A sprinkle of platinum nanoparticles onto graphene makes brain probes more sensitive

Graphene electrodes could enable higher quality brain imaging thanks to new research by a team of engineers and neuroscientists. The researchers developed a technique, using platinum nanoparticles, to lower the impedance of graphene electrodes by 100 times while keeping them transparent. In tests on transgenic mice, the electrodes were able to record and image neuronal activity (calcium ion spikes) at of large groups of neurons and individual brain cells.