British researchers said on the 16th that they made the world's smallest ultrasonic sensor. It is so tiny that it can line up on a strand of hair. This result can be widely used to explore the microscopic environment inside the cell.
The University of Nottingham in the United Kingdom issued a communiqué that day, saying that the school's applied optics research team made this miniature ultrasonic sensor. It is much smaller than existing ultrasonic sensors. Only 500 such sensors can be lined up to reach the width of a hair strand. It has both ultrasonic and optical properties, and it deforms slightly when it senses ultrasonic waves. This deformation can be detected by the laser irradiating them to obtain the information of ultrasonic waves; conversely, if it emits a laser pulse, Can be stimulated to send out ultrasonic waves to detect the target object.
Researcher Matt Clark said that the rise of nanotechnology has created a demand for miniature ultrasonic detectors, and the new equipment they have developed extends ultrasonic detection technology to the nanoscale. At present, the ultrasound application that people are more familiar with is medical examination. This new device can be used to perform ultrasound examination on the inside of a cell to provide physiological information that was difficult to obtain in the past.
In addition, the resolution of this ultrasonic sensor is also very high, the frequency of the sound wave it uses exceeds the frequency of visible light, so in theory it can obtain a clearer image than the best optical microscope.
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