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Detection of sub-atomic movement in nanostructures
Nanoscale Advances ( IF 4.7 ) Pub Date : 2021-2-25 , DOI: 10.1039/d0na01068e
Tongjun Liu 1 , Jun-Yu Ou 1 , Kevin F MacDonald 1 , Nikolay I Zheludev 1, 2
Affiliation  

Nanoscale objects move fast and oscillate billions of times per second. Such movements occur naturally in the form of thermal (Brownian) motion while stimulated movements underpin the functionality of nano-mechanical sensors and active nano-(electro/opto) mechanical devices. Here we introduce a methodology for detecting such movements, based on the spectral analysis of secondary electron emission from moving nanostructures, that is sensitive to displacements of sub-atomic amplitude. We demonstrate the detection of nanowire Brownian oscillations of ∼10 pm amplitude and hyperspectral mapping of stimulated oscillations of setae on the body of a common flea. The technique opens a range of opportunities for the study of dynamic processes in materials science, nanotechnology and biology.

中文翻译:

检测纳米结构中的亚原子运动

纳米级物体移动速度快,每秒振荡数十亿次。这种运动以热(布朗)运动的形式自然发生,而受激运动支持纳米机械传感器和有源纳米(电/光)机械设备的功能。在这里,我们介绍了一种检测这种运动的方法,该方法基于移动纳米结构的二次电子发射的光谱分析,它对亚原子幅度的位移敏感。我们展示了对约 10 pm 振幅的纳米线布朗振荡的检测和普通跳蚤身体上刚毛受激振荡的高光谱映射。该技术为研究材料科学、纳米技术和生物学中的动态过程提供了一系列机会。
更新日期:2021-02-25
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