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This study investigates the generation and application of cold plasma using a DC potential and its role in enhancing the properties of diamond-like carbon (DLC) films. Unlike thermal plasma, cold plasma features high-temperature electrons, and room-temperature heavy particles, achieved here by introducing argon gas between cathode and anode plates under a DC electric field. Various characterization techniques such as Raman, XRD, FESEM, EDX, and Nano-indentation were utilized. Raman Analysis revealed D and G peaks indicating graphitization and presence of a carbon layer. XRD indicated the presence of Ultra Nano-crystalline diamond phase. FESEM and EDX analysis confirmed bi-layer formation as well as elemental composition. A significant improvement in the nanomechanical properties were observed which showed improved hardness and Young’s modulus reaching 21.27 and 258 GPa, respectively. Moreover, an improvement in heat transfer characteristics were observed when films were coated over stainless steel substrates, inferring to potential of DLC films in both high mechanical and thermal management application.

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Enhancing Diamond-Like Carbon Films Through Cold Plasma: Structural, Mechanical, and Thermal Insights

  • 会议论文

  • 发表日期：

    2026年

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  • Mohd. Sarim Khan,
  • Lokendra Kumar Katiyar,
  • Manish Kumar,
  • C. Sasikumar,
  • Pavan Meena

摘要

This study investigates the generation and application of cold plasma using a DC potential and its role in enhancing the properties of diamond-like carbon (DLC) films. Unlike thermal plasma, cold plasma features high-temperature electrons, and room-temperature heavy particles, achieved here by introducing argon gas between cathode and anode plates under a DC electric field. Various characterization techniques such as Raman, XRD, FESEM, EDX, and Nano-indentation were utilized. Raman Analysis revealed D and G peaks indicating graphitization and presence of a carbon layer. XRD indicated the presence of Ultra Nano-crystalline diamond phase. FESEM and EDX analysis confirmed bi-layer formation as well as elemental composition. A significant improvement in the nanomechanical properties were observed which showed improved hardness and Young’s modulus reaching 21.27 and 258 GPa, respectively. Moreover, an improvement in heat transfer characteristics were observed when films were coated over stainless steel substrates, inferring to potential of DLC films in both high mechanical and thermal management application.