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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/16979

Title: Thermomechanical properties of thin organosilicate glass films treated with ultraviolet-assisted cure
Authors: Iacopi, F.
Beyer, G.
Travaly, Y.
Waldfried, C.
Gage, D. M.
Dauskardt, R. H.
Houthoofd, K.
Jacobs, P.
Adriaensens, P.
Schulze, K.
Schulz, S. E.
List, S.
Carlotti, G.
Issue Date: 2007
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: ACTA MATERIALIA, 55 (4), p. 1407-1414
Abstract: Ultraviolet (UV)-assisted cure has recently been reported as an efficient method to enhance the mechanical properties of organosilicate glasses (OSG) at the expense of only minor film densification. In this work we show that, depending on the OSG material, the effect of UV-cure on fracture and thermal conductivity properties can vary to a large extent even though the same extent of stiffness enhancement is obtained. When the increase of elastic modulus is mostly due to the rearrangement of the silica matrix into more stable silica bonds, the film cohesion strength and thermal conductivity are also improved. Conversely, these properties remain unaffected when the dominant UV-cure mechanism is the increase of matrix connectivity. In the latter case, film adhesion is enhanced. The dominant UV-cure mechanism depends on the initial degree of cross-linking and on the mobility of the OSG matrix. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Notes: IMEC, B-3001 Louvain, Belgium. Axcelis Technol, Beverly, MA 01915 USA. Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. Dept Bioengn, B-3001 Louvain, Belgium. IMO, Div Chem, B-3590 Diepenbeek, Belgium. Tech Univ Chemnitz, Ctr Microtechnol, D-09107 Chemnitz, Germany. Univ Perugia, Dept Phys, I-06123 Perugia, Italy.
URI: http://hdl.handle.net/1942/16979
DOI: 10.1016/j.actamat.2006.10.008
ISI #: 000244548100026
ISSN: 1359-6454
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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