TY - GEN
T1 - Laser-assisted selective removal of metallic carbon nanotubes
AU - Mahjouri-Samani, M.
AU - Zhou, Y. S.
AU - Xiong, W.
AU - Gao, Y.
AU - Mitchell, M.
AU - Lu, Y. F.
PY - 2009
Y1 - 2009
N2 - Carbon nanotubes (CNTs) are ideal building blocks for future nanoelectronic devices. CNTs of different electrical properties, metallic and semiconducting, find applications in different fields. However, current techniques for growing CNTs yield CNT mixtures of both electrical types, which have limited the applications of CNTs in electronics. In this study, selective removal of multi-walled and metallic single-walled carbon nanotubes (MWNTs and m-SWNTs) from CNT mixtures was realized using controlled laser irradiations. Due to their sub-wavelength size and free electrons, electron motions and eddy currents can be generated and significantly enhanced by strong electric fields in laser beams and optical near field effects, resulting in selective heating and removing process. With this approach, samples of pure s-SWNT arrays were obtained. This technique provides a laser-based single-step approach for selectively removing MWNTs and m-SWNTs from CNT mixtures.
AB - Carbon nanotubes (CNTs) are ideal building blocks for future nanoelectronic devices. CNTs of different electrical properties, metallic and semiconducting, find applications in different fields. However, current techniques for growing CNTs yield CNT mixtures of both electrical types, which have limited the applications of CNTs in electronics. In this study, selective removal of multi-walled and metallic single-walled carbon nanotubes (MWNTs and m-SWNTs) from CNT mixtures was realized using controlled laser irradiations. Due to their sub-wavelength size and free electrons, electron motions and eddy currents can be generated and significantly enhanced by strong electric fields in laser beams and optical near field effects, resulting in selective heating and removing process. With this approach, samples of pure s-SWNT arrays were obtained. This technique provides a laser-based single-step approach for selectively removing MWNTs and m-SWNTs from CNT mixtures.
UR - http://www.scopus.com/inward/record.url?scp=77953887799&partnerID=8YFLogxK
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U2 - 10.2351/1.5061502
DO - 10.2351/1.5061502
M3 - Conference contribution
AN - SCOPUS:77953887799
SN - 9780912035598
T3 - ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings
SP - 1377
EP - 1381
BT - ICALEO 2009 - 28th International Congress on Applications of Lasers and Electro-Optics, Congress Proceedings
PB - Laser Institute of America
T2 - 28th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2009
Y2 - 2 November 2009 through 5 November 2009
ER -