Precise cutting of single-walled carbon nanotubes
Wang, Shiren; Liang, Zhiyong; Wang, Ben; Zhang, Chuck; Rahman, Zia; Wang, Shiren; High-Performance Materials Institute (HPMI), Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310-6046, USA; Liang, Zhiyong; High-Performance Materials Institute (HPMI), Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310-6046, USA ;; Wang, Ben; High-Performance Materials Institute (HPMI), Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310-6046, USA; Zhang, Chuck; High-Performance Materials Institute (HPMI), Department of Industrial and Manufacturing Engineering, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL 32310-6046, USA; Rahman, Zia; Materials Characterization Facility, AMPAC, University of Central Florida, 12443 Research Parkway, Suite 304, Orlando, FL 32826, USA
Журнал:
Nanotechnology
Дата:
2007-02-07
Аннотация:
We precisely cut single-walled carbon nanotubes (SWNTs) to create short nanotubes with controlled length and open ends using an ultra-microtome and magnetically aligned SWNT membranes. At −60 °C, multiple layers of SWNT membranes were stacked and frozen together, and then cut at lengths of 50 and 200 nm, respectively. Transmission electron microscopy (TEM) and Raman characterizations clearly indicated that nanotubes were mechanically chopped to create open ends without notable sidewall damage. Atomic force microscopy (AFM) characterization and statistical analysis showed that the length distributions of the cut SWNTs can be controlled. Short SWNTs are very promising for applications in biomolecular transportation, field emission, field effect transistor and nanocomposites.
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