Discrete angle rotations of Bi nanoparticles embedded in a Ga matrix |
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Authors: | Avraham Be’er Richard Kofman and Yossi Lereah |
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Institution: | 1.Department of Physical Electronics, Faculty of Engineering,Tel-Aviv University,Tel-Aviv,Israel;2.Laboratoire de Physique de la Matiere Condensee, Unite Associee au CNRS 6622,Universite de Nice,Nice Cedex 2,France |
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Abstract: | Spontaneous instabilities of nanoparticles are known to be influenced by the temperature, and strongly depend on the particle
size. However, it is not clear what is the role of the surrounding material that is in contact with the particle. Here we
report on the difference between spontaneous rotations of Bi nanoparticles embedded in amorphous SiO and those embedded in
liquid Ga. The phenomenon was studied quantitatively by time resolved transmission electron microscopy using Fourier Transform
analysis of highresolution electron microscopy images. While rotations of Bi nanoparticles embedded in amorphous SiO occur
by all angles, the rotations of Bi nanoparticles embedded in liquid Ga occur by discrete angles. Our results point quantitatively,
for the first time, to the role and importance of the contacting surrounding surface during the rotation of nanoparticles. |
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Keywords: | |
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