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公开(公告)号：GB2579531A
公开(公告)日：2020-06-24
申请号：GB202004685
申请日：2018-10-03
Applicant: IBM
Inventor： OKI GUNAWAN , NORMA EDITH SOSA
Abstract: A tunable and resettable shock sensor using a parallel dipole line (PDL) trap system is provided. In one aspect, a shock sensor includes: a PDL trap having a pair of diametric magnets separated from one another by a gap gM, and a diamagnetic rod levitating in between the diametric magnets;and contact pads below the PDL trap, wherein the contact pads are separated from one another by a space that is less than a length l of the diamagnetic rod. A shock monitoring system is also provided that includes a network of the shock sensors, as is a method for shock monitoring using the shock sensors.
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公开(公告)号：GB2553985B
公开(公告)日：2021-06-23
申请号：GB201717263
申请日：2016-03-24
Applicant: IBM
Inventor： OKI GUNAWAN , MICHAEL ALBERT PEREIRA
Abstract: A rotating magnetic field Hall apparatus is provided and includes first and second magnets disposed in a master-slave configuration, a device-under-test (DUT) stage interposable between the first and second magnets on which a DUT is disposable in first or second orientations for Hall measurement or photoelectromagnetic (PEM) testing, respectively, controllers disposed to center the DUT stage between the first and second magnets and orthogonal magnetic field sensors disposed aside lateral sides of the first magnet to facilitate positional initialization of the first and second magnets and to generate in-phase and out-of-phase reference signals for phase-sensitive or lock-in Hall signal detection. The system also includes software system to perform signal processing to yield the final Hall signal.
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公开(公告)号：GB2567384B
公开(公告)日：2019-08-28
申请号：GB201902052
申请日：2017-07-24
Applicant: IBM
Inventor： OKI GUNAWAN , YUDISTIRA VIRGUS
Abstract: Parallel dipole line (PDL) trap seismometer and vibration sensors are provided. In one aspect of the invention, a seismometer is provided. The seismometer includes: at least one PDL trap having a pair of dipole line magnets, and a diamagnetic object levitating above the dipole line magnets; and a sensing system (passive or active sensing) for determining a position of the diamagnetic object relative to the dipole line magnets and to yield the seismic signal in terms of displacement or acceleration. Methods for sensing vibrations using the present PDL trap seismometer and vibration sensors are also provided.
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公开(公告)号：GB2596770A
公开(公告)日：2022-01-05
申请号：GB202115227
申请日：2020-03-17
Applicant: IBM
Inventor： WANG ZHOU , OKI GUNAWAN
Abstract: Systems and methods are provided that facilitate high-sensitivity, carrier-resolved photo-Hall effect measurements. Majority and minority carrier properties can be measured and determined simultaneously. In one aspect, a system(200) and method determine majority carrier type, density and mobility and, with modulated illumination, minority carrier mobility and photocarrier density. In another aspect, a system(200) and method can determine hole and electron mobility, photocarrier density, absorbed photon density, recombination lifetime and diffusion length forhole, electron and ambipolar transport.
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公开(公告)号：GB2563810A
公开(公告)日：2018-12-26
申请号：GB201817913
申请日：2017-02-14
Applicant: IBM
Inventor： OKI GUNAWAN
IPC: H01F7/02
Abstract: Techniques for tuning magnetic potential using a variable gap in a parallel dipole line (PDL) trapare provided. In one aspect, a PDL trapis provided. The PDL trap includes: a pair of dipole line magnets separated from one another by a variable gap g; anda diamagnetic object levitating above the dipole line magnets. The dipole line magnets can be separated from one another by at least one spacer, or a variable gap fixture can be used in which the dipole line magnets are affixed to separate mounts for varying the gap gbetween the dipole line magnets. A bigger trap or track can be built with multiple segments of PDL trap. A method of operating a PDL trap is also provided.
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Patent Agency Ranking
公开(公告)号：GB2605482A
公开(公告)日：2022-10-05
申请号：GB202117422
申请日：2021-12-02
Applicant: IBM
Inventor： CARLO SIEBENSCHUH , CONRAD M ALBRECHT , JOHANNES WALTER SCHMUDE , HENDRIK F HAMANN , SIYUAN LU , OKI GUNAWAN
IPC: G01V1/00
Abstract: A plurality of cameras 20 e.g. IP cameras used for surveillance or meteorological observations provide a visual input of a location over a network. A coupling correction is performed between a shaking of the camera with respect to the visual input by subtracting velocity vectors of the plurality of cameras from velocity vectors of pixels defining the visual input to provide a processed input. It is determined whether a shaking identified in the processed input is above a predetermined threshold based on the processed input, thereby detecting one or more anomalies. From the one or more anomalies, at least one of a location, magnitude, or depth of an earthquake are inferred based on the shaking identified in the processed input of each of the plurality of cameras. The intensity of the earthquake may be determined. Shaking may be determined from pixel-wise changes in the processed input, by performing a spectral analysis and determining a spectral decomposition. Parameters of the earthquake may be detected using a trained artificial intelligence model. External seismic data may be used to calibrate the cameras.
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公开(公告)号：GB2579531B
公开(公告)日：2020-11-11
申请号：GB202004685
申请日：2018-10-03
Applicant: IBM
Inventor： OKI GUNAWAN , NORMA EDITH SOSA
Abstract: A tunable and resettable shock sensor using a parallel dipole line (PDL) trap system is provided. In one aspect, a shock sensor includes: a PDL trap having a pair of diametric magnets separated from one another by a gap gM, and a diamagnetic rod levitating in between the diametric magnets; and contact pads below the PDL trap, wherein the contact pads are separated from one another by a space that is less than a length l of the diamagnetic rod. A shock monitoring system is also provided that includes a network of the shock sensors, as is a method for shock monitoring using the shock sensors.
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公开(公告)号：GB2579291B
公开(公告)日：2020-11-04
申请号：GB202001281
申请日：2018-07-05
Applicant: IBM
Inventor： OKI GUNAWAN
Abstract: A high sensitivity force gauge using a magnetic PDL trap system is provided. In one aspect, a force gauge includes: a PDL trap having a pair of dipole line magnets and a diamagnetic rod levitating above the dipole line magnets; an actuator with an extension bar adjacent to the PDL trap; a first object of interest attached to the diamagnetic rod; and a second object of interest attached to the extension bar, wherein the actuator is configured to move the second object of interest toward or away from the PDL trap via the extension bar. A method for force measurement using the present force gauge is also provided.
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公开(公告)号：GB2596770B
公开(公告)日：2022-05-25
申请号：GB202115227
申请日：2020-03-17
Applicant: IBM
Inventor： OKI GUNAWAN , WANG ZHOU
Abstract: Systems and methods are provided that facilitate high-sensitivity, carrier-resolved photo-Hall effect measurements. Majority and minority carrier properties can be measured and determined simultaneously. In one aspect, a system and method determine majority carrier type, density and mobility and, with modulated illumination, minority carrier mobility and photocarrier density. In another aspect, a system and method can determine hole and electron mobility, photocarrier density, absorbed photon density, recombination lifetime and diffusion length for hole, electron and ambipolar transport.
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公开(公告)号：GB2579291A
公开(公告)日：2020-06-17
申请号：GB202001281
申请日：2018-07-05
Applicant: IBM
Inventor： OKI GUNAWAN
Abstract: A high sensitivity force gauge using a magnetic PDL trap system is provided. In one aspect, a force gauge includes: a PDL trap having a pair of dipole line magnets and a diamagnetic rod levitating above the dipole line magnets; an actuator with an extension bar adjacent to the PDL trap; a first object of interest attached to the diamagnetic rod; and a second object of interest attached to the extension bar, wherein the actuator is configured to move the second object of interest toward or away from the PDL trap via the extension bar. A method for force measurement using the present force gauge is also provided.
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