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<p>Versatile, self-powered chemical sensing is essential for environmental monitoring, industrial safety and point-of-care diagnostics, yet remains challenging to realize in compact, fully autonomous systems. Here we present a platform that integrates graphene-based devices for chemical sensing, monolayer MoS<sub>2</sub> logic circuits for on-chip digitization and a silicon photovoltaic module for energy harvesting. The graphene sensors detect a diverse set of analytes, including inorganic salts, alcohols and sugars, as well as liquids spanning wide ranges of physical properties such as viscosity and surface tension. We further demonstrate sensing of environmental pollutants and food-relevant and bio-relevant fluids, highlighting the platform’s versatility. The MoS<sub>2</sub> circuitry converts analogue responses from the graphene sensors into stable digital outputs in real time, while the photovoltaic module powers both sensing and processing under ambient light. These results establish a pathway towards compact, deployable, self-powered chemical sensing systems for diverse real-world applications.</p>

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Self-powered chemical sensing via graphene, MoS2 and silicon integration

  • 期刊论文

  • 发表日期：

    2026年3月31日

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  • Anshul Rasyotra,
  • Subir Ghosh,
  • Rishikesh T. Nair,
  • Pranavram Venkatram,
  • Anirban Chowdhury,
  • Md Sajjad Alam,
  • Jishnu M. Kumar,
  • Krishnendu Mukhopadhyay,
  • Saptarshi Das

摘要

Versatile, self-powered chemical sensing is essential for environmental monitoring, industrial safety and point-of-care diagnostics, yet remains challenging to realize in compact, fully autonomous systems. Here we present a platform that integrates graphene-based devices for chemical sensing, monolayer MoS2 logic circuits for on-chip digitization and a silicon photovoltaic module for energy harvesting. The graphene sensors detect a diverse set of analytes, including inorganic salts, alcohols and sugars, as well as liquids spanning wide ranges of physical properties such as viscosity and surface tension. We further demonstrate sensing of environmental pollutants and food-relevant and bio-relevant fluids, highlighting the platform’s versatility. The MoS2 circuitry converts analogue responses from the graphene sensors into stable digital outputs in real time, while the photovoltaic module powers both sensing and processing under ambient light. These results establish a pathway towards compact, deployable, self-powered chemical sensing systems for diverse real-world applications.