摘要:
This invention provides a process for producing a carbon nanotube electric field effect transistor that can improve yield in channel preparation. Carbon nanotubes dispersed in a mixed acid composed of sulfuric acid and nitric acid are subjected to radical treatment with aqueous hydrogen peroxide to cut the carbon nanotubes and thus to provide carboxyl-introduced carbon nanotube fragments. The carbon nanotube fragments are attached, through a covalent bond and/or an electrostatic bond, to a site, where a source electrode is to be formed, and a site where a drain electrode is to be formed, in a substrate with a functional group, to be attached to a carboxyl group, introduced thereinto. The carbon nanotube fragments attached to the substrate are attached to carbon nanotubes as channels through n-n interaction to fix the carbon nanotubes as channels to the substrate.
摘要:
A fibrous solid carbon manifold assembly and a method for producing the fibrous solid carbon manifold assembly are provided. The fibrous solid carbon manifold assembly has fibrous bodies carbonized, and a limitless number of superfine graphite filaments grown on surfaces of the carbonized fibrous bodies, in the inside of each of said fibrous bodies and in a gap between adjacent ones of said fibrous bodies. With such a configuration, the number of superfine graphite filaments can be increased more greatly.
摘要:
At the forefront of a probe is formed a carbon nanotube having an armchair type crystal structure or of which the forefront is chemically modified with modifying molecules.
摘要:
To provide a magnetic recording method and apparatus which utilize a spin vortex as a recording unit and which enables high density recording, spin vortices (2) are recorded on a recording medium (1) such that the spin vortices (2) are aligned to form a recording track (3). The recording medium (1) is formed of a magnetic super-thin film, and positive and negative recorded spin vortices (2) are aligned thereon.
摘要:
To provide a probe having an optical waveguide which is robust and highly reliable, and a method of manufacturing the same. A probe having an optical waveguide includes an optical waveguide portion having a double hetero structure and comprising an In1−x′−y′Gax′Aly′N layer (5), an In1−x−yGaxAlyN layer (4), and an In1−x″−y″Gax″Aly″N layer (3); and an AlxGa1−xN probe portion (8) grown in a conical shape on the In1−x−yGaxAlyN layer (4) of the optical waveguide portion.
摘要翻译:为了提供具有坚固且高可靠性的光波导的探针及其制造方法。 具有光波导的探针包括具有双异质结构并包括In1-x'-y'Gax'Aly'N层(5),In1-x-YGaxAlyN层(4)和In1 -x“' - ''''''''''''N层(3); 以及在光波导部分的In1-x-yGaxAlyN层(4)上生长为圆锥形的Al x Ga 1-x N探针部分(8)。
摘要:
In a method of measuring an exchange force between a specimen and a probe, the specimen and probe are faced to each other with a distance within a close proximity or RKKY-type exchange interaction region from a distance at which conduction electron clouds begin to be overlapped with each other to a distance at which localized electron clouds are not substantially overlapped with each other, a relative displacement of the specimen and probe is detected to measure a first force under such a condition that directions of magnetic moments of said specimen surface and probe are in parallel with each other to derive a first force and under such a condition that directions of magnetic moments of said specimen surface and probe are in anti-parallel with each other to derive a second force. An exchange force is derived as a difference between said first and second forces. Magnetic property of the specimen can be evaluated on the basis of the thus measured exchange force.
摘要:
The present invention relates to a method for measuring three-dimensional spatial magnetic field distributions used particularly in measuring the magnetic field distribution in a small spatial region such as a leakage magnetic field of a magnetic head and the object thereof is a measuring method capable of measuring a high frequency magnetic field in the small spatial region with a high precision.
摘要:
An amorphous alloy for use in magnetic heads having the following composition formula:(Fe.sub.1-a, Co.sub.a).sub.100-b (Si.sub.c,B.sub.d).sub.bwherea=0.93-0.95b=23-27 atomic %c/c+d)=0.55-0.65.Cr and Ru may be desirably added to the amorphous alloy for improving the corrosion and abrasion resistance. Further, secondary phase particles may be dispersed in the alloy matrix for improving the effective magnetic permeability, particularly, at high frequency region.
摘要:
A single-electron transistor comprising at least a substrate, a source electrode and a drain electrode formed on top of the substrate opposing to each other, and a channel arranged between the source electrode is disclosed wherein the channel is composed of ultra fine fibers. By having such a constitution, a sensor can have excellent sensitivity.
摘要:
A single-electron transistor comprising at least a substrate, a source electrode and a drain electrode formed on top of the substrate opposing to each other, and a channel arranged between the source electrode is disclosed wherein the channel is composed of ultra fine fibers. By having such a constitution, a sensor can have excellent sensitivity.