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  • Articles  (25)
  • 1990-1994
  • 1985-1989  (25)
  • 1955-1959
  • 1989  (11)
  • 1985  (14)
  • Physics  (25)
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  • Articles  (25)
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  • 1990-1994
  • 1985-1989  (25)
  • 1955-1959
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  • 1
    Electronic Resource
    Electronic Resource
    Control of the Schottky barrier using an ultrathin interface metal layer (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 268-270 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fermi level movements at Pt/GaAs and Ti/GaAs interfaces have been investigated using a direct measurement of Schottky barrier heights in a bimetal Schottky structure. Using thin interfacial layers, the Schottky barrier was smoothly varied from the characteristic value of the thick metal to that of the interfacial metal. The variation of barrier height versus the inner metal thickness was found to exhibit an exponential behavior extending over a few monolayers coverage. This experiment indicates a new approach to the fundamental study of metal-semiconductor interfaces and could be useful in device applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100986
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  • 2
    Electronic Resource
    Electronic Resource
    Exposure instrumentation for the application of x-ray lithography using synchrotron radiation : INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2140-2143 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This paper reviews the recent progress in the development of exposure equipment for x-ray lithography consisting of compact synchrotron radiation source, beamline, and x-ray stepper. This exposure facility is situated door by door to a CMOS-pilot line. The compact storage ring COSY, under assembly in Berlin, is described and calculations are presented, that show that relatively low accumulated current exposure times of some seconds can be expected using a highly sensitive x-ray resist. A simple, inexpensive, and highly reliable beamline has been realized to connect an x-ray stepper and a light source. Several x-ray steppers have been installed for field testing in the nearby lithography laboratory at BESSY, that are equipped with x-ray reflecting mirrors, or a scanning mask and wafer unit for full-field exposure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140803
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  • 3
    Electronic Resource
    Electronic Resource
    Electron density studies of KCl and LiF by γ-ray diffractometry (1985)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 41 (1985), S. 171-175 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Use of hard electromagnetic radiation (λ = 0.12 Å) in diffraction experiments, in conjunction with thin crystals in transmission geometry (Laue case), minimizes multiple scattering, often referred to as the 'extinction problem'. A large crystal slab, completely intercepting the incident beam, was used in this experiment. Several structure factors have been measured in LiF and KCl, with greater accuracy than ever before, using the γ-ray spectrometer of the University of Missouri at Columbia. In the case of LiF the results indicates some compression of the valence electron densities, similar to what has been found earlier for NaF. In the case of KCl all reflections agree well with the values calculated from free-atom Hartree-Fock wave functions except for the 004 and 006, which are appreciably weaker than corresponding reflections with similar or identical sin θ/λ values. This result indicates asphericity of the valence electron density. The 111 is also much weaker than the calculated value, indicating that the negative ions are slightly compressed and the positive ions slightly expanded with respect to the free-ion charge densities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767385000344
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  • 4
    Electronic Resource
    Electronic Resource
    Insulator Investigations in MIS Structures with Constant-Capacitance-DLTS Technique (1989)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 6-7 (Jan. 1989), p. 471-476 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/25/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.6-7.471.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Dynamics of a subconstituent picture of weak interactions (1985)
    Springer
    The European physical journal 26 (1985), S. 569-580 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We use sum rules in order to discuss the dynamics of the simplest subconstituent model of weak interactions with elementary spin 1/2 fermions and scalar bosons. Vacuum condensates of the scalars play an essential role and lead to features quite different from QCD. With a certain vacuum structure vector dominance of the composite W-mesons is a good approximation, and we also see a clear signal for massless fermions in the two-point function of composite fermions. Thus such a model is in good agreement with standard phenomenology. Composite Higgs particles are also investigated. The effective interaction is evidently of the gauge type.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01551801
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  • 6
    Electronic Resource
    Electronic Resource
    Loop-corrected string field equations from world-sheet Weyl invariance (1989)
    Springer
    The European physical journal 43 (1989), S. 485-496 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate short distance singularities inside the Polyakov path integral in an arbitrary closed bosonic string background due to vertex operators and small handles or holes. The latter are represented in terms of handle or hole operators, which we construct explicitly. The requirement of global Weyl invariance generates loop-corrected equations of motion for the string modes including tadpole terms and self-energy corrections. The relation to theS-matrix and superstrings are discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01506545
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  • 7
    Electronic Resource
    Electronic Resource
    Radiative corrections and the sliding singlet mechanism for light doublet higgs fields (1985)
    Springer
    The European physical journal 29 (1985), S. 166-166 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01571400
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  • 8
    Electronic Resource
    Electronic Resource
    A grand unified theory based onSU(n, 1)-minimal supergravity (1985)
    Springer
    The European physical journal 29 (1985), S. 209-217 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We discuss a grand unified theory in the framework ofSU(n, 1) minimal supergravity with the Planck mass as the only input mass scale.M W ≈m 3/2 is fixed by radiative corrections to be naturally ≪M P1. Due to the particular form of explicit soft supersymmetry breaking a light singlet can be used to obtain naturally light Higgs doublets and for a new mechanism for radiativeSU (2)×U(1) breaking. The low energy particle spectrum is very restricted withm 3/2≈104 GeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01550819
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  • 9
    Electronic Resource
    Electronic Resource
    Suspension polymerization of vinyl chloride. I. Influence of viscosity of suspension medium on resin properties (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 37 (1989), S. 145-166 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The suspension polymerization of vinyl chloride is studied in a bench-scale reactor adequately reproducing reaction conditions and resin properties of industrial relevance. The evolution of particle morphology is analyzed at different stages of conversion, and a model for particle formation is verified. The influence of viscosity of the suspension medium is analyzed in relation to molecular weight distribution and particle morphology.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1989.070370111
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  • 10
    Electronic Resource
    Electronic Resource
    Continuous reactive processing I: Reactive coating (1985)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 25 (1985), S. 541-547 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The big success of the reaction injection molding (RIM) process has brought about a marked interest in reacting polymer processing. In the present work, we study the technical feasibility of a continuous process to coat metallic conductors using reacting polymers. In the envisioned system, RIM type reactants are mixed and then injected into a tubular reactor through the center of which we pass the cable to be coated. The predictions of the mathematical model developed show that a feasible process can be designed by adequate control of the heat transfer phenomena. The process needs in general, a low reactor temperature and a high cable temperature.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760250906
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