Catalytic Reaction Assisted by Plasma or Electric Field

2017 ◽  
Vol 17 (8) ◽  
pp. 726-738 ◽  
Author(s):  
Shuhei Ogo ◽  
Yasushi Sekine
Keyword(s):  
Electric Field ◽  
Catalytic Reaction

scholarly journals Key factor for the anti-Arrhenius low-temperature heterogeneous catalysis induced by H+ migration: H+ coverage over support

2020 ◽  
Vol 56 (23) ◽  
pp. 3365-3368 ◽  
Author(s):  
Kota Murakami ◽  
Yuta Tanaka ◽  
Ryuya Sakai ◽  
Yudai Hisai ◽  
Sasuga Hayashi ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Low Temperature ◽  
Electric Field ◽  
Catalytic Reaction ◽  
Small Scale ◽  
Heterogeneous Catalytic Reaction ◽  
Heterogeneous Catalytic ◽  
On Demand ◽  
Novel Approach ◽  
Key Factor

Low-temperature heterogeneous catalytic reaction in an electric field is anticipated as a novel approach for on-demand and small-scale catalytic processes.

Three-Way Catalytic Reaction in an Electric Field for Exhaust Emission Control Application

2021 ◽  
Author(s):  
Toru Uenishi ◽  
Ayaka Shigemoto ◽  
Yuki Omori ◽  
Takuma Higo ◽  
Shuhei Ogo ◽  
...  
Keyword(s):  
Electric Field ◽  
Catalytic Reaction ◽  
Emission Control ◽  
Exhaust Emission ◽  
Control Application

Roles of electrostatic interaction in proteins

1996 ◽  
Vol 29 (1) ◽  
pp. 1-90 ◽  
Author(s):  
Haruki Nakamura
Keyword(s):  
Hydrogen Bonds ◽  
Electric Field ◽  
Electrostatic Interaction ◽  
Catalytic Reaction ◽  
Active Site ◽  
Electrostatic Interactions ◽  
Essential Role ◽  
Molecular Assembly ◽  
Dipole Interactions ◽  
Protein Molecules

Electrostatic effects play an essential role in specific molecular recognition and molecular assembly in many biologically important molecules. The specific electric field at the active site also regulates the catalytic reaction of a protein. Moreover, intramolecular or inter-subunit electrostatic interactions, such as saltbridges, hydrogen bonds, and charge-dipole interactions, are considered to work to stabilize protein molecules. Those electrostatic roles recently observed in proteins are reviewed with a description of the origins and principles of electrostatic forces, and analyses will be made using simple models to illuminate the physical basis.

Resolution in photoelectron microscopy

1991 ◽  
Vol 49 ◽  
pp. 458-459
Author(s):  
G. F. Rempfer
Keyword(s):  
Electron Microscopy ◽  
Electric Field ◽  
Ultraviolet Light ◽  
Uniform Field ◽  
Virtual Image ◽  
Lens System ◽  
Photoemission Electron Microscopy ◽  
Planar Electrode ◽  
Electron Lens ◽  
Photoemission Electron

In photoelectron microscopy (PEM), also called photoemission electron microscopy (PEEM), the image is formed by electrons which have been liberated from the specimen by ultraviolet light. The electrons are accelerated by an electric field before being imaged by an electron lens system. The specimen is supported on a planar electrode (or the electrode itself may be the specimen), and the accelerating field is applied between the specimen, which serves as the cathode, and an anode. The accelerating field is essentially uniform except for microfields near the surface of the specimen and a diverging field near the anode aperture. The uniform field forms a virtual image of the specimen (virtual specimen) at unit lateral magnification, approximately twice as far from the anode as is the specimen. The diverging field at the anode aperture in turn forms a virtual image of the virtual specimen at magnification 2/3, at a distance from the anode of 4/3 the specimen distance. This demagnified virtual image is the object for the objective stage of the lens system.

Field-assisted ionization theory for microscopists

1994 ◽  
Vol 52 ◽  
pp. 820-821
Author(s):  
Patrick P. Camus
Keyword(s):  
Electric Field ◽  
Electron Tunneling ◽  
Ionization Probability ◽  
Critical Distance ◽  
Tunneling Probability ◽  
Field Ionization ◽  
Radius Of Curvature ◽  
Field Evaporation ◽  
A Value ◽  
Ion Emission

The theory of field ion emission is the study of electron tunneling probability enhanced by the application of a high electric field. At subnanometer distances and kilovolt potentials, the probability of tunneling of electrons increases markedly. Field ionization of gas atoms produce atomic resolution images of the surface of the specimen, while field evaporation of surface atoms sections the specimen. Details of emission theory may be found in monographs.Field ionization (FI) is the phenomena whereby an electric field assists in the ionization of gas atoms via tunneling. The tunneling probability is a maximum at a critical distance above the surface,xc, Fig. 1. Energy is required to ionize the gas atom at xc, I, but at a value reduced by the appliedelectric field, xcFe, while energy is recovered by placing the electron in the specimen, φ. The highest ionization probability occurs for those regions on the specimen that have the highest local electric field. Those atoms which protrude from the average surfacehave the smallest radius of curvature, the highest field and therefore produce the highest ionizationprobability and brightest spots on the imaging screen, Fig. 2. This technique is called field ion microscopy (FIM).

Linear growth of instabilities on a liquid metal under normal electric field

1993 ◽  
Vol 3 (8) ◽  
pp. 1201-1225 ◽  
Author(s):  
G. N�ron de Surgy ◽  
J.-P. Chabrerie ◽  
O. Denoux ◽  
J.-E. Wesfreid
Keyword(s):  
Liquid Metal ◽  
Electric Field ◽  
Linear Growth ◽  
Normal Electric Field
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