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Fiber Optic Affinity Ligand Sensor for Quantification of Ultra-Trace-Level Fuel Contaminants

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 36353
Amount: $99,787.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1997
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
P.O. Box 11704
Blacksburg, VA 24062
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Mark E. Jones
 (540) 953-4268
Business Contact
Phone: () -
Research Institution

F&S and their research partners propose a comprehensive plan to develop a fiber optic-ased chemical detection system for the quantification of metal contaminants in aviation fuel. The system will utilize recently developed long-period grating (LPG) technology which detects index-of-refraction changes resulting from target molecules binding to affinity coatings. Calculations based on experimental results indicates an LPG-based chemical sensor sensitivity in measurements to parts-pertrillion (ppt). In the past, metalloenzymes such as carbonic anhydrase have been used in fluorescent-based fiber optic sensors (Thompson and Jones, 1993). However the sensitivities reported were only in the nanomolar range, and required the binding of a fluorescent molecule after capture of Zn (II). We emphasize here that with a metal affinity LPG sensor, we can achieve 10 to 1000-fold greater sensitivities by direct loading of a sample, and without additional fluoresent label binding steps. Hence, less bulky device designs which do not have concentating, pre-purification, and ion-based mass spectrometric detectors are achievable. It will therefore be possible to integrate the chemical LPG sensor into a portable, operated by a technical with minimal training.

* Information listed above is at the time of submission. *

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