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A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)

The combination of the new perturbed spiral channel and a slanted gold interfingered transducer (IDT) is designed to achieve precise dynamic separation of target particles (20 μm). The offset micropillar array solves the defect that the high-width flow (avoiding the occurrence of channel blockage) c...

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Detalles Bibliográficos
Autores principales: Ji, Miaomiao, Liu, Yukai, Duan, Junping, Zang, Wenxuan, Wang, Yongsheng, Qu, Zeng, Zhang, Binzhen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9138558/
https://www.ncbi.nlm.nih.gov/pubmed/35624627
http://dx.doi.org/10.3390/bios12050325
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author Ji, Miaomiao
Liu, Yukai
Duan, Junping
Zang, Wenxuan
Wang, Yongsheng
Qu, Zeng
Zhang, Binzhen
author_facet Ji, Miaomiao
Liu, Yukai
Duan, Junping
Zang, Wenxuan
Wang, Yongsheng
Qu, Zeng
Zhang, Binzhen
author_sort Ji, Miaomiao
collection PubMed
description The combination of the new perturbed spiral channel and a slanted gold interfingered transducer (IDT) is designed to achieve precise dynamic separation of target particles (20 μm). The offset micropillar array solves the defect that the high-width flow (avoiding the occurrence of channel blockage) channel cannot realize the focusing of small particles (5 μm, 10 μm). The relationship between the maximum design gap of the micropillar (Smax) and the particle radius (a) is given: Smax = 4a, which not only ensures that small particles will not pass through the micropillar gap, but also is compatible with the appropriate flow rates. A non-offset micropillar array was used to remove 20 μm particles in the corner area. The innovation of a spiral channel structure greatly improves the separation efficiency and purity of the separation chip. The separation chip designed by us achieves deflection separation of 20 μm particles at 24.95–41.58 MHz (κ = 1.09–1.81), at a flow rate of 1.2 mL per hour. When f = 33.7 MHz (κ = 1.47), the transverse migration distance of 20 μm particles is the smallest, and the separation purity and efficiency are as high as 92% and 100%, respectively.
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spelling pubmed-91385582022-05-28 A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW) Ji, Miaomiao Liu, Yukai Duan, Junping Zang, Wenxuan Wang, Yongsheng Qu, Zeng Zhang, Binzhen Biosensors (Basel) Article The combination of the new perturbed spiral channel and a slanted gold interfingered transducer (IDT) is designed to achieve precise dynamic separation of target particles (20 μm). The offset micropillar array solves the defect that the high-width flow (avoiding the occurrence of channel blockage) channel cannot realize the focusing of small particles (5 μm, 10 μm). The relationship between the maximum design gap of the micropillar (Smax) and the particle radius (a) is given: Smax = 4a, which not only ensures that small particles will not pass through the micropillar gap, but also is compatible with the appropriate flow rates. A non-offset micropillar array was used to remove 20 μm particles in the corner area. The innovation of a spiral channel structure greatly improves the separation efficiency and purity of the separation chip. The separation chip designed by us achieves deflection separation of 20 μm particles at 24.95–41.58 MHz (κ = 1.09–1.81), at a flow rate of 1.2 mL per hour. When f = 33.7 MHz (κ = 1.47), the transverse migration distance of 20 μm particles is the smallest, and the separation purity and efficiency are as high as 92% and 100%, respectively. MDPI 2022-05-11 /pmc/articles/PMC9138558/ /pubmed/35624627 http://dx.doi.org/10.3390/bios12050325 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ji, Miaomiao
Liu, Yukai
Duan, Junping
Zang, Wenxuan
Wang, Yongsheng
Qu, Zeng
Zhang, Binzhen
A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)
title A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)
title_full A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)
title_fullStr A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)
title_full_unstemmed A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)
title_short A Novel Perturbed Spiral Sheathless Chip for Particle Separation Based on Traveling Surface Acoustic Waves (TSAW)
title_sort novel perturbed spiral sheathless chip for particle separation based on traveling surface acoustic waves (tsaw)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9138558/
https://www.ncbi.nlm.nih.gov/pubmed/35624627
http://dx.doi.org/10.3390/bios12050325
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