47results about How to "Uniform surface structure" patented technology

A fine structure body comprising first fine metal particles, which have head regions projected upwardly from a surface of a base body, is utilized. A substance capable of undergoing specific binding with a test body is fixed to the head regions of the first fine metal particles. Second fine metal particles, to which a substance capable of undergoing specific binding with the test body has been fixed, are dispersed in a sample liquid. The test body is detected from variation of a resonance wavelength of localized plasmon resonance, which variation occurs when the test body is adsorbed to the surface of the fine structure body by being sandwiched between the substance fixed to the first fine metal particle and the substance fixed to the second fine metal particle.

The invention relates to a preparation method of a transparent super-hydrophobic zinc oxide coating on a glass substrate. The preparation method comprises the following steps of a, substrate pretreatment; b, zinc oxide solution preparation; c, zinc oxide coating preparation; and d, zinc oxide coating surface modification. Compared with the prior art, the preparation method has the beneficial effects of simple equipment process, low cost and mild reaction condition and is beneficial to large-scale industrial production. The transparent super-hydrophobic zinc oxide coating prepared by using the method has excellent hydrophobicity and transparency; the contact angle is larger than 160 degrees, the rolling angle is smaller than 8 degrees, and water drops can freely roll on the coating, so that the transparent super-hydrophobic zinc oxide coating has relatively good self-cleaning performance; and the light transmittance is approach to 90% which is close to that of blank glass, so that the transparent super-hydrophobic zinc oxide coating has favorable visible light transmittance. A surface modifier used in the preparation method is an alkyl silane coupling agent instead of a fluorinated compound, so that the cost is low, the environment pollution is relatively low, and the modified coating is relatively stable.

The invention relates to a master device which can be used in a method for producing a recording medium. A substantially spiralling or concentrically extending main track structure and at least one substantially spiralling or concentrically extending secondary track structure are configured on the master device. The secondary track structure is arranged at least on one side of the master track structure, and the secondary structure has disruptions varying an optically detectable surface property of the recording medium to such an extent that a first auxiliary information is produced on the recording medium.

The invention provides a preparation method of a double-layer self-assembly lubricating film and relates to a preparation method of a novel double-layer self-assembly film formed by 1,2-Bis(triethoxysilyl)ethane and a low-surface-energy silane coupling agent. The method comprises the steps that single crystal silicon wafers are cut and cleaned and then are subjected to oxidation treatment; and the processed silicon wafers are immersed into 1,2-Bis(triethoxysilyl)ethane hydrolysate, and a first-layer film is prepared; and the obtained film is immersed into a low-surface-energy silane coupling agent solution again after being cleaned and dried, and deposition of a second-layer film is carried out through active groups on the surface of the first-layer film. Instruments and equipment involved in the preparation method are simple, operation is easy during the process, and the obtained double-layer films are of a stable and ordered structure. Compared with a single-layer film of the low-surface-energy silane coupling agent, the double-layer films can maintain a low friction coefficient, and the adhesion resistance and abrasion resistance of the double-layer self-assembly lubricating film can be effectively improved. The double-layer film is expected to become an effective means of solving the problems of lubrication and protection of the surfaces of devices in micro electro-mechanical systems.

The invention provides a method for preparing a single pure-phase bismuth ferrite material based on ion compensation, which belongs to the field of ceramic material preparation. First prepare the bismuth ferrite ceramic reaction mixture, and perform the first pre-sintering after drying; then add 0.3-0.7wt% bismuth oxide through the second ball mill for ion compensation, and perform the second pre-sintering after drying; Add 0.2-0.4wt% bismuth oxide for ion compensation by ball milling, sinter at 810-835°C for 0.5-1.5h after drying, and naturally cool to room temperature with the furnace to obtain a single-phase pure-phase bismuth ferrite material. The present invention uses bismuth oxide and iron oxide as raw materials, and adopts three-step sintering and two ion compensations to prepare a single pure-phase bismuth ferrite material, so as to solve the technical problem that bismuth oxide is volatile and causes component segregation in the process of preparing bismuth ferrite. A single pure phase bismuth ferrite material was prepared.