Unification and DC Conductivity of PDMS/NiNPs Nanocomposite

Year : 2026 | Volume : 15 | 01 | Page :
    By

    Ashish Kumar,

  • Pankaj Kumar Modi,

  1. Research Scholar, Department of Physics, College of Commerce Arts & Science, Patliputra University, Patna, Bihar, India
  2. Assistant Professor, Department of Physics, College of Commerce Arts & Science, Patliputra University, Patna, Bihar, India

Abstract

The DC conductivity of nickel nanoparticles–polydimethylsiloxane (NiNPs–PDMS) composite materials has attracted considerable attention due to their promising applications in flexible electronics, sensors, and energy storage devices. The electrical performance of these composites is largely governed by the formation of conductive networks within the insulating polymer matrix. Incorporating nickel nanoparticles into PDMS introduces conductive pathways that significantly enhance DC conductivity once a critical percolation threshold is reached.Several key factors influence the DC conductivity of NiNPs–PDMS composites. The size and morphology of nickel nanoparticles play a crucial role, as smaller particles with higher surface area-to-volume ratios facilitate better particle–particle contact and more efficient conductive networks. Equally important is the uniform dispersion of nanoparticles within the PDMS matrix, as poor dispersion or agglomeration can disrupt conductive pathways and limit charge transport.The loading fraction of nickel nanoparticles strongly affects conductivity. Increasing filler concentration generally leads to higher conductivity due to the increased number of conductive paths. However, excessive nanoparticle loading may cause agglomeration, which can reduce effective conductivity and compromise mechanical flexibility. Interfacial interactions between NiNPs and the PDMS matrix also significantly impact electrical behavior. Surface functionalization of nanoparticles can improve compatibility with PDMS, enhance dispersion, and promote efficient charge transfer across interfaces.Temperature dependence is another critical aspect of DC conductivity in NiNPs–PDMS composites. Elevated temperatures typically increase conductivity by enhancing electron mobility and hopping mechanisms. Nevertheless, at excessively high temperatures, polymer degradation or nanoparticle aggregation may occur, leading to a decline in electrical performance. Understanding these factors is essential for optimizing NiNPs–PDMS composites for practical applications.
In our this study, we prepared a polymer nanocomposite using Polydimethylsiloxane (PDMS) as the polymer network and Ni nanoparticles as a dopant. The PDMS nanocomposites were loaded with different weight percentages (wt%) of NiNPs filler. The electrical properties of these nanocomposites over a wide temperature range were analyzed by us. Our findings indicate that the electrical conductivity of the nanocomposites strongly depends on weight- percentage of the Ni nanoparticles. Understanding these factors is crucial for tailoring the electrical properties of these composites for specific applications.

Keywords: DC conductivity, NiNPs-PDMS, composite materials, nickel nanoparticles, polydimethylsiloxane

How to cite this article:
Ashish Kumar, Pankaj Kumar Modi. Unification and DC Conductivity of PDMS/NiNPs Nanocomposite. Research & Reviews : Journal of Physics. 2026; 15(01):-.
How to cite this URL:
Ashish Kumar, Pankaj Kumar Modi. Unification and DC Conductivity of PDMS/NiNPs Nanocomposite. Research & Reviews : Journal of Physics. 2026; 15(01):-. Available from: https://journals.stmjournals.com/rrjophy/article=2026/view=236354


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Ahead of Print Subscription Original Research
Volume 15
01
Received 29/12/2025
Accepted 12/01/2026
Published 27/01/2026
Publication Time 29 Days
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