Researchers say that a new type of soft material they have created by using a unique 3D printer connects thousands of water droplets, 50 microns in diameter each, encapsulated within lipid (fat) films, which can perform some of the functions of the cells inside our bodies. These printed “droplet networks,” they say could be the building blocks of a new kind of technology to deliver drugs precisely where they are needed and could one day replace or fill in damaged human tissues.

'We aren't trying to make materials that faithfully resemble tissues but rather structures that can carry out the functions of tissues,' said Professor Hagan Bayley of Oxford University's Department of Chemistry, who led the research. 'We’ve shown that it is possible to create networks of tens of thousands connected droplets. The droplets can be printed with protein pores to form pathways through the network that mimic nerves and are able to transmit electrical signals from one side of a network to the other.'

The droplet networks can be designed to fold into different shapes after printing, which resembles muscle movement, and is powered by osmolarity differences that generate water transfer between droplets.

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