Abstract: The present invention relates to a bioactive glass material, an oral care composition, toothpaste, and preparation methods therefor. The bioactive glass material belongs to a Na2O—CaO—SiO2—P2O5 system, and includes, in percentage by weight: 40-60% of SiO2, 1-10% of P2O5, 18-30% of CaO, and 10-30% of Na2O; and an X-ray diffraction pattern of the bioactive glass material includes diffraction peaks at the following 2? angle values: 20.2±0.2°, 23.8±0.2°, 26.5±0.2°, 26.8±0.2°, 33.6±0.2°, 34.2±0.2°, and 48.6±0.2°.

Abstract: A curved paper box for a paper shredder having a main part, the main part being hollow to form a paper cavity which bends downwards, and openings being formed in an upper end and a lower end of the paper cavity; and having a plurality of paper holding blocks disposed on the main part side by side and located on a side provided with a lower opening of the paper cavity, first paper holding slopes being disposed at upper ends of the paper holding blocks towards the lower opening of the paper cavity. The curved paper box is shaped to bend paper entering the paper cavity from an upper opening of the paper cavity downwards along the paper cavity and has a lower end of the paper abut against the first paper holding slopes.

Abstract: This application discloses a camera module and an electronic device. The camera module includes a photosensitive chip, a first lens barrel, a first lens, a rotating assembly, an elastic member, and a drive mechanism. The first lens barrel is provided with the first lens that is disposed opposite the photosensitive chip. The rotating assembly fits around the first lens barrel, and is connected to the rotating assembly via a first fitting convex portion and a first spiral guide slot. The rotating assembly includes a body member and a transmission member that are disposed separately. A first end of the elastic member is connected to the body member, and a second end of the elastic member is connected to the transmission member. The drive mechanism is connected to the transmission member, and the drive mechanism drives, via the transmission member, the elastic member, and the body member in turn.

Abstract: A paper shredder capable of feeding paper laterally, a paper holder, a curved paper box, a paper pick-up assembly, and a paper shredding assembly. The paper holder connects with the curved paper box. A paper holding plate is disposed on an upper surface the paper holder close to the curved paper box, and the first paper holding plate and/or the second paper holding plate incline downwards toward the paper inlet. The paper pick-up assembly is disposed in the first paper holding plate and is close to the paper inlet. The paper shredding assembly is disposed below the paper inlet, and the end, away from the curved paper box, of the paper is driven by a paper pick-up assembly to enter the paper shredding assembly through the paper inlet.

Abstract: An image sensor and a method for forming the image sensor are provided. The method includes: providing a substrate; patterning the substrate to form a plurality of columnar structures configured in an array, wherein a first trench, a second trench, and a third trench are configured between adjacent columnar structures and respectively along a first direction, a second direction, and a third direction, side walls of the columnar structures perpendicular to the first direction are (110) crystal faces, and oblique sections of the columnar structures perpendicular to the third direction are (100) crystal faces; and forming a doped epitaxial layer in the first trench, the second trench and the cross trench. Therefore, for the image sensor, an upper part of the cross trench is improved with little defects after the cross trench is full filled, which can effectively reduce white pixels and thus improve the performance of the image sensor.

Abstract: A CMOS image sensor, a first dielectric layer is formed on a first surface of a semiconductor substrate, and a plurality of lower microlenses having a bottom surface in the shape of an arc concave structure and located directly above the corresponding photodiode are formed in the first dielectric layer. A plurality of upper microlenses having a top surface in the shape of an arc convex structure and located directly above the corresponding lower microlens are formed on the top surface of the first dielectric layer. The refractive index of the material of the upper microlens is greater than or equal to the refractive index of the material of the lower microlens, and the refractive index of the material of the lower microlens is greater than the refractive index of the first dielectric layer.

Abstract: A preparation method for silicon dioxide, controls temperature, pH and stirring rate in steps of preparing a silicon dioxide solution to exert an influence on the stability of a silicon dioxide solution gel system. The prepared silicon dioxide solution has a low viscosity, and finally prepared silicon dioxide has a high dispersity. The prepared silicon dioxide solution with a low viscosity will not adhere to a reaction tank, thus being easy to discharge. When the silicon dioxide prepared by the preparation method is used for preparing a toothpaste, since the silicon dioxide shows high dispersity due to its large BET specific area, low oil absorption and low viscosity, paste of the prepared toothpaste is not prone to caking and can be rinsed off easily. The paste of the prepared toothpaste shows high stability in a follow-up test of the viscosity stability of the toothpaste, thus being suitable for long-term storage.

Abstract: An amorphous silica particle, a preparation method and use thereof is disclosed. The amorphous silica particle provided by the present disclosure meets 0.85?a Cetyl Trimethyl Ammonium Bromide (CTAB) specific surface area/a Brunauer-Emmett-Teller (BET) specific surface area?1. The amorphous silica particle provided by the present disclosure has both excellent friction and cleaning abilities and high light transmittance, when used in a toothpaste as an abrasive, the amorphous silica particle can obtain the excellent cleaning effect and the high transparency characteristic with a relatively low addition amount, without causing excessive wear of dentin and enamel, and the amorphous silica particle is suitable for preparing a whitening and transparent toothpaste with high friction and cleaning properties.

Abstract: An inclined automatic paper shredder with structure for facilitating multi-stage staple removal from a stack of to-be-shredded paper. The shredder includes a paper pressing part arranged on a lower surface of a cover plate to press against the stack of paper disposed on a paper holding part. A staple removing plate is pivotally connected to an upper surface of the cover plate and can be opened in a first rotational direction. The staple removing plate rests in its the closed state on the upper surface of the cover plate and in its open state. The staple removing plate may rotate to abut against the stacked to-be-shredded paper on the paper holding plate and removes the staples on the stacked to-be-shredded paper.

Abstract: A camera module and an electronic device. The camera module includes a base, a photosensitive chip, a first lens barrel, a first lens, a second lens, an active lens barrel, a first bracket, a first driving mechanism, and a second driving mechanism, where the photosensitive chip is arranged on the base, the active lens barrel is rotatably connected to the base, the first lens barrel is sleeved on the active lens barrel, the first lens barrel is connected to the active lens barrel through a first fitting convex portion and a first spiral guide groove, the first bracket is movably arranged on the base, the first lens is arranged on the first lens barrel, the second lens is arranged on the first bracket, and the second lens is located between the photosensitive chip and the first lens.

Abstract: This application discloses a camera module and an electronic device. The camera module includes a photosensitive chip, a first lens barrel, a first lens, a rotating assembly, an elastic member, and a drive mechanism. The first lens barrel is provided with the first lens that is disposed opposite the photosensitive chip. The rotating assembly fits around the first lens barrel, and is connected to the rotating assembly via a first fitting convex portion and a first spiral guide slot. The rotating assembly includes a body member and a transmission member that are disposed separately. A first end of the elastic member is connected to the body member, and a second end of the elastic member is connected to the transmission member. The drive mechanism is connected to the transmission member, and the drive mechanism drives, via the transmission member, the elastic member, and the body member in turn.

Abstract: A paper shredder capable of feeding paper laterally, a paper holder, a curved paper box, a paper pick-up assembly, and a paper shredding assembly. The paper holder connects with the curved paper box. A paper holding plate is disposed on an upper surface the paper holder close to the curved paper box, and the first paper holding plate and/or the second paper holding plate incline downwards toward the paper inlet. The paper pick-up assembly is disposed in the first paper holding plate and is close to the paper inlet. The paper shredding assembly is disposed below the paper inlet, and the end, away from the curved paper box, of the paper is driven by a paper pick-up assembly to enter the paper shredding assembly through the paper inlet.

Abstract: A paper scrap pushing structure of a paper shredder, having a paper pushing unit, with a spindle having a longitudinal axis, a spindle flap coupled along the longitudinal axis to the spindle; and a paddle pushing segment, coupled to the spindle flap. The spindle is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. When the rotating shaft rotates, the rotating shaft drives the paddle pushing segment to move in the circumferential direction along with the spindle flap, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.

Abstract: The present disclosure provides a method for forming a backside illumination CMOS image sensor, including: providing a first substrate having a first surface and a second surface opposite to each other; forming a photoelectric epitaxial layer on the second surface, wherein the photoelectric epitaxial layer has a third surface and a fourth surface opposite to each other, and the second surface is adjacent to the third surface, wherein the photoelectric epitaxial layer is includes a groove extending from the fourth surface to the third surface, and the photoelectric epitaxial layer includes a plurality of first doped areas and a plurality of second doped areas surrounding the plurality of first doped areas respectively; forming a device layer after forming the groove and the photoelectric epitaxial layer; and forming an isolation layer in the groove. The method can reduce generation of dark current and improve performance of the CMOS image sensor.

Abstract: An image sensor and a method for forming the image sensor are provided. The method includes: providing a substrate; patterning the substrate to form a plurality of columnar structures configured in an array, wherein a first trench, a second trench, and a third trench are configured between adjacent columnar structures and respectively along a first direction, a second direction, and a third direction, side walls of the columnar structures perpendicular to the first direction are (110) crystal faces, and oblique sections of the columnar structures perpendicular to the third direction are (100) crystal faces; and forming a doped epitaxial layer in the first trench, the second trench and the cross trench. Therefore, for the image sensor, an upper part of the cross trench is improved with little defects after the cross trench is full filled, which can effectively reduce white pixels and thus improve the performance of the image sensor.

Abstract: An automatic shredder having an upper shredder cover, a lower shredder cover, a first paper box, a second paper box, a shredder cover plate, a paper pressing plate, a paper pressing roller set, a paper pick-up roller set, a paper inlet, a cutter shaft set, a drive motor, a shell and a waste paper barrel. The automatic shredder adopts a bent paper box to change the length of to-be-shredded paper by means of the flexibility and bendability of paper and the features of paper pick-up rollers on one side, is extremely simple and economical, and changes the flat paper placement structure of existing automatic shredders.

Abstract: Automatic paper shredder having a paper pressing mechanism, which includes upper shredder cover, lower shredder cover, paper support box, paper pressing plate, cover plate, spindle and two spindle holders. Upper cover is connected to lower cover. Paper support box is above the lower cover forming a cavity for to-be-shredded paper. Fixed ends of paper pressing plate and cover plate are around the spindle, so free ends of paper pressing plate and cover plate can rotate coaxially. Two ends of spindle are respectively disposed in two spindle holders, so spindle can rotate. Two spindle holders are connected to upper cover to connect cover plate and paper pressing plate to upper cover. Paper pressing plate is disposed below cover plate and for pressing to-be-shredded paper placed on paper support box when a user closes cover plate.

Abstract: A CMOS image sensor, a first dielectric layer is formed on a first surface of a semiconductor substrate, and a plurality of lower microlenses having a bottom surface in the shape of an arc concave structure and located directly above the corresponding photodiode are formed in the first dielectric layer. A plurality of upper microlenses having a top surface in the shape of an arc convex structure and located directly above the corresponding lower microlens are formed on the top surface of the first dielectric layer. The refractive index of the material of the upper microlens is greater than or equal to the refractive index of the material of the lower microlens, and the refractive index of the material of the lower microlens is greater than the refractive index of the first dielectric layer.

Abstract: An image sensor including an isolation structure and a plurality of photodiodes arranged in a photosensitive area. The isolation structure isolates the plurality of the photodiodes from each other to form an array structure, and a closed air cavity structure is formed in the isolation structure between two adjacent photodiodes. A method for manufacturing an image sensor includes: providing a base layer; selectively etching the base layer to form a deep trench in a photosensitive area of the base layer; the deep trench extending from the first surface to the second surface of the base layer in a longitudinal direction to divide the base layer into device units arranged in an array; and gradually growing an epitaxial layer on the surface of the deep trench by means of an epitaxial growth process, so that the space in the deep trench tapers to form a closed air cavity structure.

Abstract: Automatic paper shredder having a paper pressing mechanism, which includes upper shredder cover, lower shredder cover, paper support box, paper pressing plate, cover plate, spindle and two spindle holders. Upper cover is connected to lower cover. Paper support box is above the lower cover forming a cavity for to-be-shredded paper. Fixed ends of paper pressing plate and cover plate are around the spindle, so free ends of paper pressing plate and cover plate can rotate coaxially. Two ends of spindle are respectively disposed in two spindle holders, so spindle can rotate. Two spindle holders are connected to upper cover to connect cover plate and paper pressing plate to upper cover. Paper pressing plate is disposed below cover plate and for pressing to-be-shredded paper placed on paper support box when a user closes cover plate.