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Titolo:
INVESTIGATION OF DYNAMICAL SCALING IN A MUTUALLY SELF-SIMILAR SERIES OF BASE-CATALYZED AEROGELS
Autore:
ANGLARET E; HASMY A; COURTENS E; PELOUS J; VACHER R;
Indirizzi:
UNIV MONTPELLIER 2,SCI MAT VITREUX LAB F-34095 MONTPELLIER FRANCE
Titolo Testata:
Europhysics letters
fascicolo: 8, volume: 28, anno: 1994,
pagine: 591 - 596
SICI:
0295-5075(1994)28:8<591:IODSIA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
SILICA AEROGELS; RAMAN-SCATTERING; FRACTALS; FRACTONS; CLUSTERS; DENSITY; VIBRATIONS; STATES; LIGHT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
E. Anglaret et al., "INVESTIGATION OF DYNAMICAL SCALING IN A MUTUALLY SELF-SIMILAR SERIES OF BASE-CATALYZED AEROGELS", Europhysics letters, 28(8), 1994, pp. 591-596

Abstract

The phonon-fracton crossover in a series of fractal aerogels of well-defined microstructure is investigated for the first time. Results of small-angle neutron scattering combined with simulations establish themutual self-similarity of the series and its fractal dimension D congruent-to 1.7. Brillouin scattering is used to determine the fracton dimension related to tensorial elasticity, d congruent-to 1.1. Combined with Raman and neutron spectroscopic data, this allows to derive a consistent picture of dynamical scaling in relation with the structure ofthese materials.

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Documento generato il 02/12/20 alle ore 17:15:35