He set out to discover how long it takes for VO2 to change from one state to another for his thesis. In his experiments, Samizadeh Nikoo administered an electric existing to a VO2 sample. The VO2 changed state as the current heated the sample.” The VO2 seemed to remember the first phase shift and anticipate the next,” discusses Professor Elison Matioli, who heads the POWERlab. VO2 checks all three of these boxes.
” The VO2 appeared to keep in mind the first phase shift and anticipate the next,” describes Professor Elison Matioli, who heads the POWERlab. “We didnt anticipate to see this type of memory impact, and it has absolutely nothing to do with electronic states however rather with the physical structure of the product. Its an unique discovery: no other material behaves in this way.”
A memory of as much as three hours
The researchers found that VO2 may remember its most current external stimulus for approximately 3 hours. “The memory impact could in reality persist for a number of days, but we do not currently have actually the instruments needed to determine that,” states Matioli.
VO2 checks all 3 of these boxes. Its continuous, structural memory identifies it from normal products that save information as binary details depending on the manipulation of electrical states.
The researchers carried out a host of measurements to reach their conclusions. They also validated their outcomes by applying the new method to different products at other laboratories all over the world. This discovery replicates well what occurs in the brain, as VO2 switches act much like nerve cells.
Recommendation: “Electrical control of glass-like characteristics in vanadium dioxide for data storage and processing” by Mohammad Samizadeh Nikoo, Reza Soleimanzadeh, Anna Krammer, Guilherme Migliato Marega, Yunkyu Park, Junwoo Son, Andreas Schueler, Andras Kis, Philip J. W. Moll, and Elison Matioli, 22 August 2022, Nature Electronics.DOI: 10.1038/ s41928-022-00812-z.
Vanadium Dioxide (VO2), a compound capable of “remembering” the entire history of previous external stimuli. Credit: POWERlab/ 2022 EPFL
Vanadium Dioxide has the capability to “keep in mind” the whole history of past ecological stimuli.
Throughout his research on phase transitions in Vanadium Dioxide (VO2), Mohammad Samizadeh Nikoo, a Ph.D. student at Ecole Polytechnique Fédérale de Lausannes (EPFL) Power and Wide-band-gap Electronics Research Laboratory (POWERlab), made an unforeseen finding When unwinded at space temperature, VO2 has an insulating phase and experiences a sharp insulator-to-metal shift at 68 ° C, where its lattice structure modifications.
According to Samizadeh Nikoo, VO2 has an unstable memory: “the material reverts back to the insulating state right after removing the excitation.” He set out to discover how long it takes for VO2 to change from one state to another for his thesis. Nevertheless, his examination took a various turn: after collecting numerous measurements, he found a memory result in the products structure.
An unexpected finding.
In his experiments, Samizadeh Nikoo administered an electric current to a VO2 sample. The VO2 changed state as the present heated the sample.