Graphene gas osmometers

Robin Dolleman; Santiago Cartamil Bueno; Herre van der Zant; Peter Steeneken

doi:10.1088/2053-1583/4/1/011002

Graphene gas osmometers

Robin Dolleman, Santiago Cartamil Bueno, Herre van der Zant, Peter Steeneken

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

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Abstract

We show that graphene membranes that separate two gases at identical pressure are deflected by osmotic pressure. The osmotic pressure is a consequence of differences in gas permeation rates into a few-layer graphene enclosed cavity. The deflection of the membrane is detected by measuring the tension-induced resonance frequency with an interferometric technique. Using a calibration measurement of the relation between resonance frequency and pressure, the time dependent osmotic pressure on the graphene is extracted. The time dependent osmotic pressure for different combinations of gases shows large differences that can be accounted for by a model based on the different gas permeation rates. In this way, a graphene-membrane based gas osmometer with a responsivity of ~60 kHz mbar–1 and nanoscale dimensions is demonstrated.

Original language	English
Article number	4
Pages (from-to)	011002 1-7
Number of pages	7
Journal	2D Materials
Volume	4
Issue number	1
DOIs	https://doi.org/10.1088/2053-1583/4/1/011002
Publication status	Published - 2016

Bibliographical note

Accepted Author Manuscript

Keywords

graphene, pressure sensor, gas sensor, osmosis, osmometer, selective permeation

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10.1088/2053-1583/4/1/011002

osmosis-mainAccepted author manuscript, 1.6 MB

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title = "Graphene gas osmometers",

abstract = "We show that graphene membranes that separate two gases at identical pressure are deflected by osmotic pressure. The osmotic pressure is a consequence of differences in gas permeation rates into a few-layer graphene enclosed cavity. The deflection of the membrane is detected by measuring the tension-induced resonance frequency with an interferometric technique. Using a calibration measurement of the relation between resonance frequency and pressure, the time dependent osmotic pressure on the graphene is extracted. The time dependent osmotic pressure for different combinations of gases shows large differences that can be accounted for by a model based on the different gas permeation rates. In this way, a graphene-membrane based gas osmometer with a responsivity of ~60 kHz mbar–1 and nanoscale dimensions is demonstrated.",

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AU - Dolleman, Robin

AU - Cartamil Bueno, Santiago

AU - van der Zant, Herre

AU - Steeneken, Peter

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PY - 2016

Y1 - 2016

N2 - We show that graphene membranes that separate two gases at identical pressure are deflected by osmotic pressure. The osmotic pressure is a consequence of differences in gas permeation rates into a few-layer graphene enclosed cavity. The deflection of the membrane is detected by measuring the tension-induced resonance frequency with an interferometric technique. Using a calibration measurement of the relation between resonance frequency and pressure, the time dependent osmotic pressure on the graphene is extracted. The time dependent osmotic pressure for different combinations of gases shows large differences that can be accounted for by a model based on the different gas permeation rates. In this way, a graphene-membrane based gas osmometer with a responsivity of ~60 kHz mbar–1 and nanoscale dimensions is demonstrated.

AB - We show that graphene membranes that separate two gases at identical pressure are deflected by osmotic pressure. The osmotic pressure is a consequence of differences in gas permeation rates into a few-layer graphene enclosed cavity. The deflection of the membrane is detected by measuring the tension-induced resonance frequency with an interferometric technique. Using a calibration measurement of the relation between resonance frequency and pressure, the time dependent osmotic pressure on the graphene is extracted. The time dependent osmotic pressure for different combinations of gases shows large differences that can be accounted for by a model based on the different gas permeation rates. In this way, a graphene-membrane based gas osmometer with a responsivity of ~60 kHz mbar–1 and nanoscale dimensions is demonstrated.

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Graphene gas osmometers

Abstract

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