scholarly journals Towards accurate models for amorphous GeTe: Crucial effect of dispersive van der Waals corrections on the structural properties involved in the phase-change mechanism

2017 ◽  
Vol 96 (18) ◽  
Author(s):  
M. Micoulaut ◽  
A. Piarristeguy ◽  
H. Flores-Ruiz ◽  
A. Pradel
Keyword(s):  
Phase Change ◽  
Structural Properties ◽  
Van Der Waals ◽  
Change Mechanism ◽  
Crucial Effect

scholarly journals Chalcogenide van der Waals superlattices: a case example of interfacial phase-change memory

2019 ◽  
Vol 91 (11) ◽  
pp. 1777-1786 ◽  
Author(s):  
Yuta Saito ◽  
Paul Fons ◽  
Kirill V. Mitrofanov ◽  
Kotaro Makino ◽  
Junji Tominaga ◽  
...  
Keyword(s):  
Transition Metal ◽  
Phase Change ◽  
Topological Insulators ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Phase Change Memory ◽  
Interfacial Phase ◽  
Metal Dichalcogenides ◽  
Superlattice Structures ◽  
Change Memory

Abstract 2D van der Waals chalcogenides such as topological insulators and transition-metal dichalcogenides and their heterostructures are now at the forefront of semiconductor research. In this paper, we discuss the fundamental features and advantages of van der Waals bonded superlattices over conventional superlattices made of 3D materials and describe in more detail one practical example, namely, interfacial phase change memory based on GeTe–Sb2Te3 superlattice structures.

Impact of Stoichiometry on the Structure of van der Waals Layered GeTe/Sb2 Te3 Superlattices Used in Interfacial Phase-Change Memory (iPCM) Devices

Small ◽  
2018 ◽  
Vol 14 (24) ◽  
pp. 1704514 ◽  
Author(s):  
Philippe Kowalczyk ◽  
Françoise Hippert ◽  
Nicolas Bernier ◽  
Cristian Mocuta ◽  
Chiara Sabbione ◽  
...  
Keyword(s):  
Phase Change ◽  
Van Der Waals ◽  
Phase Change Memory ◽  
Interfacial Phase ◽  
Change Memory

Self-tracking planar concentrator using a solar actuated phase-change mechanism

2013 ◽  
Author(s):  
Eric J. Tremblay ◽  
Volker Zagolla ◽  
Damien Loterie ◽  
Christophe Moser
Keyword(s):  
Phase Change ◽  
Change Mechanism

Evolutionary design of interfacial phase change van der Waals heterostructures

Nanoscale ◽  
2016 ◽  
Vol 8 (42) ◽  
pp. 18212-18220 ◽  
Author(s):  
Janne Kalikka ◽  
Xilin Zhou ◽  
Jitendra Behera ◽  
Giacomo Nannicini ◽  
Robert E. Simpson
Keyword(s):  
Phase Change ◽  
Van Der Waals ◽  
Evolutionary Design ◽  
Van Der Waals Heterostructures ◽  
Interfacial Phase

scholarly journals New Volume Change Mechanism Using Metal Bellows for Buoyancy Control Device of Underwater Robots

ISRN Robotics ◽  
2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Koji Shibuya ◽  
Sho Yoshii
Keyword(s):  
Phase Change ◽  
Volume Change ◽  
Control Method ◽  
Control Device ◽  
Paraffin Wax ◽  
Underwater Robots ◽  
Nichrome Wire ◽  
Change Mechanism ◽  
Metal Bellows ◽  
Buoyancy Control

We propose a new volume change mechanism using a metal bellows for a buoyancy control device of underwater robots and vehicles. Our proposed buoyancy control method utilizes the volume change caused by the phase-change of materials. We chose paraffin wax as a phase-change material because its volume change exceeds other candidates. Our proposed device consists of a metal bellows and an aluminum housing that contains paraffin wax and water. The paraffin wax is heated and cooled by a nichrome wire and a peltier device. We conducted two experiments and confirmed that the heat sink in the aluminum housing increases the speed of the buoyancy change and that the thickness of the air layer is crucial for efficient insulating. Then, we built a prototype robot with the four devices and confirmed that the robot can change its buoyancy up to its maximum value.

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