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ASTM E2246 PDF
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Standard Test Method for Strain Gradient Measurements of Thin, Reflecting Films Using an Optical Interferometer
| Published by | Publication Date | Number of Pages |
| ASTM | 05/01/2018 | 21 |
ASTM E2246 – Standard Test Method forStrain Gradient Measurements of Thin, Reflecting Films Using an Optical Interferometer
1.1 This test method covers a procedure for measuring the strain gradient in thin, reflecting films. It applies only to films, such as found in microelectromechanical systems (MEMS) materials, which can be imaged using an optical interferometer, also called an interferometric microscope. Measurements from cantilevers that are touching the underlying layer are not accepted.
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