A simple, efficient suspension of individual multi-walled carbon nanotubes based on a deep trench electrode.
We report the suspension of individual multi-walled Carbon nanotube (MWNT) from the bottom substrate using deep trench electrodes that were fabricated using optical lithography. During drying of the solution in dielectrophoretic assembly, the capillary force pulls the MWNT toward the bottom substrate, and it then remains as a deformed structure adhering to the bottom substrate after the solution has dried out. Small-diameter MWNTs cannot be suspended using thin electrodes with large gaps, but can be suspended using thicker electrodes. We present the statistical experimental results for successful suspension, as well as the feasible conditions for MWNT suspension based on a theoretical approach.
Han
Chang-Soo
CS
Nano-Mechanical Systems Research Center, KIMM, 171 Jang, Yousung, Daejeon, Korea.
Lee
Jong-Hong
JH
Seo
Hee Won
HW
Song
Jin-Won
JW
Kim
Ji-Eun
JE
Won
Muncheol
M
D003102:Colloids / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008839:Microelectrodes; D008968:Molecular Conformation; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
D003102:Colloids; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon