The latest ultrasound technology is so sensitive that it can hear the sound of living bacteria and cells.
The scientists at the University of Queensland (Australia) have developed a silicon chip containing ultra-precise ultrasonic sensors that can measure tiny vibrations of air molecules, writes ZDNet.
This high-frequency sensor (up to 1 MHz) has a sensitivity about a hundred times greater than anything that was previously created. The silicon chip uses a type of biomedical ultrasound called photo-acoustic, where an acoustic impulse is generated in the body by laser or other means, and then an acoustic wave is detected by ultrasonic sensors and spread throughout the body.
One of the possible applications of such a sensor is that its precise ultrasonic measurements can capture the vibrations of thousands of cells and without damaging them, determine whether they are healthy or cancerous.
Technologies that are used today can only consider a small number of cells at a time and also have a limited cycle of use because they are contaminated when they come into contact with a cell.
Another advantage of this technology is that scientists can better understand biological processes by observing the movement of cells in the body. For example, it will be possible to monitor red blood cells to understand how blood flows in the brain.