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Study on high-speed size-selection technique for unstable nanoparticles using a novel tandem Differential Mobility Analyzer System

Research Project

Project/Area Number 15K13308
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Nanomaterials engineering
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

ORII TAKAAKI  国立研究開発法人理化学研究所, イノベーション推進センター, 上級研究員 (60321741)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsナノ粒子 / サイズ選別 / 電気移動度分析器 / 蒸発速度 / ケルビン効果 / 表面張力 / クラスター級ナノ粒子 / 蒸発過程 / サイズ選別法
Outline of Final Research Achievements

It is known that nanoparticles become unstable due to the Kelvin effect as the size decreases. Unstable nanoparticles can shrink only by the operation of sorting the size. We studied how much the nanoparticle becomes smaller at the evaporation rate by size sorting by the differential mobility analyzer (DMA). For the purpose, we developed a novel double-layer DMA and a tandem DMA system that can measure the evaporation rate occurring in less than 1 second. Both devices demonstrated satisfactory performance and made it possible to measure the fast evaporation rate of fatty alcohol nanoparticles.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (3 results)

All 2018 2017 Other

All Presentation (2 results) Remarks (1 results)

  • [Presentation] 平行平板型DMAを用いたタンデムシステムによる微小ナノ粒子の速い蒸発現象の観測2018

    • Author(s)
      折井孝彰
    • Organizer
      第35回エアロゾル科学・技術研究討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 2 層式電気移動度分析装置 (Double-layer Differential Mobility Analyzer:DLDMA)2017

    • Author(s)
      折井孝彰
    • Organizer
      日中大学フェア&フォーラムin CHINA 2017
    • Related Report
      2017 Annual Research Report
  • [Remarks] 次世代型DMA(微分型電気移動度分析器)の開発

    • URL

      http://www.riken.jp/outreach/ip/22938/

    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2019-03-29  

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