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Super-Resolution Displacement Spectroscopic Sensing over a Surface “Rainbow” Article

Lyu Zhou, Nan Zhang, Chang Chieh Hsu, Matthew Singer, Xie Zeng, Yizheng Li, Haomin Song, Josep Jornet, Yun Wu, Qiaoqiang Gan

Engineering 2022, Volume 17, Issue 10,   Pages 75-81 doi: 10.1016/j.eng.2022.03.018

Abstract: Here, we report a unique “rainbow” trapping metasurface for on-chip spectrometers and sensorsoptical microscope system resolves a displacement of the resonant position within 35 nm on the plasmonic rainbowtrapping metasurface with a tiny area as small as 0.002 mm2.This unique feature of the spatial manipulation of efficiently coupled rainbow plasmonic resonances reveals

Keywords： Rainbow trapping     Metasurface     Surface plasmon polaritons     Super-resolution displacement     On-chip biosensing    

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Plasmonic light trapping for enhanced light absorption in film-coupled ultrathin metamaterial thermophotovoltaic

Qing NI, Hassan ALSHEHRI, Yue YANG, Hong YE, Liping WANG

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 185-194 doi: 10.1007/s11708-018-0522-x

Abstract: Ultrathin cells have gained increasing attention due to their potential for reduced weight, reduced cost and increased flexibility. However, the light absorption in ultrathin cells is usually very weak compared to the corresponding bulk cells. To achieve enhanced photon absorption in ultrathin thermophotovoltaic (TPV) cells, this work proposed a film-coupled metamaterial structure made of nanometer-thick gallium antimonide (GaSb) layer sandwiched by a top one-dimensional (1D) metallic grating and a bottom metal film. The spectral normal absorptance of the proposed structure was calculated using the rigorous coupled-wave algorithm (RCWA) and the absorption enhancement was elucidated to be attributed to the excitations of magnetic polariton (MP), surface plasmon polariton (SPP), and Fabry-Perot (FP) resonance. The mechanisms of MP, SPP, and FP were further confirmed by an inductor-capacitor circuit model, dispersion relation, and phase shift, respectively. Effects of grating period, width, spacer thickness, as well as incidence angle were discussed. Moreover, short-circuit current density, open-circuit voltage, output electric power, and conversion efficiency were evaluated for the ultrathin GaSb TPV cell with a film-coupled metamaterial structure. This work will facilitate the development of next-generation low-cost ultrathin infrared TPV cells.

Keywords： metamaterial     thermophotovoltaic     plasmonics     light trapping     selective absorption    

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Safety issues of methylglyoxal and potential scavengers

Shiming LI, Siyu LIU, Chi-Tang HO

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3,   Pages 312-320 doi: 10.15302/J-FASE-2017174

Abstract: Having illustrated the mechanisms of MGO trapping in vivo, we advocate the development of efficient

Keywords： reactive carbonyl species     advanced glycation end products     diabetes     brain health     methylglyoxal trapping    

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Review of optical tweezers in vacuum Special Feature on Precision Measurement and Inst

Nan LI, Xun-min ZHU, Wen-qiang LI, Zhen-hai FU, Meng-zhu HU, Hui-zhu HU

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 5,   Pages 655-673 doi: 10.1631/FITEE.1900095

Abstract:

As a versatile tool for trapping and manipulating neutral particles, optical tweezers have been studied

Keywords： Optical tweezers     Optical trapping in vacuum     Optical cooling    

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One-pot hydrothermal fabrication of BiVO/FeO/rGO composite photocatalyst for the simulated solar light-driven degradation of Rhodamine B

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1470-y

Abstract:

• BiVO4/Fe3O4/rGO has excellent photocatalytic activity under solar light radiation.

Keywords： Photocatalysis     Ternary magnetic photocatalyst     Visible-light-driven     Free radicals trapping     Reusability    

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Discussion on the Micro-mechanism of Precious Metals Trapped inPyro-metallurgical Processes by Base Metals and Matte Phase

Chen Jing

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 11-16

Abstract:

The micro-mechanism of precious metals trapped in pyro-metallurgical processes by base metals or their mattes were discussed in present paper .It was forwarded that the reasons for trace amount of precious metals trapped into base metals or matteswere that the melted slag phases possessing very different structure and properties from that the melted base metal or matte phases.For the slag phase, its formation is thought depending on the covalent bonds and the ionic bonds between Si, O atoms and Ca2+, Mg2+, Fe2+ ions to tie up between each other .Because the bonding electrons in the slag phases are all thought as the localized electrons, the precious metal atoms are not stable among them .However, for the metal phase, its formation is thought depending on the metal bonds to bind up together the metal atoms.And because the electrons in the metal phases can move freely among the atoms, the precious metal atoms entering into the metal phase can cause the system free energy decreased .For the melted mattes phase, because it has high conductivities (between 103~104 S·cm -1) at the higher temperature, and its temperature coefficients present the negative values, its conductance belongs to the electron conductance .The properties of the matte are in fact similar with that of metal at their melted state, therefore precious metal atomswill enter into the matte phase, but not the slag phase in matte-smelting process .

Keywords： pyro-metallurgy；matte smelting；trapping；precious metals    

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Dynamic modeling framework of sediment trapped by check-dam networks: A case study of a typical watershed on the chinese loess plateau Article

Pengcheng Sun, Yiping Wu

Engineering 2023, Volume 27, Issue 8,   Pages 209-221 doi: 10.1016/j.eng.2021.12.015

Abstract:

Check-dam construction is an effective and widely used method for sediment trapping in the Yellow

Keywords： Check dams     Dynamic check dam (DCDam)     Loess Plateau     Sediment trapping     SWAT    

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Title Author Date Type Operation

Super-Resolution Displacement Spectroscopic Sensing over a Surface “Rainbow”

Lyu Zhou, Nan Zhang, Chang Chieh Hsu, Matthew Singer, Xie Zeng, Yizheng Li, Haomin Song, Josep Jornet, Yun Wu, Qiaoqiang Gan

Journal Article

Plasmonic light trapping for enhanced light absorption in film-coupled ultrathin metamaterial thermophotovoltaic

Qing NI, Hassan ALSHEHRI, Yue YANG, Hong YE, Liping WANG

Journal Article

Safety issues of methylglyoxal and potential scavengers

Shiming LI, Siyu LIU, Chi-Tang HO

Journal Article

Review of optical tweezers in vacuum

Nan LI, Xun-min ZHU, Wen-qiang LI, Zhen-hai FU, Meng-zhu HU, Hui-zhu HU

Journal Article

One-pot hydrothermal fabrication of BiVO/FeO/rGO composite photocatalyst for the simulated solar light-driven degradation of Rhodamine B

Journal Article

Discussion on the Micro-mechanism of Precious Metals Trapped inPyro-metallurgical Processes by Base Metals and Matte Phase

Chen Jing

Journal Article

Dynamic modeling framework of sediment trapped by check-dam networks: A case study of a typical watershed on the chinese loess plateau

Pengcheng Sun, Yiping Wu

Journal Article