Study on diffusion process of nanoparticles in a PDMS layer using SPT technique

Ryo Iwao, yu Matsuda, Hiroki Yamaguchi, Tomohide Niimi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Brownian motions of ZnS-AgInS2 (ZAIS) nanoparticles in a poly(dimethylsiloxane) (PDMS) layer were observed using the single-particle tracking (SPT) technique. The positions of each nanoparticle can be detected with spatial resolution of O(10 nm), and reflect the environment near each nanoparticles; thus, SPT can obtain information on the nanoscale structure or the spatial heterogeneity of the medium. In this study, ZAIS nanoparticles were illuminated by an excitation laser, and the emission of the nanoparticle was taken by using an EM-CCD camera. We analyzed each motion of the nanoparticle in the PDMS layer under two conditions: before and after adding a curing agent. The histograms of the diffusion coefficients had single peak for all of the particles in the layer before adding the curing agent and some particles in the layer after adding the one. On the other hand, the histogram of the other particles had two peaks. This indicates these particles diffused in the heterogeneous layer, showing spatial heterogeneous curing process in the layer.

Original languageEnglish
Title of host publication2015 International Symposium on Micro-NanoMechatronics and Human Science, MHS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479966783
DOIs
Publication statusPublished - 2016 Mar 21
Externally publishedYes
EventInternational Symposium on Micro-NanoMechatronics and Human Science, MHS 2015 - Nagoya, Japan
Duration: 2015 Nov 232015 Nov 25

Other

OtherInternational Symposium on Micro-NanoMechatronics and Human Science, MHS 2015
CountryJapan
CityNagoya
Period15/11/2315/11/25

ASJC Scopus subject areas

  • Biomedical Engineering
  • Electrical and Electronic Engineering
  • Biotechnology
  • Education

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  • Cite this

    Iwao, R., Matsuda, Y., Yamaguchi, H., & Niimi, T. (2016). Study on diffusion process of nanoparticles in a PDMS layer using SPT technique. In 2015 International Symposium on Micro-NanoMechatronics and Human Science, MHS 2015 [7438256] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MHS.2015.7438256