Observation of the Raman scattering by acoustic vibrations of fractal voids
Fracture Physics Department, Ioffe Physico-Technical Institute
Russian Academy of Sciences - 194021 St. Petersburg, Russia
2 Vavilov State Optical Institute - 193171 St. Petersburg, Russia
Accepted: 26 April 2001
The Raman scattering by acoustic vibrations of the fractal units is well studied for nanoscopic solid fractals vibrating in vacuum. This work gives evidence of the existence of a similar effect but involving the vibrations of closed fractal nanocracks propagated in a dense medium (vitreous ). The fracton spectrum was found to be sensitive to both crack size and compactness of the crack wall material.
PACS: 68.35.-p – Solid surfaces and solid-solid interfaces: Structure and energetics / 78.30.Ly – Disordered solids
© EDP Sciences, 2001