A5100448047- Thermal Radiation and Cooling Technologies
- Metamaterials and Metasurfaces Applications
- Optical properties and cooling technologies in crystalline materials
- Plasmonic and Surface Plasmon Research
- Transition Metal Oxide Nanomaterials
- Quantum Electrodynamics and Casimir Effect
- Photonic Crystals and Applications
- Near-Field Optical Microscopy
- Advanced Thermodynamics and Statistical Mechanics
- Geotechnical Engineering and Analysis
- Urban Heat Island Mitigation
- Photonic and Optical Devices
- Gold and Silver Nanoparticles Synthesis and Applications
- Thermal properties of materials
- Rock Mechanics and Modeling
- Grouting, Rheology, and Soil Mechanics
- Carbon Nanotubes in Composites
- Electromagnetic Launch and Propulsion Technology
- Silk-based biomaterials and applications
- Integrated Circuits and Semiconductor Failure Analysis
- Solar Thermal and Photovoltaic Systems
- Advanced optical system design
- Civil and Structural Engineering Research
- Bladed Disk Vibration Dynamics
- Optical Coatings and Gratings
Huawei Technologies (United States)
2025
Carnegie Mellon University
2021-2025
Xiangtan University
2024
Sichuan University
2022
State Key Laboratory of Hydraulics and Mountain River Engineering
2022
Beijing Institute of Technology
2019-2022
Beijing Institute of Optoelectronic Technology
2022
Guizhou Education University
2022
Henan University of Science and Technology
2012
Heilongjiang University of Technology
2003
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...
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...
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...
In nature, leafhoppers cover their body surfaces with brochosomes as a protective coating. These leafhopper-produced are hollow, buckyball-shaped, nanoscopic spheroids through-holes distributed across surfaces, representing class of deployable optical materials that rare in nature. Despite discovery the 1950s, it remains unknown why sizes and consistently fall within range hundreds nanometers different leafhopper species. Here, we demonstrate hierarchical geometries engineered narrow size...
Abstract: Miniaturized pixel sizes in near-eye digital displays lead to emission patterns with large divergence angles, necessitating efficient beam collimation solutions improve the light coupling efficiency. Traditional optics, such as lenses and cavities, are wavelength-sensitive cannot simultaneously collimate red (R), green (G), blue (B) light. In this work, we employed inverse design optimization finite-difference time-domain (FDTD) simulation techniques a collimator comprised of...
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...
Using transdimensional plasmonic materials (TDPM) within the framework of fluctuational electrodynamics, we demonstrate nonlocality in dielectric response alters near-field heat transfer at gap sizes on order hundreds nanometers. Our theoretical study reveals that, opposite to local model prediction, propagating waves can transport energy through TDPM. However, by polaritons shorter separations is reduced due metallic TDPM stronger than that predicted model. experiments conducted for a...
Metasurfaces, together with graphene plasmonics, have become prominent for the emissivity control in thermal engineering, both passively through changing geometric parameters and packing density of metasurfaces, actively gating or doping. We demonstrate a graphene-nanowire coupled plasmonic metasurface utilizing hybrid localized surface plasmon modes nanowire array graphene. The makes mode localized, allowing free-space excitation. single layer graphene, via between underneath mirror top...
This work demonstrates a micro electro mechanical system (MEMS) technology based infrared thin film, which converts absorbed visible light energy into radiation. The principle of the film and experiment for studying its thermodynamic characteristics are presented. radiation spectrum conforms to blackbody spectrum, average emissivity in band is 0.638. thermal diffusion distance decreases with decrease substrate thickness. Moreover, fabrication periodic pixel arrays on substrates can...
Thermal radiation has diffusive and broad emission characteristics. Controlling spectrum direction is essential for various applications. Nanoparticle arrays, supporting collective lattice resonances, can be employed controlling optical properties. However, thermal characteristics remain unexplored due to the lack of a theoretical model. Here, we develop an analytical model predict from nanoparticle array using fluctuation–dissipation theorem Green's functions. Our findings reveal that...
Electrochemiluminescence (ECL) biosensors have been widely used in bioassays due to their high sensitivity, fast response, simple equipment and low cost. Signal amplification is an important means improve the sensitivity of ECL biosensors. The common enhancement strategies include DNA amplification, enzyme-assisted signal enhancement, nanomaterials-based application redox-active probes luminophores. Among them, hybridization chain reaction (HCR) shows experiment operation efficiency, which...
The capability of manipulating heat flux at the nanoscale has important implications in thermal circuits and management electronics. In this work, by employing both fluctuating surface current method Wiener-chaos expansion method, we demonstrate a tunable rectification effect based on near-field radiation for nanowire nanocross structures. Due to different decay behaviors phonon polaritons plasmon polaritons, can be bidirectionally controlled various rates tuning separation between...
The capability of manipulating heat flux at the nanoscale has important implications in thermal circuits and management electronics. In this work, by employing both fluctuating surface current method Wiener-chaos expansion method, we demonstrate a tunable rectification effect based on near-field radiation for nanowire nanocross structures. Due to different decay behaviors phonon polaritons plasmon polaritons, can be bidirectionally controlled various rates tuning separation between...
The Wiener chaos expansion method provides a direct approach to accurately compute the thermal radiation from arbitrary structures. Here, we further extend this structures with permittivity or temperature inhomogeneity. inhomogeneous treats two kinds of inhomogeneities same governing equation and thus systematic solution radiative spectra. Compared traditional that approximates an structure by superposition contributions its quasihomogeneous subparts, our calculates entire simultaneously...
Abstract Nanostructured gold has attracted significant interest from materials science, chemistry, optics and photonics, biology due to their extraordinary potential for manipulating visible near‐infrared light through the excitation of plasmon resonances. However, nanostructures are rarely measured experimentally in plasmonic properties hardly used high‐temperature applications because inherent instability mass shape high surface energy at elevated temperatures. In this work, first direct...
Near-field radiation can exceed the blackbody limit due to contributions from evanescent waves. One promising approach further enhance near-field beyond existing bulk materials is utilize metamaterials or metasurfaces made subwavelength plasmonic structures. In this work, we investigate thermal between complex structures with higher-order symmetry and degeneracy, which crucial for understanding radiative heat exchange at extremely small gaps. We demonstrate that introduction of degeneracy...
Large-pixel-array infrared emitters are attractive in the applications of imaging and detection. However, array scale has been restricted traditional technologies. Here, we demonstrated a light-driven photothermal transduction approach for an ultralarge pixel emitter. A metal-black coating with nanoporous structures silicon (Si) layer microgap were proposed to manage thermal input output issues. The effects nanoscale black microscale Si investigated. Remarkable modulation could be obtained...
Plasmonic metamaterials with strong localized surface plasmon resonances (LSPRs) have been improved by incorporating a nano-opto-electro-mechanical system (NOEMS) for tunable optical and electrical responses. However, conventional NOEMS devices suffer from the inefficient free-space coupling due to limited design of reconfigurable antennas low tunability electrostatic pull-in moving parts. In this paper, we propose efficient mid-infrared plasmonic nanoslits variable nanometer-sized gaps...
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...