Zobrazeno 1 - 10 of 16 pro vyhledávání: '"D. H. Van Winkle"'
1
Polar catastrophe and the structure ofKTa1−xNbxO3surfaces: Results from elastic and inelastic helium atom scattering
Autor: Rifat Fatema, Sanford A. Safron, Lynn A. Boatner, T. W. Trelenberg, J. A. Li, F. A. Flaherty, J. G. Skofronick, D. H. Van Winkle
Publikováno v: Physical Review B. 92
The structure and dynamics of cleaved $(001)$ surfaces of potassium tantalates doped with niobium, $\mathrm{KT}{\mathrm{a}}_{1\ensuremath{-}x}\mathrm{N}{\mathrm{b}}_{x}{\mathrm{O}}_{3}$ (KTN), with $x$ ranging from $0%$ to $30%$, were measured by hel
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e3cb6a7ccd6e31c32e751aab20ea64c
https://doi.org/10.1103/physrevb.92.035414
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2
Ultrathin film growth of p-phenylene oligomers on alkali halide substrates
Autor: Sanford A. Safron, J. G. Skofronick, Edward Kintzel, D. H. Van Winkle, Detlef-M. Smilgies
Publikováno v: Journal of Crystal Growth. 289:345-350
Controlled growth of the aromatic p -phenylene oligomer molecules ( p -quaterphenyl, p -quinquephenyl, and p -sexiphenyl) adsorbed onto individual KBr(0 0 1), KCl(0 0 1), NaCl(0 0 1), and NaF(0 0 1) substrates has been investigated by X-ray diffracti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24c828e0046185272f99e8bd6167cc25
https://doi.org/10.1016/j.jcrysgro.2005.11.004
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3
Effect of temperature on the growth of ultrathin films ofp-sexiphenyl on KCl(001)
Autor: Sanford A. Safron, Detlef-M. Smilgies, J. G. Skofronick, Edward Kintzel, D. H. Van Winkle
Publikováno v: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 22:107-110
Ultrathin films of p-sexiphenyl, formed by vapor-deposition onto KCl(001) substrates, have been investigated by x-ray diffraction (XRD) and atomic force microscopy (AFM). Analysis of the XRD data shows that the temperature of the alkali halide substr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ef3dd8cddb187dc4ff1be878efd2b94
https://doi.org/10.1116/1.1631471
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4
Investigation of the morphology of the initial growth of the aromatic moleculep-quaterphenyl on NaCl (001)
Autor: T. W. Trelenberg, Edward Kintzel, D. H. Van Winkle, E. A. Akhadov, Sanford A. Safron, J. G. Skofronick, F. A. Flaherty, Detlef-M. Smilgies
Publikováno v: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 19:1270-1276
Investigations of the structural properties of the initial layers of p-quaterphenyl (p-4P) vapor deposited onto NaCl (001) have been carried out using atomic force microscopy (AFM), grazing incidence x-ray diffraction (GIXRD), and helium atom scatter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4e234cf406f6bb9c72cf8214b7b5f7af
https://doi.org/10.1116/1.1372917
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5
Observation of a Metastable Periodic Structure for the (001) Surface ofKTaO3after CleavingIn Situ
Autor: D. Bonart, D. H. Van Winkle, E. A. Akhadov, Jeff Baker, J. Fritsch, Jaime A. Li, T. W. Trelenberg, F. A. Flaherty, Lynn A. Boatner, Sanford A. Safron, J. G. Skofronick, U. Schröder
Publikováno v: Physical Review Letters. 86:4867-4870
Helium atom diffraction experiments carried out under ultrahigh vacuum conditions on a freshly cleaved (001) surface of ${\mathrm{KTaO}}_{3}$ reveal metastable features which decay over a period of several hours. The initial He diffraction pattern co
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::12ed718040f650bdc3c86df1245ad290
https://doi.org/10.1103/physrevlett.86.4867
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6
Capillary gel electrophoresis of nucleic acids in pluronic F127 copolymer liquid crystals
Autor: Yingjie Liu, D. H. Van Winkle, Randolph L. Rill, B. A. Ramey, Bruce R. Locke
Publikováno v: Chromatographia. 49:S65-S71
The liquid crystalline gel phases of solutions of Pluronic F127, a triblock copolymer, were recently introduced as an alternative to disordered solutions of random coil polymers as replaceable media for capillary gel electrophoresis (CGE). Pluronic F
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1933b08831bc43cdc6171d412e335c7d
https://doi.org/10.1007/bf02468978
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7
Nematic Bubbles in Freely Suspended Liquid Crystal Films
Autor: M. Nechanicky, F. Kettwig, D. H. Van Winkle
Publikováno v: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 304:471-476
Nematic bubbles form in smectic freely suspended liquid crystal films when they are heated well above the bulk smectic to nematic transition temperature. In thin films, nematic droplets form and cause rapid film rupture. In some films, individual lay
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a90c5885d4b6a8d92b3912207bf0fff
https://doi.org/10.1080/10587259708046998
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9
Magnetic-field alignment of cholesteric liquid-crystalline DNA
Autor: D. H. Van Winkle, Robert Link, Arunava Chatterjee, Randolph L. Rill
Publikováno v: Physical Review E. 55:4354-4359
In moderately high fields (3.5 and 6.4 T) the cholesteric phase of liquid-crystalline DNA aligns with its twist axis parallel to the applied field. Thus when the field is applied in the plane of a thin sample, the well-known 'fingerprint' texture is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::61aae1bb490f6a43d57c019c86a5d499
https://doi.org/10.1103/physreve.55.4354
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