36 results about "Parylene C" patented technology

Thin parylene C membranes having smooth front sides and ultrathin regions (e.g., 0.01 μm to 5 μm thick) interspersed with thicker regions are disclosed. The back sides of the membranes can be rough compared with the smooth front sides. The membranes can be used in vitro to grow monolayers of cells in a laboratory or in vivo as surgically implantable growth layers, such as to replace the Bruch's membrane in the eye. The application further provides an implantable cage-like apparatus for culturing cells comprising the parylene membrane.

A coated coronary stent, comprising a stainless steel sent framework coated with a p1imer layer of Parylene C, and a rapamycin-polymer coating having substantially uniform thickness disposed on the stent framework, wherein the rapamycin-polymer coating comprises polybutyl methacrylate (PBMA), polyethylene-co-vinyl acetate (PEVA) and rapamycin, wherein substantially all of the rapamycin in the coating is in amorphous form and substantially unifom1ly dispersed within the rapamycin-polymer coating.

The invention discloses a flexible retina emboss micro-electrode chip in the technical field of a micro-electronic-mechanical-system and a manufacture method thereof. In the method, parylene C is used as a flexible substrate and an insulating material for preparing a micro-electrode array which is formed by the arrangement of a plurality of micro-electrode sensing elements; simultaneously, an electrode lead and a lead welding point are manufactured to form the flexible retina emboss micro-electrode chip which is planted into the retina part of a human eye, can realize the safe and effective contact with the neuron of the retina, effectively reduce the stimulation to a pulse current, reduce the inserting damage to a biological tissue caused by the planting of the micro-electrode and can improve the effect of electric simulating and neural signal recording, thereby better recovering the visual function. In the invention, the parylene C is used as the substrate of a flexible electrode; the excellent electric insulating performance and mechanical performance thereof can improve the biocompatibility of the micro-electrode chip to a larger extent and have good stability for a long period. In the invention, an MEMS technique is adopted, thus realizing the integration of a functional unit and the flexible substrate of the micro-electrode.

The invention relates to a multi-layer composite protection layer applied to PCB and a method. The multi-layer composite protection layer comprises a nano silicon dioxide coating, Parylene C coating,and epoxy resin coating which are arranged inside to outside, and the thickness of the Parylene C coating is 30-40 [mu]m. The application method comprises the steps of: 1) cleaning and dehumidifying the surface of a PCB; 2) socking the cleaned PCB into a nanosilicon dioxide liquid to obtain a PCB with a surface coated with nanosilicon dioxide; 3) coating a Parylene C material at the surface of thePCB with the surface coated with nanosilicon dioxide by employing a vacuum chemical vapor deposition method; and 4) obtaining the epoxy resin material at the surface of the PCB obtained in the step 3). The PCB is good in waterproof performance, can normally work in a soaking environment and has a good mechanical performance.

A micro electromechanical (MEMS) antenna (36) is positioned on one side of a substrate and is connected to a MEMS switch comprising a capacitor bridge (46) and to a transmission line (42) by means of a thru hole or via (48) which forms an electrically conducting path through the substrate. This arrangement provides a common ground plane for the antenna and switch and shields the switch from the electromagnetic radiation received or transmitted from the antenna. The switch may comprise a topmost metal layer which extends across a bridge structure formed by a polymer layer. The polymer layer comprises poly-monochloro-para-xylene (parylene-C). Homogeneous or heterogeneous antenna array structures are implemented. The antenna arrays may include one or more different type of antennas with for example different shapes, rotations and reflections.

The invention discloses an explosive foil integrated chip based on low-temperature co-fired ceramics and a preparation process thereof. Explosive foil integrated chip includes: ceramic substrate, metal layer, flyer layer, acceleration chamber, charge tank and explosive column, and also includes metal vias in the ceramic substrate, paste, and pad area on the back and Pd / A structure such as an Ag layer that facilitates connection with other parts. The ceramic substrate is used as a reflective backplane in the integrated chip; the metal layer includes three parts: bridge area, transition area and conduction band; the flyer layer includes ceramic flyer, Parylene C / W‑Ti / Cu composite flyer; the function of the acceleration chamber is to provide acceleration space for the flyer; the charging groove provides precise positioning for the placement of the explosive column. Compared with the prior art, the present invention has the advantages of using low-temperature co-fired ceramic technology to make the explosive foil detonator more integrated and smaller in volume, which can realize mass production, improve product consistency, and greatly reduce costs .

The invention belongs to the technical field of optical fiber sensing and trace gas detection, and relates to a membrane resonant gas sensor and a detection system based on polychlorop-xylene. The gas sensor adopts the structure of F-P interferometer, and the F-P cavity of the F-P interferometer is also the non-resonant photoacoustic cell of the photoacoustic system. Parylene-C has a low Young's modulus and a large elongation at break. The Parylene-C film prepared by vacuum vapor-phase polymerization deposition has the characteristics of strong conformality and good deposition uniformity. Therefore, vacuum vapor-phase polymerization is used. The Parylene-C film prepared by the deposition method can simultaneously have the characteristics of large radius and thin thickness. The natural resonance frequency of the F-P interferometer is proportional to the thickness of the diaphragm and inversely proportional to the square of the diaphragm radius, so the resonance frequency of the F-P interferometer can be as low as tens of Hz. The invention provides a new technical means for high-sensitivity long-distance gas telemetry in a narrow space.