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Showing posts with the label ultrasound

Laser-like sound amplification: stimulating electrons within a crystal, causing faster than speed of sound phonon burst

https://www.eurekalert.org/news-releases/1125836 "trap electrons in few atoms thick crystal layer restricting movement to 2D making behavior more predictable /wave-like, apply high electric current, electrons energize/ emit sound while surrounding crystal stays near absolute 0... ultrasound imaging through solid metal/ deep biological tissue with much higher resolution, vibrations process data faster/ channel heat away from microchips, medical diagnostics, global communication, sonar... future: graphene crystal for even higher speeds"
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Proximal sound 3D printing uses focused ultrasound waves to trigger chemical reactions that solidify liquid polymers like silicone

https://techxplore.com/news/2026-02-based-3d-method-enables-finer.html "higher precision/ efficiency positioning sound source closer to printing surface... works with materials required for flexible electronics/ microfluidics... achieves complex, multi-material features up to 10X smaller using less power... much higher repeatability/ consistency... healthcare: faster medical diagnostic tool prototyping, lab-on-a-chip systems, wearables: advanced flexible sensors/ soft robotic components, environmental monitoring: highly sensitive microscale sensors for real-time data collection"
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Flexible, strong, freeze-/ dehydration- resistant Sonogel uses ultrasound for faster, greener, safer way to make hydrogels

https://phys.org/news/2025-05-ultrasound-safer-greener-hydrogels.html "no toxic chemical initiators... sound applied to liquid precursor creates microscopic bubbles collapsing with immense energy, forming gel within minutes... 5 minutes ultrasound, not hours /overnight under UV...  ultrasound penetrates deep into tissues enabling in-body hydrogel formation without surgery... injecting liquid precursor then using ultrasound solidifying precisely where needed... tissue engineering, bioadhesives, 3D bioprinting" Related: Ultrasound-guided 3D bioprinting enables deep-tissue implant fabrication in vivo https://www.eurekalert.org/news-releases/1082646
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Researchers use ultrasound to control orientation of small particles

https://phys.org/news/2023-06-ultrasound-small-particles.html "nanorods half platinum and half gold placed in microchannel nozzle, added hydrogen peroxide burned on platinum half forcing them to swim imitating bacteria, applied ultrasound producing acoustics that separate nanorod extrude from nozzle, control and eject particles based on shape, frequency... nanorods and spherical particles have different responses acoustic radiation and generated fluid flow... bioprinting, 3D printing and drug delivery."
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A vision-based robotic system for 3D ultrasound imaging

https://techxplore.com/news/2021-08-vision-based-robotic-3d-ultrasound-imaging.html "can monitor an object's motion and automatically update the sweep trajectory to provide 3D compounded images of the target anatomy seamlessly... could allow physicians and healthcare providers to gather more reliable anatomical data using ultrasound technology... non-invasive, low-cost and radiation-free" Related: Silicon ultrasound patch achieves both eco-friendliness and performance enhancement https://www.eurekalert.org/news-releases/1100468
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