Synthesis and evaluation of artificial dielectrics consisting of metal nanoparticles

金属纳米颗粒人工电介质的合成与评价

• 批准号: 21760012
• 负责人: SATO Seiichi
• 金额: $ 2.58万
• 依托单位: University of Hyogo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760012/
• 关键词: 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; 単分子層被膜; 電気伝導; 四端子測定; 誘電率; Maxwell-Garnet

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.

巯基琥珀酸单层保护的金纳米粒子在水溶液表面自组装成单晶排列，通过改变纳米粒子的尺寸，纳米粒子晶格的介电常数在5到11之间变化，随机堆积的金纳米粒子薄膜的电导率在3.0到500之间。 S/cm，温度系数为1.2×10^<-4>K^<-1>，这些材料比块状金小一个数量级，可用于电子应用，例如抑制电子器件热失控的镇流电阻，以及用于增加器件密度的栅极材料。

项目成果

Refractive index regulation of gold nanocrystal superlattices by varying the nanocrystal size

通过改变纳米晶体尺寸来调节金纳米晶体超晶格的折射率

• 发表时间: 2010
• 期刊: Japanese Journal of Applied Physics Vol.49
• 作者: S.Sato;T.Ito;K.Kimura
• 通讯作者: K.Kimura

Structural and electrical characterization of three-dimensional superlattices of organic monolayer protected gold nanocrystals

有机单层保护金纳米晶体三维超晶格的结构和电学表征

• 发表时间: 2011
• 期刊: Japanese Journal of Applied Physics Vol.50
• 作者: S.Sato;A.Matsuda;T.Sugimoto;K.Kimura
• 通讯作者: K.Kimura

Refractive lndex Regulation of Gold Nanocrystal Superlattices by Varying the Nanocrystal Size

通过改变纳米晶体尺寸调节金纳米晶体超晶格的折射率

• 发表时间: 2009
• 作者: S.Sato;T.Ito;K.Kimura;佐藤井一
• 通讯作者: 佐藤井一