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