Thermal transport in silver-coated polymer sphere composites by the bidirectional 3<i>ω</i> method

The bidirectional 3[Formula: see text] method is an electrothermal technique that commonly used to obtain the thermal conductivity of materials such as liquids, biological samples, and pastes. In this work, epoxy-based adhesive was filled with monodisperse 10 μm polymethyl methacrylate spheres coated silver thin films (AgPS), a metallic network dominated transport formed through composite. conductive at different volume fractions AgPS. For 50 vol.% AgPS, corresponding 3.4 silver, [Formula: W m −1 K . results show strongly correlated AgPS fraction, while maintaining fraction far below commercial paste, which has typical filler 40 silver. work were compared measurements same material by other techniques, advantages disadvantages methods finally discussed.