摘要:
To provide a method for manufacturing a magnetic recording medium which creates anodically oxidized aluminum nanoholes so as to have a rectangular or elliptical sectional shape and gives shape anisotropy to a magnetic material filled in the nanoholes to thereby always fix a relative positional relation between magnetizations of the magnetic material and a magnetic head that detects the magnetizations. The method for manufacturing a magnetic recording medium includes: preparing a member having regularly arranged plural pits; subjecting the member to anodic oxidation treatment so that formation of holes is started with the pits as starting points, and a porous region, which has a first portion where the holes are formed without branching and a second portion where branched holes are formed, is formed; filling a magnetic material in the formed holes; and removing the non-branching portions of the holes.
摘要:
The invention provides a structured material composed by including a noble metal, in which an oriented layer is formed on a layer containing a Group 4A metal. The invention enables to form an oriented layer, which has required a high temperature for formation, by a low temperature process.
摘要:
An electronic device including a pair of electrodes disposed on a substrate and carbon nanotubes electrically connecting the electrodes. A method for manufacturing this device in which the electrodes are disposed on the substrate and the nanotubes are prepared to electrically connect the electrodes.
摘要:
An electronic device in which a substrate with a pair of electrodes is provided and a carbon nanotube is formed or arranged in relation to the electrodes.
摘要:
A magnetic device has a layer containing fine pores and having wirings on both faces of the layer formed on a substrate, wherein at least a part of the pores are filled with a layered column formed by stacking magnetic layers and nonmagnetic layers alternately, and at least a part of the pores filled with a conductive column as writing wires for writing into the magnetic layers in the adjacent pores. The fine pores may be nano-holes of alumina formed by anodic oxidation. A part of the pores may serve to intercept a magnetic field. The magnetic layer may contain Co, and the nonmagnetic layer and/or the writing wire may contain Cu. The pores may be arranged in a honeycomb arrangement or a rectangular array. The ratio of the sectional area S (cm2) of the pore and the length (cm) of the pore satisfy the relation: 105 105.
摘要:
A minute structure is provided in which electroconductive paths are only formed in nanoholes, and a material is filled in the nanoholes, which are disposed in a specific area, by using the electroconductive paths. The minute structure comprising pores comprises a) a substrate, b) a plurality of electroconductive layers formed on a surface of the substrate, c) a layer primarily composed of aluminum oxide covering the plurality of electroconductive layers and a surface of the substrate where no electroconductive layer is formed, and d) a plurality of pores formed in the layer primarily composed of aluminum oxide, in which the pores are disposed above the electroconductive layers and the surface of the substrate where no electroconductive layers is formed, with a part of the layer primarily composed of aluminum oxide provided under the bottoms of the pores, and in which the layer primarily composed of aluminum oxide provided between the electroconductive layer and the bottoms of the pores disposed above the electroconductive layer comprises a material forming the electroconductive layer.
摘要:
A fluid control device has very fine pores with an average diameter not greater than 10 nm and provides a large flux. The fluid control device comprises an anodized alumina film having fine pores and a silicon based micro-porous film having very fine pores and made from an AlSi mixed film and the fine pores and the very fine pores are at least partly linked with each other. The fluid control device is prepared from a film including at least an aluminum layer and an AlSi mixed film by forming an anodized alumina film having fine pores by way of an anodization process for the aluminum layer part and also forming a silicon based micro-porous film having very fine pores containing silicon as principal ingredient by way of an anodization process or etching process for the AlSi mixed film. The fluid control device can be used as filter or ultrafilter film that allows fluid and gas to pass through it.
摘要:
A semiconductor device array comprising highly densely arranged nano-size semiconductor devices is prepared by a simple method. The array comprises a porous body having cylinder-shaped pores formed by removing cylinder-shaped regions from a structure that includes a matrix member formed so as to contain silicon or germanium and the cylinder-shaped regions containing aluminum and dispersed in the matrix member, semiconductor regions formed in the pores, each having at least a p-n or p-i-n junction, and a pair or electrodes, arranged respectively on the top and at the bottom of the semiconductor regions. The semiconductor regions and the pair of electrodes form a plurality of semiconductor devices on a substrate.
摘要:
A structure having a hole, including a substrate, a first layer including an alumina hole, and a second layer disposed between the substrate and the fist layer, wherein the second layer contains silicon, and has a smaller hole than the alumina hole.
摘要:
With regard to a function device formed by filling a porous structure with a functional material and a method for manufacturing the functional device, a technique for realizing a structure on a nanometer scale is not fully established. However, a method for manufacturing a function device characterized by including a step of providing a structure including columnar members and an area surrounding the columnar members, a step of removing the columnar members from the structure to form a porous body and a step of filling the porous body with a functional material allows various types of function device to be provided.