Equalizing pulse external magnetic field adjustment device and method in high-temperature SQUID application

The invention discloses a regulating device for equalizing the pulse impressed field by means of electrical regulation in a low-field nuclear magnetic resonance system based on a high-temperature SQUID, and a regulating method for equalizing the pulse impressed field by the use of the device. The regulating method comprises the steps that a pair of back-rolled coils is connected in parallel in the pulse polarized field and a potential device connected in the coils in series is regulated for realizing the regulation of the magnetic field vertical to the SQUID. The method can realize the remote equalizing regulation of the pulse polarized field and can also achieve quite high precision. The regulating device and the equalizing regulation method are quite effective for the low-field nuclear magnetic resonance system.

Cross-module adjustable coupling quantum bit chip

The invention provides a cross-module adjustable coupling quantum bit chip. The chip comprises at least one wiring layer chip; at least two bit layer chips coupled to the at least one wiring layer chip; the at least two bit layer chips comprise a first bit layer chip and a second bit layer chip which are adjacent to each other, and adjacent bits between the first bit layer chip and the second bit layer chip are capacitively coupled through an adjustable coupler; the first bit layer chip comprises a first quantum bit and a first bypass capacitor electrode which are in capacitance coupling with each other and are located at the edge of the chip, and the second bit layer chip comprises a second quantum bit located at the edge of the chip. A wiring layer chip located between the first bit layer chip and the second bit layer chip comprises a second bypass capacitor electrode; the first bypass capacitance electrode is capacitively coupled to the tunable coupler, and the second qubit is capacitively ...

Planar second-order magnetic field gradient meter in new structure

High-temperature-resistant modified asphalt waterproof coiled material and preparation method thereof

The invention discloses a high-temperature-resistant modified asphalt waterproof coiled material. The waterproof coiled material structurally comprises an upper isolating layer, an upper waterproof layer, a tire base layer, a lower waterproof layer and a lower isolating layer from top to bottom. The invention discloses a preparation method of a high-temperature-resistant modified asphalt waterproof coiled material. The preparation method comprises the steps of preparing an APAO zeolite micro powder compound, preparing an asphalt mixture and preparing the waterproof coiled material. The waterproof coiled material is good in impermeability after hot rolling, the impermeability of the waterproof coiled material after hot rolling is tested according to the method in JC/T 974-2005, and different from the method in the standard, the test time is prolonged to 90 min, and the test result is that the waterproof coiled material is waterproof under 0.1 MPa in 90 min.

平面磁场梯度计

The invention discloses a plane magnetic filed gradientmeter, including a closed loop; a line splitting the closed loop into two ones the first and second ones; the line also splits the closed loop into NxM open loops which arrange in an N-line and M-row mode. One or many superconductive quantum interference devices are coupled with the line. It can compose 2D or arbitrary-order plane magnetic field gradientmeter; and many superconductive quantum interference devices are coupled with the line and their position is relatively flexible, able to enhance finished product rate; when used in detect magnetic field, its directionality is not strongly demanded.

Superconducting nanowire single-photon detector preparing method

The invention provides a superconducting nanowire single-photon detector preparing method. The method comprises the following steps: a hard die pattern which is consistent with a predetermined pattern is formed on a hard substrate, the hard die pattern is raised upwards from the basically-flat surface of the hard substrate, and the hard die pattern is transferred to a soft die to form a soft template through the hot padding process; a superconducting thin film layer made from superconducting material is provided, wherein the superconducting thin film layer is coated with a layer of ultraviolet curing adhesive layer; the pattern on the soft die is transferred to the ultraviolet curing adhesive layer through the ultraviolet padding process to form a mask pattern on the ultraviolet curing adhesive layer; and superconducting nanowire having the predetermined pattern are formed on the superconducting thin film layer by adopting the reactive ion etching process through the mask pattern. The method ...

Device and method for measuring susceptibility of nano magnetic liquid

The invention discloses a device for measuring the susceptibility of a nano magnetic liquid, and the device provided by the invention comprises a sample measuring unit, a sample control unit and a data analyzing and processing unit, wherein the sample measuring unit is used for measuring a sample to be measured; two capillaries which are made of the same material and are same in dimension are arranged on the sample control unit; one of the two capillaries is filled with the sample to be measured, and the other capillary is an empty test tube; the sample control unit enables the two test tubes to be alternately in and out the sample measuring unit; and the data analyzing and processing unit is used for collecting, storing and processing the data of the sample measuring unit and controlling the motion of the sample control unit. The invention also discloses a method for measuring the susceptibility of a nano magnetic liquid by utilizing the device provided by the invention.

Equalizing pulse external magnetic field adjustment device and method in high-temperature SQUID application

The invention discloses a regulating device for equalizing the pulse impressed field by means of electrical regulation in a low-field nuclear magnetic resonance system based on a high-temperature SQUID, and a regulating method for equalizing the pulse impressed field by the use of the device. The regulating method comprises the steps that a pair of back-rolled coils is connected in parallel in the pulse polarized field and a potential device connected in the coils in series is regulated for realizing the regulation of the magnetic field vertical to the SQUID. The method can realize the remoteequalizing regulation of the pulse polarized field and can also achieve quite high precision. The regulating device and the equalizing regulation method are quite effective for the low-field nuclear magnetic resonance system.

Method for non-in-situ plating noble metal membrane on high-temperature superconductivity ReBa2Cu3O7 thin film

Device and method for measuring AC susceptibility of nano magnetic liquid

The invention discloses a device for measuring the susceptibility of a nano magnetic liquid, and the device provided by the invention comprises a sample measuring unit, a sample control unit and a data analyzing and processing unit, wherein the sample measuring unit is used for measuring a sample to be measured; two capillaries which are made of the same material and are same in dimension are arranged on the sample control unit; one of the two capillaries is filled with the sample to be measured, and the other capillary is an empty test tube; the sample control unit enables the two test tubesto be alternately in and out the sample measuring unit; and the data analyzing and processing unit is used for collecting, storing and processing the data of the sample measuring unit and controllingthe motion of the sample control unit. The invention also discloses a method for measuring the susceptibility of a nano magnetic liquid by utilizing the device provided by the invention.

Preparation method of interdigital capacitor and method for forming adjacent evaporation patterns

The invention discloses a preparation method of an interdigital capacitor and a method for forming adjacent evaporation patterns. The preparation method comprises the steps of forming finger pairs on a substrate with vapor formed by an evaporation material, namely forming a cavity which is provided with an opening and a bottom wall provided by the substrate on the substrate, performing first evaporation on the substrate to allow the vapor to enter the cavity in a first direction and form a first evaporation film, allowing at least one part of first evaporation film to be formed on the bottom wall to form first fingers, performing second evaporation on the substrate to allow the vapor to enter the cavity in a second direction and form a second evaporation film, allowing at least one part of second evaporation film to be formed on the bottom wall of the cavity to form second fingers, and selecting the first direction and the second direction to allow the first evaporation film and the second ...

Planar second-order magnetic field gradient meter in new structure

The present invention relates to the field of superconductive quantum interference device (SQUID) technology. One double-closed loop detecting coil is adopted and the currents in the common part of the two closed loops is made to be proportional directly with PhiA-2B+PhiC. The detecting coil is coupled to SQUID to form the second-order magnetic field gradient meter. The present invention has simple structure, needs only the coupling between the SQUID with the line and no strict position requirement of the SQUID, and may have several SQUIDs coupled to the line for high qualified product rate.

Circuit for simulating non-reciprocal model

The invention provides a circuit for simulating a non-reciprocal model, comprising N first impedance elements and N + 1 second impedance elements, where the N + 1 second impedance elements are connected in series with each other, one end of the nth first impedance element in the N first impedance elements is connected between the nth second impedance element and the (n + 1) th second impedance element in the (N + 1) th second impedance elements, the other end of the nth first impedance element is grounded, the first impedance elements are capacitors, the second impedance elements are inductors, and the first impedance elements are capacitors. The first impedance element is an inductor and the second impedance element is a capacitor, or the first impedance element is an inductor and the second impedance element is a capacitor, the inductance value of the nth inductor is L0g-n, the capacitance value of the nth capacitor is C0gn, L0 and C0 are respectively a preset initial inductance value ...

Annealing method for producing large area two-side thallium series film

The invention discloses an annealing method for preparing large area double-faced thallium based membrane. The invention comprises the steps that a plurality of single crystal tablets which has the same thickness and the same material and crystal orientation with the substrate of the double-faced forehand membrane is adopted, two thallium source with the same shape and after high temperature solid reaction sintering and a piece of sample equipped with the double-faced forehand membrane for annealing are equidistantly divided along the vertical direction in a vertically symmetrical way, and the sample equipped with the double-faced forehand membrane is arranged in the middle of the thallium source and the center aimed at the center of the upper and the lower thallium source with larger area than the membrane; the above integral structure is reversed into a sealed crucible, and put into a pipe furnace together with the crucible; then the annealing is performed. The electrical property of ...

High-strength self-adhesive polyethylene polypropylene fiber composite waterproof coiled material and preparation method thereof

The invention relates to a high-strength self-adhesive polyethylene polypropylene fiber composite waterproof coiled material and a preparation method thereof. The high-strength self-adhesive polyethylene polypropylene fiber composite waterproof coiled material is compounded from a polyethylene polypropylene fiber composite waterproof coiled material body and a self-adhesive oil layer, wherein the modified self-adhesive oil is produced by matching high-quality 70# asphalt, SBS (styrene-butadiene-styrene) modifier styrene-butadiene rubber and the like; the self-adhesive oil, which is prepared from 70# petroleum building asphalt, styrene-butadiene rubber, a terpene resin, an anti-aging agent, a toughener and a filler by heating, stirring, grinding and other steps, has higher extension characteristic; and the high-strength self-adhesive polyethylene polypropylene fiber composite waterproof coiled material prepared by compounding the self-adhesive oil with the polyethylene polypropylene fiber ...

Annealing method for producing large area two-side thallium series film