@article{d3c3eaf9456d45fcbf3001efba5713f3,
title = "Diameter-selective separation of double-walled carbon nanotubes",
abstract = "Here, we report a simple and effective way of separating double-walled carbon nanotubes as a function of their diameter using individually dispersed nanotube solutions with the aid of long and random single-stranded DNA. The subtle pH change in nanotube solutions gives rise to the preferential coagulation of large-diameter tubes and allows the easy preparation of small-diameter tubes. The stronger van der Waals forces between large-diameter tubes, combined with the decreased solubility of DNA in water at low pH, lead to the preferential agglomeration of large-diameter tubes.",
author = "Kim, {Jin Hee} and Masakazu Kataoka and Kim, {Yoong Ahm} and Daisuke Shimamoto and Hiroyuki Muramatsu and Takuya Hayashi and Morinobu Endo and Mauricio Terrones and Dresselhaus, {Mildred S.}",
note = "Funding Information: This work was supported in part by the CLUSTER project (the second stage) of the Ministry of Education, Culture, Sports, Science and Technology of Japan. Y.A.K. acknowledges support from a Grant-in-Aid from the Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant No. 20510096). M.S.D. acknowledges support from NSF Grant No. DMR 07–04197. We also thank CONACYT-Mexico for Grant Nos. 56787 (Laboratory for Nanoscience and Nanotechnology Research-LINAN), 45772 (M.T.), 41464 Inter American Collaboration (M.T.), and 2004–01–013 SALUD-CONACYT (M.T.).",
year = "2008",
doi = "10.1063/1.3039790",
language = "English (US)",
volume = "93",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "22",
}