Piezoelectric Motor-Controlled TEM Strain Holder
This image is a compilation of computer-aided drafting (CAD) drawings (by Glenn Fried) and a photograph (by Jo Wozniak) of the recently completed TEM strain holder, conceived of and built here at the University of Illinois. The strain holder contains a computer-controlled piezoelectric "inchworm"-type motor that is connected, via a stainless steel rod, to a beryllium-copper sled at the proximal end of the specimen window. A micro-electrical-mechanical system (MEMS) device, developed by Aman Haque and Taher E. Saif, attaches to the proximal and distal sleds. The MEMS device, which measures 0.1 x 3 x 10 mm, has its own integrated strain gauge as well as a thin film metal specimen, deposited during the production of the wafer on which the device was formed. The TEM strain holder permits observation of the thin film specimen simultaneous with the application of force by the nanomotor. It is a welcome addition to the available instrumentation in the Microscopy Suite and Visualization Media and Imaging Laboratory.
- Glenn A. Fried , ITG, Beckman Institute