4results about How to "Appropriate thickness" patented technology

The invention discloses an application and verification method of antisymmetric chiral metasurface and phase amplitude regulation and control, and belongs to the field of micro-nano optics, the antisymmetric chiral metasurface comprises a surface layer, a middle layer and a back plate layer which are sequentially arranged from top to bottom, and the surface layer is composed of a left semicircular ring and a right semicircular ring; the two ends of the side, facing the right half ring, of the left half ring are bent towards the circle center to form a first protrusion and a second protrusion, one end of the side, facing the left half ring, of the right half ring is bent towards the circle center to form a third protrusion, and the third protrusion and the first protrusion are symmetrically arranged about the circle center. The length of the third protrusion is equal to that of the first protrusion, and the length of the first protrusion is larger than that of the second protrusion. By adopting the application and verification method of the antisymmetric chiral metasurface and phase amplitude regulation and control, by breaking C2 (second-order rotation) symmetry and mirror symmetry, not only can spin decoupling phase control be realized through chiral phase, but also the amplitude of reflected waves can be adjusted by using circular dichroism.

The invention discloses an attached auricular point treatment patch and a preparation method thereof, and particularly relates to the technical field of medical devices, the attached auricular point treatment patch comprises a core medicine layer, a protective isolation layer and a fixing layer, the core medicine layer is covered with the protective isolation layer, and the fixing layer is attached to the other side of the protective isolation layer; the core medicine layer is prepared from the following raw materials in parts by weight: 5 to 20 parts of radix angelicae sinensis, 5 to 15 parts of radix achyranthis bidentatae, 3 to 10 parts of rhizoma gastrodiae, 3 to 8 parts of rhizoma atractylodis macrocephalae, 1 to 5 parts of radix ginseng, 2 to 6 parts of rhizoma chuanxiong, 0.5 to 3 parts of nano folium ginkgo extract, 0.5 to 2 parts of radix astragali seu hedysari extract, a viscous matrix accounting for 5 to 20 percent of the total weight and a penetration enhancer accounting for 1 to 5 percent of the total weight; and the protective isolation layer is made of a medical grade polyethylene or polypropylene film with the thickness of 0.01-0.06 mm. The auricular point treatment patch can stably and continuously release medicine and effectively permeate into auricular points to achieve a good treatment effect, meanwhile, the solubility and bioavailability of the medicine are remarkably improved, the treatment effect is enhanced, and the comfort level and the fitting degree are good.

The application discloses a preparation device of grass-like thread, a preparation method of grass-like thread, and application of the preparation device of grass-like thread in the preparation method of grass-like thread. The preparation device of the application comprises multiple rounding mechanisms, a twisting mechanism, and a storage device. In the preparation method of the application, grass-like material is rounded into single-strand grass-like thread, and the single-strand grass-like thread is twisted into grass-like thread. Through the device and the method of the application, the processing of the natural fibers can be realized without manual work, the technical problem of how to process the natural fibers without manual work is solved, and the efficiency is improved and the manpower is saved.

The utility model provides a water nozzle riveting welding structure of a liquid cooling plate. The water nozzle riveting and welding structure of the liquid cooling plate comprises a liquid cooling flat plate, a water nozzle and an expansion cone, a riveting welded junction is formed in the liquid cooling flat plate; an annular riveting boss is arranged on the end face of a water passing port of the water nozzle in a protruding mode, and a knocking part is arranged at the end, away from the annular riveting boss, of the water nozzle. A water passing port of the water nozzle is riveted to the riveting welded junction through the annular riveting boss; the expanding cone is arranged on the side, away from the water nozzle, of the riveting welded junction. The cone head of the expanding cone extends to the inner cavity of the water nozzle through the water passing port of the water nozzle and is opposite to the knocking part; due to the fact that the ratio of the diameter of the inner ring of the annular riveting boss to the diameter of the outer ring of the annular riveting boss is 14: 15, the rigidity of the annular riveting boss is reduced, meanwhile, the flexibility of the annular riveting boss is improved, and abrasion caused by rigid collision is reduced. And meanwhile, the peripheral wall of the cone head of the expanding cone abuts against the annular riveting boss, so that the water nozzle is easier to expand outwards and deform so as to be riveted to the riveting welded junction.