On-line measurement of surface roughness by laser light scattering

2006 ◽  
Vol 17 (6) ◽  
pp. 1496-1502 ◽  
Author(s):  
Rong-Sheng Lu ◽  
Gui Yun Tian
Keyword(s):  
Surface Roughness ◽  
Light Scattering ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Line Measurement ◽  
On Line

Remote Non-Contact Solar Cell Surface Monitoring

2012 ◽  
Author(s):  
Richard Chiou ◽  
Michael Mauk ◽  
Bret Davis
Keyword(s):  
Surface Roughness ◽  
Solar Cell ◽  
Light Scattering ◽  
Cell Surface ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Quality Analysis ◽  
Textured Surfaces ◽  
Cell Manufacturing ◽  
On Line

This paper discusses the design and implementation of a remote non-contact solar cell surface roughness monitoring system as well as resulting data in solar energy manufacturing. The process solution set represents an integrated suite that provides solar cell manufacturing process monitoring, tool and fixture design, visualization, quality analysis, and automation through a remote robotic control system. An experimental study of surface roughness effect on laser light scattering from textured surfaces is described. The results and the system proposed are useful in implementing laser light scattering instruments for on-line monitoring of solar cell manufacturing processes which produce surface roughness patterns.

Identifying moa gastroliths using a video light scattering instrument

1994 ◽  
Vol 68 (1) ◽  
pp. 159-163 ◽  
Author(s):  
Roger G. Johnston ◽  
William G. Lee ◽  
W. Kevin Grace
Keyword(s):  
Surface Roughness ◽  
Light Scattering ◽  
Laser Light ◽  
Ocean Waves ◽  
Laser Light Scattering ◽  
Fossil Bone ◽  
High Degree

When not found with fossil bone, gastroliths (fossil gizzard stones) may be hard to identify. One attribute that is potentially useful is their high degree of surface polish, presumably caused by abrasion in the animal's gizzard. A novel video laser light scattering instrument is used to characterize the surface roughness of suspected moa gastroliths, as well as similar (non-gastrolith) quartz rocks that were polished by ocean waves. The instrument is fairly successful at distinguishing between the two types of samples.

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