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Updated: Jun 14, 2026

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Electromagnetic Radiation Stimulated Learning in Perovskite Nickelates.

Ranjan Kumar Patel1, Kabir Zama1, Matthew Smart2

  • 1Department of Electrical and Computer Engineering, Rutgers University, Piscataway, New Jersey, USA.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|June 12, 2026
PubMed
Summary

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Perovskite nickelate films exhibit biological plasticity-like behaviors when exposed to electromagnetic radiation. Different frequencies induce short-term or long-term changes, mimicking learning and memory processes.

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Neuroscience

Background:

  • Biological plasticity, the ability of synapses to adapt strength, is crucial for learning and memory.
  • This plasticity occurs across various timescales, from rapid short-term plasticity (STP) to slower long-term plasticity (LTP).

Purpose of the Study:

  • Investigate perovskite nickelate thin films as an analogue for biological learning behaviors.
  • Explore electromagnetically driven relaxation dynamics across different radiation frequencies.
  • Assess the potential of these materials for adaptive optoelectronic hardware.

Main Methods:

  • Exposed perovskite nickelate thin films to radio frequency (RF), infrared (IR), visible, and ultraviolet (UV) radiation.
  • Compared relaxation dynamics and conductivity changes induced by different electromagnetic stimuli.
Keywords:
electromagnetic radiationglassy dynamicshabituationmulti‐timescale memoryneuromorphic materialsperovskite nickelatessynaptic plasticity

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  • Utilized a minimal dynamical systems model to analyze UV-induced resistance changes.

    • Main Results:

    • RF excitation primarily induced short-term plasticity (STP).
    • Visible and IR illumination resulted in reversible relaxation on behavioral timescales.
    • UV illumination caused persistent, non-thermal conductivity changes, exhibiting glass-like dynamics, habituation, sensitization, and spontaneous recovery.
    • Electromagnetic frequency enabled relaxation dynamics spanning nine orders of magnitude.

    Conclusions:

    • Perovskite nickelates demonstrate multi-timescale adaptive behaviors analogous to biological plasticity.
    • UV-induced effects in nickelates show complex dynamics including aging and habituation.
    • These findings suggest perovskite nickelates as promising materials for adaptive optoelectronic devices and for bridging computational neuroscience with quantum technologies.