Development of microparticle counting sensor based on structural and spectroscopic properties of metal mesh device
| Autor: | Hiroyuki Shinto, Makoto Hasegawa, Yumiko Hirohashi, Yoshiko Miura, Hirokazu Seto, Seiji Kamba, Wataru Mitsukami, Ryosuke Matsushita, Atsushi Saiki |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.product_category Calibration curve General Chemical Engineering Infrared spectroscopy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Suspension (chemistry) chemistry.chemical_compound chemistry Mechanics of Materials Microfiber Transmittance Metal mesh Polystyrene Composite material Microparticle 0210 nano-technology business |
| Zdroj: | Advanced Powder Technology. 32:1920-1926 |
| ISSN: | 0921-8831 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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