scholarly journals Detection of sub-terahertz photoacoustic effect for non-contact material sensing

2021 ◽  
Vol 18 ◽  
pp. 100239
Author(s):  
Natsumi Ichikawa ◽  
Yasuaki Monnai
Keyword(s):  
Contact Material ◽  
Photoacoustic Effect

Nonlinear photoacoustic effect of semiconductors in dc electric field

1990 ◽  
Vol 68 (8) ◽  
pp. 3865-3871 ◽  
Author(s):  
Jian‐chun Cheng ◽  
Shu‐yi Zhang ◽  
Yue‐sheng Lu
Keyword(s):  
Electric Field ◽  
Photoacoustic Effect ◽  
Dc Electric Field

Metal burial: Understanding caching behaviour and contact material culture in Australia's NE Kimberley

2021 ◽  
Vol 21 (1) ◽  
pp. 28-52
Author(s):  
Sam Harper ◽  
Ian Waina ◽  
Ambrose Chalarimeri ◽  
Sven Ouzman ◽  
Martin Porr ◽  
...  
Keyword(s):  
Material Culture ◽  
Cultural Practices ◽  
Raw Materials ◽  
Cross Cultural ◽  
Contact Material ◽  
Northern Australia ◽  
Assemblage Theory ◽  
Close Proximity ◽  
History Of ◽  
Human Burials

This paper explores identity and the recursive impacts of cross-cultural colonial encounters on individuals, cultural materials, and cultural practices in 20th-century northern Australia. We focus on an assemblage of cached metal objects and associated cultural materials that embody both Aboriginal tradition and innovation. These cultural materials were wrapped in paperbark and placed within a ring of stones, a bundling practice also seen in human burials in this region. This ‘cache' is located in close proximity to rockshelters with rich, superimposed Aboriginal rock art compositions. However, the cache shelter has no visible art, despite available wall space. The site shows the utilisation of metal objects as new raw materials that use traditional techniques to manufacture a ground edge metal axe and to sharpen metal rods into spears. We contextualise these objects and their hypothesised owner(s) within narratives of invasion/contact and the ensuing pastoral history of this region. Assemblage theory affords us an appropriate theoretical lens through which to bring people, places, objects, and time into conversation.

Novel Design of 3-D Microstructure Contact Material Generating Autoexcitation Magnetic Field

2021 ◽  
pp. 1-6
Author(s):  
Bosen Lei ◽  
Kai Cheng ◽  
Chuncai Kong ◽  
Li Chen ◽  
Cheng Zhou ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Contact Material ◽  
Novel Design

Numerical Analysis on the Electrical Performance of Microstructured Environmentally-Friendly Electrical Contact Material Ag/SnO2

2013 ◽  
Vol 419 ◽  
pp. 355-359
Author(s):  
Lei Wang ◽  
Wei Li Liu ◽  
Le Sheng Chen
Keyword(s):  
Numerical Simulation ◽  
Electrical Contact ◽  
Environmentally Friendly ◽  
Weight Percent ◽  
Diameter Ratio ◽  
Electrical Performance ◽  
Structural Parameter ◽  
Contact Material ◽  
Electrical Contact Material ◽  
Length To Diameter Ratio

The paper analyzes the influence of structural parameters on the electrical performance of the microstructured environmentally-friendly electrical contact material Ag/SnO2 by using numerical simulation method.The numerical results show that the reisitivity of fiber-like electrical contact material Ag/SnO2 is significantly reduced compared with the resistivity of Ag/SnO2 adding reinforcing nanoparticles in the traditional way.So the fiber-like electrical contact material Ag/SnO2 exhibits higher conductivity in macro. On further analysis, we learn that the resistivity of fibrous electrical contact materials is related to weight percent of reinforced phase, and micro-structural parameter of length to diameter ratio. The resistivity increases as weight percent of reinforced phase increases,and decreases non-linearly with micro-structural parameter of length to diameter ratio increasing.This demonstrates that numerical simulation is one of effective methods for analysis of the electrical performance of the microstructured electrical contact material.

Properties of Nanocrystalline CuCr50 Contact Material

2005 ◽  
Vol 7 (12) ◽  
pp. 1114-1117 ◽  
Author(s):  
C. Zhang ◽  
Z. Yang ◽  
Y. Wang ◽  
B. Ding
Keyword(s):  
Contact Material

An underwater ranging system based on photoacoustic effect occurring on target surface

2016 ◽  
Author(s):  
Kai Ni ◽  
Kai Hu ◽  
Xinghui Li ◽  
Lidai Wang ◽  
Qian Zhou ◽  
...  
Keyword(s):  
Target Surface ◽  
Photoacoustic Effect
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