Abstract:
A magnetic printing stamp and a magnetic printing method using the same. The magnetic printing stamp may includes a plurality of servo regions having a magnetic body pattern and a plurality of data regions having no magnetic body pattern that are alternately formed, wherein a thickness of a portion of a substrate corresponding to each of the servo regions is less than a thickness of a portion of the substrate corresponding to each of the data regions. When a servo pattern is to be magnetically printed, the magnetic printing stamp and a magnetic recording medium uniformly and completely come in contact with each other. Thus, the magnetic printing stamp and the magnetic recording medium are prevented from being contaminated or damaged. In addition, excellent magnetic printing properties corresponding to an uneven pattern may be achieved.
Abstract:
A heat-assisted magnetic recording head (HAMR) head includes a magnetic recording head including a recording pole for applying a magnetic recording field on a magnetic recording medium and a return pole magnetically connected to the recording pole to form a magnetic path, a light source for emitting light, and an optical transmission module including an photonic crystal waveguide disposed at a side of the magnetic recording head to guide light incident from the light source and a nano aperture for enhancing an optical field by varying an intensity distribution of the light guided through the photonic crystal waveguide.
Abstract:
Disclosed is a method for manufacturing a template for a high-density patterned medium and a high-density magnetic storage medium using the same. In the method, magnetic particles are used as a mask and no lithographic process is required.
Abstract:
Disclosed is a method for manufacturing a template for a high-density patterned medium and a high-density magnetic storage medium using the same. In the method, magnetic particles are used as a mask and no lithographic process is required.
Abstract:
Provided is a master recording medium suitable for use in magnetic transfer of a servo pattern onto a magnetic recording medium. The master recording medium includes a substrate including a plurality of servo regions and a plurality of data regions, and a magnetic layer formed on each of the servo regions and patterned in the shape of a servo pattern to be patterned on a magnetic recording medium, wherein the servo regions protrude relative to the data regions.
Abstract:
A magnetic recording medium and a method of manufacturing the magnetic recording medium are provided. In order to increase the recording density of the magnetic recording medium, the magnetic recording medium is configured to multiple magnetic layers by consecutively forming a first magnetic layer having a thin film shape and a second magnetic layer comprising patterned magnetic bits. The first magnetic layer has a magnetic anisotropic coefficient greater than that of the second magnetic layer.
Abstract:
Disclosed is a method for manufacturing a template for a high-density patterned medium and a high-density magnetic storage medium using the same. In the method, magnetic particles are used as a mask and no lithographic process is required.
Abstract:
An integrated optical pickup and a manufacturing method thereof, and an optical information storage system including the pickup. The integrated optical pickup includes a light source; a main photo-detector, which receives light emitted from the light source and reflected from an optical information storage medium; a light-collecting and optical path separating member, which focuses light emitted from the light source on the optical information storage medium and separates an optical path of light incident on the optical information storage medium from an optical path of light reflected from the optical information storage medium; and an optical bench, which is coupled to the light-collecting and optical path separating member, an optical path being formed between the light source and the main photo-detector, and the light-collecting and optical path separating member, and the optical bench and the light-collecting and optical path separating member being respectively formed on a wafer and then obtained by being separated into a plurality of assemblies.
Abstract:
A hybrid achromatic optical lens having a high numerical aperture whose chromatic aberration is removed and a method for manufacturing the same are provided. The hybrid achromatic optical lens includes a first optical member of a low index of refraction and a second optical member of a high index of refraction. The second optical member is formed on a depressed portion of the first optical member and has a diffractive surface, which is a contact surface of the second optical member with the first optical member and has a plurality of pitches formed on a refractive surface. The method for manufacturing the hybrid achromatic optical lens includes forming a profile of a diffractive surface having a plurality of pitches on a molding die whose one surface is the same as a profile of a refractive surface, forming a depression having the diffractive surface on a first optical member having a low index of refraction using the molding die, and coating a material having a high index of refraction on the depression, grinding a surface of material, and forming a second optical member having a high index of refraction.
Abstract:
A heat-assisted magnetic recording head (HAMR) head includes a magnetic recording head including a recording pole for applying a magnetic recording field on a magnetic recording medium and a return pole magnetically connected to the recording pole to form a magnetic path, a light source for emitting light, and an optical transmission module including an photonic crystal waveguide disposed at a side of the magnetic recording head to guide light incident from the light source and a nano aperture for enhancing an optical field by varying an intensity distribution of the light guided through the photonic crystal waveguide.