119 results about "Mica substrate" patented technology

The invention provides a high-saturation iron-series pigment and a production method thereof. The high-saturation iron-series pigment is characterized in that: mica is taken as a substrate, high-refractivity substances and low-refractivity substances are alternatively coated on the substrate, the low-refractivity substances include silicon dioxide, aluminum trioxide and diboron trioxide, and the high-refractivity substances include titanium dioxide, tin dioxide, ferric oxide, cobalt oxide, zirconium dioxide and dichromium trioxide. The production method of the pigment is mainly characterized in that: a soluble salt which corresponds to each of the substances is hydrolyzed and precipitated on the surface of the mica substrate at an appropriate pH value, and the precipitated soluble salt is calcined at the temperature of 450-750 DEG C, so that a coating substance is transformed into an oxide. Compared with a synthetic silicon dioxide substrate, the method has the advantages of higher convenience for drawing materials, low price and reduction in the production cost of the high-saturation iron-series pigment. A hydrolyzing coating process is easy to operate and control, the thickness of a coating layer can be controlled through the color phase change of the pigment, and a production process is simple.

The method to induce monocular DNA directed mutation by atomic force microscope in biotechnology field comprises steps shown follow: (1) preparing mica substrate modified by aminosilane; (2) labelling the end of DNA sample; (3) straightening and preparing the labelled sample; (4) inducing mutation; (5) collecting and separating the induced DNA segment; (6) amplifying monocell; (7) detecting amplification by agarose gel electrophoresis; (8) sequenching sample DNA, and screening the mutated sample. The advantages of this invention include: precise location, high resolution, high efficiency, and simple operation.