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Novel nanoscience in superfluid helium
澳门赌城网址:2017-01-05   浏览次数:次

题目:Novel nanoscience in superfluid helium

主讲:Shengfu Yang

时间:2017年1月6日10:00

地点:材料楼304

讲座概况:

Helium droplets are clusters of helium whose size can vary over a huge range, spanning a few dozen to in excess of 1011helium atoms. They possess some unique properties that are important for fabrication of nanomaterials, including 1) a very low temperature (0.37 K), 2) superfluidity, 3) the ability to add materials sequentially, 4) the chemical inertness of helium.

Here we present the recent progress in the fabrication of novel nanoparticles and nanowires using superfluid helium droplets. A series of exploratory experiments will be reported, including the fabrication of single crystalline nanoparticles, core-shell nanoparticles and nanowires. A major breakthrough in nanomagnetics, namely, ferromagnetism in antiferromagnetic chromium, and ferromagnetic nanoparticles with the atomic magnetic moments, will also be highlighted.

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