Pint, Cary L. and Xu, Ya-Qiong and Moghazy, Sharief and Cherukuri, Tonya and Alvarez, Noe T. and Haroz, Erik H. and Mahzooni, Salma and Doorn, Stephen K. and Kono, Junichiro and Pasquali, Matteo and Hauge, Robert H.. (2010) Dry Contact Transfer Printing of Aligned Carbon Nanotube Patterns and Characterization of Their Optical Properties for Diameter Distribution and Alignment. ACS Nano, 4 (2). p. 1131. ISSN 1936-0851Full text not available from this repository.
A scalable and facile approach is demonstrated where as-grown patterns of well-aligned structures composed of single-walled carbon nanotubes (SWNT) synthesized via water-assisted chemical vapor deposition (CVD) can be transferred, or printed, to any host surface in a single dry, room-temperature step using the growth substrate as a stamp. We demonstrate compatibility of this process with multiple transfers for large-scale device and specifically tailored pattern fabrication. Utilizing this transfer approach, anisotropic optical properties of the SWNT films are probed via polarized absorption, Raman, and photoluminescence spectroscopies. Using a simple model to describe optical transitions in the large SWNT species present in the aligned samples, polarized absorption data are demonstrated as an effective tool for accurate assignment of the diameter distribution from broad absorption features located in the infrared. This can be performed on either well-aligned samples or unaligned doped samples, allowing simple and rapid feedback of the SWNT diameter distribution that can be challenging and time-consuming to obtain in other optical methods. Furthermore, we discuss challenges in accurately characterizing alignment in structures of long versus short carbon nanotubes through optical techniques, where SWNT length makes a difference in the information obtained in such measurements. This work provides new insight to the efficient transfer and optical properties of an emerging class of long, large diameter SWNT species typically produced in the CVD process.
|InterNano Taxonomy:||Nanoscale Objects and Nanostructured Materials
Nanomanufacturing Characterization Techniques
|Collections:||Nanomanufacturing Research Collection|
|Depositing User:||Amulya Gullapalli|
|Date Deposited:||13 Jul 2011 16:44|
|Last Modified:||13 Jul 2011 16:44|
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