2013 Fiscal Year Final Research Report
Microbes and cells on surface of nanoporous metals
| Project/Area Number |
24760572
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | ナノポーラス / 金 / 抗菌性 |
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| Research Abstract |
Microbes (Escherichia coli and Staphylococcus epidermidis) were cultured on nanoporous gold fabricated by dealloying. For comparison, they were also cultured on flat gold plate with no nanoporous structure. Numbers of both microbes decreased on nanoporous gold more significantly than those on flat gold plate. Observations with scanning electron microscope and scanning probe microscope revealed that Escherichia coli on nanoporous Au had dimple on its center and that Staphylococcus epidermidis on nanoporous gold had fractured cell membrane. These antibacterial properties of nanoporous gold are presumably attributed to the abnormal effect of nanoporous gold on surrounding organic matters.
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