scholarly journals A High-Resolution Laser Beam Collimator System with a High-NA lens for a High-Density Ternary Barcode Detection System

2014 ◽  
Vol 2 (4) ◽  
Author(s):  
Hiroo Wakaumi
Keyword(s):  
High Resolution ◽  
Laser Beam ◽  
Detection System ◽  
High Density ◽  
High Na Lens

High Resolution Displacement of Functional Groups onto Fluorocarbon Resin Surface by Using ArF Excimer Laser

1996 ◽  
Vol 451 ◽  
Author(s):  
T. Shimizu ◽  
M. Murahara
Keyword(s):  
Contact Angle ◽  
High Resolution ◽  
Laser Beam ◽  
Thin Layer ◽  
Functional Groups ◽  
Excimer Laser ◽  
Laser Fluence ◽  
Large Area ◽  
Three Solutions ◽  
Arf Excimer Laser

ABSTRACTA Fluorocarbon resin surface was selectively modified by irradiation with a ArF laser beam through a thin layer of NaAlO2, B(OH)3, or H2O solution to give a hydrophilic property. As a result, with low fluence, the surface was most effectively modified with the NaAlO2 solution among the three solutions. However, the contact angle in this case changed by 10 degrees as the fluence changed only 1mJ/cm2. When modifying a large area of the surface, high resolution displacement could not be achieved because the laser beam was not uniform in displacing functional groups. Thus, the laser fluence was successfully made uniform by homogenizing the laser beam; the functional groups were replaced on the fluorocarbon resin surface with high resolution, which was successfully modified to be hydrophilic by distributing the laser fluence uniformly.

3-D High-Density Strain Mapping Procedure Based on High-Resolution CT

2007 ◽  
Vol 539-543 ◽  
pp. 2377-2382 ◽  
Author(s):  
Masakazu Kobayashi ◽  
Hiroyuki Toda ◽  
Tomomi Ohgaki ◽  
Kentaro Uesugi ◽  
David S. Wilkinson ◽  
...  
Keyword(s):  
High Resolution ◽  
Local Strain ◽  
High Ratio ◽  
High Density ◽  
Strain Mapping ◽  
Mapping Procedure ◽  
Model Method ◽  
Model Sample ◽  
Alumina Particles ◽  
X Ray Computed

A tracking procedure for the high-resolution X-ray computed tomography (CT) has been developed in order to measure 3-D local strain within a deforming material in high-density. A dispersion-strengthened copper alloy model sample with alumina particles, which contains micropores, was visualized by the synchrotron radiation CT. The pores observed in reconstructed CT volumes were used as tracking markers. The developed tracking method using a set of matching parameters, which classifies matched, pended and rejected markers, exhibited high ratio of success tracking. Furthermore, the ratio was improved by applying the spring model method, which is one of the particle image velocity (PIV) methods utilized in the field of the fluid mechanics, to the pended markers. The method based on the image analysis of CT imaging volumes provides us 3-D high-density strain mapping.

Focusing laser beam through pinhole using high-resolution stacked-actuator deformable mirror

2021 ◽  
Author(s):  
Alexander N. Nikitin ◽  
Ilya V. Galaktionov ◽  
Julia Sheldakova ◽  
Alexis Kudryashov ◽  
Vadim Samarkin ◽  
...  
Keyword(s):  
High Resolution ◽  
Laser Beam ◽  
Deformable Mirror
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