INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Frequency dependent structures in an electrostatically driven powder medium
Autor/es:
L. M. SALVATIERRA; O. L. CORTES BRACHO; P. L. CIRTES BRACHO; I. M. IRURZUN; E. E. MOLA
Revista:
CHEMICAL PHYSICS LETTERS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2009 p. 194 - 197
ISSN:
0009-2614
Resumen:
We report the existence of different phases when a composite inorganic powder salt, made up of irregularly shaped particles, is under the influence of a high electric field with variable amplitude and frequency.We show that the charged granular medium undergoes a fingering growth resulting inconsequent coarsening of the fingers. The size, velocity and stability of the fingers vary with the frequency and amplitude of the electric field. We also found phases that we called a granular solid and a granular gas. We propose a phase diagram of a granular system under the influence of a high electric field.
