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Liquid crystal-based sensor for real-time detection of O3, CO and CO2

Award Information

Department of Health and Human Services
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Platypus Technologies, LLC
5520 Nobel Drive Suite 100 MADISON, WI -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Liquid crystal-based sensor for real-time detection of O3, CO and CO2
Agency: HHS
Contract: 1R43ES016389-01
Award Amount: $599,958.00


DESCRIPTION (provided by applicant) The goal of this project is to develop a GPS-enabled multi-analyte sensor that can detect and measure exposure to trace gases present in air, specifically ozone, carbon monoxide and carbon dioxide gases. This sens or is based on the innovative exploitation of the anchoring of liquid crystals to a surface functionalized with metal ions. In preliminary studies we have demonstrated the ability to identify combinations of metals that selectively bind ozone and to design multi-arrays of metals that create fingerprints specific for functional groups. We also demonstrated the use of this new technology to rapidly (~ 10 seconds) measure exposure to ppb concentrations of an organophosphate compound. The sensing surfaces we cr eated could be tuned to be reversible, were unaffected by humidity, and responded in a dose-dependent manner. These data strongly support the feasibility of PlatypusTM technology as the basis of a compact, multi-analyte, field deployable personal device fo r detection of exposure to trace gases. In this proposal we will develop a sensor subsystem and integrate it with GPS-enabled components that track and store information such as degree of exposure, time and duration of exposure and exact location of exposu re events. Our intended product will allow simple uploading of the data to a computer and will be tested under field conditions. Such a product is needed to facilitate the understanding of human susceptibility to environmental exposures.

Principal Investigator:

Bharat R. Acharya

Business Contact:

Renee Herber
Small Business Information at Submission:

5520 Nobel Drive Suite 100 MADISON, WI 53711

EIN/Tax ID: 391992935
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No