CNT-POLYIMIDE NANOCOMPOSITE PIEZORESISTIVE THIN FILM DEVICES FOR STRAIN AND PRESSURE MEASUREMENT by

GRAPHENE-POLYIMIDE NANOCOMPOSITE PIEZORESISTIVE THIN FILM DEVICE FOR STRAIN AND PRESSURE MEASUREMENT by

Joint International Symposium on System-Integrated Intelligence 2012: New Challenges for Product and Production Engineering Laser Thin Film Patterning of Embedded Strain Sensors on Non-Planar Surfaces

Strain sensors build up directly on machine components by thin film techniques enable measurement of forces, strain and pressure even in harsh environments. Up to day, the application of thin film sensors is restricted to planar surfaces due to limitations in standard patterning techniques. We present an alternative patterning method based on laser thin film ablation. During laser processing of...

Full-field bulge testing using global digital image correlation

The miniature bulge test is an acknowledged method for characterizing freestanding thin films. Nevertheless, some discrepancies in the quantitative results from such tests can be found in literature, explained in part by erroneous assumptions in the analytical description used to compute the global stress and strain from the membrane pressure and deflection. In this research, a new method is pr...

Microscale Laser Shock Peening of Thin Films, Part 1: Experiment, Modeling and Simulation

Microscale Laser Shock Peening (LSP), also known as Laser Shock Processing, is a technique that can be potentially applied to manipulate residual stress distributions in metal film structures and thus improve the fatigue performances of micro-devices made of such films. In this study, microscale LSP of copper films on single crystal silicon substrate is investigated. Before and after-process cu...

Sensitive gas sensor embedded in a vertical polymer space-charge-limited transistor

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