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  • 1
    Electronic Resource
    Electronic Resource
    Diffusion of Polymers Along a Fluid-Fluid Interface (1975)
    s.l. : American Chemical Society
    Macromolecules 8 (1975), S. 680-684 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma60047a022
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  • 2
    Electronic Resource
    Electronic Resource
    Quantitative analysis of biopolymers by matrix-assisted laser desorption (1993)
    s.l. : American Chemical Society
    Analytical chemistry 65 (1993), S. 2164-2166 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00063a041
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  • 3
    Electronic Resource
    Electronic Resource
    Stability of colloidal clusters in shear flow near a wall: Stokesian dynamics simulation studies (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 5319-5330 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: An earlier algorithm for Stokesian dynamics simulation of colloid particles in a fluid bounded by a hard wall is extended to the case when a linear shear flow is applied. The algorithm includes many-body hydrodynamic interactions arising from the shear flow with lubrication corrections for pairs of close particles. The extended algorithm is used to simulate small clusters of particles which may interact with each other and with the bounding wall through model potentials with repulsive cores and attractive tails. The pair problem is studied first, in bounded and unbounded fluid, both with and without pair and wall interactions. The critical shear rate necessary to break a bound pair is determined for a range of initial configurations. Whereas in unbounded fluid a bound pair rotates with the vorticity of the shear flow, near a wall the hydrodynamic forces introduce a new breakup mechanism in which the pair tilts through a finite angle relative to the wall before separating. This tilt mechanism requires significantly stronger shear fields than are needed to separate a pair in unbounded fluid. Linear arrays of particles as well as examples of 2- and 3-D bound clusters are studied next to show how the wall and the tilt mechanism modify the shear-induced breakup. With a wall potential included, significant changes are seen in the final distribution of particles resulting from cluster breakup. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1385559
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  • 4
    Electronic Resource
    Electronic Resource
    Nonlinear relaxation of polarization and optical susceptibility of dielectric particles under sudden change of external field direction (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 7424-7433 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A dilute suspension of particles with permanent electric dipole moment and additional polarizability is subject to an applied electric field which suddenly changes its magnitude and direction. The time dependent behavior of the polarization and of the optical susceptibility is described by solving the Smoluchowski equation for the orientational distribution function. Because of the change of field direction the problem is not axially symmetric but by the proper choice of coordinate system the dynamical equations can be treated in the same manner as in the case of simple field switching on or field reversal. The two independent components of polarization and the nonvanishing elements of the optical susceptibility tensor are shown to be superpositions of exponentially decaying functions of time. A fast numerical method is used to calculate the spectrum of decay rates and the amplitudes of the decaying modes. The time dependence of the difference of principal indices of refraction which produces birefringence is calculated from the difference of characteristic values of the susceptibility tensor. The relaxation behavior of polar particles with additional polarizability is compared with that of simpler polar particles. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1465395
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of hydrodynamic interactions on the irreversible deposition of colloidal particles: Deposition algorithm and simulations (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 112 (2000), S. 11080-11094 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A Stokesian dynamics constraint algorithm for the irreversible deposition of colloidal particles onto a surface is presented. This algorithm can also be used to simulate a variety of nondeposition phenomena and with any method for computing the hydrodynamic interactions among the particles. In particular, a multipole scheme we recently described for computing the mobility matrix of colloidal particles, with or without the presence of a wall, is used here in conjunction with the new deposition algorithm to perform Stokesian dynamics irreversible deposition simulations on a group of 75 colloidal particles. Deposition simulations are performed with and without the hydrodynamic effect of the wall (substrate) being included in the mobility matrix. The results of the simulations lead to important qualitative conclusions on the effect of hydrodynamic interactions on the deposition process, in particular the hydrodynamic effect of the wall. In addition, the simulations serve to illustrate the performance of the new deposition algorithm. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.481760
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  • 6
    Electronic Resource
    Electronic Resource
    Photoabsorption of Kr+2 in the ultraviolet: Revisited (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 4329-4333 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The photoabsorption spectrum of the Kr+2 ground electronic state (X 2Σ+u) has been measured in the ultraviolet (257–355 nm) by a fluorescence suppression technique. Peak absorption is recorded at ∼330 nm and the spectral width of the observed continuum is ∼60 nm (FWHM) which is ∼25% smaller than the value predicted by theory for a Kr+2(X) vibrational distribution thermalized at 300 K. Similar experiments with Ar/Kr mixtures: (1) reveal weak absorption attributed to ArKr+ peaking at ∼280 nm, and (2) suggest that the ArKr+ ion is rapidly converted to Kr+2 by a displacement reaction. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469481
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  • 7
    Electronic Resource
    Electronic Resource
    Diffusion Creep in Polycrystalline Magnesium (1965)
    [s.l.] : Nature Publishing Group
    Nature 207 (1965), S. 70-70 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An equation for the contribution to diffusion creep by grain boundary self-diffusion (coefficient Dgi〉) has been suggested by Coble3: Dgb (2) where B2 is a constant, ~ 150; and w is the grain boundary width. As equation (2) has a stronger grain size dependence than equation (1) and the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/207070a0
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  • 8
    Electronic Resource
    Electronic Resource
    Chlamydial Infections (1988)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Medicine 39 (1988), S. 357-370 
    Details
    ISSN: 0066-4219
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.me.39.020188.002041
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  • 9
    Electronic Resource
    Electronic Resource
    Statistical theory of time-dependent diffusion-controlled reactions in fluids and solids (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 103 (1995), S. 10201-10213 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A new theory of the time-dependence of diffusion-controlled reactions in fluids and solids near thermal equilibrium is presented. Quite general reaction schemes can be handled, but the treatment is limited to the case of particle-conserving unimolecular and bimolecular reactions. Mori's projection operator formalism, as applied to a general master equation with detailed balance, and Ursell's cluster expansion are used as tools. The theory is applied to the time-dependence of fluorescence in a simple model without hydrodynamic or potential interactions. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469923
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  • 10
    Electronic Resource
    Electronic Resource
    Discharge-excited free jet source of rare gas-halide and oxide molecules (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 1674-1682 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Intense rare gas-halide and rare gas-oxide excimer emission has been observed by coupling a pulsed electric discharge to a supersonic free jet expansion. A simple modification in the placement of the discharge anode drastically reduces the number of energetic electrons in the supersonic expansion region and permits large peak excimer populations to be produced by harpoon collisions involving rare gas metastables. The expansion velocity has been determined by spatially resolved spontaneous emission and laser-induced fluorescence measurements. Strong emission spectra from XeF, XeCl, KrF, KrCl, ArF, and the 2 3Π ion pair state of XeO have been recorded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351197
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