A5062300993- Thermal Radiation and Cooling Technologies
- Urban Heat Island Mitigation
- Building Energy and Comfort Optimization
- Wind and Air Flow Studies
- Aerogels and thermal insulation
- Transition Metal Oxide Nanomaterials
- Optical properties and cooling technologies in crystalline materials
- Solar Thermal and Photovoltaic Systems
- Adsorption and Cooling Systems
- Advanced Thermoelectric Materials and Devices
- Phase Change Materials Research
- Concrete and Cement Materials Research
- Infection Control and Ventilation
- Supercapacitor Materials and Fabrication
- Thermochemical Biomass Conversion Processes
- Magnesium Oxide Properties and Applications
- Perovskite Materials and Applications
- Quantum Electrodynamics and Casimir Effect
- Recycling and utilization of industrial and municipal waste in materials production
- Innovative concrete reinforcement materials
- Aerodynamics and Acoustics in Jet Flows
- Greenhouse Technology and Climate Control
- Mesoporous Materials and Catalysis
- Silicone and Siloxane Chemistry
- Advanced Surface Polishing Techniques
Zhejiang University
2022-2024
University of Wyoming
2010-2022
Wyoming Department of Education
2012-2019
China Academy of Engineering Physics
2014-2015
Massachusetts Institute of Technology
2005-2011
Monash University
2009
National University of Singapore
2003
The Ohio State University
2002
National Cheng Kung University
2002
Passive radiative cooling draws heat from surfaces and radiates it into space as infrared radiation to which the atmosphere is transparent. However, energy density mismatch between solar irradiance low flux a near-ambient-temperature surface requires materials that strongly emit thermal barely absorb sunlight. We embedded resonant polar dielectric microspheres randomly in polymeric matrix, resulting metamaterial fully transparent spectrum while having an emissivity greater than 0.93 across...
Radiative sky cooling cools an object on the earth by emitting thermal infrared radiation to cold universe through atmospheric window (8–13 μm). It consumes no electricity and has great potential be explored for of buildings, vehicles, solar cells, even power plants. been in past few decades but limited nighttime use only. Very recently, owing progress nanophotonics metamaterials, daytime radiative achieve subambient temperatures under direct sunlight experimentally demonstrated. More...
Radiative cooling materials spontaneously radiate long-wave infrared (LWIR) to the cold outer space, providing power that is preferred in hot seasons. has been widely explored for walls and roofs but rarely windows, which are one of least energy-efficient parts buildings. We fabricated scalable smart windows using a solution process giving different emissivity (ε) at high (εLWIR-H 0.61) low (εLWIR-L 0.21) temperatures regulate radiative automatically while maintaining luminous transparency...
Abstract The heating and cooling energy consumption of buildings accounts for about 15% national total in the United States. In response to this challenge, many promising technologies with minimum carbon footprint have been proposed. However, most approaches are static monofunctional, which can only reduce building certain conditions climate zones. Here, we demonstrate a dual-mode device electrostatically-controlled thermal contact conductance, achieve up 71.6 W/m 2 power density 643.4 (over...
On-demand and selective regulation of the radiative cooling (long-wave infrared, LWIR) solar heat gain (ultraviolet-, visible- near-IR, UV–vis–NIR) building facades is a grand challenge but essential to decrease energy usage in buildings. Here, we report reconfigurable interwoven surface that can dynamically switch overlapping sequence achieve spectral selectivity ultrabroadband modulations for windows, walls/roofs with decent modulations, energy-saving performance. The result surpasses best...
Abstract Plasma technology is an eco‐friendly way to modify or fabricate carbon‐based materials (CBMs) due plasmas’ distinctive abilities in tuning the surface physicochemical properties by implanting functional groups incorporating heteroatoms into without changing bulk structure. However, mechanisms of formation on carbon are still not clearly explained because variety different discharge conditions and complexity plasma chemistry. Consequently, this paper contains a comprehensive review...
This paper presents a comprehensive study of the impacts three governing factors: Alkaline concentration, curing temperature and period on mechanical properties geopolymer that include uniaxial compressive strength, Poisson’s ratio, Young’s modulus elasticity. As literature review indicates, most previous research studies were focused effect single factor, while there is lack to simultaneously investigate combined effects all these factors, especially in systematic experimental setup....
Radiative cooling is the process by which an object on Earth's surface loses heat emitting thermal radiation into space through atmospheric window. Because continuous in time, radiative may cause overcooling winter or at night. Therefore, it essential to develop dynamic (DRC) approaches as opposed "static" cooling. In this work, we classify DRC passive and active according different sources of external response. By reviewing dual-band co-modulation mechanisms application fields with...