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Sharmistha Bhadra

McGill University, Canada
Presenter Bio

Sharmistha Bhadra joined McGill University in 2016 and is currently an assistant professor. She has published over 65 papers and holds 2 patents in sensor area. Her current research interests are in the area of printed and flexible hybrid electronics, microelectronics, microelectromechanical systems, and sensors and actuators. Her research program at McGill University leverages conventional design and development tools as well as printed electronics technology to find cost effective and high performance innovative electronic technology. One of her concrete research goal is to use of printed and flexible hybrid electronics technology to develop high performance sensors and other basic electronic components.

Abstract: Flexible Printed Piezoelectric Sensors: A Path Towards Low Cost Sensing
Among different types of sensors, piezoelectric sensors are of great interest due to their high sensitivity, long lifetime and fast response time. Some types of piezoelectric sensors have the ability to work in wired and wireless modes. With the advancement in flexible printed electronics, researchers have started to fabricate flexible printed piezoelectric sensors as they are low cost, conformable and have lower frequency of operation than their rigid microfabricated counterpart. However, very few researchers have successfully applied flexible printed electronics technology to develop highly sensitive piezoelectric sensor. This tutorial session will identify the key difficulties to achieve highly sensitive piezoelectric sensor. It will cover conventional materials, processes and design used for flexible printed piezoelectric sensor, their limiting factors and present emerging materials and processes that can overcome those limitations. It will also cover how new circuit topologies can improve the performance of flexible printed piezoelectric sensors. Some of the performance improvement techniques will be presented in the context acoustic wave sensor, a popular type of piezoelectric sensor. The tutorial will present some examples of high performance piezoelectric sensor from from the literature (with some from the author’s laboratory). At the end, the tutorial will allow the attendees to brainstorm on possible ideas (other than the ideas presented in the tutorial) to improve the performance of printed flexible piezoelectric sensors.

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