One‐Dimensional Interaction of a Plasma with a Ruby‐Laser Beam

1971 ◽  
Vol 42 (13) ◽  
pp. 5492-5494 ◽  
Author(s):  
A. G. Engelhardt
Keyword(s):  
Laser Beam ◽  
Ruby Laser ◽  
One Dimensional ◽  
Dimensional Interaction

Quasi-one-dimensional thermal deformation and displacement of the surface of a solid in a pulsed laser beam

1997 ◽  
Vol 39 (12) ◽  
pp. 1985-1988
Author(s):  
S. V. Vintsents ◽  
S. G. Dmitriev ◽  
K. I. Spiridonov
Keyword(s):  
Laser Beam ◽  
Thermal Deformation ◽  
Pulsed Laser ◽  
One Dimensional ◽  
Pulsed Laser Beam

One-Dimensional Diffraction Grating of Poly(Methacrylic Acid) Brushes For The Rapid Label-Free Detection of Yersinia Pestis With a Reflective Laser System

2021 ◽  
Author(s):  
Feng-Ping Lin ◽  
Hui-Ling Hsu ◽  
Hui-Chung Lin ◽  
Hsin-Hsien Huang ◽  
Chien-Hsing Lu ◽  
...  
Keyword(s):  
Laser Beam ◽  
Yersinia Pestis ◽  
Methacrylic Acid ◽  
Limit Of Detection ◽  
Incident Angle ◽  
Diffraction Effect ◽  
Label Free ◽  
Diffraction Intensity ◽  
One Dimensional ◽  
Label Free Detection

Abstract Background: Because of the low sensitivity of commercial products, development of a facile method to rapidly identify plague on-site remains highly attractive. Line arrays of poly(methacrylic acid) (PMAA) brushes were grafted using a photoresist template to fabricate one-dimensional diffraction gratings (DGs). The as-prepared samples first bound protein G to immobilize and orient the tails of the antibody of Yersinia pestis (abY). A laser beam was employed to analyze the 2D and 3D reflective signals of DGs at an incident angle of 45°. The abY-tailed PMAA DG possessed an optical feature with a characteristic diffraction effect along the SII, in which the projection of the laser beam on the plane of the DG chip was parallel to the strips, and ST configurations, in which they were perpendicular. A fluidic diffraction chip based on the abY-tailed PMMA DG was fabricated to examine the ability to detect Yersinia pestis along the ST configuration. Results: Upon flowing through the chip, Yersinia pestis was attached to the abY-tailed PMMA DG, which changed the diffraction intensity. The degree of the diffraction intensity exhibited a linear response to Yersinia pestis at concentrations from 102 to 107 CFU mL−1, and the limit of detection was 75 CFU mL−1, 1000 times lower than a commercial product (Alexter Bio-Detect Test). The diffractive sensor could selectively detect Yersinia pestis in spiked serum samples, with excellent standard deviation and recovery. Conclusion: Our platform provides a simple, label-free method for on-site plague diagnosis to prevent the highly rapid transmission of plague.

Polarization of Ruby Laser Beam

1964 ◽  
Vol 3 (1) ◽  
pp. 60-61 ◽  
Author(s):  
Tokumichi Tamai ◽  
Masayoshi Achiwa
Keyword(s):  
Laser Beam ◽  
Ruby Laser

scholarly journals EFFECT OF THE RUBY LASER MICROBEAM ON MITOCHONDRIA OF KB CELLS SUPRAVITALLY STAINED BY PINACYANOL

1969 ◽  
Vol 41 (2) ◽  
pp. 424-430 ◽  
Author(s):  
Yasukazu Tanaka
Keyword(s):  
Laser Beam ◽  
Ruby Laser ◽  
Focal Length ◽  
Direct Interaction ◽  
Experimental System ◽  
Spot Size ◽  
Kb Cells ◽  
Focal Spot Size ◽  
Laser Microbeam ◽  
Opaque Material

With pinacyanol as the supravital stain, a preferential effect on mitochondria of KB cells was achieved by the irradiation with the ruby laser beam. The observation confirmed the results of other workers using janus green B in the same experimental system. The preferential effect on mitochondria was noted in the area extending 8–10 µ beyond the nonpreferential damage of 4–5 µ in diameter. The opaque material associated with mitochondria possibly represented coagulated protein. The effect involved cristae mitochondriales without severe disarrangement of their structure. The opaque material could be interpreted as the result of direct interaction between mitochondria and the laser beam, even though the mitochondria were noted outside of the previously estimated focal spot size of about 3 µ Within the thickness of 2–4 µ of monolayered cells, larger areas of damage can be accounted for by divergence of the beam which is focused by a microscope objective of very short focal length. A threshold of biologic effectiveness is probably also involved.

Evidence for a Thermonuclear Reaction in aθ-Pinch Plasma from the Scattering of a Ruby Laser Beam

1967 ◽  
Vol 19 (12) ◽  
pp. 688-689 ◽  
Author(s):  
S. A. Ramsden ◽  
P. K. John ◽  
B. Kronast ◽  
R. Benesch
Keyword(s):  
Laser Beam ◽  
Ruby Laser ◽  
Thermonuclear Reaction ◽  
Pinch Plasma

Spatial coherence of a ruby laser beam by interferometry

1978 ◽  
Vol 17 (21) ◽  
pp. 3500 ◽  
Author(s):  
H. Madjidi-Zolbanine
Keyword(s):  
Laser Beam ◽  
Ruby Laser ◽  
Spatial Coherence

Radiation Scattered from the Plasma Produced by a Focused Ruby Laser Beam

1964 ◽  
Vol 13 (7) ◽  
pp. 227-229 ◽  
Author(s):  
S. A. Ramsden ◽  
W. E. R. Davies
Keyword(s):  
Laser Beam ◽  
Ruby Laser
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