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  • 1990-1994  (2)
  • 1970-1974
  • 42.55.Rz  (1)
  • 68.45-v  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Plasma-mediated ablation of brain tissue with picosecond laser pulses (1994)
    Springer
    Applied physics 58 (1994), S. 493-499 
    Details
    ISSN: 1432-0649
    Keywords: 87.50.Hj ; 42.55.Rz ; 87.90.+y
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Plasma-mediated ablations of brain tissue have been performed using picosecond laser pulses obtained from a Nd:YLF oscillator/regenerative amplifier system. The laser pulses had a pulse duration of 35 ps at a wavelength of 1.053 µm. The pulse energy varied from 90 µJ to 550 µJ at a repetition rate of 400 Hz. The energy density at the ablation threshold was measured to be 20 J/cm2. Comparisons have been made to 19 ps laser pulses at 1.68 µm and 2.92 µm from an OPG/OPA system and to microsecond pulse trains at 2.94 µm from a free running Er:YAG laser. Light microscopy and scanning electron microscopy were performed to judge the depth and the quality of the ablated cavities. No thermal damage was induced by either of the picosecond laser systems. The Er:YAG laser, on the other hand, showed 20 µm wide lateral damage zones due to the longer pulse durations and the higher pulse energies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081080
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Investigation of self-organizing thiol films by optical second harmonic generation and X-ray photoelectron spectroscopy (1991)
    Springer
    Applied physics 53 (1991), S. 552-556 
    Details
    ISSN: 1432-0630
    Keywords: 68.45-v ; 68.45 Da ; 82.65-i
    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 adsorption of self-organizing thiol films on polycrystalline gold substrates was investigated in situ by optical second harmonic generation. Growth of the films could be detected at submonolayer coverage. For a comparison with classical surface analytical methods the thiol coverage was measured ex situ by X-ray photoelectron spectroscopy. We find that formation of ordered thiol films up to monolayer coverage can be described by Langmuir adsorption kinetics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331545
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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