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A Low Cost and Rugged Graphene Sensor Network for Characterizing Phosphorus Levels Across Terrestrial-Aquatic Interfaces

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DE-SC0022424
Agency Tracking Number: 0000263072
Amount: $256,158.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: C53-25a
Solicitation Number: N/A
Solicitation Year: 2021
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-02-14
Award End Date (Contract End Date): 2022-11-13
Small Business Information
330 Billerica Road Suite 200
Chelmsford, MA 01824-4040
United States
DUNS: 796010411
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Baris Unal
 (978) 856-4169
Business Contact
 Indira Edwards
Phone: (978) 856-4151
Research Institution

Traditional methods for measuring phosphorus in terrestrial and aquatic systems (TAIs) entail manually acquiring samples and performing laboratory tests. An improved approach is therefore needed to enable better collection of chemical data from coastal environments. Ideally, an automated in situ system capable of continuously measuring phosphorus within complex TAI environments would be utilized. Triton Systems will design, build, and test a novel sensor platform for continuous, autonomous, in situ analysis of phosphorus in TAIs. The technology will be based on a novel graphene field effect transistor (GFET) functionalized with molecular receptors for selective phosphorus detection. The sensor components will be part of an integrated, ruggedized system for direct contact with the TAI and prolonged exposure to the environment. Phase I will focus on demonstrating that core sensing components of the proposed GFET platform are a capable of detecting phosphorus in coastal environments. This will be accomplished by designing and fabricating the GFET sensor functionalized with ion-specific receptors, determining the sensitivity and selectivity of GFET to phosphate, and demonstrating that Triton’s sensor can quantitatively measure phosphate in a simulated coastal environment. The technology developed during this program will fill the current capability gap for real-time, in situ chemical sensing platform for analysis of coastal systems. The proposed platform will enable previously inaccessible insight into the coastal ecosystem. The sensor platforms will be deployable over large areas in fully aquatic, fully terrestrial, and TAIs to allow relevant chemical and physical data about the coastal system to be mapped with respect to location, depth, and time. These data will lead to a predictive understanding of complex biological, earth, and environmental systems for energy and infrastructure security, independence, and prosperity.

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

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