Development of microparticle counting sensor based on structural and spectroscopic properties of metal mesh device

Hirokazu Seto, Atsushi Saiki, Ryosuke Matsushita, Wataru Mitsukami, Seiji Kamba, Makoto Hasegawa, Yoshiko Miura, Yumiko Hirohashi, Hiroyuki Shinto

研究成果: Contribution to journalArticle査読

抄録

A microparticle counter based on a metal mesh device was developed. The metal mesh device had a lattice-shaped structure with well-regulated holes of 1.8 μm. The collection percentages of differently sized microparticles using the metal mesh device were determined by flow cytometry. The cut-off point and hole size of the metal mesh device were identical. Polystyrene microparticles were detected from changes in the spectroscopic properties of the metal mesh device. When microparticles were trapped on the holes of the metal mesh device, the transmittance in the infrared spectra decreased. Microparticles smaller than the holes were not detected by the metal mesh device, whereas 2 and 3 μm microparticles were detected. Polystyrene and silica microparticles could be counted using the metal mesh device via calibration curves between the concentration of microparticles and the change level in the transmittance of the metal mesh device. The separation of microparticles from a mixture suspension using the metal mesh device was evaluated. Unlike a microfiber filter, only 2 μm microparticles were collected from coexisting 1 μm microparticles by the metal mesh device. Owing to its high separation ability, the metal mesh device selectively detected 2 μm microparticles in coexisting 10-equivalence 1 μm microparticles.

本文言語英語
ページ(範囲)1920-1926
ページ数7
ジャーナルAdvanced Powder Technology
32
6
DOI
出版ステータス出版済み - 6 2021

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • 材料力学

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