33results about How to "With optical properties" patented technology

This invention provides a method for low-refractive index film formation, which can form a thin film having a uniform composition distribution within the film and a low-refractive index, a low-refractive index film formed by the method for low-refractive index film formation, and an antireflection film using the low-refractive index film. The method for low-refractive index film formation comprises forming a low-refractive index film formed of MgF2-SiO2 on a substrate (11) by reactive sputtering. Targets (4A, 4B) as a sinter of MgF2-SiO2 are provided. An alternating voltage having a frequencyof 20 to 90 kHz is applied across the substrate (11) and the targets (4A, 4B) under a mixed gas atmosphere composed of inert gas and O2 for sputtering deposition.

The invention relates to the technical field of glass, specifically to a mildewproof glass. The mildewproof glass comprises the following components in parts by weight: 70 to 75 parts of SiO2, 15 to 18 parts of B2O3, 8 to 10 parts of Al2O3, 25 to 28 parts of Na2O2, 0.05 to 0.1 part of SrO, 5 to 10 parts of BaO, 0.5 to 0.8 part of ZnO, 0.3 to 0.5 part of CeO2 and 0.2 to 0.5 part of CuCl.

The invention discloses an acupuncture needle. The acupuncture needle comprises a needle point, a needle body and a needle handle, wherein the needle point is integrally connected to the front end of the needle body, the rear end of the needle body is fixedly nested in the needle handle, the needle point and the needle body are made from a stainless-steel material, and the needle handle is made from a macromolecular material. The macromolecular material is prepared from the following ingredients in parts by weight: 70-80 parts of polyethylene, 20-30 parts of polymethyl methacrylate, 5-10 parts of photostabilizer, 3-8 parts of glass fibers, 5-15 parts of filler and 5-10 parts of dispersant, wherein the photostabilizer contains nano-titania and nano zinc oxide which are in the weight ratio of 1: (0.5 to 2), and the filler contains nano calcium carbonate and nano-silica which are in the weight ratio of 1: (2 to 5). The acupuncture needle has the beneficial effects that the needle handle of the acupuncture needle has good oxidation resistance.

The invention discloses a device for a magnetic nanoparticle self-assembly photonic crystal fiber, which comprises a wide-spectrum laser, a single-mode fiber, a trace liquid injector, a liquid inlet, a quartz capillary, a left high-voltage electromagnetic coil, a right high-voltage electromagnetic coil, a high-power microscopic observer, an ultraviolet light curing device, a liquid outlet, a trace liquid collector and a detector. According to the invention, a UV glue liquid containing magnetic nanoparticles is injected into a the quartz capillary by using the trace biological injector, the magnetic nanoparticles are enabled to accomplish a periodically arranged photonic crystal structure with the aid of a high-frequency magnetic field, the self-assembly structure and morphology of the nanoparticles are monitored in real time by using the high-power microscopic observer, variations of a transmission spectrum are monitored in real time through the wide-spectrum laser and the detector, and the ultraviolet light curing device is started to acquire a self-assembly photonic crystal fiber. Compared with a traditional photonic crystal fiber manufacturing process, the method disclosed by the invention is low in cost, high in preparation speed, simple in required equipment, flexible and controllable in fiber parameter and capable of saving the manufacturing cost of the photonic crystal fiber.

The invention relates to a preparation method of a NaV2O5 crystal material with right angle morphology. The method comprises the following steps: a), dissolving an aromatic acid organic matter in water, adding a sodium hydroxide solution under the condition of stirring at room temperature, adding a solvent, and stirring for 40-60 minutes at room temperature so as to obtain an evenly mixed solution; b), adding ammonium metavanadate in the mixture so as to obtain a yellow and transparent mixed liquid, transferring the mixture into a stainless steel reaction kettle with a polytetrafluoroethylenelining after stirring for 3 hours, and then placing the reaction kettle in a constant-temperature drying oven of 150-200 DEG C to age for 2-60 days; and c), taking out and filtering the mixture finally obtained in the step b), drying the mixture in the constant-temperature drying oven of 40-60 DEG C so as to finally obtain the NaV2O5 crystal material with a right angle L shape. In the preparationmethod provided by the invention, ammonium metavanadate is adopted as a reactant, an alkaline solvent system of the organic matter in water / absolute ethyl alcohol is used, thus the preparation methodis environment-friendly, has simple preparation process and utilizes simple equipment, and the obtained NaV2O5 crystal material with L shape can be used for research on nano optical devices.

The invention discloses a high-strength permeable concrete suitable for sponge city construction and a preparation method thereof, specifically relates to the technical field of concrete materials, including: cement, composite fiber, composite reinforcing agent, water, water reducing agent, and quick-setting early-strength agent and aggregate. The combined use of composite fiber and composite reinforcing agent in the formula of the present invention can effectively strengthen the strength and water permeability of concrete; the combined use of glass fiber, basalt fiber and polypropylene fiber can further strengthen the internal structural strength of concrete, and at the same time the composite fiber The fiber network is formed inside the concrete, which can effectively strengthen the high water permeability of the concrete. The combination of nano-silica, nano-zirconium diboride powder and nano-silicon nitride in the composite reinforcing agent is used to modify the composite fiber, which can effectively Strengthen the structural strength and self-performance of composite fibers, thereby improving the structural strength and water permeability of concrete.