equilibrium crystal shape
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Nanoscale ◽  
2021 ◽  
Author(s):  
Woohyun Hwang ◽  
Su-Hyun Yoo ◽  
Aloysius Soon ◽  
Woosun Jang

Nanocrystals of Group 5 tetradymites M2X3 (where M = Bi and Sb, X = Se and Te) are of high technological relevance in modern topological nanoelectronics. However, there is a...





2020 ◽  
Vol 178 ◽  
pp. 236-239 ◽  
Author(s):  
Wolfgang Rheinheimer ◽  
David Lowing ◽  
John E. Blendell


2019 ◽  
Vol 166 ◽  
pp. 28-36 ◽  
Author(s):  
Hadar Nahor ◽  
Yaron Kauffmann ◽  
Wayne D. Kaplan


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
In Won Yeu ◽  
Gyuseung Han ◽  
Jaehong Park ◽  
Cheol Seong Hwang ◽  
Jung-Hae Choi


2018 ◽  
Vol 458 ◽  
pp. 827-838 ◽  
Author(s):  
Qunfei Zhou ◽  
Xiaotao Liu ◽  
Tyler Maxwell ◽  
Bernard Vancil ◽  
T. John Balk ◽  
...  


2017 ◽  
Vol 127 ◽  
pp. 118-121 ◽  
Author(s):  
Wolfgang Rheinheimer ◽  
Fabian J. Altermann ◽  
Michael J. Hoffmann


2016 ◽  
Vol 123 ◽  
pp. 109-112 ◽  
Author(s):  
O. Kovalenko ◽  
F.O. Chikli ◽  
E. Rabkin


2015 ◽  
Vol 1 (9) ◽  
pp. e1500825 ◽  
Author(s):  
Takuya Takahashi ◽  
Haruka Ohuchi ◽  
Ryuji Nomura ◽  
Yuichi Okuda

Equilibrium crystal shape is the lowest energy crystal shape that is hardly realized in ordinary crystals because of their slow relaxation. 4He quantum crystals in a superfluid have been expected as unique exceptions that grow extremely fast at very low temperatures. However, on the ground, gravity considerably deforms the crystals and conceals the equilibrium crystal shape, and thus, gravity-free environment is needed to observe the equilibrium shape of 4He. We report the relaxation processes of macroscopic 4He crystals in a superfluid below 200 mK under zero gravity using a parabolic flight of a jet plane. When gravity was removed from a gravity-flattened 4He crystal, the crystal rapidly transformed into a shape with flat surfaces. Although the relaxation processes were highly dependent on the initial condition, the crystals relaxed to a nearly homothetic shape in the end, indicating that they were truly in an equilibrium shape minimizing the interfacial free energy. Thanks to the equilibrium shape, we were able to determine the Wulff’s origin and the size of the c-facet together with the vicinal surface profile next to the c-facet. The c-facet size was extremely small in the quantum crystals, and the facet-like flat surfaces were found to be the vicinal surfaces. At the same time, the interfacial free energy of the a-facet and s-facet was also obtained.



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