7667results about "Magnetic recording" patented technology

The invention relates to the preparation of a hydrogel surface useful in the formation and manipulation of arrays of molecules, particularly polynucleotides and to the chemical modification of these and other arrays. In particular, the invention relates to a method of preparing a hydrogel immobilised to a solid support comprising polymerising on the support a mixture of a first comonomer which is acrylamide, methacrylamide, hydroxyethyl methacrylate or N-vinyl pyrrolidinone and a second comonomer which is a functionalised acrylamide or acrylate.

A multilayered material is provided which includes a substrate and a silicon-containing film formed on the substrate, wherein the silicon-containing film has a nitrogen-rich area including silicon atoms and nitrogen atoms, or silicon atoms, nitrogen atoms, and an oxygen atoms and the nitrogen-rich area is formed by irradiating a polysilazane film formed on the substrate with an energy beam in an atmosphere not substantially including oxygen or water vapor and denaturing at least a part of the polysilazane film. A method of producing the multilayered material is also provided.

A component (10) for a semiconductor processing apparatus includes a matrix (10a) defining a shape of the component, and a protection film (10c) covering a predetermined surface of the matrix. The protection film (10c) consists essentially of an amorphous oxide of a first element selected from the group consisting of aluminum, silicon, hafnium, zirconium, and yttrium. The protection film (10c) has a porosity of less than 1% and a thickness of 1 nm to 10 μm.

Disclosed herein is an article that includes a first plurality of spaced features. The spaced features are arranged in a plurality of groupings; the groupings of features include repeat units; the spaced features within a grouping are spaced apart at an average distance of about 1 nanometer to about 500 micrometers; each feature having a surface that is substantially parallel to a surface on a neighboring feature; each feature being separated from its neighboring feature; the groupings of features being arranged with respect to one another so as to define a tortuous pathway. The plurality of spaced features provide the article with an engineered roughness index of about 5 to about 20.

A gas barrier film includes two or more first barrier layers each made of a first inorganic material and one or more second barrier layers each made of a second inorganic material different from the first inorganic material. Each of the two or more first barrier layers and each of the one or more second barrier layers are alternately stacked. The first inorganic material comprises aluminum oxide. Each of the two or more first barrier layers has a thickness of 3 nm or more. The total thickness of the two or more first barrier layers is 20 nm or less. The two or more first barrier layers and the one or more second barrier layers are formed by atomic layer deposition.

Capsules and similar objects are made from materials having diamond (sp³) lattice structures, including diamond materials in synthetic crystalline, polycrystalline (ordered or disordered), nanocrystalline and amorphous forms. The capsules generally include a hollow shell made of a diamond material that defines an interior region that may be empty or that may contain a fluid or solid material. Some of the capsules include access ports that can be used to fill the capsule with a fluid. Capsules and similar structures can be manufactured by growing diamond on suitably shaped substrates. In some of these methods, diamond shell sections are grown on substrates, then joined together. In other methods, a nearly complete diamond shell is grown around a form substrate, and the substrate can be removed through a relatively small opening in the shell.

The invention relates to a tool, especially a cutting insert for cutting metallic materials, which consist of a hard metal, cermet ceramics or steel base, especially of a high speed steel base, and at least one layer deposited thereon. The single layer, or in the case of several layers the outer layer or the layer underneath the outer layer, contains molybdenum sulfide. The aim of the invention is to improve the resistance to wear of the friction-reducing, molybdenum sulfide containing layer even at high pressures. To this end, the molybdenum sulfide containing layer consists of an alternating sequence of two layer that are different from one another. The first layer contains 51 to 100% by weight of metallic molybdenum and the second layer contains 21 to 100% by weight of MoS2 which substantially consists of hexagonal crystals that are at least substantially oriented in a plane parallel to the tool surface.

A fabricated microstructure comprising at least one protrusion capable of providing an adhesive force at a surface of between about 60 and 2,000 nano-Newtons. A stalk supports the protrusion at an oblique angle relative to a supporting surface. The microstructure can adhere to different surfaces.

Entertainment content complementary to a musical recording is delivered to a user's computer by means of a computer network link. The user employs a browser to access the computer network. A plug-in for the browser is able to control an audio CD or other device for playing the musical recording. A script stored on the remote computer accessed over the network is downloaded. The script synchronizes the delivery of the complementary entertainment content with the play of the musical recording.

A thin film of material having a rock-salt-like structure is deposited on a smooth amorphous substrate surface by ion beam assisted deposition.

A barrier assembly having a flexible or rigid substrate overcoated with an all polymer multilayer stack. A multilayer on the substrate includes alternating diamond-like glass or carbon layers with polymer layers. Another multilayer includes alternating polymer layers using different types of polymers. The barrier layers can be used to mount, cover, encapsulate or form composite assemblies for protection of moisture or oxygen sensitive articles

A low temperature chemical route to efficiently produce nanomaterials is described. The nanomaterials are synthesized by intercalating ions into layered compounds, exfoliating to create individual layers and then sonicating to produce nanotubes, nanorods, nanoscrolls and/or nanosheets. It is applicable to various different layered inorganic compounds (for example, bismuth selenides/tellurides, graphite, and other metal complexes, particularly transition metal dichalcogenides compounds including oxygen, sulfur, tellurium or selenium).

An activatable (e.g., heat expandable) material and articles incorporating the same is disclosed. The material includes an epoxy resin; an epoxy/elastomer hybrid or reaction product; a blowing agent; a curing agent; and optionally, a filler. In preferred embodiments, the material includes aramid fiber, nanoclay or both.

To provide the method of forming the thin coating film of fluorine-containing polymer having heat resistance and non-sticking property by adhering directly to a substrate without lowering characteristics such as reflection and light transmission which the substrate has. The thin coating film is a film which comprises a continuous layer of fluorine-containing polymer formed by adhering directly to the substrate and has a thickness of less than 3 mum, wherein the fluorine-containing polymer in the coating film has a hydrophilic functional group and a crystalline melting point of not less than 200° C.

A method and system for providing an energy assisted magnetic recording (EAMR) transducer coupled with a laser are described. The EAMR transducer has an air-bearing surface (ABS) residing in proximity to a media during use. The method and system include providing waveguide(s), a near-field transducer (NFT), write pole(s), and coil(s). The waveguide(s) direct energy from the laser toward the ABS. The NFT is coupled with the waveguide and focuses the energy onto the media. The write pole(s) include a stitch for providing a magnetic field to the media and a yoke coupled to the stitch. The stitch includes an ABS-facing surface, a sloped surface, and an NFT-facing surface between the ABS-facing and sloped surfaces. The NFT-facing surface is substantially parallel to the NFT. The sloped surface is sloped at least twenty-five and not more than sixty-five degrees with respect to the NFT-facing surface. The coil(s) energize the write pole(s).

A method and system provides an EAMR transducer. The transducer is coupled with a laser for providing energy and has an air-bearing surface (ABS) configured to reside in proximity to a media during use. The EAMR transducer includes a near field transducer (NFT) for focusing the energy onto the region of the media, a write pole, and at least one coil for energizing the write pole. The NFT includes a ring portion having an aperture therein and a pin portion proximate to the ABS. The write pole is configured to write to a region of the media.

Lapping guides for use in fabrication of a magnetic recording head are provided. The lapping guides comprise a first differential electronic lapping guide (ELG) disposed in a first layer of the magnetic recording head. The first differential ELG has a first resistive element and a second resistive element between which is disposed a first common electrical lead. The lapping guides further comprise a second differential ELG disposed in a second layer of the magnetic recording head. The second differential ELG has a third resistive element and a fourth resistive element between which is disposed a second common electrical lead. The first and second differential ELGs share a common ground and a common current injection source. Remaining lapping distances at the first and second layers of the magnetic recording head are determined by measuring changing voltages across the first, second, third and fourth resistive elements, respectively.

A method monitors operation of a disk drive. The method includes providing a disk drive which includes a rotating disk and a head having a read transducer in proximity to a surface of the disk and an adjustment mechanism which controllably adjusts an average relative spacing between the read transducer and the surface. The method further includes generating a read-back signal by reading from the surface using the read transducer. The read-back signal includes a high frequency carrier signal having an envelope that is modulated by a lower frequency signal. The method further includes varying the average relative spacing between the read transducer and the surface using the adjustment mechanism. The method further includes analyzing the envelope in the frequency domain and detecting an emergence of at least one frequency component of the envelope within an air bearing resonance range of frequencies.

Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recoded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.

A magnetic head comprising a waveguide coupler for coupling incident electromagnetic (EM) radiation into a waveguide is disclosed. The waveguide coupler includes a bottom clad layer and a waveguide core layer formed above the bottom clad layer. An interface between the bottom clad layer and the waveguide core layer includes a first grating having a first period and a first etch depth, which are configured to couple a first portion of the incident EM radiation into the waveguide core layer. The waveguide coupler can further comprise a top clad layer formed above the waveguide core layer. An interface between the waveguide core layer and the top clad layer includes a second grating having a second period and a second etch depth. The second period and the second etch depth are configured to couple a second portion of the incident EM radiation into the waveguide core layer.

A near field transducer (NFT) for use in an energy assisted magnetic recording (EAMR) head and configured to direct energy to a recording media is disclosed. The NFT comprises a disk section; and a pin section extending towards an air bearing surface (ABS) from the disk section. The pin section has a proximal end adjoining the disk section and a distal end opposite to the proximal end and facing the ABS, wherein at least the distal end of the pin section has a non- rectangular cross section in a plane parallel to the ABS.