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Laboratoire de Spectroscopie Moléculaire de Surface
Yves Caudano


In-Situ Vibrational Study of SiO2/liquid Interface

H. Fukidome (1, 2), O. Pluchery (1), K.T. Queeney (1), Y. Caudano (3), K. Raghavachari (1), M.K. Weldon (4), E.E. Chaban (4), S.B. Christman (1), H. Kobayashi (2), and Y.J. Chabal (1)
Surf. Sci., 502-503 (2002) 498-502


The surface of SiO2 in contact with a liquid has been studied in situ by Fourier transform infrared spectroscopy, electrochemistry and ab initio quantum chemical calculations. Experimental issues arising from the cell designed have been addressed, notably the influence of the medium above the SiO2 film on the line shape of the Si–O vibrations. Using electrical potential control of the surface with electrochemistry, the hydrated states of the SiO2 surface have been identified, featuring a neutral SiOH species and pentavalent Si(OH)OH- anionic centers.

Author addresses

  1. Agere Systems
    Electronic and Photonic Materials Physics Research
    600-700 Mountain Avenue, Murray Hill, NJ 07974, USA

  2. ISIR
    Osaka University
    8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

  3. Laboratoire de Spectroscopie Moléculaire de Surface (LASMOS)
    Institute for Studies in Interface Science (ISIS)
    Facultés Universitaires Notre-Dame de la Paix (FUNDP)
    61 Rue de Bruxelles, B-5000 Namur, Belgium

  4. Bell Laboratories - Lucent Technologies
    600 Mountain Avenue, Murray Hill, NJ 07974, USA

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Last modified, July 10th 2003

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