Liquid crystal films grown by pulsed laser deposition

The deposition of 5CB (4-cyano-41-pentylbiphenyl) liquid crystal films using different laser wavelengths (193 nm (ArF), 308 nm (XeCl) and 10.6 μm (CO 2)) over a range of fluences (up to 3 J cm −2) has been investigated. Optical microscopy, visible–UV and infrared absorption spectroscopy have been em...

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Bibliographic Details
Published inApplied surface science Vol. 138; pp. 179 - 183
Main Authors Gonzalo, J., Dyer, P.E., Snelling, H.V., Hird, M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1999
Subjects
Liquid crystals
Pulsed laser deposition
Thin films
Thin films
81.15Fg
TI
Pulsed laser deposition
61.30v
Liquid crystals
PO
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Summary:The deposition of 5CB (4-cyano-41-pentylbiphenyl) liquid crystal films using different laser wavelengths (193 nm (ArF), 308 nm (XeCl) and 10.6 μm (CO 2)) over a range of fluences (up to 3 J cm −2) has been investigated. Optical microscopy, visible–UV and infrared absorption spectroscopy have been employed to analyse the properties of the deposited material. Films with optical properties similar to those of the starting material and with no detectable degradation are obtained by using the XeCl laser, whereas ArF and CO 2 lasers produce severe and partial decomposition of the deposited material respectively. The results are discussed in terms of differences in the laser–liquid crystal interaction process for the wavelengths involved.
ISSN:0169-4332
1873-5584
DOI:10.1016/S0169-4332(98)00419-X