Vapor Phase Lubricant Adsorption on Magnetic Data Storage Media

2005 ◽  
Author(s):  
Yang Yun ◽  
Andrew J. Gellman
Keyword(s):  
Data Storage ◽  
Vapor Phase ◽  
Ambient Air ◽  
Magnetic Data ◽  
Vapor Phase Lubrication ◽  
Storage Media ◽  
Airborne Contamination ◽  
Hydrogenated Amorphous ◽  
Processing Steps ◽  
Vapor Lubrication

Vapor phase lubrication (VPL) integrates media lubrication with the vacuum processing steps used throughout most of the hard disk media fabrication process. This avoids exposure of the unlubricated hydrogenated amorphous carbon (a-CHx) overcoat to the ambient air and airborne contamination. In vapor lubrication the a-CHx surface can be oxidized under controlled conditions immediately prior to lubricant adsorption. The interaction between lubricants and a-CHx films can be tailored by controlled oxidation of the a-CHx in vapor phase lubrication.

Issues in Vapor Phase Lubrication of Magnetic Data Storage Media

2005 ◽  
Author(s):  
Andrew J. Gellman ◽  
Yang Yun
Keyword(s):  
Data Storage ◽  
Vapor Phase ◽  
Ambient Air ◽  
Magnetic Data ◽  
Vapor Phase Lubrication ◽  
Initial Oxidation ◽  
Storage Media ◽  
Airborne Contamination ◽  
Langmuir Hinshelwood Mechanism ◽  
Kinetics Of

Vapor phase lubrication (VPL) integrates media lubrication with the vacuum processing steps used throughout most of the hard disk media fabrication process. This avoids exposure of the unlubricated a-CHx overcoat surface to the ambient air and airborne contamination. In vapor lubrication the a-CHx surface can be oxidized under controlled conditions immediately prior to lubricant adsorption. The kinetics of a-CHx oxidation have been studied using x-ray photoemission spectroscopy in an apparatus that allows oxidation of freshly deposited a-CHx films. The dissociative sticking coefficient of oxygen is ∼10−6 and the initial oxidation kinetics can be described by a Langmuir-Hinshelwood mechanism.

Oxidation Kinetics of Hydrogenated Amorphous Carbon (a-CHx) Overcoats for Magnetic Data Storage Media

Langmuir ◽  
2007 ◽  
Vol 23 (10) ◽  
pp. 5485-5490 ◽  
Author(s):  
Yang Yun ◽  
Xiaoding Ma ◽  
Jing Gui ◽  
Esteban Broitman ◽  
Andrew J. Gellman
Keyword(s):  
Data Storage ◽  
Amorphous Carbon ◽  
Oxidation Kinetics ◽  
Magnetic Data Storage ◽  
Magnetic Data ◽  
Hydrogenated Amorphous Carbon ◽  
Storage Media ◽  
Hydrogenated Amorphous ◽  
Kinetics Of

Applying NiTi Shape-Memory Thin Films to Thermomechanical Data Storage Technology

2004 ◽  
Vol 855 ◽  
Author(s):  
Wendy C. Crone ◽  
Gordon A. Shaw
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Shape Memory ◽  
Data Storage ◽  
Martensite Phase ◽  
Magnetic Data ◽  
Thermomechanical Cycling ◽  
Storage Technology ◽  
Storage Media ◽  
Theoretical Predictions

ABSTRACTAs the data storage density in cutting edge microelectronic devices continues to increase, the superparamagnetic effect poses a problem for magnetic data storage media. One strategy for overcoming this obstacle is the use of thermomechanical data storage technology. In this approach, data is written by a nanoscale mechanical probe as an indentation on a surface, read by a transducer built into the probe, and then erased by the application of heat. An example of such a device is the IBM millipede, which uses a polymer thin film as the data storage medium. It is also possible, however, to use other kinds of media for thermomechanical data storage, and in the following work, we explore the possibility of using thin film Ni-Ti shape memory alloy (SMA). Previous work has shown that nanometer-scale indentations made in martensite phase Ni-Ti SMA thin films recover substantially upon heating. Issues such as repeated thermomechanical cycling of indentations, indent proximity, and film thickness impact the practicability of this technique. While there are still problems to be solved, the experimental evidence and theoretical predictions show SMA thin films are an appropriate medium for thermomechanical data storage.

scholarly journals Promiscuous molecules for smarter file operations in DNA-based data storage

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Kyle J. Tomek ◽  
Kevin Volkel ◽  
Elaine W. Indermaur ◽  
James M. Tuck ◽  
Albert J. Keung
Keyword(s):  
Data Storage ◽  
Data Access ◽  
Molecular Architecture ◽  
Biomolecular Structure ◽  
Jpeg Images ◽  
Storage Media ◽  
Dna Storage ◽  
Dna Strands ◽  
Background Database ◽  
Organizational Features

AbstractDNA holds significant promise as a data storage medium due to its density, longevity, and resource and energy conservation. These advantages arise from the inherent biomolecular structure of DNA which differentiates it from conventional storage media. The unique molecular architecture of DNA storage also prompts important discussions on how data should be organized, accessed, and manipulated and what practical functionalities may be possible. Here we leverage thermodynamic tuning of biomolecular interactions to implement useful data access and organizational features. Specific sets of environmental conditions including distinct DNA concentrations and temperatures were screened for their ability to switchably access either all DNA strands encoding full image files from a GB-sized background database or subsets of those strands encoding low resolution, File Preview, versions. We demonstrate File Preview with four JPEG images and provide an argument for the substantial and practical economic benefit of this generalizable strategy to organize data.

scholarly journals Nanostructured ZnFe2O4: An Exotic Energy Material

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1286
Author(s):  
Murtaza Bohra ◽  
Vidya Alman ◽  
Rémi Arras
Keyword(s):  
Data Storage ◽  
Smart Materials ◽  
Energy Demand ◽  
Ceramic Materials ◽  
Magnetic Data ◽  
Processing Route ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Reduced Toxicity ◽  
Cation Arrangement

More people, more cities; the energy demand increases in consequence and much of that will rely on next-generation smart materials. Zn-ferrites (ZnFe2O4) are nonconventional ceramic materials on account of their unique properties, such as chemical and thermal stability and the reduced toxicity of Zn over other metals. Furthermore, the remarkable cation inversion behavior in nanostructured ZnFe2O4 extensively cast-off in the high-density magnetic data storage, 5G mobile communication, energy storage devices like Li-ion batteries, supercapacitors, and water splitting for hydrogen production, among others. Here, we review how aforesaid properties can be easily tuned in various ZnFe2O4 nanostructures depending on the choice, amount, and oxidation state of metal ions, the specific features of cation arrangement in the crystal lattice and the processing route used for the fabrication.

Vacuum Coating Technology For Optical Data Storage Media

2006 ◽  
Vol 18 (S1) ◽  
pp. 38-44
Author(s):  
Bernhard Cord ◽  
Michael Mücke ◽  
Eggo Sichmann
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Coating Technology ◽  
Storage Media
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