Conducting polymer nanofiber sensors
First Claim
1. A sensor for sensing the presence of a chemical vapor, the sensor adapted for interconnecting to an electrical monitor for measuring a reaction of the sensor to the chemical vapor, the sensor comprising,a positive terminal, the positive terminal being conductive,a negative terminal, the negative terminal being conductive, the terminals adapted for interconnection to the electrical monitor, anda film of organic conductive polymer nanofibers extending between the positive and negative terminal for producing a change in conductivity between the positive terminal and the negative terminal as monitored by the electrical monitor when the film is exposed to the chemical vapor,wherein the positive terminal and the negative terminal are made of gold and the conducting polymer is polyaniline, the sensor further comprising,a thiol surface layer disposed between the terminals and the film.
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Accused Products
Abstract
Polymer nanofibers, such as polyaniline nanofibers, with uniform diameters less than 500 nm can be made in bulk quantities through a facile aqueous and organic interfacial polymerization method at ambient conditions. The nanofibers have lengths varying from 500 nm to 10 μm and form interconnected networks in a thin film. Thin film nanofiber sensors can be made of the polyaniline nanofibers having superior performance in both sensitivity and time response to a variety of gas vapors including, acids, bases, redox active vapors, alcohols and volatile organic chemicals.
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Citations
1 Claim
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1. A sensor for sensing the presence of a chemical vapor, the sensor adapted for interconnecting to an electrical monitor for measuring a reaction of the sensor to the chemical vapor, the sensor comprising,
a positive terminal, the positive terminal being conductive, a negative terminal, the negative terminal being conductive, the terminals adapted for interconnection to the electrical monitor, and a film of organic conductive polymer nanofibers extending between the positive and negative terminal for producing a change in conductivity between the positive terminal and the negative terminal as monitored by the electrical monitor when the film is exposed to the chemical vapor, wherein the positive terminal and the negative terminal are made of gold and the conducting polymer is polyaniline, the sensor further comprising, a thiol surface layer disposed between the terminals and the film.
Specification
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- Resources
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Current AssigneeAerospace Corporation, Regents of the University of California (University of California)
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Original AssigneeAerospace Corporation, Regents of the University of California (University of California)
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InventorsHuang, Jiaxing, Virji, Shabnam, Kaner, Richard B., Weiller, Bruce H.
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Primary Examiner(s)Olsen; Kaj K.
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Application NumberUS10/735,078Publication NumberTime in Patent Office1,272 DaysField of Search204/400, 422/82.02, 977/953, 977/957US Class Current204/400CPC Class CodesG01N 27/126 comprising organic polymersG01N 27/127 comprising nanoparticlesY10S 977/953 Detector using nanostructureY10S 977/957 Of chemical property or pre...
