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DEVELOPMENT OF A MOLECULAR DEVICE SENSOR USING A SPACE CREATED BETWEEN NANO-GAPPED GOLD NANO PARTICLES

Research Project

Project/Area Number 17350038
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Analytical chemistry
Research InstitutionOSAKA PREFECTURE UNIVERSITY

Principal Investigator

NAGAOKA Tsutomu  OSAKA PREFECTURE UNIVERSITY, Organization for Industry, University and Government Cooperation, PROFESSOR, 産学官連携機構, 教授 (00172510)

Co-Investigator(Kenkyū-buntansha) MORI Nobuko  OSAKA PREFECTURE UNIVERSITY, GRADUATE SCHOOL OF SCIENCE, PROFESSOR, 理学系研究科, 教授 (90100221)
SHIIGI Hiroshi  OSAKA PREFECTURE UNIVERSITY, Organization for Industry, University and Government Cooperation, Instructor, 産学官連携機構, 助手 (70335769)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥10,700,000 (Direct Cost: ¥10,700,000)
Fiscal Year 2006: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2005: ¥7,900,000 (Direct Cost: ¥7,900,000)
Keywordsgold nanoparticle / nanoparticle-based array / nano-gap / DNA chip / SNIP diagnosis / conductivity measurement / DNA conductivity / dithiol / DNA / 非蛍光検出 / マルチアレイ / DNAセンサ / ナノテクノロジー / チオール / アレイ電極 / インピーダンス解析 / ブリッジ分子
Research Abstract

Recently a number of biomolecule based devices have been reported, and DAN sensing is one such vital example. Here, the fluorescence based detection is a common strategy, and, therefore, such systems rely on sophisticated optical components, which make the miniaturization of the system difficult and hamper cost effective analysis. However, a system based on molecular conductivity measurement can be a potential candidate to solve such problems. In this research project we have developed a DNA sensing device based on its conductivity using a nano-gap created between gold nanoparticles. A nano-gapped array consisting of 50-80 nm gold nanoparticles separated each by alkanedithiol was fabricated on and between interdigited Pt microelectrodes. Thiolated 12-mer single stranded DNA was immobilized on the array, and the current flowing through the array was monitored. On the addition of a 12-mer targeted DNA, an immediate change in the conductivity was found and was dependent on the number of mismatched bases in the hybridized DNA sample (SNIP detection). We also have found effective sensitivity enhancement by using 12-nm probes immobilizing DNA fragments. With this technique, we confirmed the detection limit of less than 500 fmol DNA.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (12 results)

All 2006 2005

All Journal Article (12 results)

  • [Journal Article] Electrical properties of a nanoparticle-networked film2006

    • Author(s)
      Y.Yamamoto, N.Yoshi, H.Shiigi, T.Nagaoka
    • Journal Title

      Solid State Ionics 177

      Pages: 2325-2328

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] One-step Preparation of Positively Charged Gold Nanoraspberry2006

    • Author(s)
      H.Shiigi, Y.Yamamoto, N.Yoshi, H.Nakao, T.Nagaoka
    • Journal Title

      Chem. Commun.

      Pages: 4288-4290

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 金ナノ粒子を標識として用いる電気的検出法の開発2006

    • Author(s)
      床波志保, 西出幸晃, 椎木 弘, 長岡 勉
    • Journal Title

      分析化学 55

      Pages: 919-923

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Fabrication of High Sensitive Sensor Electrode Using a Nano-gapped Gold Particle Film2006

    • Author(s)
      S.Tokonami, M.Iwamoto, K.Hashiba, H., T.Nagaoka
    • Journal Title

      Solid State Ionics 177

      Pages: 2317-2320

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] Development of the Electrical DNA Sensor2006

    • Author(s)
      S.Tokonami, H.Shiigi, T.Nagaoka
    • Journal Title

      ECS Transactions 7

      Pages: 81-86

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Journal Article] One-step Preparation of Positively Charged Gold Nanoraspberry2006

    • Author(s)
      H.Shiigi, Y.Yamamoto, N.Yoshi, H.Nakao, T.Nagaoka
    • Journal Title

      Chem.Commun

      Pages: 4288-4290

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Development of Electrical DNA Detection Method Using Gold Nanoparticle Marker2006

    • Author(s)
      S.Tokonami, K.Nishide, H.Shiigi, T.Nagaoka
    • Journal Title

      Bunseki Kagaku 55

      Pages: 919-923

    • NAID

      110004997503

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] One-Step Preparation of Positively Charged Gold Nanoraspberry2006

    • Author(s)
      H.Shiigi, Y.Yamamoto, N.Yoshi, H.Nakao, T.Nagaoka
    • Journal Title

      Chem. Commun.

      Pages: 4288-4290

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Electrical Properties of a Nanopaticle-networked Film2006

    • Author(s)
      Y.Yamamoto, N.Yoshi, H.Shiigi, Nagaoka
    • Journal Title

      Solid State Ionics 印刷中

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Characterization of Au Nanoparticle Film Electrodes Prepared on Polystyrene2005

    • Author(s)
      Y.Yamamoto, H.Shiigi, T.Nagaoka
    • Journal Title

      Electroanalysis 17

      Pages: 2224-2230

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Characterization of Au Nanoparticle Film Electrodes Prepared on Polystyrene2005

    • Author(s)
      Y.Yamamoto, H.Shiigi, T.Nagaoka
    • Journal Title

      Electrtoanalysis 17

      Pages: 2224-2230

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Molecular Recognition for Bile Acids Using a Molecularly Imprinted Overoxidized Polypyrrole Film2005

    • Author(s)
      H.Shiigi, D.Kijima, Y.Ikenaga, K.Hori, S.Fukazawa, T.Nagaoka
    • Journal Title

      J.Electrochem.Soc. 152

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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