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Generation and size classification of single-walled carbon nanotube aerosol using atmospheric pressure pulsed laser ablation (AP-PLA) |
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| Authors: | Jiraporn Klanwan Takafumi Seto Takuma Furukawa Yoshio Otani Tawatchai Charinpanitkul Masamichi Kohno Makoto Hirasawa |
| Institution: | 1. Department of Chemical and Material Engineering, Kanazawa University, Kakuma-machi, 920-1192, Kanazawa, Japan 2. Center of Excellence in Particle Technology, Faculty of Engineering, Chulalongkorn University, Payathai Rd., Patumwan, 10330, Bangkok, Thailand 3. Department of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, 819-0395, Fukuoka, Japan 4. Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, 305-8564, Tsukuba, Japan |
| Abstract: | Gas suspended single-walled carbon nanotubes (SWCNTs) with single tube diameter smaller than 2 nm and length of longer than 500 nm were generated by simple and continuous system using laser ablation technique under atmospheric conditions. Graphite target containing 0.5 wt%-nickel and 0.5 wt%-cobalt was ablated by Nd:YAG laser in an electrical furnace under atmospheric pressure of nitrogen flow that allowed one step and continuous synthesis of the SWCNTs. Size distribution of the gas suspended SWCNTs aerosol was measured using size-classification by a differential mobility analyzer (DMA) coupled with a condensation particle counter (CPC) used as a detector. Characteristics of SWCNT aerosol generated under the different temperature were also investigated using scanning and transmission electron microscopes and Raman scattering. Mono-mobility SWCNT aerosol with mobility diameter of 100 and 200 nm was successfully prepared after the size separation using a DMA. |
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