A5102942154- Thermal Radiation and Cooling Technologies
- Solar-Powered Water Purification Methods
- Heat Transfer and Optimization
- Solar Thermal and Photovoltaic Systems
- Thermal properties of materials
- Nanofluid Flow and Heat Transfer
- Phase Change Materials Research
- Heat Transfer and Boiling Studies
- Fluid Dynamics and Thin Films
- Airway Management and Intubation Techniques
- Child and Adolescent Health
- Photovoltaic System Optimization Techniques
- Urban Heat Island Mitigation
- Electrohydrodynamics and Fluid Dynamics
- Fluid Dynamics and Heat Transfer
- Building Energy and Comfort Optimization
- Colorectal Cancer Screening and Detection
- Advanced Sensor Technologies Research
- Birth, Development, and Health
- Meta-analysis and systematic reviews
- Health Systems, Economic Evaluations, Quality of Life
- Catalytic Processes in Materials Science
- Obesity, Physical Activity, Diet
- Neonatal Respiratory Health Research
- Surface Modification and Superhydrophobicity
City University of Hong Kong
2020-2025
Hong Kong University of Science and Technology
1995-2022
University of Hong Kong
1995-2022
Radiative cooling textiles designed to reflect incoming sunlight and enhance mid-infrared (MIR) emissivity show great potential for ensuring personal thermal comfort. Thus, these are gaining prominence as a means of combating the heat stress induced by global warming. Nonetheless, integrating radiative effects into scalable textile materials thermoregulation remains formidable challenge. To achieve optimal performance, must exhibit finely tuned optical properties spectral selectivity. In...
Water evaporation-induced electricity generation, an emerging renewable energy-harvesting technology, directly captures from water evaporation by utilizing the interaction between material surfaces and molecules. generator (WEIG) offers a distinct advantage in mitigating limitations of conventional power sources, such as intermittency, geographical constraints, climate dependence. Yet, its potential is limited low output stemming insufficient charge mobility solid-water interfacial...
Metal-Oxide Semiconductors In article number 2203346, Zhihe Xia, Man Wong, and co-workers propose a 3-parameter equation based on kinetic model involving oxidant diffusion an oxidation-reduction reaction of intrinsic donor defects. It is shown to be applicable common metal-oxide semiconductors deployed the characterization
A thermal microsystem, integrated with pressure and temperature microsensors, is fabricated to study convective boiling under uniform heat flux boundary condition. Utilizing a wafer bond etch back technology, the source, sensors are separated from fluid flow by membrane only 1.5/spl mu/m in thickness; thus, allowing experimentally good control of conditions. Temperature distributions for various input power levels have been measured obtain curves. The conditions corresponding onset two phase...
Herein, a novel coalescence–jumping phase transition thermal diode using hybrid nanofluids, an emerging fluid with proven supreme properties, is first proposed and investigated. The rectification enhancement mechanism investigated by the evaporation performances of working fluid‐filled superhydrophilic porous tank. Furthermore, developed mathematical model well‐matched experimental results in terms heat transfer performance diodes nanofluids. It worth noting that increasing volume fraction...
The height effect on bubble dynamics in a microchannel is experimentally studied. We reported that the critical size for nucleation site to be active increases linearly with channel height. However, once formed, its evolution from incipience departure can also channel-size dependent. Thus, various heat sinks have been fabricated, about 5-10 /spl mu/m height, integrated temperature sensors utilizing Si-to-glass anodic bonding technology. Nucleation sites formed microchannels bottom silicon...
Abstract A thermal diode, a device to manipulate the heat flow in different directions, is useful various systems, such as solar storage systems. It noted that performance of phase change diodes shows highest rectification performances literature. The diode can be further improved by utilizing working fluid with enhanced properties. Since hybrid nanofluids are proven have better properties than base (i.e. water), this study, using Al2O3-Cu/water nanofluid fabricated and tested investigate...
A solar interfacial steam generator is a device that localizes the energy at water-air interface for water evaporation. The can be applied in various evaporation-based thermal systems to enhance system efficiency by reducing heat dissipation. In this study, bio-inspired polypyrrole (PPY)-reduced graphene oxide (RGO) coated wood was fabricated and investigated evaporation solar-to-vapor conversion improvement with different PPY-RGO ratios. Thanks synergistic effect of PPY high broadband...