Surface acoustic wave-liquid drop interactions

Michael I. Newton; M. K. Banerjee; T. K H Starke; S. Michael Rowan; G. McHale

doi:10.1016/S0924-4247(98)00356-2

Surface acoustic wave-liquid drop interactions

Michael I. Newton, M. K. Banerjee, T. K H Starke, S. Michael Rowan, G. McHale

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

16 Citations (Scopus)

Abstract

Surface acoustic (Rayleigh) waves (SAWs) are highly sensitive to surface mass loading. Traditionally SAWs have been considered unsuitable for liquid sensing applications due to the large attenuation. However if the liquid volume is small, SAWs can provide a powerful tool for investigating the dynamics of viscous liquid spreading. In this work we report experiments in which small droplets of viscous oil were allowed to spread into the path of a SAW device. In all data the SAW signal initially increases while the liquid is still outside the SAW path. This is followed by a rapid attenuation in SAW amplitude as the liquid spreads across the SAW path. In data for larger volume drops the SAW amplitude is observed to pass through a minima. For drops of smaller volume, small features are observed superimposed on the overall attenuation.

Original language	English
Pages (from-to)	89-92
Number of pages	4
Journal	Sensors and Actuators, A: Physical
Volume	76
Issue number	1-3
DOIs	https://doi.org/10.1016/S0924-4247(98)00356-2
Publication status	Published - 30 Aug 1999
Externally published	Yes

Keywords

Surface acoustic wave (SAW)
Wetting
Liquid

Access to Document

10.1016/S0924-4247(98)00356-2

Cite this

@article{a14a21e7c5c94103a595c936163fc046,

title = "Surface acoustic wave-liquid drop interactions",

abstract = "Surface acoustic (Rayleigh) waves (SAWs) are highly sensitive to surface mass loading. Traditionally SAWs have been considered unsuitable for liquid sensing applications due to the large attenuation. However if the liquid volume is small, SAWs can provide a powerful tool for investigating the dynamics of viscous liquid spreading. In this work we report experiments in which small droplets of viscous oil were allowed to spread into the path of a SAW device. In all data the SAW signal initially increases while the liquid is still outside the SAW path. This is followed by a rapid attenuation in SAW amplitude as the liquid spreads across the SAW path. In data for larger volume drops the SAW amplitude is observed to pass through a minima. For drops of smaller volume, small features are observed superimposed on the overall attenuation.",

keywords = "Surface acoustic wave (SAW), Wetting, Liquid",

author = "Newton, {Michael I.} and Banerjee, {M. K.} and Starke, {T. K H} and Rowan, {S. Michael} and G. McHale",

year = "1999",

month = aug,

day = "30",

doi = "10.1016/S0924-4247(98)00356-2",

language = "English",

volume = "76",

pages = "89--92",

journal = "Sensors and Actuators, A: Physical",

issn = "0924-4247",

publisher = "Elsevier",

number = "1-3",

}

TY - JOUR

T1 - Surface acoustic wave-liquid drop interactions

AU - Newton, Michael I.

AU - Banerjee, M. K.

AU - Starke, T. K H

AU - Rowan, S. Michael

AU - McHale, G.

PY - 1999/8/30

Y1 - 1999/8/30

N2 - Surface acoustic (Rayleigh) waves (SAWs) are highly sensitive to surface mass loading. Traditionally SAWs have been considered unsuitable for liquid sensing applications due to the large attenuation. However if the liquid volume is small, SAWs can provide a powerful tool for investigating the dynamics of viscous liquid spreading. In this work we report experiments in which small droplets of viscous oil were allowed to spread into the path of a SAW device. In all data the SAW signal initially increases while the liquid is still outside the SAW path. This is followed by a rapid attenuation in SAW amplitude as the liquid spreads across the SAW path. In data for larger volume drops the SAW amplitude is observed to pass through a minima. For drops of smaller volume, small features are observed superimposed on the overall attenuation.

AB - Surface acoustic (Rayleigh) waves (SAWs) are highly sensitive to surface mass loading. Traditionally SAWs have been considered unsuitable for liquid sensing applications due to the large attenuation. However if the liquid volume is small, SAWs can provide a powerful tool for investigating the dynamics of viscous liquid spreading. In this work we report experiments in which small droplets of viscous oil were allowed to spread into the path of a SAW device. In all data the SAW signal initially increases while the liquid is still outside the SAW path. This is followed by a rapid attenuation in SAW amplitude as the liquid spreads across the SAW path. In data for larger volume drops the SAW amplitude is observed to pass through a minima. For drops of smaller volume, small features are observed superimposed on the overall attenuation.

KW - Surface acoustic wave (SAW)

KW - Wetting

KW - Liquid

UR - http://www.scopus.com/inward/record.url?scp=0343932607&partnerID=8YFLogxK

U2 - 10.1016/S0924-4247(98)00356-2

DO - 10.1016/S0924-4247(98)00356-2

M3 - Article

AN - SCOPUS:0343932607

SN - 0924-4247

VL - 76

SP - 89

EP - 92

JO - Sensors and Actuators, A: Physical

JF - Sensors and Actuators, A: Physical

IS - 1-3

ER -

Surface acoustic wave-liquid drop interactions

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this