Transfer of gas-ion momentum and energy to an electrically conductive surface partially coated by a thin dielectric layer

1987 ◽  
Vol 27 (4) ◽  
pp. 478-485 ◽  
Author(s):  
V. A. Shuvalov
Keyword(s):  
Dielectric Layer ◽  
Electrically Conductive ◽  
Conductive Surface ◽  
Thin Dielectric Layer

Energy Harvesting Using Galvanically Synthesized Piezoelectric ZnO Nanorods on Flexible Polymer Film

2015 ◽  
Author(s):  
Christopher Oshman ◽  
Julie Chauvin ◽  
Charles Opoku ◽  
Abhishek S. Dahiya ◽  
Daniel Alquier ◽  
...  
Keyword(s):  
Zno Nanorods ◽  
Reference Sample ◽  
Electrically Conductive ◽  
Flexible Polymer ◽  
Conductive Surface ◽  
Commercial Market ◽  
Bending Loads ◽  
Pet Film ◽  
Electro Negativity ◽  
Piezoelectric Nanogenerators

This paper reports advancement in bringing flexible piezoelectric nanogenerators (NGs) closer to being realized in a commercial market. We have adopted a method to synthesize piezoelectric ZnO nanorods (NRs) on any electrically conductive surface without a seed layer or a specially selected substrate with matching lattice spacing. By contacting a metal with a dissimilar electro-negativity, a galvanic cell is created in the electrolyte growth medium. We have demonstrated the performance of the as grown NRs on a thin NG using common PET film. The device produced voltages in excess of three times higher than a parallel fabricated reference sample under bending loads.

Three Dimensional Bacteria Concentration by Negative Dielectrophoresis

2013 ◽  
Vol 699 ◽  
pp. 251-256
Author(s):  
T. Hisajima ◽  
L. Mao ◽  
K. Shinzato ◽  
M. Nakano ◽  
J. Suehiro
Keyword(s):  
Escherichia Coli ◽  
Numerical Simulation ◽  
Dielectric Layer ◽  
Parallel Plate ◽  
Three Dimensional ◽  
Three Dimension ◽  
Escherichia Coli Cells ◽  
Opposite Electrode ◽  
Novel Method ◽  
Thin Dielectric Layer

Thispaper reports a novel method to concentrate bacteria in three-dimension by negative dielectrophoretic (n-DEP) force in a microchannel. This was achieved by placing a thin dielectric layer on one of a pair of parallel plate electrodes. The dielectric layer having a home-plate like pentagonal shape, forms a gradient of electric field causing n-DEP. A three-dimensional numerical simulation of bacteria trajectory predicts that bacteria flowing a microchannel were three-dimensionally concentrated beneath the tip of the pentagonal dielectric thin layer. The trajectory and concentration of bacteria under n-DEP force were also experimentally confirmed using Escherichia coli cells. Bacteria moved along edges of the dielectric layer and were pushed to the opposite electrode, resulting in their concentration in three-dimension. The proposed device might be applicable to selective concentration of bacteria depending on their dielectric properties.

STUDY OF PHASED ARRAYS OF SLOTTED WAVEGUIDE ANTENNAS WITH DIELECTRIC FILLING

2021 ◽  
pp. 42-47
Author(s):  
A. O. Pelevin ◽  
A. M. Lerer ◽  
G. F. Zargano
Keyword(s):  
Computer Simulation ◽  
Antenna Arrays ◽  
Dielectric Layer ◽  
Phased Arrays ◽  
Frequency Range ◽  
Phased Antenna Arrays ◽  
Operating Frequency Range ◽  
Slotted Waveguide ◽  
Dielectric Filling ◽  
Thin Dielectric Layer

The article describes the computer simulation of phased antenna arrays consisting of slotted waveguide antennas with air and dielectric filling. It is shown that inser-tion of a thin dielectric layer shifts the operating frequency range of phased anten-na arrays by 1 GHz or more down in frequency while maintaining directional char-acteristics.

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