Method and apparatus for the preparation of monolayers of particles or molecules
AssigneeNano World Projects Corporation
InventorGilles Picard
Life of this patent
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Abstract
A method and an apparatus are described to prepare monolayers of particles (or molecules) (3), realizing the steps of: injecting a liquid film (2) with particles (3) dispersed on the external surface of a rotary member (1); adjusting the surface charge density of the particles (3) by injecting adsorption reagents (10), carrying particles (3) placed on film (2) surface so that they form a substantially uniform monolayer (5); putting the monolayer (5) on the liquid film surface (2) in contact with a substrate (7); and advancing the rotary member (1) longitudinally with respect to the substrate (7), in both directions, so that the monolayer (5) is detached from the liquid film (2) and attached to the substrate (7).
Claims15
A method for the preparation of a monolayer of particles or molecules, comprising:
- injecting a thin liquid film containing said particles or molecules onto an external surface of a rotary member;
- adjusting a surface charge density of said particles or molecules through the injection of an adsorption reagent, thereby carrying said particles or molecules to a gas-liquid interface of said thin liquid film;
- forming a uniform monolayer of said particles or molecules on said gas-liquid interface;
- transferring said monolayer from the gas-liquid interface to a solid substrate;
- and
- moving said rotary number in a longitudinal direction relatively to said substrate, thereby separating said monolayer from said thin liquid film and adsorbing said monolayer to said substrate.
An apparatus for the preparation of a monolayer of particles or molecules, comprising:
- a rotary member;
- a substrate for receiving said monolayer from said rotary member;
- a motor mechanically connected to said rotary member for advancing said rotary member wherein said rotary member is adapted to advance in a longitudinal direction with respect to said substrate to transfer said monolayer from said rotary member to said substrate;
- an injection module having a plurality of openings and spaced apart from said rotary member thereby forming a gap therebetween;
- a first channel defined by a first opening of said plurality of openings in said injection module for injecting a thin liquid film containing said particles or molecules toward said rotary member upstream of said substrate;
- a second channel defined by a second opening of said plurality of openings in said injection module for injecting an adsorption reagent toward said rotary member upstream of said substrate;
- a third channel defined by a third opening of said plurality of openings in said injection module connected to a suction pump for removing said liquid film away from said substrate after said monolayer is transferred from the rotary member onto said substrate;
- and
- wherein said rotary member is adapted upon rotation for forming said monolayer on a gas-liquid interface of said thin liquid film.
The apparatus according to clam 11, wherein said substrate comprises a liquid.
Dependencies are inferred from the claim text.