A5042675595- Thermal Radiation and Cooling Technologies
- Metamaterials and Metasurfaces Applications
- Lubricants and Their Additives
- Plasmonic and Surface Plasmon Research
- Tribology and Lubrication Engineering
- Tribology and Wear Analysis
- Optical properties and cooling technologies in crystalline materials
- Advanced Thermodynamics and Statistical Mechanics
- Adhesion, Friction, and Surface Interactions
- Microfluidic and Bio-sensing Technologies
- Thermal properties of materials
- Heat Transfer and Optimization
- Lattice Boltzmann Simulation Studies
- Quantum Electrodynamics and Casimir Effect
- Urban Heat Island Mitigation
- 2D Materials and Applications
- Solar Thermal and Photovoltaic Systems
- Nanowire Synthesis and Applications
- Metal and Thin Film Mechanics
- Additive Manufacturing Materials and Processes
- Advanced Thermoelectric Materials and Devices
- Microfluidic and Capillary Electrophoresis Applications
- High Entropy Alloys Studies
- Phase Change Materials Research
- Occupational Health and Safety Research
Carnegie Mellon University
2022-2025
Shanghai Jiao Tong University
2022-2024
Southwest Forestry University
2021-2024
Xi'an Technological University
2023
Xi'an Jiaotong University
2019-2021
Beijing University of Chemical Technology
2021
Thermal interfaces are vital for effective thermal management in modern electronics, especially the emerging fields of flexible electronics and soft robotics that impose requirements interface materials to be addition having high performance. Here, a novel sandwich-structured material (TIM) is developed simultaneously possesses record-low resistance flexibility. Frequency-domain thermoreflectance (FDTR) employed investigate overall performance sandwich structure. As core this sandwich,...
The joining of Inconel 625 and GRCop42 using additive manufacturing is required for thermal management high operating temperature components such as rocket combustion chambers. Though prior efforts have been made to use laser directed energy deposition join these materials, the impact power sequence on microstructure joints not well understood. In this study, onto are fabricated by powder directed-energy-deposition at various powers subsequently subjected characterization in terms present...
Plasmonic metasurfaces with adjustable optical responses can be achieved through phase change materials (PCMs) high contrast. However, the on–off behavior of process results in binary response photonic devices, limiting applications to two-stage modulation. In this work, we propose a reconfigurable metasurface emitter based on gold nanorod array VO2 thin film for achieving continuously tunable narrowband thermal emission. The electrode line connecting center each not only enables emission...
Effective heat dissipation remains a grand challenge for energy-dense devices and systems. As heterogeneous integration becomes increasingly inevitable in electronics, thermal resistance at interfaces has emerged as critical bottleneck management. However, existing interface solutions are constrained by either high or poor reliability. We report strategy to create printable, high-performance liquid-infused nanostructured composites, comprising mechanically soft thermally conductive...
Active metasurfaces have recently emerged as compact, lightweight, and efficient platforms for dynamic control of electromagnetic fields optical responses. However, the complexities associated with their post-fabrication tunability significantly hinder widespread applications, especially mid-infrared range due to material scarcity design intricacy. Here, we experimentally demonstrate highly dynamic, pixelated modulations coherent emission based on an electrically programmable plasmonic...
With the continuous advancement of nanotechnology, nanodevices have become crucial components in computing, sensing, and energy conversion applications. The structures typically possess subwavelength dimensions separations, which pose significant challenges for understanding transport phenomena nanodevices. Here, on basis a judiciously designed thermal photonic nanodevice, we report first measurement near-field between two coplanar over temperature bias up to ∼190 K. Our experimental results...
The underlying mechanism and influences of asymmetric surface texture on anti-friction & wear a modified Al alloy under sliding friction were studied. Microstructure, hardness, resistance, the composite modification analyzed evaluated. A flow field simulation model for wedge triangle was established with Fluent finite element software. results show that counterclockwise wedge-shaped triangular has better properties than clockwise. is beneficial to storage lubricating oil abrasive particles,...
Microscale thermal signature control using incoherent heat sources remains challenging, despite recent advancements in plasmonic materials and phase-change materials. Inspired by leafhopper-generated brochosomes, we design binary metastructures functioning as pixel twins to achieve pixelated at the microscale. In infrared range, exhibit distinct emissivities, creating counterparts of “0-1” states for storing displaying information. visible engineered surface morphology ensures similar...
Al coatings and Al–Zn were prepared on the surface of Q345B steel after shot peening using supersonic arc spraying technology to improve anti-slip anti-corrosion properties. The SEM, XRD EDAX used detect morphology, coating structure phase composition two coatings. coefficient anti-wear performance detected by detector MRTR friction wear tester, respectively. characteristics obtained electrochemical corrosion workstation. experimental results showed that thickness both is 100 μm. substrate...
Metasurfaces consisting of an array planar sub-wavelength structures have shown great potentials in controlling thermal infrared radiation, including intensity, coherence, and polarization. These capabilities together with the two-dimensional nature make metasurfaces ultracompact multifunctional platform for light manipulation. Integrating functionalities, such as amplitude, phase (spectrum directionality), polarization, on a single metasurface offers fascinating device responses. However,...
A composite solar receiver tube containing thermally conductive and high-temperature protective layers is proposed to improve its thermal structural performances. Two combinations of materials, which are Inconel 718/nickel 316 stainless steel/GRCop-84, selected based on the similarity in their coefficients expansion. The solar-to-thermal energy conversion conjunction with fluid flow heat transfer supercritical carbon dioxide inside tubes analyzed by computational dynamics. stress due...
Direct measurements of far-field thermal infrared emission become increasingly useful because conventional indirect methods are limited or even unfeasible to characterize state-of-the-art devices with engineered spectra, directionalities, and polarizations. The direct collection the weak from nanoscale is also challenging their tiny footprints relatively large background radiation noises surroundings. Here, we demonstrate a microscopic lock-in Fourier transform spectrometer (FTIR) system...
Efficient separation of oil droplets from oily wastewater is an essential task for handling the world water crisis and environmental pollution. However, existing passive oil/water technologies suffer drawbacks relatively low efficiency strict material requirements. We present active dielectrophoretic technique without inducing further contamination. Based on non-uniform electric field generated through insulated nanopores under direct current (DC) voltage, droplet experiences a negative...
In order to improve the service life of 4Cr10Si2Mo valve steel, laser processing technology was used prepare triangular textures with different area occupancies on surface 4Cr10Si2Mo, and then subjected salt bath nitridation (salt temperature 580 °C) oxidation (oxidation 400 °C). The mechanism composite treatment friction wear performance steel explored. effect texture working stress hydrodynamic pressure explored using simulation technology, in further studied. XRD test results showed that...
Micro-sized Al2O3-modified carbon fiber hybrid reinforced polymer composites (CFHRP) were prepared using the vacuum-assisted resin transfer molding (VARTM) process, and friction wear tests performed on an MRTR-1 multifunctional tester to study effect of surface doping with trace amounts Al2O3 its content tribological properties composites. The morphology composite material was characterized a three-dimensional confocal laser scanning microscope (LSM). results showed that under dry...
Nanoantennas and their arrays (metasurfaces) provide a versatile platform for controlling the coherence of thermal emission. Conventional designs rely on global heating, which impedes emission efficiency on-chip integration. In this work, we propose an electrically driven metasurface composed Yagi-Uda nanoantenna array interconnected by S-shaped electrode wires, enables concurrent manipulation spectrally directionally. A direct simulation approach based Wiener-chaos expansion method is...
Abstract As a nickel-based super alloy, Inconel 718 (In718) has gained attention in different industries due to its excellent mechanical behavior under elevated temperatures. Nevertheless, low thermal conductivity limits application many fields, such as energy conversion and heat dissipation. GRCop-84, contrast, is copper-based alloy with extremely high conductivity. Making bi-metallic structures GRCop-84 may expand the thermal-related applications of 718. In this study, we investigate...
Abstract Efficient trapping of bacteria from whole blood is essential for point-of-care diagnostics sepsis at an early stage in order to reduce morbidity and mortality. However, low concentration the presence cells hinder efficiency blood. As red comprise 94.9% total cells, lysing using saponin could effectively attenuate influence component on bacteria-trapping process. In this situation, long-range a hybrid electrokinetic based lab-on-a-chip device becomes promising. paper, through...
Active metasurfaces have recently emerged as compact, lightweight, and efficient platforms for dynamic control of electromagnetic fields optical responses. However, the complexities associated with their post-fabrication tunability significantly hinder widespread applications, especially mid-infrared range due to material scarcity design intricacy. Here, we experimentally demonstrate highly dynamic, pixelated modulations coherent emission based on an electrically programmable plasmonic...