A5029030320- Thermal Radiation and Cooling Technologies
- Urban Heat Island Mitigation
- Optical properties and cooling technologies in crystalline materials
- Thermal properties of materials
- Metamaterials and Metasurfaces Applications
- Phase Change Materials Research
- Solar Thermal and Photovoltaic Systems
- Radiative Heat Transfer Studies
- Building Energy and Comfort Optimization
- Photonic Crystals and Applications
- Heat Transfer and Optimization
- Adsorption and Cooling Systems
- Advanced Antenna and Metasurface Technologies
- Advanced Thermodynamics and Statistical Mechanics
- solar cell performance optimization
- Synthesis and properties of polymers
- Graphene research and applications
- Plasmonic and Surface Plasmon Research
- Quantum Electrodynamics and Casimir Effect
- Transition Metal Oxide Nanomaterials
- Silicon Carbide Semiconductor Technologies
- Tribology and Wear Analysis
- Photonic and Optical Devices
- Semiconductor materials and interfaces
Huazhong University of Science and Technology
2023-2025
China University of Mining and Technology
2021
Abstract Multispectral camouflage technologies, especially in the most frequently-used visible and infrared (VIS-IR) bands, are increasing demand for ever-growing multispectral detection technologies. Nevertheless, efficient design of proper materials structures VIS-IR is still challenging because stringent requirement selective spectra a large wavelength range flexible color signal adaptivity. Here, material-informatics-based inverse framework proposed to efficiently multilayer germanium...
Wavelength-selective thermal emitters (WS-TEs) have been frequently designed to achieve desired target emissivity spectra, as a typical engineering, for broad applications such camouflage, radiative cooling, and gas sensing, etc. However, previous designs require prior knowledge of materials or structures different the WS-TEs usually vary from in terms structures, thus lacking general design framework engineering across applications. Moreover, fail tackle simultaneous both they either fix...
Development of nanophotonics has made it possible to control the wavelength and direction thermal radiation emission, but is still limited by Kirchhoff's law. Magneto-optical materials or Weyl semimetals have been used in recent studies break time-reversal symmetry, resulting a violation Currently, most work relies on traditional optical design basis can only realize nonreciprocal at specific angle wavelength. In this work, material informatics, framework multilayer absorber with high...
The broad-band, non-directional, and reciprocal properties of traditional thermal radiation significantly limit the precise control efficient utilization energy. In recent years, nonreciprocal (NTR) has been proposed with a magneto-optical effect or spatiotemporal modulation; however, most existing NTRs are only achieved specific zenith angle (θ) without considering azimuthal angles (φ), which actually is nominal NTR not enough for practical angularly asymmetric (ATR) control. Therefore, we...
With the development of modern electronic devices, efficient heat removal via thermal management materials in a low filling load has become one most critical challenges. Herein, biomass template method is used to produce 3D alumina skeleton with one‐directionally arranged fibers as conductive filler epoxy composites. Thermal composites anisotropically enhanced conductivity are prepared by impregnating resin into skeleton. At an 17.7 wt%, composite exhibits high out‐of‐plane 0.72 W m −1 K...
Thermophotovoltaic (TPV) systems can be used to harvest thermal energy for thermoelectric conversion with much improved efficiency and power density compared traditional photovoltaic systems. As the key component, selective emitters (SEs) re-emit tailored radiation better matching absorption band of TPV cells. However, current designs SEs heavily rely on empirical design templates, particularly metal-insulator-metal (MIM) structure, lack considering overall performance optimization...
Abstract In this letter, 4H-SiC Schottky barrier diodes (SBDs) with Ti metal have been subjected to hydrogen treatment in a confined environment of 4% H 2 and 96% N at 150 °C. The effect on the SBDs electrical characteristics has investigated by technical computer-aided design simulation (TCAD) power device analyzer curve tracer. change parameters measured after is studied detail, related degradation mechanism discussed. It was found that affected both interface region bulk SiC SBDs. After...
Radiative cooling has showcased great potential for passive refrigeration without extra energy consumption, while its power and efficiency is confined by Kirchhoff's law, that is, the emissivity equal to absorptivity. The recent development of thermal nonreciprocity breaks limitations especially in broadband manner, makes nonreciprocal radiative (NRC) possible. Since there lacks reports NRC theoretically or experimentally, it time evaluate feasibility worthiness develop NRC. Here, we...
Radiative cooling has witnessed substantial progress while its performance is constrained by the thermal reciprocal Kirchhoff’s law. Violating law to pursue nonreciprocal radiative seems promising; however, energy conservation requirement and radiant flux integrated over entire hemisphere make benefit insignificant. This commentary discusses practical limits of points toward future direction directional cooling.
According to Kirchhoff's radiation law, the absorptivity (a) and emissivity (e) of an object are widely believed be identical, which places a fundamental constraint on photonic energy conversion management. The introduction magneto-optical materials Weyl semimetals into crystals makes it possible violate but most existing work only report unequal spectra in single band, thus significantly limiting practical applications like nonreciprocal thermophotovoltaics. In this work, we introduce...
Radiative cooling (RC) has been extensively investigated to realize passive refrigeration without extra energy consumption, while its power and efficiency is confined by Kirchhoff's law, that is, the emissivity equal absorptivity. The recent development of narrow-band nonreciprocal thermal radiation breaks limitations inspire an open question can we explore broad-band at atmosphere window achieve radiative (NRC)? Here, we, as first, discussed effects NRC from three perspectives; ideal NRC,...
Abstract Wavelength-selective thermal emitters have been frequently adopted as a typical platform for emissivity engineering to achieve desired target spectra broad applications such camouflage, radiative cooling, and gas sensing, etc. However, previous design methods fail tackle the simultaneous of both materials structures, either fixing structures or select proper materials, hindering establishment general framework applicable across different applications. Herein, we employ deep...