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Enabling Advanced Bioinspired Computing and Hardware Security in Sb2(S,Se)3 Memristors via Titanium Interfacial

Yuanfeng Sun1, Yuanhui Yang1, Liangliang Feng1

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Researchers developed a novel Ti/Sb2(S,Se)3 interface for memristors, enhancing artificial intelligence. This breakthrough enables stable, high-performance neuromorphic computing for bioinspired and secure applications.

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Area of Science:

  • Materials Science
  • Neuroscience
  • Computer Science

Background:

  • Memristor performance is limited by the electrode/functional layer interface, hindering neuromorphic computing.
  • Chalcogenide semiconductors offer unique stimuli sensitivity but require interface optimization.
  • Developing stable memristors is crucial for advanced AI sensory perception and secure data processing.

Purpose of the Study:

  • To engineer a novel Ti/Sb2(S,Se)3 heterojunction interface for improved memristor performance.
  • To address the bottleneck in ion migration and charge injection at the memristor interface.
  • To enable memristors for complex biomimetic functions and secure computing.

Main Methods:

  • Fabrication of a novel Ti/Sb2(S,Se)3 heterojunction interface.
  • Interfacial engineering to reduce the built-in electric field and facilitate stable selenium vacancy conductive filaments (CFs).
  • Characterization of memristor performance, including on/off ratio, endurance, and retention.

Main Results:

  • The engineered interface successfully reduced the built-in electric field, enabling stable selenium vacancy CFs.
  • Sb2(S,Se)3 memristors demonstrated superior performance: high on/off ratio, stable endurance, and long-term retention.
  • The device simulated image encryption and emulated nociceptive perception, showcasing biomimetic capabilities.

Conclusions:

  • Interfacial engineering is a versatile strategy for developing stable, high-performance chalcogenide memristors.
  • The novel Ti/Sb2(S,Se)3 interface enhances memristors for advanced bioinspired and secure computing.
  • This work paves the way for sophisticated sensory perception and secure data processing in neuromorphic systems.