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Thirdly, the ZnO nanoparticles are photoresponsive and generate a photocurrent when exposed to pulsed UV light and a constant voltage.

This photocurrent mimics the responses transmitted by synapsis in the human brain, enabling the device to interpret and process biological information received from optical sensors.

"Our experiments show that photocurrent streamline microscopy is a robust new experimental tool to visualize a photocurrent in quantum materials. This tool helps us look at how electrons behave badly."

Gabor said the team combined laser imaging with novel light-sensitive devices to come up with the first images of photocurrent streamlines through a working device.

A photocurrent is an electric current induced by the action of light.