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In situ TEM synthesis of Y-junction carbon nanotube by electromigration induced soldering

Sharma, Subash and Rosmi, Mohamad Saufi and Yaakob, Yazid and Mohd. Yusop, Mohd. Zamri and Kalita, Golap and Kitazawa, Masashi and Tanemura, Masaki (2018) In situ TEM synthesis of Y-junction carbon nanotube by electromigration induced soldering. Carbon, 132 . pp. 165-171. ISSN 0008-6223

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Official URL: http://dx.doi.org/10.1016/j.carbon.2018.02.037

Abstract

In this work, we utilize Joule heating to convert Pt-embedded amorphous carbon nanofiber (CNF) to multiwall carbon nanotube (CNT) in a transmission electron microscope (TEM). The transformation process of Pt-embedded amorphous CNF to multiwall CNT and nano-soldering process using Pt encapsulated CNT was investigated in TEM in detail. Molten Pt-encapsulated inside CNF and CNT always flowed towards the anode, proving electromigration to be the dominant force over thermal migration. Controllable electromigration of Pt was utilized to connect the Pt-included CNT to another CNT, thus forming a seamlessly welded CNT structure. Further, two separate CNF were brought together to form Y-contact which was transformed into Y-junction CNT structure by controlled electromigration of Pt. Changes in morphology and electrical property during CNT formation and nano-soldering were probed in real time with high resolution TEM. Our method provides a procedure for the position control synthesis of CNT and its nano-soldering which can be an important step for future development of a CNT based nanoelectrical circuit.

Item Type:Article
Uncontrolled Keywords:carbon nanotube, TEM
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:86121
Deposited By: Widya Wahid
Deposited On:30 Aug 2020 08:56
Last Modified:30 Aug 2020 08:56

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