scholarly journals Kosterlitz-Thouless-type caging-uncaging transition in a quasi-one-dimensional hard disk system

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
A. Huerta ◽  
T. Bryk ◽  
V. M. Pergamenshchik ◽  
A. Trokhymchuk
Keyword(s):  
Hard Disk ◽  
Disk System ◽  
One Dimensional

scholarly journals Collective Dynamics in Quasi-One-Dimensional Hard Disk System

2021 ◽  
Vol 9 ◽  
Author(s):  
Adrián Huerta ◽  
Taras Bryk ◽  
Victor M. Pergamenshchik ◽  
Andrij Trokhymchuk
Keyword(s):  
Hard Disk ◽  
Close Packing ◽  
Collective Excitations ◽  
Hard Disks ◽  
Disk System ◽  
Disk Diameter ◽  
One Dimensional ◽  
Collective Dynamics ◽  
Transverse Modes ◽  
2D Arrays

We present the results of molecular dynamic studies of collective dynamics in a system of hard disks confined to a narrow quasi-one-dimensional (quasi-1D) channel. The computer simulations have been performed for the specific channel width of 3/2 of disk diameter in which the disk arrangement at close packing resembles zigzag ordering characteristic of a vertically oriented two-dimensional (2D) triangular lattice. In such a quasi-1D system, which is intermediate between 1D and 2D arrays of hard disks, the transverse excitations obey very specific dispersion law typical of the usual optical transverse modes. This is in a sharp contrast both to the 1D case, where transverse excitations are not possible, and to the 2D case, where the regular shear waves with a propagation gap were observed. Other peculiarities of the dispersion of collective excitations as well as some results of disk structuring and thermodynamics of the quasi-1D hard disk system are presented and discussed for a range of hard disk densities typical for fluid and distorted crystal states.

Study of the hard-disk system at high densities: the fluid-hexatic phase transition

2018 ◽  
Vol 148 (23) ◽  
pp. 234502 ◽  
Author(s):  
Luis Mier-y-Terán ◽  
Brian Ignacio Machorro-Martínez ◽  
Gustavo A. Chapela ◽  
Fernando del Río
Keyword(s):  
Phase Transition ◽  
Hard Disk ◽  
Disk System ◽  
Hexatic Phase

scholarly journals Stochastic Geometry and Hard-Disk System

1973 ◽  
Vol 49 (3) ◽  
pp. 1044-1045
Author(s):  
Tohru Ogawa ◽  
Masaharu Tanemura
Keyword(s):  
Stochastic Geometry ◽  
Hard Disk ◽  
Disk System

Operational Shock Response of Ultrathin Hard Disk Drives

2014 ◽  
Author(s):  
Shengkai Yu ◽  
Jianqiang Mou ◽  
Wei Hua ◽  
Weidong Zhou ◽  
Chye Chin Tan
Keyword(s):  
Hard Disk Drives ◽  
Hard Disk ◽  
Element Model ◽  
System Level ◽  
Disk Drives ◽  
Disk System ◽  
Shock Response ◽  
Shock Simulation ◽  
Resistance Performance ◽  
Operational Shock

Operational shock is one of key challenges for designing the ultrathin mobile hard disk drives (HDDs) due to the reduced thickness of mechanical components and their stiffness. Some simplifications in the conventional methods for operational shock simulation are not valid. In this paper, a method for system level modelling and simulation of operational shock response of HDDs has been proposed by coupling the structural finite element model of the HDD and the air bearing model. The dynamic shock response of the head-disk system in a 5 mm ultrathin HDD design is investigated. The effects of drive base stiffness, disk-ramp contact, disk spinning and disk distortion have been studied. The results reveal that the drive base deformation and ramp contact are critical for the operational shock resistance performance of ultrathin drives.

New insights in a 2-D hard disk system under a temperature gradient

2011 ◽  
Author(s):  
J. J. del Pozo ◽  
C. Pérez-Espigares ◽  
P. I. Hurtado ◽  
P. L. Garrido
Keyword(s):  
Temperature Gradient ◽  
Hard Disk ◽  
Disk System
Sign in / Sign up

Export Citation Format

Share Document