Related Experiment Video
Updated: Jul 13, 2026

Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization
Published on: July 3, 2018
High-throughput combinatorial study of local stress in thin film composition spreads
Noble C Woo1, Bryan G Ng, R Bruce van Dover
1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA. ncw3@cornell.edu
Abstract:
We investigate the stresses in thin films with sub-millimeter lateral spatial resolution using a dense array of prefabricated cantilever beams prepared by microelectromechanical-system techniques. Stress induced deflection of the cantilever is interrogated by an optical (laser/position sensitive detector) measurement system. Composition spread films are deposited on the cantilever array using a three gun on-axis magnetron cosputtering system. The position dependent composition is inferred using rate calibrations and verified by electron microprobe/energy dispersive spectroscopy. We demonstrate the function of this system using an Fe-Ni-Al composition spread with approximately 1 at. % resolution. This approach allows for measurement of the composition dependence of other electromechanical properties such as the martensitic phase transition temperature of traditional and ferromagnetic shape-memory alloys, as well as the properties of hydrogen storage materials and the magnetic response of magnetostrictive materials.
Related Concept Videos
Stress Concentrations
Stress Concentrations
The stress concentration...
Stress: General Loading Conditions
The shearing force, possessing potential directionality within the plane of the section, is simplified into two component forces running parallel to the x and y axes.
Applications of Stress
The...
Shearing Stress
The average shearing stress can be calculated by dividing the shear by the area of the cross-section.
Components of Stress
Interestingly, the hidden cube faces also experience these stresses, equal and opposite to those on the...

