Complex particles produced from graphite powder by acoustic cavitation in water.
Spaghetti-like structures made of fibers whose diameter are of about 1-2 microns, straight structures from about 10-20 microns and optically semitransparent particles, with linear dimension up to about 0.3 mm, were obtained from fine graphite powder in water subjected for 20 h to acoustic cavitation at a frequency of 19.5 kHz. A picture of spaghetti-like structures obtained by scanning electron microscopy is reported. From X-ray diffraction pattern, it was found that the semitransparent precipitates have an amorphous nature.
Diodati
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Istituto Nazionale per la Fisica della Materia, Unità di Perugia and Dipartimento di Fisica, Università di Perugia, Via A. Pascoli, I-06123 Perugia, Italy. diodati@perugia.infn.it
Giannini
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Sacchetti
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