High performance arrayed graphene-based image biosensors

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03551
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials
• Research Institution: The University of Tokushima
• Principal Investigator: Ohno Yasuhide 徳島大学, 大学院社会産業理工学研究部(理工学域), 准教授 (90362623)
• Co-Investigator(Kenkyū-buntansha): 永瀬 雅夫 徳島大学, 大学院社会産業理工学研究部(理工学域), 教授 (20393762) ; 金井 康 大阪大学, 産業科学研究所, 助教 (30721310) ; 前橋 兼三 東京農工大学, 工学(系)研究科(研究院), 教授 (40229323)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: グラフェン / バイオセンサ

Outline of Final Research Achievements

Biosensing applications based on large-scale, epitaxial graphene film on SiC substrate have been investigated. In the past decade, it have been considered that graphene devices, which were made from conventional mechanical exfoliation and chemical vapor deposition method, can detect solution pH. However, no one can explain why graphene devices can detect solution pH. By using the large-scale, epitaxial graphene film synthesized on a SiC substrate, the electrical characteristics were stable for pH changes. This results indicate that the epitaxial graphene film shows inherent sensing characteristics of graphene. Moreover, from the protein adsorption experiments to the epitaxial graphene film, the charge type of the protein (positive or negative) was independent on the electrical characteristics, indicating the charge transfer from the protein to the graphene film.

Free Research Field

半導体工学