Abstract
We investigated the thermal conductivity of individual single-crystalline PbTe nanowires grown by a chemical vapor transport method. Thermal conductivities of PbTe nanowires 182-436 nm in diameter were measured using suspended microdevices. The thermal conductivity of a PbTe nanowire appeared to decrease with decreasing nanowire diameter and was measured to be 1.29 W/mK for a 182 nm nanowire at 300 K, which is about half of that of bulk PbTe. Our results indicate that phonon transport through a PbTe nanowire is effectively suppressed by the enhanced phonon boundary scattering due to size effects.
| Original language | English |
|---|---|
| Article number | 103101 |
| Journal | Applied Physics Letters |
| Volume | 96 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2010 Mar 26 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
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Size-dependent thermal conductivity of individual single-crystalline PbTe nanowires. / Roh, Jong Wook; Jang, So Young; Kang, Joohoon; Lee, Seunghyun; Noh, Jin Seo; Kim, Woochul; Park, Jeunghee; Lee, Wooyoung.
In: Applied Physics Letters, Vol. 96, No. 10, 103101, 26.03.2010.Research output: Contribution to journal › Article
TY - JOUR
T1 - Size-dependent thermal conductivity of individual single-crystalline PbTe nanowires
AU - Roh, Jong Wook
AU - Jang, So Young
AU - Kang, Joohoon
AU - Lee, Seunghyun
AU - Noh, Jin Seo
AU - Kim, Woochul
AU - Park, Jeunghee
AU - Lee, Wooyoung
PY - 2010/3/26
Y1 - 2010/3/26
N2 - We investigated the thermal conductivity of individual single-crystalline PbTe nanowires grown by a chemical vapor transport method. Thermal conductivities of PbTe nanowires 182-436 nm in diameter were measured using suspended microdevices. The thermal conductivity of a PbTe nanowire appeared to decrease with decreasing nanowire diameter and was measured to be 1.29 W/mK for a 182 nm nanowire at 300 K, which is about half of that of bulk PbTe. Our results indicate that phonon transport through a PbTe nanowire is effectively suppressed by the enhanced phonon boundary scattering due to size effects.
AB - We investigated the thermal conductivity of individual single-crystalline PbTe nanowires grown by a chemical vapor transport method. Thermal conductivities of PbTe nanowires 182-436 nm in diameter were measured using suspended microdevices. The thermal conductivity of a PbTe nanowire appeared to decrease with decreasing nanowire diameter and was measured to be 1.29 W/mK for a 182 nm nanowire at 300 K, which is about half of that of bulk PbTe. Our results indicate that phonon transport through a PbTe nanowire is effectively suppressed by the enhanced phonon boundary scattering due to size effects.
UR - http://www.scopus.com/inward/record.url?scp=77949717048&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77949717048&partnerID=8YFLogxK
U2 - 10.1063/1.3352049
DO - 10.1063/1.3352049
M3 - Article
AN - SCOPUS:77949717048
VL - 96
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 10
M1 - 103101
ER -