Underwater sound tester based on tunnel microscope

Abstract

Provided is an underwater sound tester based on a tunnel microscope, comprising a Z-directional nanometer level feeding drive unit, a point electrode, a floatable substrate, and a flat end electrode. The floatable substrate is arranged at a water surface flat end; the flat end electrode is adhered to the surface of the floatable substrate; the Z-directional nanometer level feeding drive unit is provided with an outer guide rod; the end portion of the outer guide rod is arranged above the flat end electrode; the point electrode is arranged at the end portion of the outer guide rod; the Z-directional nanometer level feeding drive unit regulates the distance between the point electrode and the flat end electrode, and when the distance between the two electrodes is smaller than 100 nm, tunnel current is generated between the two electrodes; when a container water surface is still, the tunnel current rarely changes, and when the water surface is rippled by interference, ripples spread to and shake the floatable substrate, the distance between the two electrodes is changed, and the tunnel current is changed. The underwater sound tester can be used for the improvement of nautical instruments and underwater sound devices, and has high precision and great repeatability.

Description

technical field [0001] The invention relates to a tunnel microscope-based hydroacoustic tester for measuring micro-water surface fluctuations. Background technique [0002] Since 1982, Dr. Gerd Binnig and Dr. Heinricn Rohrer of the Zurich Laboratory of International Business Machines Corporation have developed the world's first scanning tunneling microscope (STM) by using the tunneling effect in quantum mechanics, enabling humans to observe the movement of individual atoms on the surface of matter in real time for the first time. The arrangement state and the physical and chemical properties related to the surface electronic behavior not only provide a powerful observation and experimental tool for the development of nanotechnology, but also directly promote the rapid development of nanotechnology. As a milestone in the history of nanotechnology and nanotechnology development The scanning tunneling microscope was recognized by the international scientific community as one of...

AI Technical Summary

Problems solved by technology

[0004] Although the method of using tunneling current to detect distance or displacement has a high resolution, the current equipment (including scanning tunneling microscopes) using this method is complex in structure, requires special personnel to operate, and needs to be calibrated many times during use. Expensive, very limited in use occasions or application fields

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