Ultrasound sub-surface probe microscopy device and corresponding method

    公开(公告)号:US12130258B2

    公开(公告)日:2024-10-29

    申请号:US17613746

    申请日:2020-05-26

    摘要: An ultrasound sub-surface probe microscopy device (1) is provided comprising a stage (10), a signal generator (20), a scanning head (30), a signal processor (50) and a scanning mechanism (16). In use, the stage (10) carries a sample (11) and the scanning mechanism (16) provides for a relative displacement between the sample (11) and the scanning head (30), along the surface of the sample. The scanning head (30) comprises an actuator (31) configured to generate in response to a drive signal (Sdr) from the signal generator (20) an ultrasound acoustic input signal (Iac). The generated ultrasound acoustic input signal (Iac) has at least one acoustic input signal component (Iac1) with a first angular frequency (ω1). The scanning head (30) further comprises a tip (32) to transmit the acoustic input signal (Iac) through a tip-sample interface (12) as an acoustic wave (Wac) into the sample. Due to a non-linear interaction in the tip-sample interface (12) at least one up mixed acoustic signal component (Wac2) in said acoustic wave that has a second angular frequency (ω2) higher than the first angular frequency (ω1) Contrary to known approaches, the sensor signal (Ssense) provided by the sensor facility is indicative for a contribution (W′ac2) of the at least one up mixed acoustic signal component in reflections (W′ac) of the acoustic wave within the sample (11). Therewith a relatively high resolution can be achieved with which subsurface features can be detected.

    Acoustical Microscope
    5.
    发明申请

    公开(公告)号:US20190187099A1

    公开(公告)日:2019-06-20

    申请号:US16279997

    申请日:2019-02-19

    申请人: Dan Slater

    发明人: Dan Slater

    IPC分类号: G01N29/06 G01H3/12 G10K11/30

    摘要: A system and method for using a microscope to aurally observe a specimen in a fluid is provided. In one embodiment of the present invention, the microscope is modified to include a first beam splitter, splitting a visual of the specimen magnified by the objective lens. A first beam is then provided to an audio frequency modulation sensing (AFMS) device, whose function is to sense photoacoustic modulation of the specimen and to extract aural data, allowing sound energy to be observed by a user (e.g., displayed on screen, played on a speaker, etc.). The second beam is provided to a second beam splitter, allowing visuals to be provided to the eyepiece and to at least one other sensor, where a second visual of the specimen is captured. The second visual can then be displayed on a screen in time synchronization with aural data provided by the AFMS device.