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  • 42.60  (13)
  • bioavailability
  • Springer  (16)
  • 1985-1989  (16)
  • 1980-1984
  • 1940-1944
  • 1988  (16)
Collection
Keywords
Publisher
  • Springer  (16)
Years
  • 1985-1989  (16)
  • 1980-1984
  • 1940-1944
Year
  • 1
    Electronic Resource
    Electronic Resource
    Automatic impedance matching and opto-Hertzian effect in RF excited CO2 waveguide lasers (1988)
    Springer
    Applied physics 47 (1988), S. 149-157 
    Details
    ISSN: 1432-0649
    Keywords: 42.55 ; 42.60 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the successful operation of a novel automatic impedance matching technique (AIMing) and observations of the opto-Hertzian effect. The AIMing system is capable of maintaining efficient RF power delivery to a CO2 waveguide laser over a wide range of operating conditions. The opto-Hertzian signal, produced by circulating laser power fluctuations and detected in the RF reflected power, has some interesting properties and may be used for laser frequency stabilisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00684082
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  • 2
    Electronic Resource
    Electronic Resource
    Chemical processing with lasers: Recent developments (1988)
    Springer
    Applied physics 46 (1988), S. 261-270 
    Details
    ISSN: 1432-0649
    Keywords: 42.60 ; 68.20 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Chemical processing of materials with lasers is a new and interdisciplinary field with many already realized and potential applications in different areas of technology. This overview summarizes some recent developments in this rapidly expanding field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692884
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  • 3
    Electronic Resource
    Electronic Resource
    Negative thermal feedback in laser-assisted oxidation of thin Zn films (1988)
    Springer
    Applied physics 47 (1988), S. 313-316 
    Details
    ISSN: 1432-0630
    Keywords: 81.60 ; 82.65 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The processes leading to the control of the lateral dimension of laser-assisted oxidation of Zn films on glass are examined. It is shown that it is determined by negative feedback between temperature and optical absorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615938
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  • 4
    Electronic Resource
    Electronic Resource
    Laser-induced chemical etching of silicon in chlorine atmosphere (1988)
    Springer
    Applied physics 47 (1988), S. 377-386 
    Details
    ISSN: 1432-0630
    Keywords: 81.60 ; 82.65 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Laser-induced chemical etching of (100) Si in Cl2 atmosphere has been investigated using a combined laser-beam irradiation scheme. 308 nm XeCl excimer laser radiation at parallel incidence has been used to exclusively generate Cl atoms in the gas phase above the Si surface. Additionally, 647.1 nm Kr+ laser radiation at perpendicular incidence has been used to exclusively generate photocarriers within the Si surface. The Cl atom concentration was determined — independently — from both the observed chemiluminescence following the Cl-Cl atom recombination, and from numerical calculations. The etch rateW observed on the Si surface was found to be directly proportional to the Cl atom concentration in the gas phase, and it increases sublinearly with the Kr+ laser powerP according toW∞P 0.7.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615502
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  • 5
    Electronic Resource
    Electronic Resource
    Laser-induced chemical etching of silicon in chlorine atmosphere (1988)
    Springer
    Applied physics 45 (1988), S. 293-299 
    Details
    ISSN: 1432-0630
    Keywords: 81.60 ; 82.65 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Laser-induced chemical etching of single-crystalline (100) Si in Cl2 atmosphere has been investigated for continuous Ar+ and Kr+ laser irradiation at around 351 nm, and at 457.9, 488.0, 514.5, and 647.1 nm. For laser irradiances below 105 W/cm2 the etching mechanism is non-thermal, and is based on photo-generated electron-hole pairs within the Si surface and Cl atoms produced within the gas phase. The experimental results are compared with model calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617934
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  • 6
    Electronic Resource
    Electronic Resource
    Direct laser writing of superconducting patterns into semiconducting ceramic Y-Ba-Cu-O (1988)
    Springer
    Applied physics 46 (1988), S. 331-334 
    Details
    ISSN: 1432-0630
    Keywords: 74.70V ; 42.60 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Investigations on the laser-induced oxidation of YBa2Cu3O6 are presented. Here, the oxygen content of the material is locally increased by laser-induced heating under cw Ar+ or Kr+ laser irradiation in 02 atmosphere. The technique permits direct-writing of superconducting patterns into the semiconducting sample surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01210354
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  • 7
    Electronic Resource
    Electronic Resource
    Searching for optimum conditions in the laser writing of small ohmic contacts (1988)
    Springer
    Applied physics 46 (1988), S. 285-290 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 81.10 ; 85.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Microscopic ohmic contacts are made by laser chemical vapor deposition of platinum on a Pyrex substrate. The electrical conductivity of the deposited metal stripes is measured as a function of the laser power, the writing speed, and the organometallic vapor pressure. The latter appears to be the key parameter for producing contacts with low resistance at high writing speeds. Even on these transparent substrates there is no apparent advantage in using light at 350 nm, where photolysis may in principle play a significant role, over using visible light where photolysis is not effective.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01141594
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  • 8
    Electronic Resource
    Electronic Resource
    Direct laser writing of superconducting patterns into semiconducting ceramic Y-Ba-Cu-O (1988)
    Springer
    Applied physics 46 (1988), S. 331-334 
    Details
    ISSN: 1432-0630
    Keywords: 74.70V ; 42.60 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Investigations on the laser-induced oxidation of YBa2Cu3O6 are presented. Here, the oxygen content of the material is locally increased by laser-induced heating under cw Ar+ or Kr+ laser irradiation in O2 atmosphere. The technique permits direct-writing of superconducting patterns into the semiconducting sample surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01141600
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  • 9
    Electronic Resource
    Electronic Resource
    Laser-induced surface reduction of the high-T c superconductor YBa2Cu3O7−x (1988)
    Springer
    Applied physics 45 (1988), S. 313-316 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 74 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The first investigations on the laser-induced reduction of YBa2Cu3O7−x are presented. Here, the oxygen content of the material is diminished by local heating under cw Kr+ laser irradiation in H2 atmosphere. The technique permits the superconducting properties of the material to be locally changed or destroyed. Laser-induced surface metallization may be useful for the electroding of such materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617937
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  • 10
    Electronic Resource
    Electronic Resource
    Gas phase versus surface contributions to photolytic laser chemical vapor deposition rates (1988)
    Springer
    Applied physics 45 (1988), S. 337-343 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 81.10 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The rate of cwphotolytic laser chemical vapor deposition (LCVD) of platinum is measured for λ≈350 nm as a function of the light intensity and the metalorganic vapor pressure. The growth of the metal films is studied in situ and in real time by monitoring their optical transmission. At low intensities the transmitted light decreases monotonically with time, and the LCVD process is photolytic with its rate limiting step in the surface adlayer. At higher intensities we observe two distinct time domains: Relatively slow initial photolytic deposition with its rate limiting step in the gas phase, which is followed by much faster pyrolytic LCVD. An improved method for distinguishing between adlayer and gas-phase limiting processes is demonstrated. These observations are confirmed by studying the photolytic deposition rates while varying the thickness of the adlayer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617940
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