Abstract: The present application provides a comfortable lightweight bullet-proof and stab-resistant suit and a preparation method thereof. A first aspect of the present application provides a comfortable lightweight bullet-proof and stab-resistant suit, including a sheath and a protection core sheet disposed in the sheath, and the protection core sheet includes a first protection layer, a second protection layer, a third protection layer and a buffer layer which are sequentially stacked together. The bullet-proof and stab-resistant suit provided in the present application has better response protection characteristics in the process of bullet penetration or knife tip stab, and the prepared aramid unidirectional cloth has low areal density, apparent flatness, no bubbles, and excellent softness, so that any bending within 180° can be realized.

Abstract: A multi-beam apparatus for observing a sample with high resolution and high throughput is proposed. In the apparatus, a source-conversion unit forms plural and parallel images of one single electron source by deflecting plural beamlets of a parallel primary-electron beam therefrom, and one objective lens focuses the plural deflected beamlets onto a sample surface and forms plural probe spots thereon. A movable condenser lens is used to collimate the primary-electron beam and vary the currents of the plural probe spots, a pre-beamlet-forming means weakens the Coulomb effect of the primary-electron beam, and the source-conversion unit minimizes the sizes of the plural probe spots by minimizing and compensating the off-axis aberrations of the objective lens and condenser lens.

Abstract: A manufacturing method of a diamond porous grinding block based on 3D printing. The manufacturing method includes designing a 3D printing model of a grinding block unit cell with an adjustable porosity according to an internal cooling space for abrasive debris required in a grinding process, importing the 3D printing model of the grinding block unit cell into a MAGICS software, filling a frame of a 3D printing model of a diamond porous grinding block with a plurality of 3D printing models of grinding block unit cells; preparing mixed powder of diamond abrasive particles and an aluminum alloy binder as printing powder, performing 3D printing to the 3D printing model of the diamond porous grinding block by an SLM technology to obtain the diamond porous grinding block. The diamond porous grinding block is configured to form a diamond structure grinding disc for grinding a semiconductor substrate.

Abstract: The present disclosure generally relates to emitting organic molecules, including but not limited to, pyrazoles such as 2-phenyl-2H-pyrazol-3-yl acetate, etc. In some cases, the molecules are able to emit in blue or green wavelengths. In some aspects, such molecules may be used in organic light emitting diodes. In certain embodiments, the molecules may comprise one or more bridge moieties and one or more chromophores. In some embodiments, these molecules can be used as electroluminescent media in devices requiring light emission as a function of applied voltage. Other embodiments of the disclosure are generally directed to systems and devices using such molecules, methods of using such molecules, e.g., to control the emission of light, kits involving such molecules, or the like.

Abstract: A method for measuring a thickness and optical constants of a multi-layer film comprises the following steps: 1: depositing films on a substrate to form a multi-layer film; 2: measuring an ellipsometric spectrum of the multi-layer film; 3: when the film layer of the multi-layer film is the diamond film, step 41 is executed; when the film layer of the multi-layer film is the diamond-like film, steps 42, 5, and 6 are executed; 41: obtaining optical constants and a thickness of the film layer of the multi-layer film; 42: selecting a spectral region defining a transparent section of the film layer of the multi-layer film, and obtaining optical constants and a thickness of the film layer of the multi-layer film; 5: adjusting an amplitude and a width of an oscillator model according to the ellipsometric spectrum; and 6: evaluating a difference between an experimental value and a fitted value.

Abstract: First, it is judged whether the diamond film is the single-crystal diamond film or the polycrystalline diamond film according to ellipsometric spectrum data and absorption spectrum data, and different calculation methods are selected to obtain the optical constants and the thickness of the diamond film according to spectral data (e.g., the ellipsometric spectrum data and the absorption spectrum data). Additionally, in the single-crystal diamond film, the optical constants and the thickness of the diamond film are obtained through calculation using the Cauchy model. In the polycrystalline diamond film, the spectral region is selected, and the optical constants and the thickness of the diamond film are obtained through calculation according to the oscillator model and the evaluation function MSE.

Abstract: A method for manufacturing a crystal ingot includes the steps of forming a crystal boule, cutting the crystal boule so as to obtain a crystal ingot from the crystal boule, and subjecting the crystal ingot to an annealing treatment which includes a heating stage, a constant temperature stage and a cooling stage.

Abstract: The present invention provides a displacement monitoring system for a tower, the displacement monitoring system includes a tower displacement monitoring terminal and an underground displacement monitoring terminal electrically connected to the tower displacement monitoring terminal, the tower displacement monitoring terminal is arranged on the tower and includes a main control module, an overground tower displacement sensor, a power supply module and a communication module, wherein the overground tower displacement sensor, the power supply module and the communication module are electrically connected to the main control module respectively, the underground displacement monitoring terminal is arranged on an underground bedrock and includes a controlling module and an underground displacement sensor electrically connected to the controlling module.