The thermal conductivities of individual single crystalline intrinsic Si nanowires with diameters of 22, 37, 56, and 115 nm were measured using a microfabricated suspended device over a temperature range of 20–320 K. Although the nanowires had well-defined crystalline order, the thermal conductivity observed was more than two orders of magnitude lower than the bulk value. The strong diameter dependence of thermal conductivity in nanowires was ascribed to the increased phonon-boundary scattering and possible phonon spectrum modification.
REFERENCES
1.
P. G.
Collins
, H.
Bando
, and A.
Zettl
, Nanotechnology
9
, 153
(1998
).2.
3.
M. S.
Dresselhaus
, Y.-M.
Lin
, S. B.
Cronin
, O.
Rabin
, M. R.
Black
, G.
Dresselhaus
, and T.
Koga
, Semicond. Semimetals
71
, 1
(2001
).4.
5.
K.
Schwab
, E. A.
Henriksen
, J. M.
Worlock
, and M. L.
Roukes
, Nature (London)
404
, 974
(2000
).6.
J.
Hone
, C.
Whitney
, C.
Piskoti
, and A.
Zettl
, Phys. Rev. B
59
, 2514
(1999
).7.
8.
A.
Khitun
, A.
Balandin
, and K. L.
Wang
, Superlattices Microstruct.
26
, 181
(1999
).9.
10.
D. G.
Cahill
, W. K.
Ford
, K. E.
Goodson
, G. D.
Mahan
, A.
Majumdar
, H. J.
Maris
, R.
Merlin
, and S. R.
Phillpot
, J. Appl. Phys.
93
, 793
(2003
).11.
Y.
Wu
, H.
Yan
, M.
Huang
, B.
Messer
, J. H.
Song
, and P.
Yang
, Chem.-Eur. J.
8
, 1260
(2002
).12.
P.
Kim
, L.
Shi
, A.
Majumdar
, and P. L.
McEuen
, Phys. Rev. Lett.
87
, 215502
(2001
).13.
L. Shi, D. Li, C. Yu, W. Jang, D. Kim, Z. Yao, P. Kim, and A. Majumdar, J. Heat Transfer 125, Oct. (to be published).
14.
Y. S. Touloukian, Thermophysical Properties of Matter (New York, 1970).
15.
16.
N.
Bannov
, V.
Aristov
, V.
Mitin
, and M. A.
Stroscio
, Phys. Rev. B
51
, 9930
(1995
).17.
A.
Svizhenko
, A.
Balandin
, S.
Bandyopadhyay
, and M. A.
Stroscio
, Phys. Rev. B
57
, 4687
(1998
).18.
19.
W.
Fon
, K. C.
Schwab
, J. M.
Worlock
, and M. L.
Roukes
, Phys. Rev. B
66
, 045302
(2002
).
This content is only available via PDF.
© 2003 American Institute of Physics.
2003
American Institute of Physics
You do not currently have access to this content.
