What is it about?
Many modern electronic devices have extremely small feature sizes which impact how they heat up and the ability of heat to escape to nearby thermal management solutions. In some cases, the geometry of the device itself can hinder the ability of heat to leave via what amounts to a traffic jam of energy carriers. This work models that phenomenon, quantify its importance, and identify under what cases it may be a problem.
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Why is it important?
When electronics get hot, their performance and reliable can be greatly compromised. In addition, thermal challenges get worse as feature size gets smaller. By understanding small scale science such as this, scientists and engineers can search more intelligently for solutions to electronics heating at the nanoscale and, by doing so, help facilitate electronics that are faster, more reliable, and more energy efficient.
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This page is a summary of: Phonon thermal transport in silicon thin films with nanoscale constrictions and expansions, Journal of Applied Physics, January 2022, American Institute of Physics,
DOI: 10.1063/5.0063744.
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