Proton irradiation effects on thermal transport in individual single-crystalline Bi nanowires

Jong Wook Roh; Dai Ho Ko; Joohoon Kang; Min Kyung Lee; Joo Hee Lee; Cheol Woo Lee; Kyu Hyoung Lee; Jin Seo Noh; Wooyoung Lee

doi:10.1002/pssa.201228734

Proton irradiation effects on thermal transport in individual single-crystalline Bi nanowires

Jong Wook Roh, Dai Ho Ko, Joohoon Kang, Min Kyung Lee, Joo Hee Lee, Cheol Woo Lee, Kyu Hyoung Lee, Jin Seo Noh, Wooyoung Lee

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We investigated the proton irradiation effect of thermal conductivities for individual single-crystalline Bi nanowires grown by the on-film formation of nanowires (ON-OFF). The thermal conductivities of Bi nanowires with diameter of 154 and 112 nm were measured using suspended devices before and after proton irradiation, respectively. It was founded thermal conductivities of Bi nanowires appreciably decrease after proton irradiation, which was caused by the destruction of single-crystallinity due to the high-energy proton impingement. This result indicates the defects of Bi nanowires created by proton drastically limit the mean free paths of phonons, resulting in the change of thermal transport of Bi nanowires.

Original language	English
Pages (from-to)	1438-1441
Number of pages	4
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	210
Issue number	7
DOIs	https://doi.org/10.1002/pssa.201228734
State	Published - Jul 2013

Keywords

bismuth
MEMS
nanowires
proton irradiation
thermal conductivity

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title = "Proton irradiation effects on thermal transport in individual single-crystalline Bi nanowires",

abstract = "We investigated the proton irradiation effect of thermal conductivities for individual single-crystalline Bi nanowires grown by the on-film formation of nanowires (ON-OFF). The thermal conductivities of Bi nanowires with diameter of 154 and 112 nm were measured using suspended devices before and after proton irradiation, respectively. It was founded thermal conductivities of Bi nanowires appreciably decrease after proton irradiation, which was caused by the destruction of single-crystallinity due to the high-energy proton impingement. This result indicates the defects of Bi nanowires created by proton drastically limit the mean free paths of phonons, resulting in the change of thermal transport of Bi nanowires.",

keywords = "bismuth, MEMS, nanowires, proton irradiation, thermal conductivity",

author = "Roh, {Jong Wook} and Ko, {Dai Ho} and Joohoon Kang and Lee, {Min Kyung} and Lee, {Joo Hee} and Lee, {Cheol Woo} and Lee, {Kyu Hyoung} and Noh, {Jin Seo} and Wooyoung Lee",

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doi = "10.1002/pssa.201228734",

language = "English",

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T1 - Proton irradiation effects on thermal transport in individual single-crystalline Bi nanowires

AU - Roh, Jong Wook

AU - Ko, Dai Ho

AU - Kang, Joohoon

AU - Lee, Min Kyung

AU - Lee, Joo Hee

AU - Lee, Cheol Woo

AU - Lee, Kyu Hyoung

AU - Noh, Jin Seo

AU - Lee, Wooyoung

PY - 2013/7

Y1 - 2013/7

N2 - We investigated the proton irradiation effect of thermal conductivities for individual single-crystalline Bi nanowires grown by the on-film formation of nanowires (ON-OFF). The thermal conductivities of Bi nanowires with diameter of 154 and 112 nm were measured using suspended devices before and after proton irradiation, respectively. It was founded thermal conductivities of Bi nanowires appreciably decrease after proton irradiation, which was caused by the destruction of single-crystallinity due to the high-energy proton impingement. This result indicates the defects of Bi nanowires created by proton drastically limit the mean free paths of phonons, resulting in the change of thermal transport of Bi nanowires.

AB - We investigated the proton irradiation effect of thermal conductivities for individual single-crystalline Bi nanowires grown by the on-film formation of nanowires (ON-OFF). The thermal conductivities of Bi nanowires with diameter of 154 and 112 nm were measured using suspended devices before and after proton irradiation, respectively. It was founded thermal conductivities of Bi nanowires appreciably decrease after proton irradiation, which was caused by the destruction of single-crystallinity due to the high-energy proton impingement. This result indicates the defects of Bi nanowires created by proton drastically limit the mean free paths of phonons, resulting in the change of thermal transport of Bi nanowires.

KW - bismuth

KW - MEMS

KW - nanowires

KW - proton irradiation

KW - thermal conductivity

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U2 - 10.1002/pssa.201228734

DO - 10.1002/pssa.201228734

M3 - Article

AN - SCOPUS:84881390885

SN - 1862-6300

VL - 210

SP - 1438

EP - 1441

JO - Physica Status Solidi (A) Applications and Materials Science

JF - Physica Status Solidi (A) Applications and Materials Science

IS - 7

ER -

Proton irradiation effects on thermal transport in individual single-crystalline Bi nanowires

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