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  • 1
    Digitale Medien
    Digitale Medien
    Reliability assessment for development of microtechnologies (1997)
    Springer
    Microsystem technologies 3 (1997), S. 145-154 
    Details
    ISSN: 1432-1858
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Technik allgemein
    Notizen: Abstract  In recent years, developments in the micro electronics industry have focused on semiconductors and semiconductor processes. However, microcircuit assembly technologies have lagged chip development. This has spurred research in interconnection and packaging creating many new technologies and enhancing integration. These new microelectronic technologies are enabling micro systems, and resulting in products, from portable work stations to advanced automotive electronics. This evolution of technology has also created the need to reexamine how we achieve a reliable system. Clearly, in highly competitive marketplaces, reliability is a key element in achieving successful products. To achieve a reliable product in a cost effective manner, “upstream problem solving” must be employed which focuses on root cause of failure. This paper provides an overview of the reliability assessment process needed to achieve effective microsystem development. A case study of reliability in a complex multi-chip module is presented which includes an assessment of the stochastic nature of via fatigue by applying Monte Carlo simulations.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s005420050072
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  • 2
    Digitale Medien
    Digitale Medien
    Kinetics of the Oxidation and Nitridation of Silicon at High Temperatures (1958)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 62 (1958), S. 1064-1067 
    Details
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/j150567a010
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  • 3
    Digitale Medien
    Digitale Medien
    Chemical Effects of Nuclear Transformations in the Gas Phase (1958)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 62 (1958), S. 1351-1355 
    Details
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/j150569a003
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  • 4
    Digitale Medien
    Digitale Medien
    Natural buffer layer in DyBa2Cu3O7−x films grown on Si by molecular beam epitaxy (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5697-5699 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Growth of a natural buffer layer has been observed for DyBa2Cu3O7−x films grown on Si substrates. The best DyBa2Cu3O7−x film, grown by molecular beam epitaxy with ozone as a source of activated oxygen, was 2300-A(ring) thick, highly c-axis oriented, and had a resistive-transition onset at 90 K and zero resistance by 70 K. The natural buffer layer, which grew at the interface of the DyBa2Cu3O7−x film and the Si substrate, consisted of Si, Ba, and O. Transmission electron microscopy on this film revealed a 150-A(ring) amorphous layer, whereas Auger electron spectroscopy depth profiling showed 400 A(ring) of chemical interdiffusion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.350189
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  • 5
    Digitale Medien
    Digitale Medien
    The stability of cylindrical voids and of cylinders subject to closure by viscous flow or evaporation/condensation (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 2968-2972 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The stability of a cylindrical pore in an infinite medium, or of an infinite cylinder, when surface energy is significant is considered. The growth of small sinusoidal perturbations by viscous flow (creeping flow) or by evaporation/condensation are examined. The principal results are the dependence of perturbation growth rate on perturbation wavelength. For the creeping flow case no maximum in perturbation growth rate appears. The results are compared with those of Lord Rayleigh [Philos. Mag. 34-207, 145 (1892)] and of Nichols and Mullins [Trans. AIME 233, 1840 (1965)].
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.349323
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  • 6
    Digitale Medien
    Digitale Medien
    Magneto-optics of excitons in a center Si δ-doped GaAs/AlGaAs quantum well (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 8502-8505 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Observation of magneto-optical transitions in a Si center δ-doped quantum well is reported. The excitons are stabilized by the application of the field. With photoluminescence excitation spectroscopy (PLE), transitions below the Fermi level are observed. At magnetic fields (approximately-greater-than)8 T broadened Landau levels can be seen. The features in the PLE spectra sharpen up significantly when the Larmor diameter becomes less than the average interimpurity spacing. The effect of the ionized donors in the well on the optical spectra is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.353402
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  • 7
    Digitale Medien
    Digitale Medien
    Kinetic phase diagrams for the monomer–dimer surface reaction: Unification of mean-field and lattice–gas behavior (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 572-577 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We provide a unified discussion of kinetic phase transitions for mean-field and lattice–gas treatments of the monomer–dimer surface reaction. For high surface mobilities, kinetics is typically well described by mean-field rate equations. These reveal bistability over a range of monomer adsorption rates which diminishes with increasing nonreactive monomer desorption rate d, and vanishes at some critical d=dc. Relative stability in the bistable region is determined from the behavior of chemical waves corresponding to the displacement of one stable state by the other. Their evolution is determined via appropriate reaction–diffusion equations. Conventional diffusion terms are modified here to reflect the influence of the presence of one species on diffusion of the other. We determine equistability (i.e., discontinuous transition) points for d≤dc, and thus construct a kinetic phase diagram including a spinodal line. For lower surface mobilities, analysis of lattice–gas models reveals qualitatively analogous behavior. The key difference is that for lower mobilities, spontaneous fluctuations are effective in automatically selecting the most stable state, i.e., in reducing metastability, and thus producing discontinuous transitions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.463552
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  • 8
    Digitale Medien
    Digitale Medien
    Cluster diffusivity: Structure, correlation, and scaling (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 9018-9025 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We have investigated the diffusion of clusters on a triangular lattice using Monte Carlo simulations. A cluster is defined as a two-dimensional collection of particles which are connected to each other, either directly or indirectly through other particles in the cluster, by nearest-neighbor bonds. Each particle is allowed to hop, with probability αδb/2/(α−δb/2+αδb/2), to a vacant nearest-neighbor site with the constraint that the hop does not break the cluster. The change in the number of bonds is given by δb. The equilibrium clusters are correlated animals with structure controlled by the parameter α. We show that the diffusion coefficient of a cluster can be decomposed into two factors. One is a measure of the weighted length of the "active'' perimeter and the other is a measure of the correlation between pairs of steps taken by the cluster during its walk. The perimeter measure is asymptotically proportional to cluster size N, as anticipated for ramified animals, but it crosses over to N1/2 dependence for smaller compact clusters with α〉1. Our focus is on the accurate determination of the size and structure dependence of the correlation factor, which is more sensitive to statistical fluctuations. As a result, we describe the scaling of the cluster diffusion coefficient with cluster size.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.459708
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  • 9
    Digitale Medien
    Digitale Medien
    Inequivalent models of irreversible dimer filling: "Transition state'' dependence (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 8397-8398 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: Irreversible adsorption of diatomics on crystalline surfaces is sometimes modeled as random dimer filling of adjacent pairs of sites on a lattice. We note that this process can be implemented in two distinct ways: (i) randomly pick adjacent pairs of sites, jj', and fill jj' only if both are empty (horizontal transition state); or (ii) randomly pick a single site, j, and if j and at least one neighbor are empty, then fill j and a randomly chosen empty neighbor (vertical transition state). Here it is instructive to consider processes which also include competitive random monomer filling of single sites. We find that although saturation (partial) coverages differ little between the models for pure dimer filling, there is a significant difference for comparable monomer and dimer filling rates. We present exact results for saturation coverage behavior for a linear lattice, and estimates for a square lattice. Ramifications for simple models of CO oxidation on surfaces are indicated.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.459273
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  • 10
    Digitale Medien
    Digitale Medien
    Modeling spatiotemporal behavior of the NO+CO reaction on Pt (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 96 (1992), S. 4805-4807 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: Various features of NO+CO reaction kinetics on Pt(100) surfaces, including temporal oscillations, are well described by a three-variable model incorporating only the CO, NO, and O coverages. Here we analyze the corresponding reaction–diffusion equations demonstrating the existence of chemical waves where an "oscillating phase'' displaces an unreactive NO/CO phase leaving a spatially periodic structure in its wake; pulses excited via inhomogeneities from an unreactive NO/CO background; and Turing structures for sufficiently unequal NO and CO diffusion rates.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.462767
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