Direct pressure sensing with carbon nanotubes grown in a micro-cavity

Ashok Chauhan; Alain Nogaret

doi:10.1063/1.4811166

Direct pressure sensing with carbon nanotubes grown in a micro-cavity

Ashok Chauhan, Alain Nogaret

Department of Physics

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

7 Citations (SciVal)

264 Downloads (Pure)

Abstract

We report on the growth of multiwall carbon nanotubes (CNTs) at the centre of a bow tie micro-cavity and describe the change in resistance of these CNTs under gas pressure loading (ΔR/R ≅ 16%/atm). By adapting the Euler-Bernoulli theory of beams to CNTs that bridge opposite walls of the cavity, we fit the piezoresistance curves and extract the Young's modulus, the piezoresistive constant, and the nanotube radius, for a range of CNT growth conditions. By detecting pressures as low as 0.1 atm, we demonstrate a membrane-less technology capable of sensing pressure with micron scale resolution.

Original language	English
Article number	233507
Number of pages	4
Journal	Applied Physics Letters
Volume	102
Issue number	23
DOIs	https://doi.org/10.1063/1.4811166
Publication status	Published - 12 Jun 2013

Access to Document

10.1063/1.4811166

published paper
Copyright (2013) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Chauhan, A & Nogaret, A 2013, 'Direct pressure sensing with carbon nanotubes grown in a micro-cavity' Applied Physics Letters, vol 102, 233507 and may be found at http://link.aip.org/link/doi/10.1063/1.4811166
Final published version, 2.47 MB

Cite this

@article{5358aa27e2f24f3ea36c240594f8e8d1,

title = "Direct pressure sensing with carbon nanotubes grown in a micro-cavity",

abstract = "We report on the growth of multiwall carbon nanotubes (CNTs) at the centre of a bow tie micro-cavity and describe the change in resistance of these CNTs under gas pressure loading (ΔR/R ≅ 16\%/atm). By adapting the Euler-Bernoulli theory of beams to CNTs that bridge opposite walls of the cavity, we fit the piezoresistance curves and extract the Young's modulus, the piezoresistive constant, and the nanotube radius, for a range of CNT growth conditions. By detecting pressures as low as 0.1 atm, we demonstrate a membrane-less technology capable of sensing pressure with micron scale resolution.",

author = "Ashok Chauhan and Alain Nogaret",

year = "2013",

month = jun,

day = "12",

doi = "10.1063/1.4811166",

language = "English",

volume = "102",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "23",

}

TY - JOUR

T1 - Direct pressure sensing with carbon nanotubes grown in a micro-cavity

AU - Chauhan, Ashok

AU - Nogaret, Alain

PY - 2013/6/12

Y1 - 2013/6/12

N2 - We report on the growth of multiwall carbon nanotubes (CNTs) at the centre of a bow tie micro-cavity and describe the change in resistance of these CNTs under gas pressure loading (ΔR/R ≅ 16%/atm). By adapting the Euler-Bernoulli theory of beams to CNTs that bridge opposite walls of the cavity, we fit the piezoresistance curves and extract the Young's modulus, the piezoresistive constant, and the nanotube radius, for a range of CNT growth conditions. By detecting pressures as low as 0.1 atm, we demonstrate a membrane-less technology capable of sensing pressure with micron scale resolution.

AB - We report on the growth of multiwall carbon nanotubes (CNTs) at the centre of a bow tie micro-cavity and describe the change in resistance of these CNTs under gas pressure loading (ΔR/R ≅ 16%/atm). By adapting the Euler-Bernoulli theory of beams to CNTs that bridge opposite walls of the cavity, we fit the piezoresistance curves and extract the Young's modulus, the piezoresistive constant, and the nanotube radius, for a range of CNT growth conditions. By detecting pressures as low as 0.1 atm, we demonstrate a membrane-less technology capable of sensing pressure with micron scale resolution.

UR - https://www.scopus.com/pages/publications/84879111231

UR - http://dx.doi.org/10.1063/1.4811166

U2 - 10.1063/1.4811166

DO - 10.1063/1.4811166

M3 - Letter

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

M1 - 233507

ER -

Direct pressure sensing with carbon nanotubes grown in a micro-cavity

Abstract

Access to Document

Other files and links

Fingerprint

Cite this