40 results about "Crystal cluster" patented technology

The invention relates to an HT690 steel plate capable of being subjected to high heat inputwelding and a manufacturing method thereof. A component system treated by low C-high Mn-(Nb+V+B) microalloying-ultramicro Ti is adopted, the acid-soluble Als content in steel is properly improved, the Als is not less than (Mn equivalent / C)*(Ntotal-0.292Ti), (Mn equivalent) / C is between 20 and 40, Pcm is notmore than 0.205 percent, the Ti / N is between 2.0 and 4.0, (Cu+Ni+Mo+Cr) is alloyed and Ni / Cu is not less than 1.0, the Ca is treated and the Ca / S ratio is between 0.80 and 3.00 and the F*DI index is controlled to be not less than 0.80*finished steel plate thickness, a TMCP (Thermo-Mechanical Control Process) and a tempering process are optimized to ensure that the microscopic structure of a finished steel plate is fine tempering bainite, and the average crystal cluster size is below 25mum. The steel plate can bear high heat input welding at the same time of obtaining the properties of uniformand excellent obdurability and strong plasticity matching, is especially suitable for large steel structures of a hydroelectric pressure water pipe, a vortex, a sea platform and the like, and can realize low-cost and stable batch industrialized production.

A micro-roughened electrodeposited copper foil and a copper foil substrate are provided. The micro-roughened electrodeposited copper foil includes a micro-rough surface. The micro-rough surface has a plurality of peaks, a plurality of grooves and a plurality of micro-crystal clusters. Each of the grooves has a U-shaped or V-shaped cross-section profile, and the grooves have an average maximum width between 0.1 μm and 4 μm and an average depth less than or equal to 1.5 μm. Each of the micro-crystal clusters is composed of a plurality of micro-crystals each having an average diameter less than or equal to 0.5 μm grouped together. The micro-rough surface of the micro-roughened electrodeposited copper foil has an Rlr value less than 1.3. The micro-rough surface has good bonding strength relative to a substrate, and the copper foil substrate has good insertion loss performance to significantly reduce signal loss.

The invention relates to a protein crystallization method based on constant current diffusion, an open constant current diffusion protein crystallization array chip and a manufacturing method and application thereof. The open constant current diffusion protein crystallization array chip includes a substrate and a substrate fixed on the substrate; several hole-shaped protein crystallization units communicating with the external environment are distributed on the substrate to form an array of crystallization units; Several microfluidic main channels are distributed; each crystallization single-pass radial microfluidic diffusion channel communicates with the corresponding microfluidic main channel. The protein solution was injected into the microfluidic main channel in a constant flow, while the precipitant solution in the open crystallization unit was static. The advantages of the present invention are: 1. A high protein concentration gradient is maintained between the microfluidic main channel and the crystallization unit, so that protein molecules are continuously diffused into the crystallization unit, so that the protein crystallization speed is fast and the crystal cluster density is high; 2. The protein crystals formed in the crystallization unit are not subject to shear force, and can be extracted and analyzed conveniently; 3. The protein consumption is small, the operation is flexible, and it is suitable for high-pass screening of crystallization conditions; 4. The chip is simple to manufacture and the structure Compact, low cost, and mass-producible.

A process for producing a crystalline thin film is provided which comprises melting and resolidifying a starting thin film having regions different in the state coexisting continuously. A small region of the starting thin film has a size distribution of number concentration of crystal grains or crystalline clusters different from that of the surrounding region. In the process of melting and resolidification, the crystal grain grows preferentially in the one region to control the location of the crystal grain in the crystalline thin film.