To build amazing computers, mimic the brain?

Researchers have discovered a solid-state material mimics the neural signals responsible for transmitting information in the human brain. The work is a step toward developing circuitry that functions like the human brain--neuromorphic computing. The researchers discovered a neuron-like electrical switching mechanism in the solid-state material β'-CuxV2O5--specifically, how it reversibly morphs between conducting and insulating behavior on command. The team was able to clarify the underlying mechanism driving this behavior by taking a new look at β'-CuxV2O5, a remarkable chameleon-like material that changes with temperature or an applied electrical stimulus. In the process, they zeroed in on how copper ions move around inside the material and how this subtle dance in turn sloshes electrons around to transform it.