Effect of Molecular Weight on Lubricant Depletion in a Heat Assisted Magnetic Recording System

2017 ◽  
Author(s):  
Deng Pan ◽  
Wenping Song
Keyword(s):  
Molecular Dynamics ◽  
Molecular Weight ◽  
Molecular Dynamics Simulation ◽  
Magnetic Recording ◽  
Recording System ◽  
Dynamics Simulation ◽  
Disk System ◽  
Heat Assisted Magnetic Recording ◽  
Lubricant Depletion

A model for studying lubricant depletion in HAMR slider/disk system was developed based on molecular dynamics simulation. We found that the lubricant molecular weight has small effect on lubricant depletion.

scholarly journals A double-edged sword: supramolecular complexes of triazavirine display multicenter binding effects which influence aggregate formation

2018 ◽  
Author(s):  
Yana A Zabrodskaya ◽  
Alexey V Shvetsov ◽  
Vladimir B Tsvetkov ◽  
Vladimir V Egorov
Keyword(s):  
Molecular Dynamics ◽  
Molecular Weight ◽  
Molecular Docking ◽  
Molecular Dynamics Simulation ◽  
Antiviral Activity ◽  
Small Molecule ◽  
Broad Spectrum ◽  
Dynamics Simulation ◽  
Supramolecular Complexes ◽  
Aggregate Formation

Triazavirine (TZV), a small molecule with a broad spectrum of antiviral activity, shows a tendency to induce the aggregation of melittin (MLT), a cationic membrane-disrupting peptide from the poison of the European bee. In MLT:TZV mixtures, high molecular weight precipitates form once a critical MLT:TZV ratio has been exceeded. Molecular dynamics simulation of MLT-TZV interactions, followed by molecular docking, led us to the hypothesis of multicenter binding of TZV supramolecular complexes to MLT.

The Effect of Velocity and Local Pressure Changes on Lubricant Transfer: A Molecular Dynamics Simulation

2013 ◽  
Author(s):  
Deng Pan ◽  
Andrey Ovcharenko ◽  
Min Yang ◽  
Frank E. Talke
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Magnetic Recording ◽  
Dynamics Simulation ◽  
Local Pressure ◽  
Lubricant Transfer ◽  
Pressure Changes

A model for lubricant transfer from a rotating magnetic recording disk to a magnetic recording slider is developed using molecular dynamics simulation. The effects of disk velocity and local pressure changes on lubricant transfer are investigated.

scholarly journals Evaluation of Radiation Resistance of Polystyrene Using Molecular Dynamics Simulation

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 346
Author(s):  
Yeong-Heum Yeon ◽  
Ha-Eun Shim ◽  
Jin-Hyung Park ◽  
Nam-Ho Lee ◽  
Jae-Yeon Park ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Molecular Weight ◽  
Molecular Dynamics Simulation ◽  
Average Molecular Weight ◽  
Absorbed Dose ◽  
Gel Permeation Chromatography ◽  
Dynamics Simulation ◽  
Molecular Weight Distributions ◽  
Radiation Enhancement ◽  
Γ Rays

The scission rates of polystyrene and fluorinated polystyrene irradiated in an irradiation facility with Co-60 γ-rays were determined using molecular dynamics simulation and gel permeation chromatography (GPC) molecular weight distributions. The prediction was based on the assumption that γ-ray energy is transferred to the initial velocity of the primary knock-on atom. We employed a molecular dynamics simulation procedure to compute the changes in bond length between the connections for selected values of the absorbed dose and compared the calculated values with measurements made on the irradiated samples. The samples were exposed to four different absorbed doses of 25, 50, 75, and 100 kGy. The scission process and scission ratio were simulated with LAMMPS with ReaxFF potential for each bond, and we compared the simulation results with the experimental data especially measuring average molecular weight to evaluate the effect of fluorination on radiation enhancement.

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