Results 41 to 50 of about 235,222 (294)

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Simulation and measurement of optimized microwave reflectivity for carbon nanotube absorber by controlling electromagnetic factors

Scientific Reports, 2017
Heat-treatments may change the defect and surface organic groups of carbon nanotubes (CNTs), and lead to significant changes in the microwave electromagnetic parameter of CNTs.
Danfeng Zhang, Zhifeng Hao, Yannan Qian, Yinxin Huang, Bizeng, Zhenda Yang, Wu Qibai   +6 more
doaj   +1 more source

Giant microwave absorption in fine powders of superconductors [PDF]

, 2018
Enhanced microwave absorption, larger than that in the normal state, is observed in fine grains of type-II superconductors (MgB$_2$ and K$_3$C$_{60}$) for magnetic fields as small as a few $\%$ of the upper critical field.
Bud’ko, Sergey, Canfield, Paul, Canfield, Paul, Csősz, G., Jánossy, A., Kamarás, K., Klupp, G., Kogan, Vladimir, Murányi, F., Márkus, B., Nemes, N., Simon, F.   +11 more
core   +3 more sources

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Metal organic frameworks derived core-shell structured C@TiC nanocomposites with excellent microwave absorption performance

Open Ceramics
With aim to prepare nano-microwave absorption material with excellent microwave absorption performance, core-shell structured C@TiC nanocomposites with tunable nanostructures and morphologies were successfully synthesized through one-step pyrolysis of ...
Yan Wang, Zhihe Xiao, Jian Gu, Weibin Sun, Junyang Jin, Xin Sun   +5 more
doaj   +1 more source

Circular polarization dependent study of the microwave photoconductivity in a two-dimensional electron system

, 2005
The polarization dependence of the low field microwave photoconductivity and absorption of a two-dimensional electron system has been investigated in a quasi-optical setup in which linear and any circular polarization can be produced in-situ.
A. L. Zakharov, B. Gorshunov, C. Jiang, F. Kuchar, G. Kozlov, J. H. Smet, K. von Klitzing, K. West, L. Pfeiffer, M. Dressel, R. Meisels, S. I. Dorozhkin, V. Umansky, V. I. Ryzhii, V. I. Ryzhii   +14 more
core   +1 more source

Photodetection of propagating quantum microwaves in circuit QED [PDF]

, 2009
We develop the theory of a metamaterial composed of an array of discrete quantum absorbers inside a one-dimensional waveguide that implements a high-efficiency microwave photon detector.
Bouchiat V, Bouwmeester D, Devoret M H Wallraff A Martinis J M, Englert B G U Mangano G Mariantoni M Gross R Siewert J Solano E, Enrique Solano, Gross R, Guillermo Romero, Helmer F, Juan José García-Ripoll, Kumar S DiVincenzo D P, Leonhardt U, Mariantoni M Storcz M J Wilhelm F K Oliver W D Emmert A Marx A Gross R Christ H Solano E   +11 more
core   +3 more sources

Rational Device Design and Doping‐Controlled Performance in Fast‐Response π‐Ion Gel Transistors

Advanced Functional Materials, EarlyView.
π‐Ion gel transistors (PIGTs) achieve extraordinary transconductance and stability through device configuration optimization, high‐mobility conjugated polymer selection, and hole scavenger doping. The optimized PIGTs maintain performance on flexible substrates, enabling printed, fast‐response, and wearable electronics.
Masato Kato, Soh Kushida, Nafees Umar Draz, Dan Kyotani, Emanuel Smarsly, Kyota Yoshinaga, Wenhao He, Uwe H. F. Bunz, Kazuhiro Marumoto, Tatsuya Mori, Yohei Yamamoto   +10 more
wiley   +1 more source

Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism

Remote Sensing, 2022
The precise calculation of atmospheric absorption in a microwave band is highly important for atmospheric remote-sensing with ground-based and satellite-borne radiometers, as it is a key element in procedures for temperature, humidity or trace gas ...
Mikhail V. Belikovich, Dmitriy S. Makarov, Evgeny A. Serov, Mikhail Yu. Kulikov, Alexander M. Feigin   +4 more
doaj   +1 more source

A theoretical study of microwave beam absorption by a rectenna [PDF]

, 1980
The rectenna's microwave power beam absorption limit was theoretically confirmed by two mathematical models descriptive of the microwave absorption process; first one model was based on the current sheet equivalency of a large planar array above a ...
Ott, J. H., Rice, J. S., Thorn, D. C.
core   +2 more sources