03106nas a2200373 a 4500 20260818222941.0 151014s2012 th u m rtt 000 eng d .b12157235 AIT Thesis no.ISE-12-54 Kataguna Kanoknukulchai Studies on the synthesis of carbon nanotubes by chemical vapor deposition using a low vacuum process Pathum Thani : Asian Institute of Technology, 2012 1online resource (68 p.) : ill. Thesis ; no. ISE-12-54 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Nanotechnology, School of Engineering and Technology Thesis (M. Sc.) - Asian Institute of Technology, 2012 Carbon nanotubes (CNTs) have incomparable physical properties and their applicationsin various fields have been well established over the last two decades. The electronic properties of CNTs, however, significantly change depending on their chirality and the number of graphene walls. Therefore, first of all, theselective growth of graphene wallsis required, and ultimately, chiral selection technology should be established. In order to improve the selectivity and uniformity of CNTs, we have examined the growthof CNTs on aquartz substrate. Carbon nanotubes (CNTs) were fabricated by chemical vapor deposition (CVD) using a low vacuumprocess.Cobalt (Co) nanoparticles and molybdenum (Mo) sensitizerswere deposited as metal catalysts on quartz substratesby spray evaporation technique.Acetylene wasutilized asthe carbon feedstock and 5% H2/Ar was the carrier gas. The growth of CNTswas carried out at 650-750 °C for 30 minutes. In this work, optimum CNT synthesis conditions were determined for threereaction parametersnamely, concentration of catalyst solution, precursor flow rate,and reaction temperature. CNTsamples were characterized by scanning electron microscope (SEM) and transmission electron microscopy(TEM). Nanotubes, Carbon Dutta, Joydeep, Chairperson Hornyak, Louis, Examination Committee Mohammed, Waleed S., Examination Committee Royal Thai GovernmentFellowship, Scholarship Donor Asian Institute of Technology Fellowship, Scholarship Donor Asian Institute of Technology. Thesis ; no. ISE-12-54 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B03381 .b12157235 mnait z 240404 0 151014 m a z 0 000:001:PDF:b1215723:002294:0:0:0:0:0:0 Abstract--AIT Thesis no.ISE-12-54 n mnait 20 Barcode : 30050120845416 CREATED : 2015-10-14 RECORD # : i12860712 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 114365 114365 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.ISE-12-54 30050120845416 2026-08-18 22:29:41 1 2026-08-18 20