Development of Nanoscale Thermoelectric Coefficient Measurement Technique Through Heating of Nano-Contact of Probe Tip and Semiconductor Sample with AC Current

2006 ◽  
Vol 30 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Kyeongtae Kim ◽  
Gun-Se Jang ◽  
Ohmyoung Kwon
Keyword(s):  
Measurement Technique ◽  
Semiconductor Sample ◽  
Ac Current ◽  
Coefficient Measurement ◽  
Thermoelectric Coefficient

Liquid Diffusion Measurement in Micro/Mini Channels From Full-Field Digital Phase Measurement Interferometry (PMI)

2004 ◽  
Author(s):  
Julie Garvey ◽  
David Newport ◽  
Tara Dalton
Keyword(s):  
Channel Flow ◽  
Measurement Technique ◽  
Phase Measurement ◽  
Small Scale ◽  
Full Field ◽  
Phase Measurements ◽  
Liquid Diffusion ◽  
Mini Channels ◽  
Coefficient Measurement ◽  
Micro Systems

This paper considers division of amplitude interferometry as a means to extract fluid information from micro-systems. Initially the phase measurement technique is analysed and the measurement limitations of mixing measurement are assessed. Accurate phase measurements are then made of the concentration in a 3 dimensional channel flow. A mini sized channel with tow fluid flows at Reynolds numbers of 0.848 and 0.0848 is numerically analysed. The same channel is experimentally tested and the results for the mixing concentration gradients in channel flow are compared with those obtained numerically. The requirement for experimental measurement for accurate measurement of binary liquid diffusion is observed by the variation between experimental and numerical results. The diffusion coefficient measurement verifies PMI as a means of mixture measurement, or more broadly as a phase measurement technique for small-scale, or micro scale, fluidic analysis. PMI’s potential is finally discussed as a measurement technique for concentration, and hence fluidic analysis of micro channel mixing.

Precision AC Current Measurement Technique

NCSLI Measure ◽  
2013 ◽  
Vol 8 (1) ◽  
pp. 36-41
Author(s):  
Richard Timmons ◽  
Tom Barczyk
Keyword(s):  
Measurement Technique ◽  
Current Measurement ◽  
Ac Current

The method of determining the metrological performance of unit reference standards of reflection coefficient in waveguides at millimeter waves

2020 ◽  
pp. 59-63
Author(s):  
A.S. Bondarenko ◽  
A.S. Borovkov ◽  
I.M. Malay ◽  
V.A. Semyonov
Keyword(s):  
Reflection Coefficient ◽  
Millimeter Waves ◽  
Primary Standard ◽  
Reference Standards ◽  
Measurement Scale ◽  
Current State ◽  
Coefficient Measurement ◽  
Mathematical Equations ◽  
Electrodynamic Modeling ◽  
Metrological Performance

The analysis of the current state of the reflection coefficient measurements in waveguides at millimeter waves is carried out. An approach for solving the problem of reproducing the reflection coefficient measurement scale is proposed. Mathematical equations, which are the basis of the reflection coefficient measurement equation are obtained. The method of determining the metrological performance of reflection coefficient unit’s reference standards is developed. The results of electrodynamic modeling and analytical calculations by the developed method are compared. It is shown that this method can be used for reproducing the reflection coefficient unit in the development of the State primary standard.

DC-AC Current Source Converter Using Coupled Inductor

2013 ◽  
Vol 133 (10) ◽  
pp. 978-985
Author(s):  
Katsutoshi Yamanaka ◽  
Hidenori Hara ◽  
Sadao Ishii ◽  
Tsuneo Kume ◽  
Masahito Shoyama
Keyword(s):  
Current Source ◽  
Current Source Converter ◽  
Ac Current

Single-Phase AC-AC Current Source Converter with Improved Performance

2015 ◽  
Vol 135 (12) ◽  
pp. 1237-1238
Author(s):  
Yasuhiko Neba ◽  
Hirokazu Matsumoto ◽  
Yuta Kawasaki
Keyword(s):  
Single Phase ◽  
Current Source ◽  
Current Source Converter ◽  
Ac Current ◽  
Improved Performance
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