Artist’s impression of the first material capable of remembering electrical stimuli (source: POWERlab / 2022 EPFL) © ANSA / Ansa
Surprises from material commonly used in electronics: vanadium dioxide he can remember least 3 hours in received electrical stimuli it is “learning” to respond to new stimuli. A unique property that could make it useful for new applications in many industries such as manufacturing. future artificial neurons. A student at the Polytechnic University of Lausanne (Epfl), who described the phenomenon in the journal Nature Electronics, unexpectedly managed to discover this.
Vanadium dioxide (VO2) has been used in many industries for some time and has a number of important characteristics that keep it under constant scrutiny by researchers interested in expanding its possible applications. In a series of experiments of this type, EPFL doctoral student Mohammad Samizade Niku analyzed its insulating properties under changes in temperature and electrical stimuli. This phenomenon is already known and is associated with a change in the internal arrangement of atoms. But by repeating the experiment several times and measuring the timing of these transitions, he found that “VO2 seemed to ‘remember’ the first phase transition and anticipate the next one,” said Alison Matioli, head of Samizade Nicu’s research lab. “No other material behaves like this,” he added.
A kind of memory of a previously received electrical impulse allows the material to respond faster when stimulated again. The discovery he could make important applications especially in the world microelectronics as materials capable of long and stable storage of received electrical impulses are considered very useful for reduction of power consumption of chips or increase speed. Another possible application would be the production future artificial neuronsthat is, chips inspired by the functioning of human neurons and capable of revolutionizing the world of computing.
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