Ultrasensitive quartz crystal microbalance with porous gold electrodes

Mitsunori Hieda; Rafael Garcia; Matt Dixon; Tad Daniel; David Allara; M. H.W. Chan

doi:10.1063/1.1643531

Ultrasensitive quartz crystal microbalance with porous gold electrodes

Mitsunori Hieda, Rafael Garcia, Matt Dixon, Tad Daniel, David Allara, M. H.W. Chan

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119 Scopus citations

Abstract

The sensitivity enhancement of the quartz crystal microbalance (QCM) was studied by replacing conventional electrode with porous gold (Au) electrodes. The QCM is a thin AT-cut quartz disk that oscillates in the shear mode when a voltage is applied across the electrodes. The total thickness of the porous gold electrodes was estimated to be 1.6 μm from the frequency decrease of 226 kHz upon sputtering silver (Ag)-Au. The sensitivity of the QCM was enhanced by a factor of 40 and by increasing the thickness of the electrodes, it is possible to increase the sensitivity by another factor of 2 or 3.

Original language	English (US)
Pages (from-to)	628-630
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	4
DOIs	https://doi.org/10.1063/1.1643531
State	Published - Jan 26 2004

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1643531

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title = "Ultrasensitive quartz crystal microbalance with porous gold electrodes",

abstract = "The sensitivity enhancement of the quartz crystal microbalance (QCM) was studied by replacing conventional electrode with porous gold (Au) electrodes. The QCM is a thin AT-cut quartz disk that oscillates in the shear mode when a voltage is applied across the electrodes. The total thickness of the porous gold electrodes was estimated to be 1.6 μm from the frequency decrease of 226 kHz upon sputtering silver (Ag)-Au. The sensitivity of the QCM was enhanced by a factor of 40 and by increasing the thickness of the electrodes, it is possible to increase the sensitivity by another factor of 2 or 3.",

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T1 - Ultrasensitive quartz crystal microbalance with porous gold electrodes

AU - Hieda, Mitsunori

AU - Garcia, Rafael

AU - Dixon, Matt

AU - Daniel, Tad

AU - Allara, David

AU - Chan, M. H.W.

PY - 2004/1/26

Y1 - 2004/1/26

N2 - The sensitivity enhancement of the quartz crystal microbalance (QCM) was studied by replacing conventional electrode with porous gold (Au) electrodes. The QCM is a thin AT-cut quartz disk that oscillates in the shear mode when a voltage is applied across the electrodes. The total thickness of the porous gold electrodes was estimated to be 1.6 μm from the frequency decrease of 226 kHz upon sputtering silver (Ag)-Au. The sensitivity of the QCM was enhanced by a factor of 40 and by increasing the thickness of the electrodes, it is possible to increase the sensitivity by another factor of 2 or 3.

AB - The sensitivity enhancement of the quartz crystal microbalance (QCM) was studied by replacing conventional electrode with porous gold (Au) electrodes. The QCM is a thin AT-cut quartz disk that oscillates in the shear mode when a voltage is applied across the electrodes. The total thickness of the porous gold electrodes was estimated to be 1.6 μm from the frequency decrease of 226 kHz upon sputtering silver (Ag)-Au. The sensitivity of the QCM was enhanced by a factor of 40 and by increasing the thickness of the electrodes, it is possible to increase the sensitivity by another factor of 2 or 3.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Ultrasensitive quartz crystal microbalance with porous gold electrodes

Abstract

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