• Impact of size and temperature on thermal expansion of nanomaterials

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    • Keywords


      Equation of state; size effect; nanomaterials; thermal expansion.

    • Abstract


      A theoretical method has been discussed to study the size dependency of thermal expansion of nanomaterials at higher temperature by considering the surface effect. A thermodynamical analysis of the equation of state (EoS) is studied from the knowledge of thermal expansion of nano-materials based on theoretical thermodynamical relations. It is observed that thermal expansion coefficient increases with decrease in grain size whereas, 𝑉/𝑉0 increases with increase in temperature for nanomaterials of different grain sizes. We have studied the size and temperature dependence of thermal expansion of Cu, Ag, Ni, Sn, Se and Zn nanomaterials in different shapes (spherical, nanowire and nanofilm). The available experimental data confirm these theoretical predictions that demonstrate the validity of our work.

    • Author Affiliations


      Madan Singh1 Mahipal Singh2

      1. Department of Physics and Electronics, National University of Lesotho, Lesotho, South Africa
      2. Department of Physics, Government Post Graduate College, Bageshwar 244 713, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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