Please use this identifier to cite or link to this item: doi:10.22028/D291-24037
Title: Dielectric response of silica aerogels
Author(s): Da Silva, Adao A.
Dos Santos, Dayse Iara
Aegerter, Michel A.
Language: English
Year of Publication: 1987
OPUS Source: Journal of non-crystalline solids. - 95/96. 1987, 2, S. 1159-1166
SWD key words: Alkalilösliche Kieselsäure
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: The dielectric response of porous silica aerogel prepared by hypercritical drying of gels from hydrolysis of TMOS - Methanol solution have been measured between 1.6 K to 300 K and frequencies between 50 and 105 Hz. The e{open}' value of the porous gels is found practically constant between room temperature and 100K but smaller than of fused silica. A sharp decrease of e{open}' is observed near 35 K and accompanied by a large loss peak (tg ä). A small increase of e{open}' for T < 13 K is attributed to the adsorption of He atoms on the porous superficies.
Link to this record: urn:nbn:de:bsz:291-scidok-21602
Date of registration: 12-Jun-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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