Title :
An optical fiber transducer for single myofibril force measurement
Author :
Fearn, Lisa A. ; Bartoo, Marc L. ; Myers, John A. ; Pollack, Gerald H.
Author_Institution :
Center for Bioeng., Washington Univ., Seattle, WA, USA
Abstract :
A force transducer has been developed for use in force measurement of skeletal muscle myofibrils. The transducer is suitable for measurement of passive and contractile forces in a range up to 200 mu g, with 1 mu g resolution. It is based upon the operating principle of the deflection of an optical fiber of known compliance, sensed by the differential illumination of two phototransistors. Attractive features include ease of operation and specimen mounting, high bandwidth, adaptability for different force ranges, and simple and inexpensive construction.
Keywords :
biological techniques and instruments; biomechanics; fibre optic sensors; force measurement; muscle; compliance; contractile forces; differential illumination; force range; operation ease; optical fiber deflection; optical fiber transducer; passive forces; phototransistors; simple inexpensive construction; single myofibril force measurement; skeletal muscle myofibrils; specimen mounting; Bandwidth; Biomedical measurements; Force measurement; Image analysis; Lighting; Logic testing; Muscles; Optical fibers; Photodiodes; Phototransistors; Signal analysis; Transducers; Biomechanics; Calibration; Equipment Design; Fiber Optics; Myofibrils; Transducers;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
