摘要:
A Josephson junction element having a substrate of a single crystal having a V-shaped notch formed in a surface of the substrate and a wiring pattern of an oxide superconductor formed on the surface of the substrate and crossing the notch to form a weak link region in the pattern at a position above the notch. The notch is defined by first and second walls joining with each other at the bottom of the notch and has first and second corners at which the first and second walls meet the surface of the substrate. The first and second corners have radii of curvature of 5-50 nm and 50-500 nm, respectively, provided that the difference in radius of curvature between the first and second corners is not smaller than 10 nm. The notch is formed by obliquely irradiating a predetermined portion of the substrate with a focused ion beam.
摘要:
A superconductive device manufacturing method is disclosed, which can prevent the characteristic deterioration on the processed surface, reduce the number of process steps, and thereby shorten the manufacturing time. The superconductive device manufacturing method comprises the steps of: forming a YBCO film (301) on a substrate (201); forming a mask pattern (302) on the formed YBCO film (301); and etching the YBCO film (301) by use of the formed mask pattern (302) and a plasma including at least oxygen plasma.
摘要:
A sliding cable includes a core member, a tooth member wound around the core member and a covering member which is formed by extrusion molding of a foaming material and which covers the core member so as to project out from an outer circumferential surface of the tooth member.
摘要:
A superconducting device has a substrate and a superconducting film formed on the substrate. A surface of the substrate has a first surface portion of which a curvature is constant or changes continuously, a second surface portion of which a curvature is constant or changes continuously, and a third surface portion at which the first and second surface portions meet and at which the curvatures of the first and second surface portions become discontinuous. The superconducting film formed on the surface of said substrate has a grain boundary serving as a junction only in a portion corresponding to the third surface portion of the substrate.
摘要:
A photoresist pattern developed on a semiconductor substrate is rinsed by rinsing liquid. At this rinsing step, the rinsing liquid is heated to be decreased in surface tension, so that the collapse of the photoresist pattern is avoided.
摘要:
The invention is directed to an actuator which is mounted on a base to rotate a rotary member about a rotational axis thereof. The actuator includes a first magnetic rotary member which is rotatably mounted on the base about the axis, and provided with a first engaging portion which traces a peripheral locus about the axis. It also includes a second magnetic rotary member which is rotatably mounted about the axis, and provided with a second engaging portion engageable with the first engaging portion on the peripheral locus about the axis. The first engaging portion is moved to be engageable with the second engaging portion when the first rotary member is rotated in one direction relative to the second rotary member, and the first engaging portion is moved to be away from the second engaging portion when the first rotary member is rotated in the opposite direction. A solenoid is concentrically mounted about the axis in stationary relationship with the base, and adapted for exciting the first and second rotary members to form a magnetic path therewith when the first and second engaging portions engage with each other. And, a rotating device such as a motor is provided for rotating the first rotary member about the axis.
摘要:
A laser beam is radiated on a recording medium such as a phase transition type optical disk to change optical characteristics depending on a change in arrangement of atoms in a recording layer of the recording medium so as to repetitively record/erase information represented by the lengths of optical marks, the recording power of the laser beam radiated to record the information in the recording medium is changed stepwise in two or more power levels sequentially higher than an erasure power level of a laser beam radiated to erase the information recorded in the recording medium.
摘要:
A dental handpiece holder adapted such that the length of the handpiece holder for holding and accommodating a dental handpiece is shortened in the axial direction, whereby the main unit of the handpiece can be attached to and detached from the joint section of the handpiece for the purpose of replacement with one hand of an operator. Also a dental treatment assembly by use of the holder.The handpiece holder comprising a gutter-shaped receiving seat, first and second grip sections extending from both side fringes of the receiving seat, contact sections formed at the leading ends of the first and second grip sections respectively and an engagement groove or projection extending across the contact sections or the peripheral areas thereof in the internal circumferential direction of the grip sections.
摘要:
A steering mechanism for a radio controlled device that employs a solenoid coil and is insensitive to frequency flucuations in a control signal. The steering mechanism includes opposing poles of a permanent magnet and a solenoid coil positioned equidistant between the poles so as to be pivotable to positions opposing each of the individual poles.
摘要:
Disclosed is a structural austenitic stainless steel with superior proof stress and toughness at cryogenic temperatures. The steel has a composition essentially consisting of, by weight, not greater than 0.05% of carbon, 0.20 to 0.70% of nitrogen, not greater than 1.0% of silicon, not greater than 25% of manganese, 13 to 35% of chromium, 5 to 25% of nickel and the balance substantially iron. The chromium content and manganese content is selected to meet the condition of (Cr+0.9 Mn).gtoreq.20%. The index of cleanliness showing the amount of nonmetallic inclusions is not greater than 0.1%.