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Directly Metering Light Absorption and Heat Transfer in Single Nanowires Using Metal–Insulator Transition in VO 2
Author(s) -
Cheng Chun,
Fu Deyi,
Liu Kai,
Guo Hua,
Xu Shuigang,
Ryu SangGil,
Ho Otto,
Zhou Jian,
Fan Wen,
Bao Wei,
Salmeron Miquel,
Wang Ning,
Grigoropoulos Costas P.,
Wu Junqiao
Publication year - 2015
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201400483
Subject(s) - materials science , nanowire , absorbance , optoelectronics , thermal conductivity , absorption (acoustics) , heat transfer , nanostructure , thermal , single crystal , optics , nanotechnology , composite material , crystallography , physics , thermodynamics , meteorology , chemistry
A near‐field powermeter that directly quantifies light absorption and heat transfer in single nanowires is demonstrated. The mechanism is based on the metal–insulator transition in single‐crystal VO 2 microbeams, where the domain wall exhibits distinct optical contrast between the two phases. The powermeter is contactless and optically readable, allowing quick determination of optical absorbance, thermal conductivity, and contact thermal resistance of single nanostructures.