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説明:

We study the effects of temperature on the properties of thermal vibrations of individual LaB6 single-crystal nanowires inside a transmission electron microscope using a method which combines high spatial resolution, high temporal resolution, and in-situ temperature control. We find that the vibrations can be accurately modeled by classical formalisms, despite the small size of the resonator. We observe a vibration frequency decrease with temperature which enables us to measure the temperature coefficient of the Young’s modulus, finding a value of α_E≅-9×10^(-5) K^(-1) over the 300-700 K temperature range. We additionally introduce a method to precisely measure the vibration amplitude, which agrees well with values predicted by the Boltzmann equipartition theorem over the entire temperature range.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: thermal vibration, nanowire, transmission electron microscopy

刊行年月日: 2025-10-07

出版者: AIP Publishing

掲載誌:

• Journal of Applied Physics (ISSN: 00218979) vol. 138 issue. 13 134301

研究助成金:

• Japan Society for the Promotion of Science JP24K08253
• Japan Society for the Promotion of Science JP23H04874
• Japan Society for the Promotion of Science JP22H05145

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1063/5.0288200

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更新時刻: 2025-10-07 08:30:40 +0900

MDRでの公開時刻: 2025-10-07 08:17:01 +0900