2010 Fiscal Year Final Research Report
Synthesis and evaluation of artificial dielectrics consisting of metal nanoparticles
| Project/Area Number |
21760012
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | University of Hyogo |
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Principal Investigator |
SATO Seiichi University of Hyogo, 大学院・物質理学研究科, 助教 (90326299)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 金ナノ粒子 / 自己集合 / 3次元超格子 / 光学誘電率 / 電気伝導度 / 温度依存性 |
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| Research Abstract |
Mercaptosuccinic acid monolayer protected gold nanoparticles were self-assembled into single crystal arrangements at aqueous solution surfaces. The permittivity of the nanoparticle lattices was varied between 5 and 11 by altering the component nanoparticle size. Randomly packed gold nanoparticle films showed the conductivities between 3.0 and 500 S/cm, and their temperature coefficients were 1.2×10^<-4> K^<-1>, which was one order of magnitude smaller than that of bulk gold. These materials are potentially useful for electronic applications such as ballast resistances, which suppress thermal runaway of electronic devices, and gate materials for increasing device density.
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