Scientists have created an ultrasonic detector 100 times smaller than a human hair

Researchers Announce Development of Smallest Ultrasonic Detector to Deliver Ultra-High Resolution Imaging.

Since the introduction of medical ultrasound imaging in the 1950s, the technology has been based on the use of piezoelectric detectors that convert the pressure of ultrasound waves into electrical voltage. The resolution of the image of tissues and materials depends on their size, but when they are significantly reduced, their sensitivity decreases, which does not allow increasing their efficiency..

A team of scientists from the Technical University of Munich and the German Research Center for Environmental Health have created a silicon waveguide reference detector from miniature photonic circuits that track changes in light intensity. Its size is about half a micron, which is 10 thousand times smaller than the smallest piezoelectric detector and 200 times smaller than the ultrasound wavelength. This allows you to visualize parts less than one micrometer in size..

Scientists have created an ultrasonic detector 100 times smaller than a human hair

Small size makes detectors not only efficient, but also cheap, and also allows them to be integrated into portable devices and used to study the fundamental properties of ultrasonic waves..

Earlier, we also reported on the creation of a camera that can show what is happening in human cells..

text: Ilya Bauer, photo: Helmholtz Zentrum Muenchen

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