Photo credit: Ran Huo and Jianyu Li
McGill University researchers have found that hydrogel bandages can be made sticker and longer lasting by using ultrasound waves and bubbles. This is a game changer for medical adhesives, especially in cases where they are difficult to apply such as on wet skin. How so? The ultrasound induces microbubbles, which transiently push the adhesives into the skin for stronger bioadhesion.
The researchers were even able to utilize theoretical modeling to estimate exactly where the adhesion will happen. During their tests, they discovered that the adhesives are compatible with living tissue in rats, thus could potentially be used to deliver drugs through the skin. We can’t forget that researchers already made 3D-printed, human-like fingertip that feels like actual skin.
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We were surprised to find that by simply playing around with ultrasonic intensity, we can control very precisely the stickiness of adhesive bandages on many tissues,” said Zhenwei Ma, lead author and a former student of Professor Li and now a Killam Postdoctoral Fellow at the University of British Columbia.
