I'm interested in doing an experimental analysis of ribbon transducers to contrast with simulations. This data could be made available to the community to aid in transducer development. A ribbon transducer consists of a rectangular element of metal foil suspended within a magnetic gap and clamped at its ends (ie a clamped-clamped membrane). Current is applied to the foil, which produces an electromagnetic field that interacts with the magnetic field generated by the permanent magnets. The foil bends in response to this force. A modal analysis could be conducted with the use of a scanning laser vibrometer system. This would appear sufficient for the task. http://www.polytec.com/usa/158_918.asp A dynamic resistance vs temperature measurement of the foil would appear to be valuable. However, I'm not sure what instrumentation would be required or how to set up such an experiment. Any thoughts?