Diffusion Couple Technique: A Research Tool in Materials Science

2017 ◽  
pp. 207-275 ◽  
Author(s):  
Alexander Kodentsov ◽  
Aloke Paul
Keyword(s):  
Diffusion Couple ◽  
Materials Science ◽  
Research Tool ◽  
Diffusion Couple Technique

High-Qe Photodetector for Laser Confocal

1998 ◽  
Vol 4 (S2) ◽  
pp. 418-419
Author(s):  
J. Pawley ◽  
M. Blouke ◽  
J. Janesick
Keyword(s):  
Laser Power ◽  
Materials Science ◽  
Confocal Microscope ◽  
Data Rate ◽  
Research Tool ◽  
Biological Applications ◽  
Fluorescent Marker ◽  
The Past ◽  
Optical Photon ◽  
Laser Confocal Microscope

The laser confocal microscope (LCM) is now an established research tool in biology and materials science. In biological applications, it is usually employed to detect the location of fluorescent marker molecules and, under these conditions, detected signal levels from bright areas often represent <20 photons/pixel (assuming a standard 1.6 μs pixel time) while those from dark areas are likely to average <1 photon/pixel. Although this data rate limits the speed at which information can be derived from the specimen, saturation of the fluorophor, photobleaching of the dye, and phototoxicity often prevent it being increased by simply using more laser power. Over the past 10 years, the optical photon efficiency of commercial confocal instruments has improved significantly and it is now reaching the point where further improvement is becoming very expensive. The only component is which a significant improvement is still possible is the photodetector.

Interdiffusion in Nb-Mo, Nb-Ti and Nb-Zr Systems

2012 ◽  
Vol 323-325 ◽  
pp. 491-496 ◽  
Author(s):  
Soma Prasad ◽  
Aloke Paul
Keyword(s):  
Activation Energy ◽  
Diffusion Coefficient ◽  
Diffusion Couple ◽  
Impurity Diffusion ◽  
Impurity Diffusion Coefficient ◽  
Different Temperatures ◽  
Diffusion Couple Technique ◽  
Interdiffusion Coefficients

Diffusion couple technique is used to study interdiffusion in Nb-Mo, Nb-Ti and Nb-Zr systems. Interdiffusion coefficients at different temperatures and compositions are determined using the relation developed by Wagner. The change in activation energy for interdiffusion with composition is determined. Further, impurity diffusion coefficient of the species are determined and compared with the available data in literature.

scholarly journals Phase relations in the Fe-Cr-O system at 1200°C investigated by means of a diffusion couple technique

1980 ◽  
Vol 14 (3) ◽  
pp. 207-215 ◽  
Author(s):  
M. A. J. Th. Laheij ◽  
F. J. J. van Loo ◽  
R. Metselaar
Keyword(s):  
Diffusion Couple ◽  
Phase Relations ◽  
Diffusion Couple Technique

Determination of phase diagrams using the diffusion couple technique

Rare Metals ◽  
2006 ◽  
Vol 25 (5) ◽  
pp. 427-430 ◽  
Author(s):  
H XU ◽  
Y DU ◽  
Y ZHOU ◽  
Z JIN
Keyword(s):  
Diffusion Couple ◽  
Phase Diagrams ◽  
Diffusion Couple Technique
Sign in / Sign up

Export Citation Format

Share Document