Physical Mechanisms of High-Enthalpy Initiation

2015 ◽  
Vol 51 (6) ◽  
Keyword(s):  
High Enthalpy ◽  
Physical Mechanisms

Physical mechanisms of high-enthalpy initiation

2015 ◽  
Vol 51 (6) ◽  
pp. 700-709 ◽  
Author(s):  
A. P. Ershov ◽  
A. O. Kashkarov ◽  
E. R. Pruuel
Keyword(s):  
High Enthalpy ◽  
Physical Mechanisms

Strain analysis with nanometer resolution using a conventional transmission electron microsopy technique: electron diffraction contrast imaging revisited

1995 ◽  
Vol 53 ◽  
pp. 168-169
Author(s):  
Koenraad G F Janssens ◽  
Omer Van der Biest ◽  
Jan Vanhellemont ◽  
Herman E Maes ◽  
Robert Hull
Keyword(s):  
Electron Diffraction ◽  
Strain Field ◽  
Elastic Strain ◽  
Strain Analysis ◽  
Local Strain ◽  
Contrast Imaging ◽  
Strain Characterization ◽  
Physical Mechanisms ◽  
Diffraction Contrast ◽  
Transmission Electron

There is a growing need for elastic strain characterization techniques with submicrometer resolution in several engineering technologies. In advanced material science and engineering the quantitative knowledge of elastic strain, e.g. at small particles or fibers in reinforced composite materials, can lead to a better understanding of the underlying physical mechanisms and thus to an optimization of material production processes. In advanced semiconductor processing and technology, the current size of micro-electronic devices requires an increasing effort in the analysis and characterization of localized strain. More than 30 years have passed since electron diffraction contrast imaging (EDCI) was used for the first time to analyse the local strain field in and around small coherent precipitates1. In later stages the same technique was used to identify straight dislocations by simulating the EDCI contrast resulting from the strain field of a dislocation and comparing it with experimental observations. Since then the technique was developed further by a small number of researchers, most of whom programmed their own dedicated algorithms to solve the problem of EDCI image simulation for the particular problem they were studying at the time.

Injecting Inter-Layers and the Built-in Potential of Blue Polymer Light-Emitting Diodes

2000 ◽  
Vol 660 ◽  
Author(s):  
Thomas M. Brown ◽  
Ian S. Millard ◽  
David J. Lacey ◽  
Jeremy H. Burroughes ◽  
Richard H. Friend ◽  
...  
Keyword(s):  
Indium Tin Oxide ◽  
Light Emitting Diodes ◽  
Basic Structure ◽  
Thin Layers ◽  
Carrier Injection ◽  
Semiconducting Polymer ◽  
Light Emitting ◽  
Physical Mechanisms ◽  
Organic Solid ◽  
Polymer Light Emitting Diodes

ABSTRACTThe semiconducting-polymer/injecting-electrode heterojunction plays a crucial part in the operation of organic solid state devices. In polymer light-emitting diodes (LEDs), a common fundamental structure employed is Indium-Tin-Oxide/Polymer/Al. However, in order to fabricate efficient devices, alterations to this basic structure have to be carried out. The insertion of thin layers, between the electrodes and the emitting polymer, has been shown to greatly enhance LED performance, although the physical mechanisms underlying this effect remain unclear. Here, we use electro-absorption measurements of the built-in potential to monitor shifts in the barrier height at the electrode/polymer interface. We demonstrate that the main advantage brought about by inter-layers, such as poly(ethylenedioxythiophene)/poly(styrene sulphonic acid) (PEDOT:PSS) at the anode and Ca, LiF and CsF at the cathode, is a marked reduction of the barrier to carrier injection. The electro- absorption results also correlate with the electroluminescent characteristics of the LEDs.

THERMOCHEMICAL BEHAVIOR AND HEAT TRANSFER IN HYPERSONIC THERMAL BOUNDARY LAYER WITH HIGH-ENTHALPY DISSOCIATED CARBON-OXYGEN GAS MIXTURE

2018 ◽  
Author(s):  
Xiaofeng Yang ◽  
Yewei Gui ◽  
Wei Tang ◽  
Yanxia Du ◽  
Guangming Xiao ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Thermal Boundary Layer ◽  
Gas Mixture ◽  
High Enthalpy ◽  
Oxygen Gas

Evaluation of real-gas phenomena in high-enthalpy aerothermal test facilities - A review

10.2514/3.901 ◽  
1997 ◽  
Vol 11 ◽  
pp. 330-338
Author(s):  
Arif Masud ◽  
Choon L. Tham ◽  
Chul Park
Keyword(s):  
Real Gas ◽  
High Enthalpy

Skin friction gauges for high enthalpy impulsive flows

1993 ◽  
Author(s):  
Rodney Bowersox ◽  
Joseph Schetz
Keyword(s):  
Skin Friction ◽  
High Enthalpy ◽  
Impulsive Flows

Generation and Characterization of High Enthalpy CO2 Flow by Laser Driven Plasma Wind Tunnel

2013 ◽  
Author(s):  
Makoto Matsui ◽  
Shingo Yoneda ◽  
Satoshi Nomura ◽  
Yoshiki Yamagiwa ◽  
Kimiya Komurasaki ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
High Enthalpy ◽  
Co2 Flow
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