BPoD has moved!

BPoD has recently changed our domain name - we can now be found at bpod.org.uk

Please update your bookmarks!

Now in our 13th year of bringing you beautiful imagery from biomedical science every day

Search the archive of over 4000 images

Sound waves guide particles – potential applications include tissue engineering and drug delivery

30 October 2021

Wall of Sound

Our bodies use vessels, pumps and valves to push chemicals from where they’re made to where they’re needed – everything from blood cells to nutrients and waste are commuting inside us right now. Scientists mimic this outside the body, using microfluidic devices to test tiny machines to guide the flow of drugs around tissues. But what if we could push our particles without touching them? Here, scientists create ‘walls’ to guide the flow – walls made from sound. To use their ‘shadow waveguide’, they create a shaped pattern of sound waves (in this case, a curve) near a chamber containing the particles. Some of the energy leaks across into the chamber – a sort of sound ‘shadow’ of the curve which influences the particles without contact. This new form of acoustic tweezers may one day help tissue engineers to trap and manipulate cells or float drug molecules to exactly the right place – sounds good.

Written by John Ankers

Search The Archive

Submit An Image

Follow on Tumblr

Follow on Instagram

What is BPoD?

BPoD stands for Biomedical Picture of the Day. Managed by the MRC Laboratory of Medical Sciences until Jul 2023, it is now run independently by a dedicated team of scientists and writers. The website aims to engage everyone, young and old, in the wonders of biology, and its influence on medicine. The ever-growing archive of more than 4000 research images documents over a decade of progress. Explore the collection and see what you discover. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

Read More

BPoD is also available in Catalan at www.bpod.cat with translations by the University of Valencia.