Abstract: The invention provides a light-stimuli responsive coordination polymer, and preparation method and use thereof. The coordination polymer has a chemical formula of [Zn(tkpvb) (Fb)2]n1, wherein Fb represents p-fluorobenzoate, tkpvb represents 1,2,4,5-tetrakis((E)-2-(4-pyridyl)vinyl)benzene, and n=3000-60000; and crystallographic parameters of: (1) crystal system: monoclinic system; (2) space group: C2/c; (3) a=28.577(3)?, b=7.4084(6) ?, c=22.612(3) ?, ?=126.771(2)°, and V=3834.8(7) ?3; (4) Z=4; and (5) F(000)=1720, R1=0.0440, wR2=0.1042, and GOF=1.047. The method is simple, and has mild reaction conditions, and fast light conversion rate. The means of light-stimuli responsiveness are non-contact and non-damage type, the volume adjustment is highly accurate, and the whole adjustment process does not require any chemical reagents, and is safe and reliable. Photoactuators can complete a variety of behaviors under the irradiation of ultraviolet light having a wavelength of 365 nm.

Abstract: The present invention provides a wireless optical communication data transmission apparatus and method, including a transmit module and a receive module, where the transmit module includes a transmission gate, and the transmit module is configured to convert serial data into multipath control signals to control the transmission gate to output an electrical signal, convert the electrical signal into an optical signal, and transmit the optical signal to the receive module; and the receive module includes a peak value detector and a comparator group, and the receive module is configured to convert the received optical signal into the electrical signal and output the serial data after threshold determination by the comparator group, where the peak value detector provides a reference voltage to the comparator group according to the received electrical signal, and the comparator group performs voltage division according to the reference voltage to determine a threshold.

Abstract: The present invention relates to a method for preparing a ?-lactam derivative, wherein a substituted N-quinoline-3-butenamide derivative is used as a substrate to react with a toluene derivative or a heterocyclic derivative at 90-150° C. in the presence of DTBP and a copper salt catalyst, to prepare a ?-lactam derivative. According to the method of the present invention, a variety of ?-lactam derivatives can be obtained with a high yield. The reaction of the present invention has mild reaction conditions, and simple reaction operation and post-treatment process, and is suitable for large-scale production.

Abstract: A method and device for milling a large-diameter aspheric surface by using a splicing method and a polishing method to solve the problems of large time consumption and serious tool wear in the machining of a meter-scale large-diameter aspheric surface are disclosed. where an aspheric surface is discretized into a series of rings with different radii, and the rings are sequentially machined via generating cutting by using an annular grinding wheel tool with an outer diameter less than ¼ of a diameter of the aspheric surface; the rings are equally spaced, there are a total of N rings, and a width of any ring is jointly determined by the Nth ring, the (N?1)th ring, positioning accuracy and a generatrix equation of the aspheric surface; and the aspheric surface is enveloped by a large number of rings. A contact area between the tool and a workpiece surface is rings.

Abstract: The present invention provides a joint optimization method and system for delay and spectrum occupation in a cloud-edge collaborative network. The method includes: initializing a cloud-edge collaborative network, and generating a set of user requests; establishing a target function of minimum average end-to-end delay and minimum spectrum slot occupation of a user request; during processing of each user request based on the target function, sequentially determining whether a node and path selection uniqueness constraint, a mobile edge computing (MEC) server load constraint, a spectrum resource occupation and uniqueness constraint, a spectrum continuity constraint, and a spectrum consistency constraint are satisfied, where if all constraints are satisfied, the user request is successfully processed, and the process turns to step S4; or if any constraint is not satisfied, the user request fails to be processed; and calculating average end-to-end delay and spectrum resource occupancy of the user request.

Abstract: The invention provides a curved-slit imaging spectrometer, wherein a fiber bundle transfers a straight line image of a front objective lens to a curved slit, and the front objective lens doesn't need to have a curved image plane to directly abut the spectrometer, so that the system is less complicated, and the front objective lens and spectrometer have a simple structure. The arc-shaped or approximately arc-shaped curved slit matches the optimum imaging circle of the Offner-type spectrometer, thereby achieving an extra-long slit. The arced slit is 5 to 10 times longer than the straight slit of the classical Offner-type spectrometer. In the case of a compact size, the length of the slit can be greater than 100 mm. Also, the same spectral response function applies in different fields of view while presenting desirable imaging quality.

Abstract: The present invention relates to the technical field of photosensitizers, and particularly to a near-infrared nano-photosensitizer and a preparation method and use thereof. The near-infrared nano-photosensitizer in the present invention is modified by conjugation extension of the boron dipyrromethene core, achieving absorption and emission spectra close to the near-infrared region. A polyfluoroalkyl group and a polyethylene glycol group are introduced to the boron dipyrromethene structure to obtain an amphiphilic photosensitizer. By means of the strong fluorine-fluorine interaction between the polyfluoroalkyl group and the hydrophilic interaction of the polyethylene glycol group, a nano-photosensitive micelle with an ultra-low CMC value is ultimately constructed. Boron dipyrromethene is induced by fluorine-fluorine interaction to undergo J-aggregation, causing the maximum absorption peak to red-shift to the near-infrared region, beneficial to the deep phototherapy of tumors.

Abstract: The present invention provides a “living” radical polymerization method for a vinyl monomer by near-infrared photothermal conversion. The method comprises irradiating a reactor with near-infrared light of 750-850 nm, wherein the reactor has a first chamber and a second chamber that are isolated from each other, the first chamber contains an organic solution of a near-infrared light responsive croconaine dye, and the second chamber is provided with a closed reaction flask containing a reaction solution, the reaction solution comprises a vinyl monomer, two or more of an ATRP initiator, an ATRP ligand, an ATRP catalyst, an RAFT reagent, a thermal initiator, and an additive, and an organic solvent; and the near-infrared light responsive dye converts the near-infrared light into heat energy, by which the reactor is heated to 50-100° C. to polymerize the monomer in the reaction solution, to obtain polymers with controlled molecular weights and molecular weight distributions.

Abstract: The invention relates to a method for preparing an anti-counterfeiting modal fiber, including: mixing a pulp stock solution with a cellulose catalyst, alkalizing, aging, sulfonating, and then dissolving the pulp stock solution in an alkaline solution to obtain a treatment solution; mixing the treatment solution with multiple amino acid-metal chelates, filtering, defoaming and ripening to obtain a spinning stock solution; and mixing the spinning stock solution with a spinning bath additive, and wet spinning, followed by drafting, defoaming, desulfurizing, water washing, and other post-treatments, to obtain an anti-counterfeiting modal fiber, wherein the amino acid metal-chelates account for 0.5%-1.5% by weight of the spinning stock solution. Amino acid-metal chelates are used to anti-counterfeit and encrypt the modal fibers, and the anti-counterfeiting and encrypting is involved in the spinning stock solution of modal fibers.

Abstract: A multi-orientation fingertip planar tactile feedback device includes a planar tactile feedback actuator. The planar tactile feedback actuator includes a holder and a feedback mechanism, a holding hole and an accommodating cavity are provided in the holder, one end of the holding hole penetrates through the holder, the other end is communicated with the accommodating cavity, the feedback mechanism includes a plurality of feedback parts that are arranged on cavity walls of the accommodating cavity respectively, and each feedback part includes a base, an air bag block and a baffle which are sequentially connected. A structure is simple; a finger touch force can be adjusted; five pairs of electrified coils are arranged, and force feedback vector synthesis can be performed therebetween; a direction of the force feedback generated by the electrified coil can be consistent with a direction of tactile feedback of the distal finger segment by the baffle.

Abstract: A laboratory zebrafish autism behavioral model apparatus is provided. The laboratory zebrafish autism behavioral model apparatus comprises a model body, wherein the model body is divided into a plurality of experimental units, and each of the experimental units has a cuboid structure with completely identical shapes; a free swimming area, a stimulus area, and a normal non-stimulus area are formed on each of the experimental units; the stimulus area and the normal non-stimulus area are located on two sides of the free swimming area, respectively, and the free swimming area, the stimulus area, and the normal non-stimulus area are interconnected via mesh openings. The zebrafish autism behavioral model apparatus facilitates further exploration of autism etiology, effectively resolving interference between the stimulus area and the zebrafish's innate thigmotactic behavior, reducing experimental errors, saving time, and minimizing instrument wear and costs.

Abstract: A method for preparing an aramid fiber electrochemical capacitor includes (1) immersing aramid fiber bundles in an aqueous solution; (2) adding polyvinylpyrrolidone into a silver ammonia solution to obtain a solution C, adding an aqueous glucose solution to the solution C to obtain aramid fiber bundles coated with silver nanoparticles; (3) adding the aramid fiber bundles into an aqueous solution containing ?-(2,3-glycidoxy) propyltrimethoxysilane; (4) adding the aramid fiber bundles coated by silver nanoparticles with epoxy groups into an ethanol containing carbon nanotubes with carboxyl groups; (5) adding the aramid fiber bundles with two-layered coatings into an aqueous solution containing pyrrole; (6) heating a mixture of a polyvinyl alcohol, an acid, and water to obtain a polyvinyl alcohol gel, immersing two strands of the aramid fiber bundles, carbon nanotubes and silver nanoparticle in the polyvinyl alcohol gel, and twisting the two strands together to obtain the aramid fiber electrochemical capacitor.

Abstract: A method for preparing diazoxide includes reacting o-aminobenzenesulfonamide with N-chlorosuccinimide in a chlorine solvent to obtain 2-amino-5-chlorobenzenesulfonamide, mixing the 2-amino-5-chlorobenzenesulfonamide, an imidazole salt and an amide solvent, then heating same for reaction so as to obtain diazoxide; or mixing o-aminobenzenesulfonamide, an imidazole salt and an amide solvent, then heating same for reaction to obtain a compound IV; then reacting the compound IV with N-chlorosuccinimide in a chlorine solvent to obtain diazoxide. The application of imidazole hydrochloride as a catalyst in preparing diazoxide is also disclosed. The present invention avoids the use of highly corrosive and toxic chlorosulfonyl isocyanate, a strong acid (sulfuric acid), and a high reaction temperature (240-250° C.

Abstract: This invention relates to a self-excited oscillation suppression device and method for the power amplifying circuit, belonging to the field of electronic technology. Said power amplifying circuit includes a FET and a feedback loop. Said device includes: a first compensation circuit which is connected between a drain and a gate of the FET and a second compensation circuit which is connected in parallel with a feedback resistor of said feedback loop. It can solve self-excited oscillation caused by deep negative feedback in the existing power amplifying circuit. The first compensation circuit can shift the open-loop gain curve forward as a whole, and the second compensation circuit can speed up the closure of the feedback gain curve and the open-loop gain curve so that the two curves will close up before the self-excited oscillation; the self-excited oscillation will be suppressed, and the stability of the power amplifying circuit will be improved.

Abstract: The present invention provides a fluorine-containing liquid crystal polymer of Formula (1). The present invention also discloses a fluorine-containing liquid crystal elastomer, which comprises a copolymer of a fluorine-containing liquid crystal polymer of Formula (1) with a near-infrared dye of Formula (2). The fluorine-containing liquid crystal elastomer of the present invention shrinks due to the photothermal conversion effect of the material under the irradiation of near-infrared light, and thus is widely applicable to the field of actuators. The fluorine-containing liquid crystal polymer of the present invention introduces fluorine-containing segments into the cross-linked network of the liquid crystal polymer, to improve the mechanical performance of the material, and greatly extend the service time of light-controlled actuators.

Abstract: The invention provides a wide-aperture spherical primary mirror off-axis afocal optical system, including a primary mirror, a secondary mirror and an aberration compensation mirror group. The primary mirror is a spherical reflector, the secondary mirror are higher-order aspherical reflectors. The primary mirror and the secondary mirror form an off-axis two-mirror system to compress the beam aperture. The aberration compensation mirror group is a coaxial reflective system that is used off-axis. The aberration compensation mirror group has focal power to produce compensation aberrations. The incident beam passes through and is reflected by the primary mirror and secondary mirror sequentially and enters the aberration compensation mirror group thereafter.

Abstract: The present invention relates to an oligomer-based organic battery materials, cathode active material, cathode and secondary battery comprising such material, and a process for preparing such materials.

Abstract: A high-grafting density cyclic comb shaped polymer and its preparation method therefor. The method comprises the following steps: 1) synthesizing linear poly(pentafluorophenyl 4-vinylbenzoate) (l-PPF4VB4.0k); 2) performing photo-induced cyclization on the linear polymer to prepare the cyclic polymer (c-PPF4VB4.0k); 3) performing post modification on the cyclic polymer c-PPF4VB4.0k by using small molecules to prepare a functionalized cyclic polymer (c-P1); 4) then performing polymer post modification on the cyclic polymer (c-P1) by using an efficient click reaction to construct the high-grafting density cyclic comb shaped polymer (c-P1-g-PS); and 5) directly performing polymer post modification on the cyclic polymer c-PPF4VB4.0k by using macromolecules to construct a high-grafting density cyclic comb shaped polymer (c-PPF4VB4.0k-g-PEG), the obtained cyclic comb shaped polymer still remaining the characteristic of a narrow molecular weight distribution.

Abstract: An embodiment of the present invention discloses a repair system for a planetary exploration parachute. The repair system includes a folding piece and a fuse, the fuse is provided in the folding piece, a sensing signal for reflecting an impact force of dust is received by the fuse, fusing is generated in the fuse when the sensing signal is greater than a preset threshold, and the folding piece is changed from a folded state to an unfolded state after the fusing is generated in the fuse, so as to automatically repair a damaged part of the parachute.

Abstract: The present invention provides a single-gate field effect transistor device and a method for modulating the drive current thereof. The field effect transistor comprises an active layer, a source region and a drain region formed at two sides of the active layer, and a channel region located between the source region and the drain region. The field effect transistor device is configured as follows: when the transistor is turned off, a second channel of depletion-mode spontaneously forms in the channel region, and the second channel does not connect the source region and the drain region; when the transistor is turned on, the second channel and a first channel of the same polarity as the second channel are formed in the channel region; at least one of the first channel and the second channel injects carriers into the other channel so that current conduction occurs between the source and the drain and the carriers of the second channel contribute to the on-state current of the transistor.