1998
DOI: 10.1016/s0022-3093(98)00131-8
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Transparent silica aerogels

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Cited by 142 publications
(102 citation statements)
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“…Secondly, the scattering contribution from surface inhomogeneity is assumed to be small compared to the bulk contribution. 9 This assumption can break down especially for thin aerogel samples, which can be observed in Figure 4 (where there is a larger discrepancy between model and experiment for thin samples).…”
Section: Resultsmentioning
confidence: 95%
See 1 more Smart Citation
“…Secondly, the scattering contribution from surface inhomogeneity is assumed to be small compared to the bulk contribution. 9 This assumption can break down especially for thin aerogel samples, which can be observed in Figure 4 (where there is a larger discrepancy between model and experiment for thin samples).…”
Section: Resultsmentioning
confidence: 95%
“…[1][2][3][4] In particular, the optical transparency of silica aerogel in the solar spectrum is crucial for many solar related applications [5][6][7][8] and has been studied extensively. [9][10][11][12][13][14][15][16][17][18] J. Fricke et al showed that the optical transparency of silica aerogels is tied closely to its microstructure which acts as Rayleigh scattering centers.…”
Section: Introductionmentioning
confidence: 99%
“…As a result, dried samples keep the porous texture of the wet stage. In general, aerogels have a high specific surface area, a very low apparent density and a low refraction index [20,80,52]. Furthermore, the thermal properties of aerogels may undertake a structural evolution when aged in a liquid medium and/or heat treated during the synthesis process.…”
Section: Synthesismentioning
confidence: 99%
“…To convert a gel into an aerogel, the solvent is removed by extraction with supercritical CO 2 or by the direct conversion of the solvent in supercritical state in order to prevent the structure collapse caused by capillary forces [Fricke 1986]. The chemistry of aerogel materials is relatively f lexible: their pore size and surface area can be tailored during the synthesis by changing the solvent and catalysts [Rao et al 1993, Pajonk 1998, Stolarski et al 1999]. Furthermore, different functional groups can be implemented in the structure of silica aerogels by surface modification or by reaction during sol-gel processes Schubert 1997, Husing et al 1998].…”
Section: Introductionmentioning
confidence: 99%