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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Published in | Applied surface science Vol. 138; pp. 179 - 183 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
1999
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Subjects | |
Online Access | Get full text |
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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. |
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ISSN: | 0169-4332 1873-5584 |
DOI: | 10.1016/S0169-4332(98)00419-X |