Reduced Joule heating in nanowires
Open accessAbstract
The temperature distribution in nanowires due to Joule heating is studied analytically using a continuum model and a Green’s function approach. We show that the temperatures reached in nanowires can be much lower than that predicted by bulk models of Joule heating, due to heat loss at the nanowire surface that is important at nanoscopic dimensions, even when the thermal conductivity of the environment is relatively low. In addition, we find that the maximum temperature in the nanowire scales weakly with length, in contrast to the bulk system. A simple criterion is presented to assess the importance of these effects. The results have implications for the experimental measurements of nanowire thermal properties, for thermoelectric applications, and for controlling thermal effects in nanowire electronic devices.
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Electrical resistance thermometry has been applied to measure the thermal conductivity of low-dimensional solids in both direct and modulated current configurations.
“Electrical resistance thermometry has been applied to measure the thermal conductivity of low dimensional solids (films, membranes, wires, and bridges) [13-15] in both direct [16-20] and modulated (1-omega, 2-omega, 3-omega) [21,22] current configurations.”
From Mean Free Path Effects on the Experimentally Measured Thermal Conductivity of Single-Crystal Silicon Microbridges (2013) · cites this paper as [15]
The paper’s discussion on p. 1 models the temperature distribution in a nanowire under a steady current and notes implications for thermal measurements. The passages searched for resistance thermometry and omega-modulated methods do not say that either configuration was applied to measure thermal conductivity. (LLM, conf=0.76)
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References 9 · Cited by 25
- Authors
- Léonard, F.
- Affiliations
- Sandia National Laboratories California (US)
- Corresponding author
- Léonard, François
- ORCID
- Léonard, François
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2011-03-07
- Volume
- 98
- Issue
- 10
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2063381199
- Cited by
- 25
- References
- 9
- Citations by year
- 2025: 1 · 2023: 1 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 1 · 2014: 3 · 2013: 3 · 2012: 2
- FWCI
- 1.26
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Applied Physics Letters (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- U.S. Department of Energy (DEAC01-94-AL85000)
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
- Physical Sciences › Engineering › Mechanics of Materials › Thermoelastic and Magnetoelastic Phenomena
- Physical Sciences › Engineering › Computational Mechanics › Heat Transfer and Numerical Methods
- Keywords
- Joule heating, nanowires, temperature distribution, surface heat loss, thermal conductivity, Green's function, continuum model, thermoelectric applications
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