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. FRACTAL > STRUCTURE OF AEROGELS.

LA STRUTURE FRACTALE DES AEROGELS.

Author(s) : VACHER R., COURTENS E., PELOUS J.

Type of article: Article

Summary

DETAILED INFORMATION ON THE PECULIAR CHARACTERISTICS OF AEROGELS, WHICH ARE HIGHLY POROUS MATERIALS OBTAINED BY DEHYDRATION OF GELS WITHOUT DESTRUCTION OF THE STRUCTURE OF THEIR SOLID SKELETON. THE AUTHORS BRIEFLY DESCRIBE THE PREPARATION OF AEROGELS (FOR EXAMPLE FROM SILICA) AND THEIR POTENTIAL UTILIZATION (NOTABLY AS CATALISTS, THANKS TO A LARGE INTERNAL SURFACE, AND AS INSULANTS, THANKS TO THEIR EXTREMELY LOW MASS). THEY FOCUS ON THE FACT THAT AEROGELS HAVE A STRUCTURE CALLED < FRACTAL > (IE AUTO-SIMILAR OR INVARIANT BY SCALE DILATION) ; IT IS POSSIBLE TO DETERMINE THE < SIZE > OF THE STRUCTURE BY LIGHT DIFFUSION. THEY COMPREHENSIVELY EXPLAIN HOW THEIR RESEARCH MADE IT POSSIBLE TO CONFIRM THE < FRACTONS > CONCEPT, WHICH EASES THE COMPREHENSION OF PHYSICAL CHARACTERISTICS, MORE PARTICULARLY IN THE FIELD OF SOUND, HEAT AND LIGHT PROPAGATION. J.R.

Details

  • Original title: LA STRUTURE FRACTALE DES AEROGELS.
  • Record ID : 1991-1154
  • Languages: French
  • Source: Recherche - vol. 21 - n. 220
  • Publication date: 1990/04
  • Document available for consultation in the library of the IIR headquarters only.

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