ZnO/glass thin film surface acoustic waves for efficient digital acoustofluidics and active surface cleaning

Hui Ling Ong; Huafeng Pang; Jian Zhou; Ran Tao; Prashant Agrawal; Hamdi Torun; Kunyapat Thummavichai; Jingting Luo; Kai Tao; Qiang Wu; Honglong Chang; Yong-Qing Fu

doi:10.1016/j.matchemphys.2022.126290

ZnO/glass thin film surface acoustic waves for efficient digital acoustofluidics and active surface cleaning

Hui Ling Ong, Huafeng Pang, Jian Zhou, Ran Tao, Prashant Agrawal, Hamdi Torun, Kunyapat Thummavichai, Jingting Luo, Kai Tao, Qiang Wu, Honglong Chang, Yong-Qing Fu^*

^*Corresponding author for this work

Mathematics, Physics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

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Abstract

Transparent microfluidic devices based on ZnO thin film/glass surface acoustic waves (SAWs) were explored for active surface cleaning based on its acoustofluidic performance. Acoustic waves generated from ZnO films on glass substrate were investigated and their acoustofluidic performance including transportation, jetting and nebulization were evaluated. Ash particles and starch solutions were used as model contaminants on the surface of the ZnO/glass SAW devices, and the mass loading of the contaminants on the device's surface was monitored using the SAW device with a high sensitivity of 280.0 ± 9.0 Hz/(μg/mm2). Active surface cleaning of the contaminants was demonstrated based on the transportation of water droplets, and optimized SAW powers were identified which caused strong interactions between water droplet and contaminants, thus effectively cleaning the surfaces. Studies of surface heating effects induced by SAWs showed that the cleaning efficiency was also influenced by the substrate temperature induced by SAW agitations.

Original language	English
Article number	126290
Number of pages	10
Journal	Materials Chemistry and Physics
Volume	287
Early online date	24 May 2022
DOIs	https://doi.org/10.1016/j.matchemphys.2022.126290
Publication status	Published - 1 Aug 2022

Keywords

Acoustofluidics
Active cleaning
Glass
SAW
Sensing
ZnO film

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10.1016/j.matchemphys.2022.126290

Final Manuscript Clean CopyAccepted author manuscript, 1.11 MBLicence: CC BY-NC-ND

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title = "ZnO/glass thin film surface acoustic waves for efficient digital acoustofluidics and active surface cleaning",

abstract = "Transparent microfluidic devices based on ZnO thin film/glass surface acoustic waves (SAWs) were explored for active surface cleaning based on its acoustofluidic performance. Acoustic waves generated from ZnO films on glass substrate were investigated and their acoustofluidic performance including transportation, jetting and nebulization were evaluated. Ash particles and starch solutions were used as model contaminants on the surface of the ZnO/glass SAW devices, and the mass loading of the contaminants on the device's surface was monitored using the SAW device with a high sensitivity of 280.0 ± 9.0 Hz/(μg/mm2). Active surface cleaning of the contaminants was demonstrated based on the transportation of water droplets, and optimized SAW powers were identified which caused strong interactions between water droplet and contaminants, thus effectively cleaning the surfaces. Studies of surface heating effects induced by SAWs showed that the cleaning efficiency was also influenced by the substrate temperature induced by SAW agitations.",

keywords = "Acoustofluidics, Active cleaning, Glass, SAW, Sensing, ZnO film",

author = "Ong, {Hui Ling} and Huafeng Pang and Jian Zhou and Ran Tao and Prashant Agrawal and Hamdi Torun and Kunyapat Thummavichai and Jingting Luo and Kai Tao and Qiang Wu and Honglong Chang and Yong-Qing Fu",

note = "Funding information: This work was financially supported by the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/P018998/1, Newton Mobility Grant (IE161019) through Royal Society, the National Natural Science Foundation of China (11504291,52075162, 12104320),Research Project in Fundamental and Application Fields of Guangdong Province (2020A1515110561),Shenzhen Science & Technology Project (RCBS20200714114918249), the Innovation Leading Program of New and High-tech Industry of Hunan Province (2020GK2015), the Natural Science Foundation of Hunan Province (2021JJ20018), and the Natural Science Foundation of Changsha (kq2007026).",

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doi = "10.1016/j.matchemphys.2022.126290",

language = "English",

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T1 - ZnO/glass thin film surface acoustic waves for efficient digital acoustofluidics and active surface cleaning

AU - Ong, Hui Ling

AU - Pang, Huafeng

AU - Zhou, Jian

AU - Tao, Ran

AU - Agrawal, Prashant

AU - Torun, Hamdi

AU - Thummavichai, Kunyapat

AU - Luo, Jingting

AU - Tao, Kai

AU - Wu, Qiang

AU - Chang, Honglong

AU - Fu, Yong-Qing

N1 - Funding information: This work was financially supported by the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/P018998/1, Newton Mobility Grant (IE161019) through Royal Society, the National Natural Science Foundation of China (11504291,52075162, 12104320),Research Project in Fundamental and Application Fields of Guangdong Province (2020A1515110561),Shenzhen Science & Technology Project (RCBS20200714114918249), the Innovation Leading Program of New and High-tech Industry of Hunan Province (2020GK2015), the Natural Science Foundation of Hunan Province (2021JJ20018), and the Natural Science Foundation of Changsha (kq2007026).

PY - 2022/8/1

Y1 - 2022/8/1

N2 - Transparent microfluidic devices based on ZnO thin film/glass surface acoustic waves (SAWs) were explored for active surface cleaning based on its acoustofluidic performance. Acoustic waves generated from ZnO films on glass substrate were investigated and their acoustofluidic performance including transportation, jetting and nebulization were evaluated. Ash particles and starch solutions were used as model contaminants on the surface of the ZnO/glass SAW devices, and the mass loading of the contaminants on the device's surface was monitored using the SAW device with a high sensitivity of 280.0 ± 9.0 Hz/(μg/mm2). Active surface cleaning of the contaminants was demonstrated based on the transportation of water droplets, and optimized SAW powers were identified which caused strong interactions between water droplet and contaminants, thus effectively cleaning the surfaces. Studies of surface heating effects induced by SAWs showed that the cleaning efficiency was also influenced by the substrate temperature induced by SAW agitations.

AB - Transparent microfluidic devices based on ZnO thin film/glass surface acoustic waves (SAWs) were explored for active surface cleaning based on its acoustofluidic performance. Acoustic waves generated from ZnO films on glass substrate were investigated and their acoustofluidic performance including transportation, jetting and nebulization were evaluated. Ash particles and starch solutions were used as model contaminants on the surface of the ZnO/glass SAW devices, and the mass loading of the contaminants on the device's surface was monitored using the SAW device with a high sensitivity of 280.0 ± 9.0 Hz/(μg/mm2). Active surface cleaning of the contaminants was demonstrated based on the transportation of water droplets, and optimized SAW powers were identified which caused strong interactions between water droplet and contaminants, thus effectively cleaning the surfaces. Studies of surface heating effects induced by SAWs showed that the cleaning efficiency was also influenced by the substrate temperature induced by SAW agitations.

KW - Acoustofluidics

KW - Active cleaning

KW - Glass

KW - SAW

KW - Sensing

KW - ZnO film

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U2 - 10.1016/j.matchemphys.2022.126290

DO - 10.1016/j.matchemphys.2022.126290

M3 - Article

SN - 0254-0584

VL - 287

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

M1 - 126290

ER -

ZnO/glass thin film surface acoustic waves for efficient digital acoustofluidics and active surface cleaning

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