Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics

H. Zou; Y. Li; Stewart Smith; Andrew Bunting; A.J. Walton; J.G. Terry

doi:10.1109/ICMTS.2012.6190614

Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics

H. Zou, Y. Li, Stewart Smith, Andrew Bunting, A.J. Walton, J.G. Terry

School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Surface acoustic waves (SAW) generated in a piezoelectric substrate may be used to manipulate micro-scale droplets of liquid in a digital microfluidic system for lab-on-a-chip applications. The wettability of the surface over which a droplet is driven determines the ease and speed with which the droplet is propelled. This provides the opportunity to achieve fine control of SAW driven droplets simply by patterning of the surface into areas with different levels of wettability. This paper evaluates a number of different materials and surface preparation techniques and assesses their manufacturability and efficacy for this application. Test structures have been designed and developed to help optimise a fabrication process using the biocompatible polymer Parylene. Early results obtained using airflow as a driving force show that it is possible to manipulate droplets through direction changes of up to 60 #x00B0;. Additional work has been done using surface acoustic waves as the driving force to determine the extent to which droplets can be guided to desired locations.

Original language	English
Title of host publication	Microelectronic Test Structures (ICMTS), 2012 IEEE International Conference on
Pages	61 -65
Number of pages	5
DOIs	https://doi.org/10.1109/ICMTS.2012.6190614
Publication status	Published - 1 Mar 2012
Event	IEEE International Conference on Microelectronic Test Structures (ICMTS) - San Diego Duration: 20 Mar 2012 → 22 Mar 2012

Conference

Conference	IEEE International Conference on Microelectronic Test Structures (ICMTS)
City	San Diego
Period	20/03/12 → 22/03/12

Keywords / Materials (for Non-textual outputs)

microfluisics
propulsion
surface acoustic waves

Access to Document

10.1109/ICMTS.2012.6190614

Modification and Characterisation of Material Hydrophobicity for Surface Acoustic Wave Driven MicrofluidicsFinal published version, 979 KB

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6190614

Cite this

@inproceedings{fcafa802ee93473fa77f431ef2895a69,

title = "Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics",

abstract = "Surface acoustic waves (SAW) generated in a piezoelectric substrate may be used to manipulate micro-scale droplets of liquid in a digital microfluidic system for lab-on-a-chip applications. The wettability of the surface over which a droplet is driven determines the ease and speed with which the droplet is propelled. This provides the opportunity to achieve fine control of SAW driven droplets simply by patterning of the surface into areas with different levels of wettability. This paper evaluates a number of different materials and surface preparation techniques and assesses their manufacturability and efficacy for this application. Test structures have been designed and developed to help optimise a fabrication process using the biocompatible polymer Parylene. Early results obtained using airflow as a driving force show that it is possible to manipulate droplets through direction changes of up to 60 #x00B0;. Additional work has been done using surface acoustic waves as the driving force to determine the extent to which droplets can be guided to desired locations.",

keywords = "microfluisics, propulsion, surface acoustic waves",

author = "H. Zou and Y. Li and Stewart Smith and Andrew Bunting and A.J. Walton and J.G. Terry",

year = "2012",

month = mar,

day = "1",

doi = "10.1109/ICMTS.2012.6190614",

language = "English",

isbn = "978-1-4673-1027-7",

pages = "61 --65",

booktitle = "Microelectronic Test Structures (ICMTS), 2012 IEEE International Conference on",

note = "IEEE International Conference on Microelectronic Test Structures (ICMTS) ; Conference date: 20-03-2012 Through 22-03-2012",

}

Zou, H, Li, Y, Smith, S, Bunting, A, Walton, AJ & Terry, JG 2012, Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics. in Microelectronic Test Structures (ICMTS), 2012 IEEE International Conference on. pp. 61 -65, IEEE International Conference on Microelectronic Test Structures (ICMTS), San Diego, 20/03/12. https://doi.org/10.1109/ICMTS.2012.6190614

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T1 - Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics

AU - Zou, H.

AU - Li, Y.

AU - Smith, Stewart

AU - Bunting, Andrew

AU - Walton, A.J.

AU - Terry, J.G.

PY - 2012/3/1

Y1 - 2012/3/1

N2 - Surface acoustic waves (SAW) generated in a piezoelectric substrate may be used to manipulate micro-scale droplets of liquid in a digital microfluidic system for lab-on-a-chip applications. The wettability of the surface over which a droplet is driven determines the ease and speed with which the droplet is propelled. This provides the opportunity to achieve fine control of SAW driven droplets simply by patterning of the surface into areas with different levels of wettability. This paper evaluates a number of different materials and surface preparation techniques and assesses their manufacturability and efficacy for this application. Test structures have been designed and developed to help optimise a fabrication process using the biocompatible polymer Parylene. Early results obtained using airflow as a driving force show that it is possible to manipulate droplets through direction changes of up to 60 #x00B0;. Additional work has been done using surface acoustic waves as the driving force to determine the extent to which droplets can be guided to desired locations.

AB - Surface acoustic waves (SAW) generated in a piezoelectric substrate may be used to manipulate micro-scale droplets of liquid in a digital microfluidic system for lab-on-a-chip applications. The wettability of the surface over which a droplet is driven determines the ease and speed with which the droplet is propelled. This provides the opportunity to achieve fine control of SAW driven droplets simply by patterning of the surface into areas with different levels of wettability. This paper evaluates a number of different materials and surface preparation techniques and assesses their manufacturability and efficacy for this application. Test structures have been designed and developed to help optimise a fabrication process using the biocompatible polymer Parylene. Early results obtained using airflow as a driving force show that it is possible to manipulate droplets through direction changes of up to 60 #x00B0;. Additional work has been done using surface acoustic waves as the driving force to determine the extent to which droplets can be guided to desired locations.

KW - microfluisics

KW - propulsion

KW - surface acoustic waves

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M3 - Conference contribution

SN - 978-1-4673-1027-7

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BT - Microelectronic Test Structures (ICMTS), 2012 IEEE International Conference on

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Y2 - 20 March 2012 through 22 March 2012

ER -

Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics

Abstract

Conference

Keywords / Materials (for Non-textual outputs)

Access to Document

Other files and links

Fingerprint

SMART microsystems

RCUK Fellowship

Cite this

Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics

Abstract

Conference

Keywords / Materials (for Non-textual outputs)

Access to Document

Other files and links

Fingerprint

Projects

SMART microsystems

RCUK Fellowship

Cite this