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2023 Fiscal Year Final Research Report

Functionalized-graphene sensor on the hydrophobic surface for the selective detection of ppb-level volatile organic compounds (VOCs)

Research Project

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Project/Area Number 21K14510
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 28050:Nano/micro-systems-related
Research InstitutionThe University of Tokyo (2022-2023)
Japan Advanced Institute of Science and Technology (2021)

Principal Investigator

RAMARAJ SankarGanesh  東京大学, 大学院工学系研究科(工学部), 特任研究員 (20896295)

Project Period (FY) 2021-04-01 – 2024-03-31
KeywordsGraphene / Health care / Acetone / Ethanol
Outline of Final Research Achievements

We have successfully functionalized metal nanoparticles and activated carbon molecular sieve on the surface of graphene nanoribbon FET with a size of 200 x 200 nm. 50 ppb concentration of Ethanol gas molecules was detected under 150°C using activated carbon molecular sieve functionalized graphene FET. In addition, Aluminum nanoparticles functionalized graphene showed exceptional sensitivity and selectivity towards ammonia gas molecules at real-time atmosphere. Furthermore, We have performed surface acoustic wave technique to detect even lower concentrations of acetone gas molecules. Graphene based surface acoustic wave gas sensor exhibited an enhanced gas response towards acetone gas molecules (800 ppt) under a real atmosphere.

Free Research Field

Electronic nose, Gas sensing, 2D materials FET

Academic Significance and Societal Importance of the Research Achievements

Scientific and social significance of your research achievements
We have achieved the detection of acetone molecules at parts per trillion at room temperature. Our device can be utilized to detect disease at an early stage in human beings and provide a healthy life to everyone.

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Published: 2025-01-30  

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