Ultra high entropy material-based non-reversible spectral signature generation via quantum dots

    公开(公告)号:US12166866B2

    公开(公告)日:2024-12-10

    申请号:US18363857

    申请日:2023-08-02

    Abstract: A physically unclonable function (PUF) device is provided, comprising an excitation source providing light for exciting quantum dots (QDs); a first layer of a material having contained therein a first random distribution of first QDs of a first type that are configured to generate a first color in response to being excited by the excitation source; a second layer of a second material having contained therein a second random distribution of second QDs of a second type that are configured to generate a second color, different from the first color, in response to being excited by the first excitation source, and a detector fixedly attached to one of the first and second layers and configured for detecting a pattern of light emitted by at least one of the first QDs and the second QDs and for providing an output indicative of the detected pattern.

    ULTRA HIGH ENTROPY MATERIAL-BASED NON-REVERSIBLE SPECTRAL SIGNATURE GENERATION VIA QUANTUM DOTS

    公开(公告)号:US20230396425A1

    公开(公告)日:2023-12-07

    申请号:US18363857

    申请日:2023-08-02

    CPC classification number: H04L9/0852 H04L9/3278 H04L9/3236 G02F2/02

    Abstract: A physically unclonable function (PUF) device is provided, comprising an excitation source providing light for exciting quantum dots (QDs); a first layer of a material having contained therein a first random distribution of first QDs of a first type that are configured to generate a first color in response to being excited by the excitation source; a second layer of a second material having contained therein a second random distribution of second QDs of a second type that are configured to generate a second color, different from the first color, in response to being excited by the first excitation source, and a detector fixedly attached to one of the first and second layers and configured for detecting a pattern of light emitted by at least one of the first QDs and the second QDs and for providing an output indicative of the detected pattern.

    HIGH-PULSE ENERGY, HIGH-POWER LASERS WITH DIFFRACTION-LIMITED PERFORMANCE

    公开(公告)号:US20220021175A1

    公开(公告)日:2022-01-20

    申请号:US16947109

    申请日:2020-07-17

    Abstract: A system includes a planar waveguide that includes an active gain medium configured to receive pump light from a pump source and amplify stimulated emission light. The planar waveguide has a fast axis and a slow axis and is configured to operate in single mode in the fast axis and multimode in the slow axis. The system also includes a hybrid spatial filter configured to receive the amplified stimulated emission light from the planar waveguide and output laser light. The hybrid spatial filter includes a physical slit having a narrower dimension corresponding to the slow axis of the planar waveguide. The physical slit is configured to reduce an intensity of the amplified stimulated emission light received from the planar waveguide. The hybrid spatial filter also includes a Volume Bragg Grating (VBG) configured to constrain an angle of the amplified stimulated emission light and enable compact geometry intra-cavity beam expanding/collimating optics.

    Ultra high entropy material-based non-reversible spectral signature generation via quantum dots

    公开(公告)号:US12143479B2

    公开(公告)日:2024-11-12

    申请号:US18363853

    申请日:2023-08-02

    Abstract: A physically unclonable function (PUF) device is provided, comprising an excitation source providing light for exciting quantum dots (QDs); a first layer of a material having contained therein a first random distribution of first QDs of a first type that are configured to generate a first color in response to being excited by the excitation source; a second layer of a second material having contained therein a second random distribution of second QDs of a second type that are configured to generate a second color, different from the first color, in response to being excited by the first excitation source, and a detector fixedly attached to one of the first and second layers and configured for detecting a pattern of light emitted by at least one of the first QDs and the second QDs and for providing an output indicative of the detected pattern.

    HIGH ENTROPY, HIGH DIELECTRIC SWING HETEROGENEOUS MATERIALS

    公开(公告)号:US20240047138A1

    公开(公告)日:2024-02-08

    申请号:US18366438

    申请日:2023-08-07

    CPC classification number: H01G4/14

    Abstract: Devices, systems, and methods for micro-scale capacitance excursions in a porous medium are provided. A method can include forming pores in polymer or a metal oxide powder resulting in a porous film, injecting conductive nanoparticles into the porous film resulting in a conductive porous film, and curing the conductive porous film resulting in the high entropy, high dielectric swing heterogeneous film.

    Ultra high entropy material-based non-reversible spectral signature generation via quantum dots

    公开(公告)号:US11784805B2

    公开(公告)日:2023-10-10

    申请号:US17653761

    申请日:2022-03-07

    CPC classification number: H04L9/0852 G02F2/02 H04L9/3236 H04L9/3278

    Abstract: A physically unclonable function (PUF) device is provided, comprising an excitation source providing light for exciting quantum dots (QDs); a first layer of a material having contained therein a first random distribution of first QDs of a first type that are configured to generate a first color in response to being excited by the excitation source; a second layer of a second material having contained therein a second random distribution of second QDs of a second type that are configured to generate a second color, different from the first color, in response to being excited by the first excitation source, and a detector fixedly attached to one of the first and second layers and configured for detecting a pattern of light emitted by at least one of the first QDs and the second QDs and for providing an output indicative of the detected pattern.

    HIGH POWER MMW SYNTHESIZER WITH TRULY CONTINUOUS ULTRA WIDE BANDWIDTH TUNING RANGE

    公开(公告)号:US20220393429A1

    公开(公告)日:2022-12-08

    申请号:US17748698

    申请日:2022-05-19

    Abstract: A synthesizer includes a first resonator mirror, a second resonator mirror, and a gain medium disposed within a laser resonator cavity defined by the first resonator mirror and the second resonator mirror. The synthesizer includes a saturable absorber operationally coupled to the gain medium and having active control such that the saturable absorber is configured to generate a waveform via an injection locking signal to create a mode locking effect, the waveform having a frequency comb defined by dimensions of the gain medium. The synthesizer also includes a crystal electro-optical modulator disposed within the laser resonator cavity. The waveform passes through the modulator to impinge on a photodiode to output an emission RF waveform. Changing the voltage applied to the modulator changes the index of refraction of the modulator, altering an optical path length of the laser resonator cavity to adjust a frequency of the emission RF waveform.

    X-RAY CELLS AND OTHER COMPONENTS HAVING GAS CELLS WITH THERMALLY-INDUCED DENSITY GRADIENTS
    19.
    发明申请
    X-RAY CELLS AND OTHER COMPONENTS HAVING GAS CELLS WITH THERMALLY-INDUCED DENSITY GRADIENTS 有权
    具有热诱导密度梯度的气体细胞的X射线细胞和其他组分

    公开(公告)号:US20140314210A1

    公开(公告)日:2014-10-23

    申请号:US13866908

    申请日:2013-04-19

    CPC classification number: H05G2/003 H05G2/008

    Abstract: A method includes creating a gas flow in a gas cell and cooling a portion of the gas flow to create a thermally-induced temperature gradient in the gas flow. The method also includes directing at least one laser beam through at least a portion of the gas flow with the thermally-induced temperature gradient. The gas flow can be directed axially along a length of the gas cell or transverse to the length of the gas cell, and the at least one laser beam can be directed axially along the length of the gas cell through at least the portion of the gas flow. The gas flow may represent a first gas flow, and the method may further include creating a second gas flow in the gas cell and cooling a portion of the second gas flow to create a thermally-induced temperature gradient in the second gas flow.

    Abstract translation: 一种方法包括在气室中产生气流并冷却气流的一部分以产生气流中的热诱导温度梯度。 该方法还包括引导至少一个激光束通过具有热诱导温度梯度的气流的至少一部分。 气流可以沿着气室的长度轴向或横向于气室的长度定向,并且至少一个激光束可沿着气室的长度轴向定向通过气体的至少一部分 流。 气流可以表示第一气流,并且该方法还可以包括在气室中产生第二气流并冷却第二气流的一部分以在第二气流中产生热诱导的温度梯度。

    CASCADE SPOOF PROOF EXTRA-LAYER RADIANT AUTHENTICATION (CASPER-A) SYSTEM AND METHOD USING SPECTRALLY-CODED TAGGANTS

    公开(公告)号:US20240028941A1

    公开(公告)日:2024-01-25

    申请号:US17871105

    申请日:2022-07-22

    CPC classification number: G06N10/40 H04L9/0852 H04L9/3278 B82Y10/00

    Abstract: A Cascade Spoof Proof Extra-layer Radiant Authentication (CASPER-A) system using spectrally-coded taggants is configured to transmit a multi-wavelength optical interrogation signal to interrogate a nanotag associated with a device. A multi-spectral optical receiver may be configured to receive and decode a response to the interrogation signal that may comprise a multi-spectral emission generated by the nanotag. Processing circuitry may generate data from the decoded response. To authenticate the device associated with the nanotag, the processing circuitry may generate a digital signature. The nanotag may comprise a multi-layered nanocrystal (NC) activated composite material comprising multiple layers configured to generate a multi-spectral emission from optical excitation by the optical interrogation signal. Each layer may comprise a heterogeneously dispersed volume embedded with quantum dots (Qdots). The Qdots may be configured to generate a multi-spectral emission based on an interaction of one or more wavelengths among Qdot emitters by intercoupling.

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