Stepwise current-driven release of attogram quantities of copper iodide encapsulated in carbon nanotubes.
Encapsulated nanograins of copper iodide have been sequentially discharged from individual carbon nanotubes. Using a high resolution electron microscope equipped with a two-terminal electrical measurements unit, it was possible to manipulate the filling contents with precisions of a few attograms at a time. Changes in electrical resistance and filling ratio were followed in tandem and in real-time. It is shown that the pulsed release of the halide is directly related to the overall conductance of the filled nanotube.
Costa
Pedro M F J
PM
Nanoscale Materials Center, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan. pedromfjcosta@ua.pt
Golberg
Dmitri
D
Mitome
Masanori
M
Hampel
Silke
S
Leonhardt
Albrecht
A
Buchner
Bernd
B
Bando
Yoshio
Y
D002244:Carbon / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D004337:Drug Carriers; D017097:Electric Impedance; D007454:Iodides / Q000737:chemistry*; D008854:Microscopy, Electron / Q000379:methods; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry*
D004337:Drug Carriers; D007454:Iodides; D037742:Nanotubes, Carbon; D002244:Carbon; D003300:Copper