2019 Fiscal Year Final Research Report
Fundamental study for sensitivity to exopolymeric substances of graphene in organisms and its applicability to sensors
| Project/Area Number |
17K06826
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Composite materials/Surface and interface engineering
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| Research Institution | Suzuka National College of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
平井 信充 鈴鹿工業高等専門学校, その他部局等, 教授 (50294020)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | biofilm / EPS / impedance / capacitance / graphene / spin resonance / biofiom sensor / two layer graphene |
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| Outline of Final Research Achievements |
Graphene was produced on various materials, using different processes and Biofilms(BF) was formed on them artificially. Then we found the graphene has high sensitivity to BF formation. Therefore, we produced two layer graphene on copper substrates and formed biofilms on them artificially, using biofilm reactors. And the biofilms' impedance was measured. As a result, we observed that the capacitance of materials surfaces showed peaks at some characteristic frequencies, when biofilms formed. The capacitance would be used as signal for biofilm formation and the new type sensor could be made on the base of the observation. We presume that the peak could be attributed to spin resonance of organic polymer derived from BF.
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| Free Research Field |
バイオフィルム科学・工学
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| Academic Significance and Societal Importance of the Research Achievements |
バイオフィルムは細菌が各種材料表面に付着することにより形成される不均一な膜状物質である．これが形成されることにより，衛生状況の劣化，材料の腐食劣化への移行，スケールの形成，慢性病の誘発など，各種産業分野において様々な問題を引き起こすことが知られている．そのため一方においてはこれを抑制する必要性があり，また他方においては，その進行状況（形成-成長過程）をセンシング，モニタリングする必要性がある．本研究の結果バイオフィルムのモニタリングが可能になる可能性があり，それによって多くの産業上，科学上，工業上の問題が解決される可能性があり，社会派の波及効果は極めて高い．
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