Photoacoustic voltage indicators
    1.
    发明授权

    公开(公告)号:US12082938B2

    公开(公告)日:2024-09-10

    申请号:US17533278

    申请日:2021-11-23

    Abstract: A system for measuring a membrane potential is disclosed. The system comprises a photoacoustic probe including a laser and an ultrasound transducer. The laser is configured to emit a light signal at one or more wavelengths to a neuronal cell. The neuronal cell may comprise a voltage-sensitive protein configured to absorb the light signal in a voltage-dependent manner. The ultrasound transducer is configured to receive a photoacoustic signal from the voltage-sensitive protein in response to absorbing the light signal. The system further comprises a processor configured to receive the photoacoustic signal from the ultrasound transducer and calculate a membrane potential of the neuron based on the photoacoustic signal. Methods of measuring a membrane potential and biomaterials related to the voltage-sensitive protein are also disclosed herein.

    PROCESS AND APPARATUS FOR ANALYZING A TISSUE

    公开(公告)号:US20240225455A1

    公开(公告)日:2024-07-11

    申请号:US18559024

    申请日:2022-04-28

    Applicant: ECLYPIA

    Abstract: A process for non-invasively analyzing a target with an analysis apparatus comprises an intensity modulation device, a light emitter emitting an intensity-modulated light, a detection cell comprising a sensor sensing directly or indirectly a thermal wave propagating out of the target in response to an irradiation of said target by the light emitted, a processor module configured to receive and process sensor data from at least one detection cell. The process comprises carrying out at least two irradiations of the target with the light emitter in a first mode, the modulation frequency of the intensity of the light emitted being swept during each of the irradiations in the first mode over a frequency sweep range, and the processor module receiving sensor data from a detection cell for each of the at least one irradiation in the first mode and forming with the processor module a time series.

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