33results about How to "Roughness is easy to control" patented technology

A packaging structure provided by the invention includes a substrate having a crystal grain receiving through hole, a contact through hole and a first contact pad; the crystal grains are placed in the crystal grain receiving through hole, wherein the crystal grains have a lenticule area. A transparent cover covers the lenticule area. Peripheral materials are formed below the crystal grains and fill a gap between the entering crystal grains and a side wall of the crystal grain receiving through hole. A dielectric layer is formed above the crystal grains and the substrate. A re-distribution layer is formed on the dielectric layer to couple the first contact pad. A protection layer is formed on the re-distribution layer. A second contact pad is formed on a lower surface of the substrate and below the contact through hole. And a transparent substrate is formed above the protection layer.

The invention relates to a mixing potential NO2 sensor based on sand-blast machining type porous YSZ (Yttria Stabilized Zirconia) base plate and a preparation method of the sensor, and belongs to the technical field of gas sensors. The mixing potential NO2 sensor is mainly used for detecting automobile tail gas exhaust and sequentially comprises an Al2O3 ceramic plate, a YSZ base plate, a reference electrode and a sensitive electrode, wherein the Al2O3 ceramic plate is provided with a Pt heating electrode; the YSZ base plate has a rough porous surface; the reference electrode is made of strip-shaped Pt; the sensitive electrode is made of strip-shaped NiO; the two electrodes are mutually discretely and symmetrically prepared on the rough surface of the YSZ base plate; the lower surface of the YSZ base plate is adhered to the Al2O3 ceramic plate together. According to the mixing potential NO2 sensor, the sand-blast machining type YSZ base plate is utilized as electrolyte, and a rough porous structure of the surface of the sand-blast machining type YSZ base plate increases the contact of gas to be tested and the electrolyte so as to increase reaction activity sites, so that the purpose of enhancing the sensitivity of the sensor is achieved.

The invention provides a dental implant including a dental implant body and an abutment part, wherein the abutment part is arranged on the dental implant body, and the abutment part is formed integrally with the dental implant body. The invention also provides a 3D printing preparation method of the dental implant. The 3D printing preparation method disclosed by the invention can overcome shortages of an individuated dental implant manufactured by a conventional mechanical processing technology, effectively solves the processing technology problems of a complex dental implant structure, at the same time, makes the design form and type of the dental implant more open, improves the processing efficiency, greatly reduces the processing cost, and reduces the post-treatment process. The requirement on the equipment accuracy is not as high as mechanical-processed equipment, the roughness degree of an outer surface is controllable, and surface sandblasting treatment procedures are reduced. An integrally-formed structure of the dental implant provided by the invention can avoid the micro leakage problem of a traditional two-section connection. The dental implant provided by the invention is more beneficial for immediate implantation, reduces bone loss, reduces the operation process, and allows a operation to become a minimally invasive operation or even a noninvasive operation.

The invention provides a clutch main cylinder which comprises a main cylinder main body, a first leather cup, a second leather cup, a piston and a return spring. A cavity body is arranged inside the main cylinder main body. An oil inlet is formed in the main cylinder main body which is provided with a first ring-shaped groove and a second ring-shaped groove, wherein the first ring-shaped groove and the second ring-shaped groove are arranged at two sides of the oil inlet. The first leather cup is arranged in the first ring-shaped groove. The second leather cup is arranged in the second ring-shaped groove. The piston is arranged on the inner sides of the first leather cup and the second leather cup. A first end of the piston is connected with a push rod at a first end of the main cylinder main body. An inner hole is formed in the piston and opens towards a second end of the piston. A compensation hole is formed in the side wall which is provided with the inner hole on the piston. When the piston is located at the first end of the main cylinder main body, the compensation hole is located between the first leather cup and the second leather cup and is communicated with the oil inlet. A first end of the return spring is fixed at a second end of the main cylinder main body. A second end of the return spring is contained in the inner hole of the piston. The clutch main cylinder effectively solves the problems that due to the fact that a sealing part frequently rubs the cylinder body, the sealing part is prone to abrasion.

The invention relates to a thermoelectric battery pack, comprising upper and lower casings, heat transfer layers of the upper and lower casings, and thermoelectric battery units; A number of groove-shaped positioning structures for the thermoelectric battery unit, whereby the upper case and the lower case can be embedded with thermoelectric battery units arranged in a 3×3 arrangement, or connected in parallel or in series, or mixed in parallel and in series; each thermoelectric battery unit is equipped with Positive and negative poles and temperature sensors; there are upper and lower cushioning heat conduction and shock absorbing pads in the gap between the thermoelectric battery unit and the upper and lower shells; the upper and lower shells are connected by screw joints or spot welding to form a battery pack as a whole. The invention is reasonably strong, sealed and shock-resistant through structural design; through grinding and polishing the working surface and adjusting the parallelism, the parallelism and precision of the working surfaces of the upper and lower shells are guaranteed and has low thermal resistance; the production and assembly are convenient and easy to use , long working life, can be actively promoted and applied.