scholarly journals Metal-Organic Hybrid Metamaterials for Spectral-Band Selective Active Terahertz Modulators

2021 ◽  
Vol 11 (6) ◽  
pp. 2765
Author(s):  
Hyung Keun Yoo ◽  
Soo Bin Cho ◽  
Sae June Park ◽  
Yeong Hwan Ahn ◽  
Chul Kang ◽  
...  
Keyword(s):  
Spectral Band ◽  
Acid Methyl Ester ◽  
Ring Resonators ◽  
Fullerene Derivative ◽  
Thz Radiation ◽  
Organic Thin Film ◽  
Organic Hybrid ◽  
Spectral Bands ◽  
Excited Carrier ◽  
Metal Organic

Optically controlled spectral-band selective terahertz (THz) modulators based on metal-organic hybrid metamaterials were investigated. An artificially structured material, which consists of two single split-ring resonators put together on the split gap side, was patterned on a silicon substrate to generate frequency-selective properties. An active layer of an organic thin film (fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester, also called PCBM) was deposited on the metamaterial-silicon structure for modulating the transmission of incident THz radiation. The metal-organic hybrid metamaterials enabled active control of spectral bands present in the transmission spectra of THz waves. In addition, the changes in the photo-excited carrier density due to the transfer of charges between the layers were quantitatively analyzed by simulation results.

In situ fabrication of metal–organic hybrid gels in a capillary for online enrichment of trace analytes in aqueous samples

2012 ◽  
Vol 48 (33) ◽  
pp. 3966 ◽  
Author(s):  
Yuling Hu ◽  
Yifeng Fan ◽  
Zelin Huang ◽  
Chaoyong Song ◽  
Gongke Li
Keyword(s):  
Aqueous Samples ◽  
Hybrid Gels ◽  
Organic Hybrid ◽  
In Situ Fabrication ◽  
Metal Organic

A series of porous 3D inorganic–organic hybrid framework crystalline materials based on 5-aminoisophthalic acid for photocatalytic degradation of crystal violet

2021 ◽  
Vol 45 (7) ◽  
pp. 3432-3440
Author(s):  
Yu Xin ◽  
Jun Zhou ◽  
Yong Heng Xing ◽  
Feng Ying Bai ◽  
Li Xian Sun
Keyword(s):  
Photocatalytic Degradation ◽  
Crystal Violet ◽  
Metal Organic Frameworks ◽  
Synthetic Method ◽  
Crystalline Materials ◽  
Organic Hybrid ◽  
Hybrid Framework ◽  
Metal Organic ◽  
Degradation Properties

Seven 3D metal-organic frameworks have been designed and synthesized by the hydrothermal synthetic method based on the ligand 5-aminoisophthalic acid. Complexes 1-4 have better photocatalytic degradation properties for dyes CV.

Lone-Pair-Electron-Driven Ionic Displacements in a Ferroelectric Metal–Organic Hybrid

2016 ◽  
Vol 55 (20) ◽  
pp. 10337-10342 ◽  
Author(s):  
Wen-Ping Zhao ◽  
Chao Shi ◽  
Alessandro Stroppa ◽  
Domenico Di Sante ◽  
Fanica Cimpoesu ◽  
...  
Keyword(s):  
Lone Pair ◽  
Organic Hybrid ◽  
Lone Pair Electron ◽  
Metal Organic

scholarly journals TOPOGRAPHIC EFFECT ON SPECTRAL VEGETATION INDICES FROM LANDSAT TM DATA: IS TOPOGRAPHIC CORRECTION NECESSARY?

2016 ◽  
Vol 22 (1) ◽  
pp. 95-107 ◽  
Author(s):  
Eder Paulo Moreira* ◽  
Márcio de Morisson Valeriano ◽  
Ieda Del Arco Sanches ◽  
Antonio Roberto Formaggio
Keyword(s):  
Near Infrared ◽  
Incidence Angle ◽  
Spectral Band ◽  
Vegetation Indices ◽  
Topographic Effect ◽  
Topographic Correction ◽  
Spectral Bands ◽  
Spectral Vegetation Indices ◽  
Current Availability ◽  
Elevation Model

The full potentiality of spectral vegetation indices (VIs) can only be evaluated after removing topographic, atmospheric and soil background effects from radiometric data. Concerning the former effect, the topographic effect was barely investigated in the context of VIs, despite the current availability correction methods and Digital elevation Model (DEM). In this study, we performed topographic correction on Landsat 5 TM spectral bands and evaluated the topographic effect on four VIs: NDVI, RVI, EVI and SAVI. The evaluation was based on analyses of mean and standard deviation of VIs and TM band 4 (near-infrared), and on linear regression analyses between these variables and the cosine of the solar incidence angle on terrain surface (cos i). The results indicated that VIs are less sensitive to topographic effect than the uncorrected spectral band. Among VIs, NDVI and RVI were less sensitive to topographic effect than EVI and SAVI. All VIs showed to be fully independent of topographic effect only after correction. It can be concluded that the topographic correction is required for a consistent reduction of the topographic effect on the VIs from rugged terrain.

Five isomorphous polyoxometalate-based inorganic-organic hybrid materials comprising 2D metal-organic layers

2020 ◽  
Vol 286 ◽  
pp. 121302
Author(s):  
Yingying Wu ◽  
Ying Liu ◽  
Yijiao Huang ◽  
Ge Xiao ◽  
Yamin Li ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Organic Layers ◽  
Organic Hybrid ◽  
Metal Organic

scholarly journals Radiative Properties and Numerical Modeling of C4F7N-CO2-O2 Thermal Plasma

2019 ◽  
Vol 6 (2) ◽  
pp. 144-147
Author(s):  
M. Gnybida ◽  
Ch. Ruempler ◽  
V. R. T. Narayanan
Keyword(s):  
Thermal Plasma ◽  
Spectral Band ◽  
Optimization Procedure ◽  
Optimal Number ◽  
Radiative Properties ◽  
Absorption Coefficients ◽  
Medium Voltage ◽  
Spectral Bands ◽  
Computational Fluid Dynamics Cfd ◽  
Low Global Warming Potential

C<sub>4</sub>F<sub>7</sub>N and C<sub>4</sub>F<sub>7</sub>N-CO<sub>2</sub> mixtures are considered as alternatives to SF<sub>6</sub> for use in medium voltage gas insulated switchgear applications (GIS), due to the low global warming potential and good dielectric properties of C<sub>4</sub>F<sub>7</sub>N. Current work is focused on the calculation of radiative properties (absorption coefficients) of C<sub>4</sub>F<sub>7</sub>N-CO<sub>2</sub> thermal plasma and computational fluid dynamics (CFD) simulations of free burning C<sub>4</sub>F<sub>7</sub>N-CO<sub>2</sub> arcs that are stabilized by natural convection. Absorption coefficients of C<sub>4</sub>F<sub>7</sub>N-CO<sub>2</sub> plasma used in the CFD model are derived from spectral absorption coefficients by Planck averaging. An optimization procedure has been applied to find the optimal number of spectral bands as well as spectral band interval boundaries. Radiation and flow model results for C<sub>4</sub>F<sub>7</sub>N-CO<sub>2</sub> in comparison to SF<sub>6</sub> and air are provided and discussed.

scholarly journals Carrierless Immobilization Route for Highly Robust Metal–Organic Hybrid Enzymes

ACS Omega ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 5172-5179 ◽  
Author(s):  
Andoni Rodriguez-Abetxuko ◽  
Maria C. Morant-Miñana ◽  
Mato Knez ◽  
Ana Beloqui
Keyword(s):  
Organic Hybrid ◽  
Metal Organic ◽  
Hybrid Enzymes

Redox-Responsive Copper(I) Metallogel: A Metal–Organic Hybrid Sorbent for Reductive Removal of Chromium(VI) from Aqueous Solution

Langmuir ◽  
2014 ◽  
Vol 30 (26) ◽  
pp. 7833-7841 ◽  
Author(s):  
Sougata Sarkar ◽  
Soumen Dutta ◽  
Partha Bairi ◽  
Tarasankar Pal
Keyword(s):  
Aqueous Solution ◽  
Organic Hybrid ◽  
Chromium Vi ◽  
Hybrid Sorbent ◽  
Redox Responsive ◽  
Metal Organic
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