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Transparent flexible nanogenerator as self-powered sensor for transportation monitoring

United States Patent

June 14, 2016
View the Complete Patent at the US Patent & Trademark Office
A traffic sensor includes a flexible substrate having a top surface. A piezoelectric structure extends from the first electrode layer. The piezoelectric structure has a top end. An insulating layer is infused into the piezoelectric structure. A first electrode layer is disposed on top of the insulating layer. A second electrode layer is disposed below the flexible substrate. A packaging layer is disposed around the substrate, the first electrode layer, the piezoelectric structure, the insulating layer and the second electrode layer. In a method of sensing a traffic parameter, a piezoelectric nanostructure-based traffic sensor is applied to a roadway. An electrical event generated by the piezoelectric nanostructure-based traffic sensor in response to a vehicle interacting with the piezoelectric nanostructure-based traffic sensor is detected. The electrical event is correlated with the traffic parameter.
Wang; Zhong Lin (Atlanta, GA), Hu; Youfan (Atlanta, GA), Lin; Long (Atlanta, GA)
Georgia Tech Research Corporation (Atlanta, GA)
14/ 022,407
September 10, 2013
STATEMENT OF GOVERNMENT INTEREST This invention was made with government support under agreement No. DE-FG02-07ER46394, awarded by the Department of Energy. The government has certain rights in the invention.