Dispersion and current-voltage characteristics of helical polyacetylene single fibers.
To study the transport properties of individual helical polyacetylene (PA) fibers, we developed a method to extract a single fiber from tightly entangled ropes of helical PA bulk film. After a few minutes of sonication of a piece of helical PA bulk film in an organic solution containing surfactant, a droplet of solution is deposited on the pre-pattened electrode under argon atmosphere. AFM images show that extracted helical PA fibers are typically 10 mum in length and 100-200 nm in diameter. We found that the helicity of bulk materials is conserved. We present the temperature dependencies of current-voltage characteristics of individual helical PA fibers doped with iodine.
Lee
Hyun J
HJ
School of Physics and Nano Systems Institute-National Core Research Center, Seoul National University, Seoul, 151-747, Korea.
Jin
Zhao X
ZX
Aleshin
Andrey N
AN
Lee
Ju Y
JY
Goh
Mun J
MJ
Akagi
Kazuo
K
Kim
Young S
YS
Kim
Dong W
DW
Park
Yung W
YW