Method of producing three dimensional assembly of particles...

Details Method of producing three dimensional assembly of particles... Method of producing three dimensional assembly of particles...

B - Operations, Transporting

29

C

B29C 67/02 (2006.01) B01D 21/00 (2006.01) B01J 19/10 (2006.01)

Patent

CA 2375131

A method of producing three dimensional ordered arrays of particles. The method may be used for the preparation of nanocomposite materials with highly periodic structures. More particularly the invention provides a method of producing three dimensional arrays based on applying a controlled oscillatory motion to settling dispersions of colloid particles. The controlled oscillatory motion is characterized by G=A.omega.2/g wherein g is the gravitational constant, A is the displacement and .omega. is angular frequency. G is maintained in the desired range by varying values of A within an effective range of displacements and within ~ an effective range of frequencies.

Procédé servant à produire des ensembles tridimensionnels ordonnés de particules. On peut mettre ce procédé en application afin de préparer des matériaux nanocomposites présentant des structures extrêmement périodiques. L'invention concerne, plus particulièrement, un procédé de production d'ensembles tridimensionnels basé sur l'application d'un mouvement oscillant commandé à des dispersions de particules colloïdales en cours de sédimentation. Ce mouvement oscillant commandé est caractérisé par G=A omega <2>/g, dans laquelle g représente la constante de gravité, A représente le déplacement et omega représente la fréquence angulaire. G est maintenue dans la plage souhaitée par variation des valeurs de A à l'intérieur d'une plage effective de déplacements et de upsilon à l'intérieur d'une plage effective de fréquences.

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