Preparation and modification of metal nano-contacts Photo-excitation
金属纳米触点的制备与修饰 光激发
基本信息
- 批准号:14340219
- 负责人:
- 金额:$ 10.88万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2003
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We have developed novel techniques to control metal structures in the size range less than a few tens nm by combing the effects of photo-irradiation and applying an external electric field. One of the promising applications of metal nanostructures is for single molecular detection employing surface enhanced & Raman scattering (SERS). Although several sophisticated methods were successful with respect to generation of fully reproducible SERS activity, the preparations were often complicated due to the need for specialized synthetic or preparative techniques. Novel facile and controllable techniques to prepare SERS active substrates should be developed. In this study, our technique to control metal nanostructure on glass substrate was used to prepare the films showing very strong SERS signal. Sustainable metal nanocontacts were fabricated under controlled electrochemical potential in solution.Metal nanocontacts of Cu, Ag, Ni, Pd, and Pb were fabricated via the electrochemical etching or deposition method at a gap of sustainable thin Au wires in solution. Relatively stable behaviors of the conductance quantization exhibiting a unit value were apparent at the contacts of Cu, Ag, Ni, and Pd at room temperature. Conductance quantization behavior of the Pb contact was rather unstable in comparison with other metals. echanical stability of Au nanocontact was also examined by controlling electrochemical potential in various solution containing ClO_<4->, S0_4^<2->, Cl^-ions.
我们已经开发了新的技术来控制金属结构的尺寸范围小于几十纳米,通过结合光照射和施加外电场的影响。金属纳米结构的一个很有前景的应用是利用表面增强和拉曼散射(Sers)进行单分子检测。虽然几种复杂的方法是成功的,就产生完全可再现的Sers活性,由于需要专门的合成或制备技术,制备往往是复杂的。因此,应发展简便、可控的Sers活性基底制备新技术。在这项研究中,我们使用控制玻璃基底上金属纳米结构的技术来制备具有非常强的Sers信号的薄膜。在溶液中控制电化学势制备可持续的金属纳米接触,通过电化学蚀刻或沉积方法在溶液中可持续的细Au线间隙处制备Cu、Ag、Ni、Pd和Pb的金属纳米接触。在室温下,Cu、Ag、Ni和Pd的接触处,电导量子化呈现出相对稳定的单位值行为。与其他金属相比,Pb接触的电导量子化行为是相当不稳定的。通过控制电化学电位,研究了Au纳米接触在不同ClO_<4->2、SO_4 ~<2->(2-)、Cl ~(2-)溶液中的机械稳定性。
项目成果
期刊论文数量(36)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
K.Okazaki: "Absolute Potential of the Fermi Level of Isolated Single-Walled Carbon Nanotubes"Phys.Rev.B.. 68. 035434 (2003)
K.Okazaki:“孤立单壁碳纳米管费米能级的绝对势”Phys.Rev.B.. 68. 035434 (2003)
- DOI:
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- 影响因子:0
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- 通讯作者:
K.Murakoshi et al.: "Effect of Photo-irradiation and External Electric Field on Structural Change of Metal Nano-Dots in Solution"Surf. Sci.. (in press).
K.Murakoshi 等人:“光照射和外部电场对溶液中金属纳米点结构变化的影响”Surf。
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- 影响因子:0
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K.-i.Okazaki: "Absolute Potential of the Fermi Level of Isolated Single-Walled Carbon Nanotubes"Phys.Rev.B. 68. 035434 (2003)
K.-i.Okazaki:“孤立单壁碳纳米管费米能级的绝对势”Phys.Rev.B。
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- 影响因子:0
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K.-i.Okazaki: "Preparation of Highly Dispersed Single Walled Carbon Nanotubes on Metal Surface in Solution"Trans.Mater.Res.Soc.Jpn. 28. 931-934 (2003)
K.-i.Okazaki:“溶液中金属表面高度分散的单壁碳纳米管的制备”Trans.Mater.Res.Soc.Jpn.
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- 影响因子:0
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Y.Sawai: "Photo-induced Metal Deposition onto an Au Electrode in Solution"J.Photochem.Photobio.A. 106. 19-25 (2003)
Y.Sawai:“溶液中金电极上的光诱导金属沉积”J.Photochem.Photobio.A。
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MURAKOSHI Kei其他文献
MURAKOSHI Kei的其他文献
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{{ truncateString('MURAKOSHI Kei', 18)}}的其他基金
Study on Photoelectric Conversion System by utilizing Localized Enhanced Photo Field
利用局域增强光场的光电转换系统研究
- 批准号:
26620188 - 财政年份:2014
- 资助金额:
$ 10.88万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Creation of strain and temperature detecting elements at nanometer scale
创建纳米级应变和温度检测元件
- 批准号:
24655162 - 财政年份:2012
- 资助金额:
$ 10.88万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Nano-engineering and creation of functions of carbon nanotube
纳米工程和碳纳米管功能的创造
- 批准号:
23655167 - 财政年份:2011
- 资助金额:
$ 10.88万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Control of a small amount of molecules in two-dimensional monolayer by local modification
通过局部修饰控制二维单层中的少量分子
- 批准号:
21350001 - 财政年份:2009
- 资助金额:
$ 10.88万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Fabrication of Metallic Architectures for precise control of energy conversion
制造金属结构以精确控制能量转换
- 批准号:
16205026 - 财政年份:2004
- 资助金额:
$ 10.88万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
ELECTROCHEMICAL CONTORL OF SIGLE ELECTRON TRANSFER AT INTERFACES IN SOLUTION
溶液界面单电子转移的电化学控制
- 批准号:
12440198 - 财政年份:2000
- 资助金额:
$ 10.88万 - 项目类别:
Grant-in-Aid for Scientific Research (B)