Abstract: A method of preparing nanothin polymer films having uniform and selectively sized pores utilizing pore forming templates. Lipids and pore forming templates are dissolved into a first solution. The solvent is removed thereby creating a lipid bilayer with pore forming templates dispersed throughout. The bilayer is hydrated and monomers and crosslinkers are added to create a second solution. A nanothin film with pore forming templates is created through polymerization of said second solution. The pore forming templates are dissolved into a third solution by addition of a chemical in which the pore forming template is soluble, but the lipid bilayer is insoluble. This third solution is separated from the mixture leaving a nanothin polymer film with pores of a uniform thickness and surface area.
Type:
Application
Filed:
March 9, 2010
Publication date:
June 24, 2010
Applicant:
UNIVERSITY OF MEMPHIS RESEARCH FOUNDATION
Inventors:
Evgueni Pinkhassik, Delia Cesara Danila, Larry Todd Banner
Abstract: A method and system for electrochemical detection of an analyte in a vapor or gas sample is provided. The method and system include exposing a vapor or gas sample to an electrochemical sensor comprising one or more electrodes and a coating that surrounds the one or more electrodes, which coating is capable of partitioning the analyte directly from the vapor or gas sample. The method and system include detecting an oxidation/reduction current during the exposing, wherein the detected current relates to a concentration of analyte in the vapor or gas sample.
Type:
Application
Filed:
October 15, 2009
Publication date:
May 13, 2010
Applicant:
UNIVERSITY OF MEMPHIS RESEARCH FOUNDATION
Abstract: A method of preparing nanothin polymer films having uniform and selectively sized pores utilizing pore forming templates. Lipids and pore forming templates are dissolved into a first solution. The solvent is removed thereby creating a lipid bilayer with pore forming templates dispersed throughout. The bilayer is hydrated and monomers and crosslinkers are added to create a second solution. A nanothin film with pore forming templates is created through polymerization of said second solution. The pore forming templates are dissolved into a third solution by addition of a chemical in which the pore forming template is soluble, but the lipid bilayer is insoluble. This third solution is separated from the mixture leaving a nanothin polymer film with pores of a uniform thickness and surface area.
Type:
Grant
Filed:
August 2, 2007
Date of Patent:
March 16, 2010
Assignee:
University of Memphis Research Foundation
Inventors:
Evgueni Pinkhassik, Delia Cesara Danila, Larry Todd Banner
Abstract: The disclosed invention is a method for screening access to a computer system using a negative authentication system. Input login requests are compared against a set of detectors comprising anti-passwords and only allowed further access if they do not match any of the anti-passwords. A method of generating a set of detectors comprising anti-passwords is also disclosed.
Type:
Application
Filed:
July 11, 2008
Publication date:
January 15, 2009
Applicant:
University of Memphis Research Foundation