نتایج جستجو برای: charge transfer

تعداد نتایج: 415483  

Journal: :Nano letters 2016
Beibei Xu Huashan Li Haoqi Li Andrew J Wilson Lin Zhang Ke Chen Katherine A Willets Fei Ren Jeffrey C Grossman Shenqiang Ren

Organic charge-transfer superstructures are enabling new interfacial electronics, such as organic thermoelectrics, spin-charge converters, and solar cells. These carbon-based materials could also play an important role in spin-based electronics due to their exceptionally long spin lifetime. However, to explore these potentials a coherent design strategy to control interfacial charge-transfer in...

Journal: :Journal of the American Chemical Society 2007
Randall H Goldsmith Michael R Wasielewski Mark A Ratner

The ability of multiple spatial pathways to sum coherently and facilitate charge transfer is examined theoretically. The role of multiple spatial pathways in mediating charge transfer has been invoked several times in the recent literature while discussing charge transfer in proteins, while multiple spatial pathways are known to contribute to charge transport in metal-molecule-metal junctions. ...

2014
XiaoJing Zheng Rui Zhang HaoJie Huang

Contact electrification of identical insulating particles has crucial significance for industrial and environmental science, especially in wind-blown granular systems. At the same time, the experimental phenomena of charge transfer first increased and then decreased with the increase of relative humidity has attracted the interest of many researchers. Humidity can affect the charge transfer has...

2011
Annemiek Ter Heijne Olivier Schaetzle Sixto Gimenez Francisco Fabregat-Santiago Juan Bisquert David P. B. T. B Strik Frédéric Barrière Cees J. N Buisman Hubertus V. M. Hamelers David P. B. T. B. Strik Cees J. N. Buisman

In this study, we identified mass and charge transfer resistances for an oxygen reducing biocathode in a microbial fuel cell (MFC) by electrochemical impedance spectroscopy (EIS). The oxygen reducing biocathode was grown using nitrifying sludge as the inoculum. A standard model for charge transfer at the electrode surface combined with diffusion across a boundary layer was used. EIS measurement...

2013
Hyeopgoo Yeo

Abstract This paper introduces a new parasitic-insensitive charge transfer circuit using active output voltage feedback. The proposed parasitic-insensitive charge transfer circuit uses a passive charge transfer circuit for maximum output voltage dynamic range. A feedback loop between the transfer and output nodes is formed using a unity-gain opamp to make the two nodes’ potentials same, which p...

Journal: :Journal of the American Chemical Society 2005
K R Justin Thomas Alexis L Thompson Aathimanikandan V Sivakumar Christopher J Bardeen S Thayumanavan

Nonconjugated dendrimers, which are capable of funneling energy from the periphery to the core followed by a charge-transfer process from the core to the periphery, have been synthesized. The energy and electron donors involve a diarylaminopyrene unit and are incorporated at the periphery of these dendrimers. The energy and electron acceptor is at the core of the dendrimer, which involves a chr...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2002
Torsten Fiebig Chaozhi Wan Ahmed H Zewail

As a fluorescent isomer of adenine, 2-aminopurine (Ap) is a powerful probe of DNA dynamics and DNA-mediated charge transfer processes. Here, we report studies with femtosecond resolution of the excited-state dynamics of Ap in various solvents and in bimolecular complexes with nucleotides. Using time-resolved transient absorption and fluorescence up-conversion methods we identify charge transfer...

Journal: :Physical review letters 2000
R Bruinsma G Grüner M R D'Orsogna J Rudnick

We propose a model Hamiltonian for charge transfer along the DNA double helix with temperature-driven fluctuations in the base pair positions acting as the rate limiting factor for charge transfer between neighboring base pairs. We compare the predictions of the model with the recent work of Barton and Zewail on the unusual two-stage charge transfer of DNA.

2010
J. Schoene M. A. Uman V. A. Rakov

[1] We examined data on 117 return strokes in 31 rocket‐and‐wire‐triggered lightning flashes acquired during experiments conducted from 1999 through 2004 at the International Center for Lightning Research and Testing at Camp Blanding, Florida, in order to compare the peak currents of the lightning return strokes with the corresponding charges transferred during various time intervals within 1 m...

Epoxy and dicyclopentadien (DCPD) are two common healing agents, which are introduced into epoxy matrix through encapsulation in order to prepare self-healing composites. In a comparative study, the compatibility of healing agents and epoxy matrix is investigated through experimental tests and DFT calculations. The interaction energy is considered to be the determinative parameter in DFT calcul...

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