Abstract: Provided herein are atmospheric water harvesting systems that are tailored with an optimal adsorption threshold, based on energy cost and water availability considerations. The systems include a plurality of adsorbent modules, each containing metal organic frameworks of various adsorption thresholds. Such a design enables real time adjustment to achieve optimal harvesting conditions in changing atmospheric conditions, whether for daily or seasonal humidity variations.

Abstract: Provided herein are water harvesting systems, as well as methods using such systems, for capturing water from surrounding air. The systems and methods use water capture materials to adsorb water from the air. For example, the water capture materials may be metal-organic-frameworks. The systems and methods desorb this water in the form of water vapor, and the water vapor is condensed into liquid water and collected. The liquid water is suitable for use as drinking water.

Abstract: Described are hard disk drives that include a low density atmosphere, with which is included a passivating gas, and methods of using these hard disk drives and methods of assembling these hard disk drives.

Abstract: Provided herein are atmospheric water harvesting systems that are tailored with an optimal adsorption threshold, based on energy cost and water availability considerations. The systems include a plurality of adsorbent modules, each containing metal organic frameworks of various adsorption thresholds. Such a design enables real time adjustment to achieve optimal harvesting conditions in changing atmospheric conditions, whether for daily or seasonal humidity variations.

Abstract: Provided herein are water and carbon dioxide harvesting systems, as well as methods using such systems, for capturing water and carbon dioxide from surrounding air. The systems and methods use water capture materials to adsorb water from the air and carbon dioxide capture materials to adsorb carbon dioxide from the air. For example, the water and carbon dioxide capture materials may be metal-organic-frameworks. The systems and methods desorb the water in the form of water vapor and the carbon dioxide. The water vapor is then condensed into liquid water. The water and carbon dioxide generated can be used in farming systems, including hydroponics and vertical farming systems.

Abstract: Provided herein are atmospheric water harvesting systems that are tailored with an optimal adsorption threshold, based on energy cost and water availability considerations. The systems include a plurality of adsorbent modules, each containing metal organic frameworks of various adsorption thresholds. Such a design enables real time adjustment to achieve optimal harvesting conditions in changing atmospheric conditions, whether for daily or seasonal humidity variations.

Abstract: Provided herein are atmospheric water harvesting systems that are tailored with an optimal adsorption threshold, based on energy cost and water availability considerations. The systems include a plurality of adsorbent modules, each containing metal organic frameworks of various adsorption thresholds. Such a design enables real time adjustment to achieve optimal harvesting conditions in changing atmospheric conditions, whether for daily or seasonal humidity variations.

Abstract: Provided herein are refrigerator systems integrated with an atmospheric water harvesting unit, as well as methods using such systems. The atmospheric water harvesting unit serves as a water supply for the refrigerator system by capturing water from surrounding air. For example, the water capture materials may be metal organic frameworks. The systems and methods desorb this water in the form of water vapor, and the water vapor is condensed into liquid water and collected. The liquid water is suitable for use as drinking water.

Abstract: Provided herein are atmospheric water harvesting systems that are tailored with an optimal adsorption threshold, based on energy cost and water availability considerations. The systems include a plurality of adsorbent modules, each containing metal organic frameworks of various adsorption thresholds. Such a design enables real time adjustment to achieve optimal harvesting conditions in changing atmospheric conditions, whether for daily or seasonal humidity variations.

Abstract: Provided herein are water harvesting systems, as well as methods using such systems, for capturing water from surrounding air. The systems and methods use water capture materials to adsorb water from the air. For example, the water capture materials may be metal-organic-frameworks. The systems and methods desorb this water in the form of water vapor, and the water vapor is condensed into liquid water and collected. The liquid water is suitable for use as drinking water.

Abstract: In one embodiment, a method for forming a substantially monodisperse lubricant includes: providing a plurality of perfluoropolyether (PFPE) precursors, each PFPE precursor including two end segments and a PFPE backbone disposed therebetween; protecting one of the end segments of each PFPE precursor with one or more protecting agents to form a plurality of mono-protected PFPE precursors, each mono-protected PFPE precursor including a protected end segment and an unprotected end segment; and coupling the unprotected end segment of each of the mono-protected PFPE precursors to the unprotected end segment of another of the mono-protected PFPE precursors via a coupling agent to form multidentate PFPE structures.

Abstract: In one embodiment, a method includes forming a lubricant layer on an upper surface of a magnetic recording medium, the lubricant layer having a thickness greater than a dewetting thickness thereof, and polishing at least a portion of the upper surface of the magnetic recording medium using a polishing tape to remove any portion of the lubricant layer that extends above the dewetting thickness thereof, where, after the polishing, the resulting lubricant layer has a thickness about equal to the dewetting thickness thereof.

Abstract: According to one embodiment, a lubricant includes a multidentate perfluoropolyether having a chemical structure of: Re—Rz—Ri—Rz—Ri—Rz—Re, where Rz includes at least one perfluoroethyl ether unit, and where Re and Ri each include at least one functional group configured to attach to a surface. According to another embodiment, the aforementioned lubricant may be suitable for use in a sub-nanometer thick lubricant layer for various applications, and particularly useful for magnetic recording media.

Abstract: A method and apparatus for determining the wear on a hard disk drive. Specifically, determining the overcoat wear of a head and/or disk during operation. In one embodiment, the magnetic head is disposed adjacent to the disk. A slider voltage is applied between a disk having a first overcoat and a head having a second overcoat as the disk is spinning By monitoring in real time a change in both touchdown power and a change in an interfacial current at a head disk interface, an electrochemical oxidation of the first overcoat can be determined. Additionally, by changing the polarity of the slider voltage, an electrochemical oxidation of the second overcoat can be determined. Finally, by measuring a passivation current produced between the head and the disk, the precise location of a touchdown event can be determined.

Abstract: A method for smoothing a medium includes depositing a magnetic layer onto a base, depositing an overcoat layer onto an outer surface of the magnetic layer, and burnishing an outer surface of the overcoat layer. Further, the method includes at least one of (i) directing a first ion beam comprised of first energetic ions toward the outer surface of the magnetic layer at a first shallow grazing angle and smoothing the outer surface of the magnetic layer via etching engagement between the first ion beam and the outer surface of the magnetic layer; and (ii) directing a second ion beam comprised of second energetic ions toward the outer surface of the overcoat layer at a second shallow grazing angle and smoothing the outer surface of the overcoat layer via etching engagement between the second angled ion beam and the outer surface of the overcoat layer.

Abstract: A method for polishing a carbon overcoat of a magnetic media that results in a smooth surface free of carbon cluster debris. The method involves forming a magnetic disk having a carbon overcoat formed thereon. The carbon overcoat is then polished in the presence of ozone (O3). The heat from the polishing process along with the presence of the ozone, cause any carbon particles removed by the polishing to form CO2 gas so that there is no remaining carbon particle debris on the surface of the disk.

Abstract: In one embodiment, a method for forming a substantially monodisperse lubricant includes: providing a plurality of perfluoropolyether (PFPE) precursors, each PFPE precursor including two end segments and a PFPE backbone disposed therebetween; protecting one of the end segments of each PFPE precursor with one or more protecting agents to form a plurality of mono-protected PFPE precursors, each mono-protected PFPE precursor including a protected end segment and an unprotected end segment; and coupling the unprotected end segment of each of the mono-protected PFPE precursors to the unprotected end segment of another of the mono-protected PFPE precursors via a coupling agent to form multidentate PFPE structures.

Abstract: A method for producing a magnetic recording medium in one embodiment includes forming a magnetic material layer above a substrate, transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions, depositing a nonmagnetic material above the concave portions to form nonmagnetic regions, forming an oxide layer and/or hydroxide layer above the magnetic regions of the recording layer, and forming an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy above the oxide layer and/or hydroxide layer.

Abstract: A head-assisted magnetic recording-shingled magnetic recording (HAMR-SMR) type storage device is described that includes a control module and one or more magnetic recording layers partitioned into zones. The control module is configured to write initial data beginning at an initial logical address of a zone. The initial logical address of the zone corresponds to an initial physical address of the zone. Responsive to receiving a command from a host associated with the HAMR-SMR type storage device to reset the zone and write subsequent data, the control module is further configured to reset the initial logical address of the zone to a subsequent physical address of the zone, and after resetting the initial logical address, write the subsequent data beginning at the initial logical address of the zone.

Abstract: A system for preventing the accumulation of excess lubrication in the form of lubricant lines on magnetic media disks for hard disk drives uses a mandrel design that produces negligible surface waves when the disks are dipped in lubricant baths. The mandrel has inverted tear drop shaped supports for the disks. The supports are smaller in overall size than an inner diameter hole formed in the disks and diminish the formation of waves in the lubricant bath.