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公开(公告)号：US11754744B2
公开(公告)日：2023-09-12
申请号：US17420928
申请日：2020-03-04
Inventor： Hengxin Ren , Zhentao Yang , Xiaofei Chen , Shichuan Yuan , Xuzhen Zheng , Zhanxiang He
CPC classification number: G01V11/007 , G01V1/28 , G01V3/12
Abstract: A surface wave prospecting method for jointly extracting Rayleigh wave frequency dispersion characteristics in a seismoelectric field. A surface wave prospecting method includes following steps of: acquiring jointly acquired data, where the jointly acquired data includes seismic wave data and electric field data; carrying out jointly imaging processing on jointly acquired data to obtain a superposed frequency dispersion spectrum; carrying out extraction processing on superposed frequency dispersion spectrum to obtain a frequency dispersion curve, outperforming inversion processing on frequency dispersion curve to obtain a stratum structure profile. As seismic wave data and electric field data are adopted to carry out combined imaging processing to obtain superposed frequency dispersion spectrum, multi-mode frequency dispersion curve is extracted, multiplicity of solutions of inversion is greatly reduced during inversion, precision and stability of surface wave prospecting are greatly improved.
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62.发明公开公开(公告)号：US20230143368A1
公开(公告)日：2023-05-11
申请号：US17802283
申请日：2020-11-27
Inventor： Bi ZHANG , Sai GUO , Jingfei YIN , Xiuxuan YANG
CPC classification number: B24B49/006 , B24B49/10 , B24B1/04
Abstract: Disclosed are a machining method and a machining device improving machining efficiency and preserving workpiece surface integrity. The machining method improving machining efficiency and preserving workpiece surface integrity includes: setting a workpiece (300) and a machining unit (400); and machining the workpiece (300) by the machining unit (400) at a preset machining speed, wherein the preset machining speed is not lower than a machining speed corresponding to the embrittlement of the workpiece material. By the machining method, the machining speed of the machining unit (400) is set during machining, which results in “skin effect” of subsurface damage caused by the embrittlement of the workpiece material (300) and enables the damage depth of the workpiece (300) to be confined in a shallow subsurface layer, so that the damage depth of the workpiece (300) is reduced, the workpiece integrity is preserved, and the machining quality and the machining efficiency are improved.
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公开(公告)号：US20220271235A1
公开(公告)日：2022-08-25
申请号：US17629396
申请日：2020-07-23
Applicant: Arizona Board of Regents on Behalf of the University of Arizona, a body corporate , Southern University of Science and Technology
Inventor： Dominic V. McGrath , Zongxiang Xu , Neal R. Armstrong
IPC: H01L51/00 , C07D487/22
Abstract: The present invention provides methods for increasing stability and efficiency of organic perovskite materials for use in various electronic devices. In particular, methods of the invention use a non-peripheral substituted phthalocyanine for passivating defects in organic perovskite materials, thereby increasing its stability and efficiency relative to the same material in the absence of said non-peripheral substituted phthalocyanine.
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公开(公告)号：US20210382289A1
公开(公告)日：2021-12-09
申请号：US17286101
申请日：2019-01-24
Inventor： Guixin LI , Xuan LIU , Junhong DENG
Abstract: Provided are a reflective metasurface primary mirror and secondary mirror, and a telescope system. The reflective metasurface primary mirror includes a transparent substrate and a primary mirror metasurface functional unit pattern disposed on the transparent substrate. The primary mirror metasurface functional unit pattern includes an anisotropic primary mirror subwavelength structure disposed in a set annular region, and a phase introduced by the primary mirror subwavelength structure satisfies a primary mirror phase distribution. The set annular region encircles a light-transmissive hole, and light reflected by the reflective metasurface secondary mirror is focused through the light-transmissive hole.
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公开(公告)号：US20210141113A1
公开(公告)日：2021-05-13
申请号：US17051247
申请日：2018-08-06
Inventor： Zhentao YANG , Xiaofei CHEN , Jiannan WANG , Lei PAN
Abstract: Active source surface wave prospecting method which is applicable to technical field of geological prospecting, comprising: collecting, by detector at preset station, surface wave data transmitted from seismic source; calculating to obtain dispersion energy graph on basis of vector wave-number transformational algorithm and according to surface wave data; extracting dispersion curve from dispersion energy graph, dispersion comprising base-order surface wave dispersion curve and high-order surface wave dispersion curve; establishing initial stratigraphic model according to base-order surface wave dispersion curve and high-order surface wave dispersion curve, performing, according to initial stratigraphic model, joint inversion on base-order surface wave dispersion curve and high-order surface wave dispersion curve to obtain inverting data of stratigraphic texture. Accuracy of surface wave prospecting result is effectively improved. Further provided are surface wave exploration device and terminal device.
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Patent Agency Ranking
公开(公告)号：US20190113641A1
公开(公告)日：2019-04-18
申请号：US15950350
申请日：2018-04-11
Inventor： Xinding FANG , Xiaofei CHEN
IPC: G01V1/30
Abstract: The present application provides a seismic travel time tomographic inversion method based on two-point ray tracing comprising: collecting seismic data including direct wave travel time and reflected wave travel time; establishing an initial one-dimensional continuously layered model having continuously a varying intraformational velocity; representing a ray parameter p by a variable q, representing a source-receiver distance X by a function X=f(q) of the variable q, solving the function X=f(q) using a Newton iteration method; calculating a theoretical direct wave travel time and reflected wave travel time according to the ray parameter p; comparing the calculated theoretical arrival time with actual arrival time, using an optimal algorithm to adjust velocity parameters of the initial one-dimensional continuously layered model, until a difference between the theoretical direct wave travel time and reflected wave travel time and the actual direct wave travel time and reflected wave travel time complies with a predetermined error standard.
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公开(公告)号：US20190085684A1
公开(公告)日：2019-03-21
申请号：US15970490
申请日：2018-05-03
Inventor： Xinding FANG , Jianxia XU , Zhentao YANG
Abstract: A method, device, terminal and computer readable storage medium for determining a cross-sectional shape of a borehole involves obtaining a plurality of logging data items as measured at a same depth of a well via a multi-arm caliper. The logging data items include pad coordinates which use a center of the multi-arm caliper as a reference point. Coordinates of a borehole center and a borehole radius at the depth of the well are obtained by using a least squares objective function with a constraint condition and according to the pad coordinates. The constraint condition is that a distance from a pad of a caliper tool to the borehole center is larger than or equal to the borehole radius. The pad positions are located outside a circle or on the circle obtained by fitting according to the least squares objective function, such that a real borehole cross-sectional shape is obtained. Measuring errors of well logging are reduced, and the reliability of the measurement of the borehole cross-sectional shape is improved.
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68.发明申请公开(公告)号：US20250072289A1
公开(公告)日：2025-02-27
申请号：US18704812
申请日：2023-01-28
Inventor： Qian XU , Gang CHEN , Weishu LIU , Biao DENG , Pengxiang ZHANG
IPC: H10N10/17
Abstract: The present disclosure generally relates to high-performance flexible thermoelectric generators (f-TEGs) for heat concentration and dissipation. In some embodiments, the f-TEGs can be incorporated into wearable devices. The f-TEG device can include an f-TEG network of thermoelectric units that include multifunctional thin copper disks that can be used as electrodes, heat concentrators and spreaders, spacers, and flexibility enablers. Each electrode can include a spacer extending therefrom to suppress the heat loss between the hot and the cold sides through conduction and convection across a thermoelectric pillar disposed therebetween. In some embodiments, the f-TEG network can be associated with a fabric to provide good wearability and comfort even in wet thermal environments.
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公开(公告)号：US20240094123A1
公开(公告)日：2024-03-21
申请号：US18274629
申请日：2021-02-04
Inventor： Fucai ZHANG , Bingyang WANG
IPC: G01N21/47
CPC classification number: G01N21/4788
Abstract: A method for characterising an object, including: providing, via a support plane, coherent incident radiation at the object at each of a plurality of radiation configurations, detecting, at a detector, an intensity of radiation scattered by the object for each radiation configurations, and determining, via an iterative process, an object transmission function associated with the object in dependence on the detected intensity of radiation for each radiation configurations. The iterative process comprises estimating, for each radiation configurations, an entrance wave function and an exit wave function, a support constraint and a current estimate of the object transmission function, determining a ratio of a sum of intensities of the exit wave function for the plurality of radiation configurations to a sum of intensities of the entrance wave function therefor, and updating the estimate of the object transmission function in dependence on the determined ratio and an amplitude constraint.
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公开(公告)号：US20240045272A1
公开(公告)日：2024-02-08
申请号：US18492400
申请日：2023-10-23
Inventor： Yanjun Liu , Rui Guo , Tenghao Li , Mengjia Cen , Jiawei Wang
IPC: G02F1/1337
CPC classification number: G02F1/133723 , G02F1/133742 , G02F1/133738
Abstract: An electromagnetic wave control apparatus includes an upper electrode layer, a lower electrode layer, a liquid crystal layer, and a first metamaterial layer disposed between the upper electrode layer and the lower electrode layer. The first metamaterial layer includes a first array including alignment unit structures. A first surface of the alignment unit structure is a surface that is of the alignment unit structure and that faces away from the liquid crystal layer. A length-to-width ratio of the first surface of the alignment unit structure is greater than 1. A length of the first surface, a width of the first surface, and a spacing between two adjacent alignment unit structures range from 1 nm to 5000 nm.
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