Load dependent frictional response of vertically aligned single-walled carbon nanotube films

Andrew S. Westover; Junho Choi; Kehang Cui; Takumi Ishikawa; Taiki Inoue; Rong Xiang; Shohei Chiashi; Takahisa Kato; Shigeo Maruyama; Cary L. Pint

doi:10.1016/j.scriptamat.2016.07.032

Load dependent frictional response of vertically aligned single-walled carbon nanotube films

Andrew S. Westover, Junho Choi, Kehang Cui, Takumi Ishikawa, Taiki Inoue, Rong Xiang, Shohei Chiashi, Takahisa Kato, Shigeo Maruyama, Cary L. Pint

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

8 Scopus citations

Abstract

Here we use microscratch testing to demonstrate how a single-walled carbon nanotube (SWCNT) forest material can exhibit variable adhesion properties with solid surfaces ranging from negligible adhesion at low loading due to the normal alignment of SWCNTs to maximum adhesion at high loading that exploits the extraordinary sidewall adhesion of SWCNTs. This observation, which exhibits no analog in conventional bulk materials, is correlated to loading-induced structural modification of the low-density SWCNT-substrate interface morphology. This observation opens new pathways to use structural modification of low density materials to engineer and control a wide range of adhesion properties with solid surfaces.

Original language	English
Pages (from-to)	63-67
Number of pages	5
Journal	Scripta Materialia
Volume	125
DOIs	https://doi.org/10.1016/j.scriptamat.2016.07.032
State	Published - Dec 1 2016
Externally published	Yes

Funding

The authors thank Anna Douglas, Keith Share, and Landon Oakes for insightful discussions. This project was supported by the National Science Foundation East Asia and Pacific Summer Institute 2015 award number 1515541 , and the Japan Society for the Promotion of Science's summer program 2015 . A part of this work was financially supported by Grants-in-Aid for Scientific Research ( 25107002 , 15H05760 ) and IRENA Project by JST-EC DG RTD , Strategic International Collaborative Research Program , SICORP. C.L.P. acknowledges partial support for this work from the National Science Foundation grant CMMI 1400424 .

Funders	Funder number
JST-EC
National Science Foundation East Asia	1515541
National Science Foundation	CMMI 1400424
Japan Society for the Promotion of Science	15K17984, 15H05760, 26420135, 25107002, 26289024

Keywords

Adhesion
Friction
Low-density materials
Scratch test
Single walled carbon nanotubes

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10.1016/j.scriptamat.2016.07.032

Cite this

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title = "Load dependent frictional response of vertically aligned single-walled carbon nanotube films",

abstract = "Here we use microscratch testing to demonstrate how a single-walled carbon nanotube (SWCNT) forest material can exhibit variable adhesion properties with solid surfaces ranging from negligible adhesion at low loading due to the normal alignment of SWCNTs to maximum adhesion at high loading that exploits the extraordinary sidewall adhesion of SWCNTs. This observation, which exhibits no analog in conventional bulk materials, is correlated to loading-induced structural modification of the low-density SWCNT-substrate interface morphology. This observation opens new pathways to use structural modification of low density materials to engineer and control a wide range of adhesion properties with solid surfaces.",

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AU - Westover, Andrew S.

AU - Choi, Junho

AU - Cui, Kehang

AU - Ishikawa, Takumi

AU - Inoue, Taiki

AU - Xiang, Rong

AU - Chiashi, Shohei

AU - Kato, Takahisa

AU - Maruyama, Shigeo

AU - Pint, Cary L.

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N2 - Here we use microscratch testing to demonstrate how a single-walled carbon nanotube (SWCNT) forest material can exhibit variable adhesion properties with solid surfaces ranging from negligible adhesion at low loading due to the normal alignment of SWCNTs to maximum adhesion at high loading that exploits the extraordinary sidewall adhesion of SWCNTs. This observation, which exhibits no analog in conventional bulk materials, is correlated to loading-induced structural modification of the low-density SWCNT-substrate interface morphology. This observation opens new pathways to use structural modification of low density materials to engineer and control a wide range of adhesion properties with solid surfaces.

AB - Here we use microscratch testing to demonstrate how a single-walled carbon nanotube (SWCNT) forest material can exhibit variable adhesion properties with solid surfaces ranging from negligible adhesion at low loading due to the normal alignment of SWCNTs to maximum adhesion at high loading that exploits the extraordinary sidewall adhesion of SWCNTs. This observation, which exhibits no analog in conventional bulk materials, is correlated to loading-induced structural modification of the low-density SWCNT-substrate interface morphology. This observation opens new pathways to use structural modification of low density materials to engineer and control a wide range of adhesion properties with solid surfaces.

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Load dependent frictional response of vertically aligned single-walled carbon nanotube films

Abstract

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Keywords

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