The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2018
Filed:
Feb. 27, 2014
Institut National Des Sciences Appliquees DE Toulouse, Toulouse, FR;
Centre National DE LA Recherche Scientifique, Paris, FR;
Universite Paul Sabatier Toulouse Iii, Toulouse, FR;
Laurence Ressier, Ramonville Saint Agne, FR;
Sangeetha Neralagatta Munikrishnaiah, Toulouse, FR;
Pierre Moutet, Toulouse, FR;
Institut National des Sciences Appliquees de Toulouse, Toulouse, FR;
Centre National de la Recherche Scientifique, Paris, FR;
Universite Paul Sabatier Toulouse III, Toulouse, FR;
Abstract
Method for producing a directed monolayer or multilayer assembly of colloidal nanoparticles attached to an electret substrate, including imparting a surface electric potential to an electret substrate according to a pattern of positive and/or negative electric charges, and contacting an electret substrate with a colloidal dispersion. The colloidal dispersion has electrically neutral or near neutral and electrically polarizable colloidal nanoparticles, and a nonpolarizing or weakly polarizing dispersion medium. The absolute value of the surface electric potential and the concentration of polarizable nanoparticles are no lower than a first surface electric potential threshold and no lower than a second concentration threshold, respectively, such as to obtain an assembly having a desired geometric shape, at least the first layer of which is compact in terms of the absence of undesired gaps having sizes greater than the size of two adjacent nanoparticles, preferably not greater than the size of one nanoparticle.