Publications by authors named "Azadeh Zandieh"

Article Synopsis
  • * A new fabrication method for polymer/BNNT composites is described, involving melt-compounding, in situ fibrillation, and sintering to create materials with improved directional thermal conductivity.
  • * The resulting composites show a 450% increase in in-plane thermal conductivity, achieving significant heat dissipation benefits and maintaining low dielectric properties, making them suitable for applications in electronic packaging and cooling systems.
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Ideal dielectric materials for microelectronic devices should have high directionally tailored thermoconductivity with low dielectric constant and loss. Hexagonal boron nitride (hBN) with excellent thermal and dielectric properties shows a promise for the fabrication of thermoconductive dielectric polymer composites. Herein, a simple method for the fabrication of lightweight polymer/hBN composites with high directionally tailored thermoconductivity and excellent dielectric properties is presented.

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Lightweight high-density polyethylene (HDPE)-graphene nanoplatelet (GnP) composite foams were fabricated via a supercritical-fluid (SCF) treatment and physical foaming in an injection-molding process. We demonstrated that the introduction of a microcellular structure can substantially increase the electrical conductivity and can decrease the percolation threshold of the polymer-GnP composites. The nanocomposite foams had a significantly higher electrical conductivity, a higher dielectric constant, a higher electromagnetic interference (EMI) shielding effectiveness (SE), and a lower percolation threshold compared to their regular injection-molded counterparts.

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