The new biosensors allow for simultaneous recording and imaging of tissues and organs during surgical procedures. In this photo, researchers attached the biosensor to the heart of a pig that was obtained commercially. (Image: Bongjoong Kim, Purdue University)

A research team developed bio-inks for biosensors that could help localize critical regions in tissues and organs during surgical operations. The ink is biocompatible and provides a user-friendly design with workable time frames of more than one day. Simultaneous recording and imaging could be useful during heart surgery in localizing critical regions and guiding surgical interventions such as a procedure for restoring normal heart rhythms.

Los Alamos researchers formulated and synthesized the bio-inks, with the goal of creating an ultra-soft, thin, and stretchable material for biosensors that is capable of seamlessly interfacing with the surface of organs. They did this using 3D-printing techniques.

Silicone materials are liquid, making it very challenging to 3D-print without sagging and flowing issues during printing. The printed bio-inks, however, do not have any shape deformation during the curing process.

The bio-inks are softer than tissue, stretch without experiencing sensor degradation, and have reliable natural adhesion to the wet surface of organs without needing additional adhesives.

For more information, contact Nick Njegomir at This email address is being protected from spambots. You need JavaScript enabled to view it.; 505-695-8111.