Method
Xiaoyan Ying, Payam Sabbaghi, Nicole Sluder +1
In this work we experimentally demonstrated the near-field thermal radiation enhancement over the blackbody limit by 11 times between highly doped silicon chips with 1x1 cm2 size a…
Bulk Material Based Selective Infrared Emitter for Sub-Ambient Daytime Radiative Cooling
Yue Yang, Linshuang Long, Sheng Meng +3
Through passively emitting excess heat to the outer space, radiative cooling has been demonstrated as an efficient way for energy saving applications. Selective surface with unity…
Spectrally enhancing near-field radiative transfer between gold gratings by exciting magnetic polariton in nanometric vacuum gaps
Yue Yang, Liping Wang
In the present work, we theoretically demonstrate that near field radiative transport between one dimensional periodic grating microstructures separated by nanometer vacuum gaps ca…
Performance Analysis of a Near-Field Thermophotovoltaic Device with a Metallodielectric Selective Emitter and Electrical Contacts for the Photovoltaic Cell
Yue Yang, Jui-Yung Chang, Liping Wang
A near-field thermophotovoltaic (TPV) system with a multilayer emitter of alternate tungsten and alumina layer is proposed in this paper. The fluctuational electrodynamics along wi…
Extraordinary Photon Transport by Near-Field Coupling of a Nanostructured Metamaterial with a Graphene-Covered Plate
Jui-Yung Chang, Yue Yang, Liping Wang
Coupled surface plasmon/phonon polaritons and hyperbolic modes are known to enhance radiative transport across nanometer vacuum gaps but usually require identical materials. It bec…
Spectrally enhancing near-field radiative heat transfer by exciting magnetic polariton in SiC gratings
Yue Yang, Liping Wang
In the present work, we theoretically demonstrate, for the first time, that near field radiative transport between 1D periodic grating microstructures separated by subwavelength va…
Electrically-gated near-field radiative thermal transistor
Yue Yang, Liping Wang
In this work, we propose a near-field radiative thermal transistor made of two graphene-covered silicon carbide (SiC) plates separated by a nanometer vacuum gap. Thick SiC plates s…
Near-Field Radiative Heat Transfer between Metamaterials coated with Silicon Carbide Film
Soumyadipta Basu, Yue Yang, Liping Wang
In this letter, we study the near-field radiative heat transfer between two metamaterial substrates coated with silicon carbide (SiC) thin films. It is known that metamaterials can…
Highly-Efficient Selective Metamaterial Absorber for High-Temperature Solar Thermal Energy Harvesting
Hao Wang, Vijay Prasad Sivan, Arnan Mitchell +3
In this work, a metamaterial selective solar absorber made of nanostructured titanium gratings deposited on an ultrathin MgF2 spacer and a tungsten ground film is proposed and expe…
Vacuum Thermal Switch Made of Phase Transition Materials Considering Thin Film and Substrate Effects
Yue Yang, Soumyadipta Basu, Liping Wang
In the present study, we demonstrate a vacuum thermal switch based on near-field thermal radiation between phase transition materials, i.e., vanadium dioxide (VO2), whose phase cha…
Infrared Frequency-Tunable Coherent Thermal Sources
Hao Wang, Yue Yang, Liping Wang
In this work, we numerically demonstrate an infrared frequency-tunable selective thermal emitter made of graphene covered SiC deep gratings. Full-wave simulation shows temporally-c…
Tailoring Thermal Radiative Properties with Film-Coupled Concave Grating Metamaterials
Hao Wang, Liping Wang
This work numerically investigates the radiative properties of film-coupled metamaterials made of a two-dimensional metallic concave grating on a continuous metal film separated by…
Plasmonic Light Trapping in an Ultrathin Photovoltaic Layer with Film-Coupled Metamaterial Structures
Hao Wang, Liping Wang
A film-coupled metamaterial structure is numerically investigated for enhancing the light absorption in an ultrathin photovoltaic layer of crystalline gallium arsenide (GaAs). The…
Wavelength-Tunable Infrared Metamaterial by Tailoring Magnetic Resonance Condition with VO2 Phase Transition
Hao Wang, Yue Yang, Liping Wang
In this work, we report the design of a wavelength-tunable infrared metamaterial by exciting magnetic resonance with phase transition of vanadium dioxide (VO2). Numerical simulatio…