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

H. Zou; Y. Li; S. Smith; A. S. 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, S. Smith, A. S. Bunting, A. J. Walton, J. G. Terry

^*Corresponding author for this work

School of Physics and Astronomy

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

3 Citations (Scopus)

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. 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	ICMTS 2012 - 2012 IEEE International Conference on Microelectronic Test Structures
Pages	61-65
Number of pages	5
DOIs	https://doi.org/10.1109/ICMTS.2012.6190614
Publication status	Published - 24 May 2012
Event	2012 IEEE International Conference on Microelectronic Test Structures, ICMTS 2012 - San Diego, CA, United States Duration: 20 Mar 2012 → 22 Mar 2012

Conference

Conference	2012 IEEE International Conference on Microelectronic Test Structures, ICMTS 2012
Country/Territory	United States
City	San Diego, CA
Period	20/03/12 → 22/03/12

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10.1109/ICMTS.2012.6190614

Cite this

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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. 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.",

author = "H. Zou and Y. Li and S. Smith and Bunting, {A. S.} and Walton, {A. J.} and Terry, {J. G.}",

year = "2012",

month = may,

day = "24",

doi = "10.1109/ICMTS.2012.6190614",

language = "English",

isbn = "9781467310284",

pages = "61--65",

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

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

}

Zou, H, Li, Y, Smith, S, Bunting, AS, Walton, AJ & Terry, JG 2012, Modification and characterisation of material hydrophobicity for surface acoustic wave driven microfluidics. in ICMTS 2012 - 2012 IEEE International Conference on Microelectronic Test Structures., 6190614, pp. 61-65, 2012 IEEE International Conference on Microelectronic Test Structures, ICMTS 2012, San Diego, CA, United States, 20/03/12. https://doi.org/10.1109/ICMTS.2012.6190614

TY - GEN

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

AU - Zou, H.

AU - Li, Y.

AU - Smith, S.

AU - Bunting, A. S.

AU - Walton, A. J.

AU - Terry, J. G.

PY - 2012/5/24

Y1 - 2012/5/24

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. 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. 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.

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AN - SCOPUS:84862107003

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BT - ICMTS 2012 - 2012 IEEE International Conference on Microelectronic Test Structures

T2 - 2012 IEEE International Conference on Microelectronic Test Structures, ICMTS 2012

Y2 - 20 March 2012 through 22 March 2012

ER -

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

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