Effects of compressive strains on electrical conductivities of a macroscale carbon nanotube block

Victor L. Pushparaj; Lijie Ci; Subbalakshmi Sreekala; Ashavani Kumar; Sai Kesapragada; Daniel Gall; Omkaram Nalamasu; Ajayan M. Pulickel; Jonghwan Suhr

doi:10.1063/1.2798599

Effects of compressive strains on electrical conductivities of a macroscale carbon nanotube block

Victor L. Pushparaj
, Lijie Ci
, Subbalakshmi Sreekala
, Ashavani Kumar
, Sai Kesapragada
, Daniel Gall
, Omkaram Nalamasu
, Ajayan M. Pulickel
, Jonghwan Suhr

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

60 Scopus citations

Abstract

A macroscopic block (∼9 mm3) of aligned carbon nanotubes (CNTs) was grown by chemical vapor deposition and its simultaneous electrical conductivity and compressive strain responses were measured parallel and perpendicular to the CNT alignment. The block exhibits elastic moduli of 0.9 and 1.6 MPa for compressive strain of <20% in parallel and perpendicular configurations, respectively. The electrical conductivity increases with increasing compressive strain in both configurations. The reversible electrical conductivity and compressive strain responses of block is attributed to elastic bending of CNTs. These excellent properties of CNT block can be used in compressive strain sensing applications.

Original language	English
Article number	153116
Journal	Applied Physics Letters
Volume	91
Issue number	15
DOIs	https://doi.org/10.1063/1.2798599
State	Published - 2007
Externally published	Yes

Access to Document

10.1063/1.2798599

Cite this

@article{35fdc04b885c49179eb69461d29a16a4,

title = "Effects of compressive strains on electrical conductivities of a macroscale carbon nanotube block",

abstract = "A macroscopic block (∼9 mm3) of aligned carbon nanotubes (CNTs) was grown by chemical vapor deposition and its simultaneous electrical conductivity and compressive strain responses were measured parallel and perpendicular to the CNT alignment. The block exhibits elastic moduli of 0.9 and 1.6 MPa for compressive strain of <20\% in parallel and perpendicular configurations, respectively. The electrical conductivity increases with increasing compressive strain in both configurations. The reversible electrical conductivity and compressive strain responses of block is attributed to elastic bending of CNTs. These excellent properties of CNT block can be used in compressive strain sensing applications.",

author = "Pushparaj, \{Victor L.\} and Lijie Ci and Subbalakshmi Sreekala and Ashavani Kumar and Sai Kesapragada and Daniel Gall and Omkaram Nalamasu and Pulickel, \{Ajayan M.\} and Jonghwan Suhr",

year = "2007",

doi = "10.1063/1.2798599",

language = "English",

volume = "91",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "15",

}

TY - JOUR

T1 - Effects of compressive strains on electrical conductivities of a macroscale carbon nanotube block

AU - Pushparaj, Victor L.

AU - Ci, Lijie

AU - Sreekala, Subbalakshmi

AU - Kumar, Ashavani

AU - Kesapragada, Sai

AU - Gall, Daniel

AU - Nalamasu, Omkaram

AU - Pulickel, Ajayan M.

AU - Suhr, Jonghwan

PY - 2007

Y1 - 2007

N2 - A macroscopic block (∼9 mm3) of aligned carbon nanotubes (CNTs) was grown by chemical vapor deposition and its simultaneous electrical conductivity and compressive strain responses were measured parallel and perpendicular to the CNT alignment. The block exhibits elastic moduli of 0.9 and 1.6 MPa for compressive strain of <20% in parallel and perpendicular configurations, respectively. The electrical conductivity increases with increasing compressive strain in both configurations. The reversible electrical conductivity and compressive strain responses of block is attributed to elastic bending of CNTs. These excellent properties of CNT block can be used in compressive strain sensing applications.

AB - A macroscopic block (∼9 mm3) of aligned carbon nanotubes (CNTs) was grown by chemical vapor deposition and its simultaneous electrical conductivity and compressive strain responses were measured parallel and perpendicular to the CNT alignment. The block exhibits elastic moduli of 0.9 and 1.6 MPa for compressive strain of <20% in parallel and perpendicular configurations, respectively. The electrical conductivity increases with increasing compressive strain in both configurations. The reversible electrical conductivity and compressive strain responses of block is attributed to elastic bending of CNTs. These excellent properties of CNT block can be used in compressive strain sensing applications.

UR - https://www.scopus.com/pages/publications/35248821081

U2 - 10.1063/1.2798599

DO - 10.1063/1.2798599

M3 - Article

AN - SCOPUS:35248821081

SN - 0003-6951

VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 15

M1 - 153116

ER -

Effects of compressive strains on electrical conductivities of a macroscale carbon nanotube block

Abstract

Access to Document

Other files and links

Fingerprint

Cite this