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Title: Selection and deposition of nanoparticles using CO.sub.2-expanded liquids

Abstract

A method for size selection of nanostructures comprising utilizing a gas-expanded liquids (GEL) and controlled pressure to precipitate desired size populations of nanostructures, e.g., monodisperse. The GEL can comprise CO.sub.2 antisolvent and an organic solvent. The method can be carried out in an apparatus comprising a first open vessel configured to allow movement of a liquid/particle solution to specific desired locations within the vessel, a second pressure vessel, a location controller for controlling location of the particles and solution within the first vessel, a inlet for addition of antisolvent to the first vessel, and a device for measuring the amount of antisolvent added. Also disclosed is a method for forming nanoparticle thin films comprising utilizing a GEL containing a substrate, pressurizing the solution to precipitate and deposit nanoparticles onto the substrate, removing the solvent thereby leaving a thin nanoparticle film, removing the solvent and antisolvent, and drying the film.

Inventors:
 [1];  [2];  [1]
  1. Auburn, AL
  2. Hillsboro, OR
Issue Date:
Research Org.:
Auburn Univ., AL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
983058
Patent Number(s):
7384879
Application Number:
11/237,601
Assignee:
Auburn University (Auburn, AL)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
DOE Contract Number:  
FG02-01ER15255
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Roberts, Christopher B, McLeod, Marshall Chandler, and Anand, Madhu. Selection and deposition of nanoparticles using CO.sub.2-expanded liquids. United States: N. p., 2008. Web.
Roberts, Christopher B, McLeod, Marshall Chandler, & Anand, Madhu. Selection and deposition of nanoparticles using CO.sub.2-expanded liquids. United States.
Roberts, Christopher B, McLeod, Marshall Chandler, and Anand, Madhu. Tue . "Selection and deposition of nanoparticles using CO.sub.2-expanded liquids". United States. https://www.osti.gov/servlets/purl/983058.
@article{osti_983058,
title = {Selection and deposition of nanoparticles using CO.sub.2-expanded liquids},
author = {Roberts, Christopher B and McLeod, Marshall Chandler and Anand, Madhu},
abstractNote = {A method for size selection of nanostructures comprising utilizing a gas-expanded liquids (GEL) and controlled pressure to precipitate desired size populations of nanostructures, e.g., monodisperse. The GEL can comprise CO.sub.2 antisolvent and an organic solvent. The method can be carried out in an apparatus comprising a first open vessel configured to allow movement of a liquid/particle solution to specific desired locations within the vessel, a second pressure vessel, a location controller for controlling location of the particles and solution within the first vessel, a inlet for addition of antisolvent to the first vessel, and a device for measuring the amount of antisolvent added. Also disclosed is a method for forming nanoparticle thin films comprising utilizing a GEL containing a substrate, pressurizing the solution to precipitate and deposit nanoparticles onto the substrate, removing the solvent thereby leaving a thin nanoparticle film, removing the solvent and antisolvent, and drying the film.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {6}
}

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