ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (24)
  • 68.35  (24)
  • Springer  (24)
  • 2015-2019
  • 2010-2014
  • 1990-1994  (24)
  • 1955-1959
  • 1950-1954
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (24)
Collection
  • Articles  (24)
Source
Keywords
Publisher
  • Springer  (24)
Years
Year
Topic
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (24)
  • Physics  (26)
  • 1
    Electronic Resource
    Electronic Resource
    Interfacial reaction barriers during thin-film solid-state reactions: The crystallographic origin of kinetic barriers at the NiS2/Si(111) interface (1993)
    Springer
    Applied physics 57 (1993), S. 415-425 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 68.55 ; 82.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Epitaxial NiSi2 islands have been grown on Si(111) substrates by the direct reaction of nickel vapour with the silicon substrate in ultra-high vacuum at 400° C. Growth kinetics was shown to depend on the orientation of the islands: A-oriented islands grow about ten times faster than B-oriented ones, with the ratio of the advance rates of the main growth fronts even reaching 30. Applying plan-view transmission electron microscopy and high-resolution electron microscopy of cross sections, a corresponding difference was found in the structure of the NiSi2/Si(111) growth front: Steps at the B-oriented growth front were of three or six interplanar (111) spacings in height, whereas at the A-oriented growth front step-like defects of less than one interplanar (111) spacing in height were observed. These observations are explained by an atomic-scale model of the solid-state reaction, which involves the diffusion of nickel to the interfaces and the nucleation and subsequent lateral propagation of interfacial steps. The difference in the reaction kinetics originates from the presence of kinetic reaction barriers at the NiSi2/Si(111) growth fronts, the barrier at the B-front being higher owing to the lower formation rate of steps of triple atomic height than that of steps of lower height at the A-NiSi2/Si(111) growth front.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331780
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Ion-beam-induced atomic transport and phase formation in the system nickel/antimony (1993)
    Springer
    Applied physics 57 (1993), S. 469-473 
    Details
    ISSN: 1432-0630
    Keywords: 61.80 ; 68.35 ; 68.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Nickel-antimony intermetallic compounds of different stoichiometries were studied by means of perturbed angular correlation (PAC) spectroscopy. The hyperfine interaction parameters for 111Cd probes in the crystal lattices of NiSb, Ni5Sb2, Ni3Sb and NiSb2 were determined. The results are discussed in the light of crystallographic data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331787
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Heat “superemission” and nucleation-front propagation under laser-induced crystallization of thin amorphous films (1993)
    Springer
    Applied physics 57 (1993), S. 561-566 
    Details
    ISSN: 1432-0630
    Keywords: 61.70 ; 68.35 ; 81.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The laser-induced solid-state explosive nucleation in amorphous media is studied analytically. The shapes of the temperature switching wave and that of the nucleation front as well as the formula for the front velocity are derived considering also self-consistent medium deformation. Two conditions of explosive nucleation reflecting the roles of latent heat emission and of deformation are formulated. It is shown that, in explosive nucleation, the rate of internal heat emission is proportional to the square of the latent crystallization heat (“superemission”) in analogy to photon superradiance in initially inverted two-level atomic systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331759
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    The formation of intermetallic phases by solid-phase reaction of Fe/Al multilayers (1993)
    Springer
    Applied physics 56 (1993), S. 113-118 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 64.00 ; 73.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Thin film multilayers of Fe and Al with thicknesses ranging from 10 nm/2 nm to 10 nm/420 nm Fe/Al are used as starting structures to produce intermetallic phases by solid-phase reaction during high-vacuum thermal annealings. By measuring the relative concentrations of the reacting Fe and Al species nearby the growing interfaces and using the recently introduced concept of effective heat of mixing of binary thin-film metallic systems, a method is suggested to predict the phases to be obtained from different combinations of initial multilayer thickness and annealing temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00517676
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Treatment of roughness and concentration gradients in total Reflection X-ray fluorescence analysis of surfaces (1992)
    Springer
    Applied physics 54 (1992), S. 460-465 
    Details
    ISSN: 1432-0630
    Keywords: 07.85 ; 68.35 ; 81.60 ; 82.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Total Reflection X-ray fluorescence (TXRF) spectrometry, a new technique for surface and layer analysis, was originally confined to ideal smooth interfaces. In practice, however, one has to cope with more or less rough surfaces. Therefore, modelling calculations have been conducted to consider the consequences of residual roughness on the fluorescence signal at grazing incidence. The model used was verified experimentally on surfaces which exhibit peak-to-valley roughnesses ranging from 5 to 4000 nm. In addition, concentration changes occurring in the zone of roughness in the surface layer of a high grade steel after exposure to nitric acid were determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324172
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Structure formation in UV-laser-ablated polyimide foils (1992)
    Springer
    Applied physics 55 (1992), S. 119-120 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 61.40 ; 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 The formation of nap-type and wall-type structures on laser-irradiated polyimide (PI) films is reported for the first time. These investigations demonstrate that such structures can develop on non-melting polymer surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324612
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Ion-beam-induced atomic transport and phase formation in the system nickel/antimony (1993)
    Springer
    Applied physics 57 (1993), S. 353-361 
    Details
    ISSN: 1432-0630
    Keywords: 61.80 ; 68.35 ; 68.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Sb/Ni multilayers of 200 nm total thickness were ion-beam mixed with 900 keV Xe++ or 600 keV Ar++ ions using fluences up to 1016 ions/cm2. The formation of crystalline intermetallic phases was observed by X-ray diffraction (XRD). To investigate, on a microscopic scale, the mixing-effects the perturbed angular correlation (PAC) technique was applied using some 1012 implanted radioactive 111In ions. The different phases were identified in the PAC spectra by comparison with those taken for single-phase material of intermetallic Ni/Sb compounds and pure Ni and Sb. After the 111In implantation usually up to 50% of the probes are found with PAC-parameters typical for the single metallic layers. The rest of the probes showed a complex mixture of electric field gradients (EFG). During ion-beam mixing this fraction increased to 100%. In some experiments individual EFGs were resolved indicating the formation of crystalline NiSb and Ni5Sb2 intermetallic phases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332289
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 11
    Electronic Resource
    Electronic Resource
    Ion scattering spectroscopy and scanning tunneling microscopy: A powerful combination for surface structure analysis (1991)
    Springer
    Applied physics 53 (1991), S. 388-402 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 61.16 ; 61.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Low-energy ion backscattering and scanning tunneling microscopy (STM) have been used in combination to get better insight into the field of surface crystallography. The synergic effectiveness resulting from the complementing character of the two methods has been exemplified at clean NiAl(111) and for oxygen and nitrogen adsorption on Cu(110). The position of the atom cores is accessible by the low-energy noble gas impact collision ion scattering spectroscopy with neutral detection (NICISS). As a technique averaging over a macroscopic area of the sample, NICISS is better suited to supply information on features of completely developed phases, either on clean or adsorbate saturated surfaces. Additional information, on the other hand, can be gained by scanning tunneling microscopy (STM), which as a powerful local probe may be used to image surfaces with atomic resolution and to monitor defects, steps and the growth kinetics of e.g. adsorption-induced phase changes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348151
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Calculated surface energies of the 4d transition metals: A study of bond-cutting models (1992)
    Springer
    Applied physics 55 (1992), S. 442-448 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 73.20
    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 surface energies of the low-index surfaces of the 4d transition metals were calculated using density-functional theory and the full-potential linear muffin-tin orbital method. The results are discussed in the context of bound-cutting models. It is found that the usual approach, which ignores the decrease of the bond strength with increasing coordination number, is incompatible with the calculated results. The coordination number — bond strength relation was calculated explicitly for several metals, showing that the bond strength decreases roughly as the reciprocal of the square-root of the coordination number. A modified model which takes this into account correctly describes the magnitude and the surface depencence of the calculated surface energies. In addition, we discuss the previously ignored role of the free-atom orbital structure in bond-cutting models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348331
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    Ion-beam-induced atomic transport and phase formation in the system nickel/antimony (1993)
    Springer
    Applied physics 57 (1993), S. 343-351 
    Details
    ISSN: 1432-0630
    Keywords: 61.80 ; 68.35 ; 68.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We report on the ion-beam mixing processes of Sb/Ni marker layers and bilayers under the irradiation of ions ranging from He to Pb, at 80 K and at room temperature. The concentration profiles are obtained by Rutherford backscattering spectroscopy with 900 keV α-particles. At 80 K, the bilayer mixing rates cannot be reproduced by purely ballistic mixing; the essentially linear scaling of the bilayer mixing rate with the energy F D deposited at the interface points to local spike formation. A transition to global spike formation seems to be visible for the Pb-irradiations. Additional mixing effects at 300 K are due to radiation enhanced diffusion and scale with √F D. The marker mixing rates at 80 K are reproduced by the ballistic mixing approach, but are equally well described by local spike models. High fluence Xe-irradiations of Sb/Ni bilayers lead to intermetallic phases in the interface region as verified by transmission electron microscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332288
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    The influence of surface reconstruction on the kinetics of adsorption-desorption processes: A Monte Carlo study of a simple model (1993)
    Springer
    Applied physics 56 (1993), S. 73-80 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 82.20 ; 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 influence of surface reconstruction on the kinetics of adsorption-desorption processes is studied through a simple two-position model by means of Monte Carlo simulation. Effects due to constraints on the translational motion of activated complexes and to heterogeneity are particularly investigated. Heterogeneity emerges as the most important factor to explain the huge variation of the preexponential Arrhenius parameter with coverage observed in the H/W(001) system. In the present model it is conjectured that heterogeneity originates from additional interactions of H with surface or sub-surface W atoms when hydrogen is adsorbed on sites where surface W atoms are farther apart due to reconstruction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00351906
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 16
    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
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 17
    Electronic Resource
    Electronic Resource
    Total reflection X-ray fluorescence spectrometry for quantitative surface and layer analysis (1991)
    Springer
    Applied physics 53 (1991), S. 449-456 
    Details
    ISSN: 1432-0630
    Keywords: 07.85 ; 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 Measurements of X-ray fluorescence spectra versus grazing incident angles provide information on elemental composition as well as density and thickness of near surface layers. Calculations of fluorescence intensities are presented, which are used for the evaluation of data obtained by total reflection X-ray fluorescence (TXRF) spectrometry. The calculation is based on a matrix formalism to account for standing wave phenomena due to transmission and reflection in layered material. For the determination of concentrations the model makes additional use of the fundamental parameter technique in order to include absorption and enhancement effects of the fluorescence radiation. On the basis of experimental data some capabilities of this nondestructive and contactless probing technique are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348161
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 18
    Electronic Resource
    Electronic Resource
    Structure formation in UV-laser ablated poly-ethylene-terephthalate (PET) (1991)
    Springer
    Applied physics 53 (1991), S. 330-331 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 61.40 ; 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 Structure formation observed in UV-laser ablated poly-ethylene-terephthalate (PET) foils can uniquely be assigned to mechanical and thermal pretreatments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357196
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 19
    Electronic Resource
    Electronic Resource
    Aluminium diffusion in titanium nitride films. Efficiency of TiN barrier layers (1993)
    Springer
    Applied physics 57 (1993), S. 195-197 
    Details
    ISSN: 1432-0630
    Keywords: 66.30 ; 68.35 ; 68.55
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Two kinds of reactively evaporated titanium nitride films with columnar (B 0 films) and fine-grained (B + films) film structures, respectively, have been examined as diffusion barriers for preventing aluminium diffusion. The aluminium diffusion profiles have been investigated by 2 MeV 4He+ Rutherford backscattering spectrometry (RBS) at temperatures up to 550° C. The diffusivity from 300° C to 550° C is: D[m2s−1]=3×10−18 exp[−30/(RT)] in B 0 layers and D[m2s−1]=1.4×10−16 exp[−48/(RT)] in B + TiN layers. The activation-energy values determined indicate a grain boundary diffusion mechanism. The difference between the diffusion values is determined implicitly by the microstructure of the layers. Thus, the porous B 0 layers contain a considerable amount of oxygen absorbed in the intercolumnar voids and distributed throughout the film thickness. As found by AES depth profiling, this oxygen supply allows the formation of Al2O3 during annealing the latter preventing the subsequent diffusion of the aluminium atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331444
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 20
    Electronic Resource
    Electronic Resource
    Surface structure of β-FeSi2(101) epitaxially grown on Si(111) (1993)
    Springer
    Applied physics 57 (1993), S. 477-482 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 68.55
    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 surface morphology and structure of β-FeSi2(101) films epitaxially grown on Si(111) has been studied by means of Scanning Tunneling Microscopy (STM). The films are formed by large crystallites which are single domain. Each crystallite has only one of the three possible azimuthal orientations with respect to the substrate. A large density of planar defects, however, is detected on top of each crystallite. They are assigned to intrinsic stacking faults and their existence seems hard to avoid. This high density of intrinsic defects casts serious doubts on the use of β-FeSi2 as an optoelectronic material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331745
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 21
    Electronic Resource
    Electronic Resource
    The formation of subsurface oxygen on Pt(100) (1993)
    Springer
    Applied physics 57 (1993), S. 507-511 
    Details
    ISSN: 1432-0630
    Keywords: 68.35 ; 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 PhotoEmission Electron Microscopy (PEEM) enables imaging a surface via its work function. If a CO covered Pt(100) surface is exposed to oxygen patches are formed which appear dark in the PEEM image due to their high work function. As the surface is heated to temperatures above 650 K we observe the conversion of these dark islands into very bright ones with work functions much lower than even that of the clean surface. These findings are attributed to a change in the dipole moment of the adsorbed oxygen induced by their migration beneath the surface. A total work-function decrease of up to 1.2 eV has been evaluated independently using a Scanning Photoemission Microscope (SPM). The properties of this new kind of oxygen were also further investigated with thermal desorption spectroscopy and with Auger-electron spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331749
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 22
    Electronic Resource
    Electronic Resource
    Sum-frequency spectroscopy of physisorbed and chemisorbed molecules at liquid and solid surfaces using band-width-limited picosecond pulses (1994)
    Springer
    Applied physics 59 (1994), S. 605-610 
    Details
    ISSN: 1432-0630
    Keywords: 68.10 ; 68.15 ; 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 We studied the vibrational Sum-Frequency (SF) spectra of long chain fatty alcohols and amines physisorbed at liquid/air interfaces and of OctadecylTrichlorSilan (OTS) chemisorbed on glass/air interfaces in situ, i. e., in normal laboratory environment. The intense, band-width-limited IR pulses generated by our laser system are tunable from 2600 to 4000 cm−1 with a constant pulse duration of 3 ps and a band width of 5 cm−1 (FWHM) over the entire tuning range, thus covering the CH-, NH-, and OH-stretching regions. Using suitable polarization geometries, information on the molecular orientation is obtained from the amplitudes of the symmetric and degenerate methyl-stretching modes. Opposite phase of adjacent vibrational modes can lead to destructive interference in the SF signal, as analyzed theoretically. This interference effect is observed experimentally for the first time, due to the superior spectral resolution and signal-to-noise ratio of our spectra. Varying the pH value of the aqueous subphase of a Langmuir film formed by octadecylamin, characteristic changes in the CH- and NH-spectral region are observed. For bulk pH≤10 the symmetric CH2 mode appears, which is a strong hint for trans-gauche deformations dependent on pH. In this way, SF spectroscopy is demonstrated to be an independent method for determinining the surface pK of surfactants. Chemisorbed films of OTS have been prepared by polymerization of OTS on a glass substrate in anhydrous solution. Vanishing CH2 resonances indicate straight chains of the adsorbed molecules, whereas from the line strength of residual Si-OH vibrations information on the degree of polymerization may be obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331920
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 23
    Electronic Resource
    Electronic Resource
    Nonlinear interferometry and phase measurements for surface second-harmonic generation in a dispersive geometry (1994)
    Springer
    Applied physics 59 (1994), S. 631-637 
    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 Direct measurement of the phase of the surface nonlinear susceptibility is based on the interference of nonlinear optical signals. Up to now, this has not been possible for Second-Harmonic Generation (SHG) in geometries such as Total Internal Reflection (TIR) due to the refractive dispersion of harmonic and fundamental light created in TIR. We demonstrate two schemes which enable us to overcome this dispersion, leading to interference between two second-harmonic signals generated consecutively by the same laser. The advantages and limitations of the two approaches are discussed. We use this technique to check the theoretical predictions for the nonlinear Fresnel factors for SHG in the TIR geometry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331924
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 24
    Electronic Resource
    Electronic Resource
    Dendritic surface structures on excimer-laser irradiated PET foils (1993)
    Springer
    Applied physics 56 (1993), S. 329-333 
    Details
    ISSN: 1432-0630
    Keywords: 42.60 ; 61.80 ; 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 new kind of surface structure was observed on polyethylene-terephthalate (PET) foils after 248 nm KrF-excimer-laser irradiation in vacuum. The laser fluences employed were around the ablation threshold. The branched fractal structures observed have a lateral dimension in the micrometer range and a heigth of 30 to 60 nm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324351
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...