Accession Number:

ADA014655

Title:

Liquid Crystal Fiberoptic Temperature Probe.

Descriptive Note:

Final rept. 1 Mar 74-28 Feb 75,

Corporate Author:

UTAH UNIV SALT LAKE CITY

Report Date:

1975-06-11

Pagination or Media Count:

20.0

Abstract:

The design, construction and testing details of a liquid crystal fiberoptic temperature probe are described. A liquid crystal sensor is attached to the distal tip of a fiberoptic probe. Pulsed light from a red LED illuminates the liquid crystal sensor through the fiberoptics and reflected red light which is strongly temperature dependent is collected. An electronic system provides all the necessary electro-optic components for the unit, including a temperature readout. Probe response data shows sensitivity, stability, hysteresis and reproducibility. A modification of the liquid crystal sensor using a thin coating of resistive material attached to the sensor tip is described by measuring electric field strength in tissues.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE