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High definition diagnostic ultrasonics on the nanoscale
Date:8/16/2010

ltrasound the transducers are very slightly deformed and this changes their optical resonances which are detected by a laser.

The devices can be constructed either by micro/nano lithography techniques similar to those used for microchips or by molecular self assembly where the transducers are constructed chemically.

Perhaps the most familiar application of ultrasonics is medical imaging but it is also widely used in engineering applications and for chemical sensing. These tiny transducers open up the possibility of using these techniques on the smallest scales, for instance inside cells and on nano-engineered components.

Dr Clark said: "Imagine imaging inside cells in the same way that ultrasonic imaging is performed inside bodies. Theoretically we could get higher resolution with the nano-ultrasonics than you can with optical microscopes and the contrast would be very interesting. In addition the transducers can be made into highly sensitive chemical sensors ultrasonics SAW sensors are used on the normal scale for electronic noses this would allow you to distribute chemical sensors in tissue or in paint so you could make paint with chemical sensors to detect corrosion or explosives in it."


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Contact: Lindsay Brooke
lindsay.brooke@nottingham.ac.uk
44-115-951-5751
University of Nottingham
Source:Eurekalert

Page: 1 2

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