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  • Articles  (11)
  • 68.35  (11)
  • Springer  (11)
  • American Meteorological Society
  • Elsevier
  • 1995-1999  (6)
  • 1990-1994  (5)
  • 1955-1959
  • 1950-1954
  • 1995  (6)
  • 1990  (5)
  • 1969
  • 1953
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  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (11)
  • Architecture, Civil Engineering, Surveying
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  • Articles  (11)
Source
Keywords
Publisher
  • Springer  (11)
  • American Meteorological Society
  • Elsevier
Years
  • 1995-1999  (6)
  • 1990-1994  (5)
  • 1955-1959
  • 1950-1954
Year
Topic
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (11)
  • Architecture, Civil Engineering, Surveying
  • Physics  (11)
  • 1
    Electronic Resource
    Electronic Resource
    Field-ion imaging of a tungsten supertip (1995)
    Springer
    Applied physics 61 (1995), S. 99-100 
    Details
    ISSN: 1432-0630
    Keywords: 61.16 ; 68.35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract For the first time, a supertip on a〈111〉W base tip has been self-imaged by field-ion microscopy with atomic resolution. It is a tiny crystalline protrusion of a few nm in diameter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538219
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  • 2
    Electronic Resource
    Electronic Resource
    Non-destructive evaluation of the mechanical behaviour of TiN-coated steels by laser-induced ultrasonic surface waves (1995)
    Springer
    Applied physics 61 (1995), S. 277-284 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 68.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Measuring the propagation velocity of ultrasonic surface waves has been used to determine the Young's modulus of TiN films on steel. Wide-band surface-wave pulses are generated by a pulsed nitrogen laser and detected by a piezoelectric PVDF-foil transducer. A spectrum of the surface-wave phase velocity is obtained from the Fourier transformation of the surface-wave signals. The TiN films were deposited after different presputtering times with argon ions to vary the adhesion on the steel substrate. The adhesion behaviour of the films was investigated with the scratch tester. A correlation was found between the Young's modulus of the film material and the acoustic emission activity in the scratch test, which has been shown to be a suitable measure for adhesion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538193
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  • 3
    Electronic Resource
    Electronic Resource
    Application of BaF2-B2O3-GeO2-SiO2 glasses to metal-oxide-silicon field-effect transistors (1995)
    Springer
    Applied physics 61 (1995), S. 377-380 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 68.45 ; 85.30
    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 capacitance and voltage characteristics of field effect transistors passivated by BaF2-B2O3-GeO2-SiO2 glasses with various water contents were investigated. As the OH absorption coefficients of the glass increased, adverse effects on the recovery of hysteresisC-V curve shifts was seen. The water content is related to the fluoride content of the BaF2−B2O3−GeO2−SiO2 glass. The viscous flow point of the glass was lowered with increasing ionic character obtained from Hannay's equation. The source-drain current and voltage (I-V) characteristics of typical enhancement and depletion mode field effect transistors passivated with these glasses were investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01540111
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  • 4
    Electronic Resource
    Electronic Resource
    Multiple internal reflection spectroscopy of bonded silicon wafers (1995)
    Springer
    Applied physics 61 (1995), S. 101-105 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 68.55 ; 78.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Interfaces of bonded hydrophilic and hydrophobic wafer pairs are studied by multiple internal reflection spectroscopy after annealing at 1100°C. Si−Hx and SiO−H stretching modes are still present in bonded hydrophilic wafers. Interfaces of bonded hydrophobic wafers, prepared by joining HF-etched surfaces without defonized water rinsing, are characterized by the dominance of hydrides (SiH, SiH2, SiH3). Their concentration is about 100 times higher than for bonded hydrophilic wafers. Comparison with the ATR-spectra of HF-treated surfaces showed appreciable shifts in the peak positions indicating that Si−H bonds might be involved in the bonding process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538372
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  • 5
    Electronic Resource
    Electronic Resource
    Laser nonlinear-optical probing of silicon/SiO2 interfaces: Surface stress formation and relaxation (1990)
    Springer
    Applied physics 50 (1990), S. 439-443 
    Details
    ISSN: 1432-0630
    Keywords: 42.65 ; 68.35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A nonlinear optical technique based on optical second harmonic generation in reflection is shown to provide information on the surface layer structure of semiconductor crystals, thin films and layered systems. The second harmonic intensity is sensitive to inhomogeneous stress in centrosymmetric materials via spatial selection rules and the appearance of an electric dipole contribution to the second order nonlinear optical susceptibility. The technique is used to monitor mechanical stress relaxation in the SiO2/Si interface during several annealing procedures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323603
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  • 6
    Electronic Resource
    Electronic Resource
    Yttria tetragonal zirconia polycrystalline electrolytes for solid state electrochemical cells (1990)
    Springer
    Applied physics 50 (1990), S. 449-462 
    Details
    ISSN: 1432-0630
    Keywords: 66.30 ; 68.35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Both the grain-boundary and the lattice resistivity in Y-TZP materials is affected by several ceramic processing variables. These include, sintering temperature, sintering time, cooling rate from high temperatures (〉1000°C), post-sinter heat treatments, the level and types of impurities and the spatial distribution of Y2O3 in the starting powders. Because of the inherent large grain-boundary surface area the grain-boundary resistivity in these ceramics is extremely sensitive to the presence and location of glassy impurities. Impedance spectroscopy has been used along with four-probe dc conductivity measurements, scanning and transmission electron microscopy, x-ray photoelectron spectroscopy and x-ray diffraction to understand the grain-boundary and lattice resistivity behaviour in Y-TZP ceramics as a function of various ceramic processing variables.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324567
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  • 7
    Electronic Resource
    Electronic Resource
    Theory of scanning tunneling microscopy (1990)
    Springer
    Applied physics 51 (1990), S. 281-288 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 73.20 ; 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 present theoretical understanding of imaging clean and adsorbate covered metal surfaces in scanning tunneling microscopy is examined with special emphasis on a possible theoretical foundation for the observed unexpectedly large corrugation on close-packed metal surfaces. Several suggestions for explaining these experimental findings are investigated. Resonance tunneling via tip d-orbitals might be a possible mechanism of amplifying small lateral structure of electronic or elastic origin. Two complementary theoretical methods are applied. The first one concentrates on a realistic description of the potential and wave functions of the sample surface whereas the second one attempts to model a more realistic transition metal tip. In the first approach the tip is represented by a Gaussian protrusion on an otherwise planar free-electron metal surface. The sample surface is built from muffin-tin potentials accounting for the atomic structure and the d-electrons. The spatial current distribution near the tip region is obtained by summing the contributions of all scattered waves. The method has been applied to study the current to Al(111) and Pd(100) surfaces. The corrugation obtained is rather small and cannot explain the experimental observations. The second approach studies two transition metal tips consisting of a single tungsten atom adsorbed on a flat W(110) surface and on a group of four other W atoms. The cluster of four W atoms is coupled to a flat W(110) surface by using an embedding method. The basis set on the W atoms includes 6s-, 6p-, and 5d-orbitals. The electronic structure of the tip exhibits a 5 d 2-resonance near the Fermi level. The effects of tip d-orbitals and resonance tunneling on the lateral contrast in STM are analyzed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324308
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  • 8
    Electronic Resource
    Electronic Resource
    Adsorption of oxygen and hydrogen on Pt(111) studied with second-harmonic generation (1995)
    Springer
    Applied physics 60 (1995), S. 209-215 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 82.20 ; 42.65
    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 adsorption of oxygen and hydrogen on a Pt(111) surface has been studied with phase-sensitive Second-Harmonic Generation (SHG) signal detection. The SHG-signal change measured with p-in, p-out polarization during the adsorption of oxygen and hydrogen was found to be different in amplitude and phase for the two adsorbates. At the wavelength used (1064 nm), only a localized interaction between adsorbate and substrate is seen, leading to a linear dependence of the susceptibility on the coverage. Sticking coefficients,sθ, and their coverage dependence were determined. For hydrogen, a linear decrease insθ with coverage was found; the initial sticking coefficient beings 0=0.06 at a temperature ofT=130 K. For oxygen,sθ whows a quadratic decrease with coverage, strongly dependent on temperature, withs 0=0.05 atT=350 K. A method based on these results is proposed, which would allow the determination of adsorbate coverages of coadsorption systems with SHG using phase-sensitive signal detection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538248
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  • 9
    Electronic Resource
    Electronic Resource
    Morphology and orientational disorder of C70 single crystals (1995)
    Springer
    Applied physics 61 (1995), S. 17-21 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 81.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract C70 single crystals, free from solvent contamination, were grown via vapor phase transport technique. The (0001) face of the C70 crystal was imaged with Atomic Force Microscopy (AFM) under ambient atmosphere. Low-resolution images of a freshly prepared crystal revealed well-ordered faceted regions with multiple terraces extending over a region of several hundred square nanometers. The terraced structure in the images indicates that the crystals formed as a layer growth. In the high-resolution images, C70 molecules were resolved in a hexagonal close packed (hcp) structure with an average center-to-center distance of 10.5±0.5 Å. After one month's exposure to the ambient atmosphere, the molecules rearranged into a mixed structure consisting of hcp and face centered cubic (fcc) regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01538204
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  • 10
    Electronic Resource
    Electronic Resource
    Molecular vibration dynamics in molecule-surface interactions (1990)
    Springer
    Applied physics 51 (1990), S. 115-120 
    Details
    ISSN: 1432-0630
    Keywords: 82.20F ; 68.35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A quantum mechanical coupled channels approach to associative or recombinative desorption and scattering of diatomic molecules is described. The formulation is based on the concept of a reaction path and allows prediction of the vibrational excitation of desorbing molecules. We first consider very light molecules such as H2 and D2 desorbing via a Langmuir-Hinshelwood reaction. In a simple model neglecting rotations and substrate vibrations, the dependence of molecular vibrational excitation on incident energy, the curvature of the reaction path and the position and height of the saddle point are discussed. Various experimental results can be described with reasonable parameters. Vibrational excitation in Eley-Rideal reactions and rotational excitations in general are discussed only in a semiquantitative way. For heavier molecules the coupling to substrate vibrations in principle will become more important. Arguments will be presented that for the problem of vibrational excitation in desorption and scattering this coupling may still be neglected approximately. Results for vibrational excitations of CuF desorbing from Cu are in support of this simple point of view.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324273
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  • 11
    Electronic Resource
    Electronic Resource
    Surface cleaning using sputtering (1990)
    Springer
    Applied physics 51 (1990), S. 238-251 
    Details
    ISSN: 1432-0630
    Keywords: 79.20 ; 68.35 ; 81.60 ; 61.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this article sputtering phenomena as related to the removal of contaminant layers from surfaces are reviewed. Basic relations for sputtering of adsorbed layers by ion bombardment and the corresponding cross sections are discussed in the introductory part. The following section presents models for the sputtering of overlayers with the intention of understanding the relevant physical processes and to obtain quantitative estimates. Subsequently, undesirable by-products of ion bombardment, such as surface damage, particle implantation and preferential sputtering are considered. A concise experimental section deals with ion beam and glow discharge techniques applied for surface cleaning as well as with some surface analytical methods (Auger electron spectroscopy, low-energy ion scattering, secondary ion mass spectroscopy) which are useful and necessary to check the obtained cleaning effect. In the final section various examples are given and some conclusions are drawn for the efficiency of surface cleaning by sputtering.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324008
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