Dielectric response of silica aerogels
Source abstract
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 10 5 Hz. The ɛ' value of the porous gels is found practically constant between room temperature and 100K but smaller than of fused silica. A sharp decrease of ɛ' is observed near 35 K and accompanied by a large loss peak (tg δ). A small increase of ɛ' for T < 13 K is attributed to the adsorption of He atoms on the porous superficies.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aerogels and thermal insulation · Mesoporous Materials and Catalysis · Glass properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
Show source-provided references
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