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SUMMARY:Synthesis of Vertically-Aligned Carbon Nanostructures via Pulsed Pl
 asma Enhanced CVD
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20181001T000000
UID:2026-04-24-03-16-37@natsci.colostate.edu
DTSTAMP:20260424T031637
Description:Literature Seminar Abstract\n\nVertically-aligned carbon nanost
 ructures (VACNs) have many potential applications resulting from their mec
 hanical and thermal stability\, high surface area\, high conductivity\, an
 d their ability to be chemically functionalized. Traditionally\, VACNs hav
 e been produced via thermal chemical vapor deposition (CVD) or arc dischar
 ge. Thermal CVD is energy intensive\, generally requiring processing tempe
 ratures above 600 °C.1 Plasma-enhanced CVD (PECVD) is a highly tunable sy
 nthetic method that can be employed to address this challenge by using pla
 sma processing to generate reactive species at lower processing temperatur
 es. Pulsed PECVD (PPECVD) is a power-modulated technique that can be used 
 to generate plasmas with different synthetic properties compared to PECVD.
  The formation of multi-walled carbon nanotubes (CNTs) and vertical graphe
 ne nanosheets (VGNs) will be discussed.2 CNTs are characterized using scan
 ning electron microscopy (SEM)\, transmission electron microscopy (TEM)\, 
 and Raman spectroscopy\, and optical emission spectroscopy provides inform
 ation on the plasma.2 In addition to the above techniques\, the compositio
 n and binding environments of the VGNs are assessed via X-ray photoelectro
 n spectroscopy (XPS). Overall\, PPECVD enhances the growth of VACNs when c
 ompared to PECVD. A critical analysis of results is offered with an emphas
 is on the potential use of PPECVD to produce VACNs for energy storage appl
 ications.\n\n1. Chen\, H.\; Roy\, A.\; Baek\, J.\; Zhu\, L.\; Qu\, J.\; Da
 i\, L. Controlled Growth and Modification of Vertically-Aligned Carbon Nan
 otubes for Multifunctional Applications. Mater. Sci. Eng. R 2010\, 70\, 63
 -91.\n2. Baro\, M.\; Gogoi\, D.\; Pal\, A. R.\; Adhikary\, N. C.\; Bailung
 \, H.\; Chutia\, J. Pulsed PECVD for Low-Temperature Growth of Vertically 
 Aligned Carbon Nanotubes. Chem. Vap. Deposition 2014\, 20\, 161–169. 4:0
 0 pm
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