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<p>In recent years, the integration of advanced material systems has shown remarkable potential for the development of high-performance motion sensors. Among them, only a limited number have demonstrated potential for integration into wearable electronics with energy-harvesting capabilities. Herein, a MoS<sub>2</sub>/BaTiO<sub>3</sub> nanocomposite was developed and employed as a self-powered, standalone sensor node for a mechanical imparting sensing device. Specifically, the optical absorption of the MoS<sub>2</sub>/BaTiO<sub>3</sub> nanocomposite was tuned by adjusting the concentration of BaTiO₃ nanoparticles. Notably, the nanocomposite not only improved charge separation but also reduced the band gap compared to the BaTiO<sub>3</sub> nanoparticles. It proved ideal for converting mechanical energy into electrical energy, which was subsequently stored in a capacitor. Impressively, the sensor node is highly flexible and capable of detecting eye blinking with a high signal level (~2.26 V). This performance significantly exceeds that of traditional electrooculograms (~1 mV) and triboelectric nanogenerators (~750 mV) used in human–machine interfaces. Notably, the generated signals can trigger wireless communication and remotely control the movement of a robotic hand. The developed sensor demonstrates strong potential for application in communication interfaces for individuals with amyotrophic lateral sclerosis and in blink-triggered exoskeleton control.</p>

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Multifunctional flexible BaTiO₃/MoS₂ nanocomposite embedded in silicone matrix for next-generation eye blink sensing, energy harvesting, and wearable electronics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月25日

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  • Sai Krishna Chaitanya Koppula,
  • Darshan Kapur,
  • Yatin Kohli,
  • Vanish Kumar,
  • Mrinmoy Misra

摘要

In recent years, the integration of advanced material systems has shown remarkable potential for the development of high-performance motion sensors. Among them, only a limited number have demonstrated potential for integration into wearable electronics with energy-harvesting capabilities. Herein, a MoS2/BaTiO3 nanocomposite was developed and employed as a self-powered, standalone sensor node for a mechanical imparting sensing device. Specifically, the optical absorption of the MoS2/BaTiO3 nanocomposite was tuned by adjusting the concentration of BaTiO₃ nanoparticles. Notably, the nanocomposite not only improved charge separation but also reduced the band gap compared to the BaTiO3 nanoparticles. It proved ideal for converting mechanical energy into electrical energy, which was subsequently stored in a capacitor. Impressively, the sensor node is highly flexible and capable of detecting eye blinking with a high signal level (~2.26 V). This performance significantly exceeds that of traditional electrooculograms (~1 mV) and triboelectric nanogenerators (~750 mV) used in human–machine interfaces. Notably, the generated signals can trigger wireless communication and remotely control the movement of a robotic hand. The developed sensor demonstrates strong potential for application in communication interfaces for individuals with amyotrophic lateral sclerosis and in blink-triggered exoskeleton control.