Fabrication and thermal analysis of a copper/diamond/copper thermal spreading device

Dependency of Nanodiamond Particle Size and Outermost-Surface Composition on Organo-Modification: Evaluation by Formation of Organized Molecular Films and Nanohybridization with Organic Polymers

“…Nanodiamond, which is a spherical nanocarbon material, was expected to achieve uniform dispersion in a polymer matrix. Polymer/nanocarbon hybrid materials , have now captured the attention of scientists and engineers due to their remarkably high dimensional stability and gas-barrier performance, in addition to their superior mechanical properties relative to conventional composite materials. , The high thermal conductivity, , high refractive index, , antibacterial activity, , increased conductivity, , and nonphotobleaching fluorescence , of nanodiamonds have spurred tireless research efforts on using these materials in products such as heat spreaders, , photonic crystals, , medical applications, electronics and sensors, , and biosensors. , However, the influence of the water nanolayer adsorbed on the outermost surface prevents dispersion of nanodiamond fillers in hydrophobic polymers; aggregates tend to form due to affinity interactions between the adsorbed water layers. Researchers have previously attempted to produce single/multiparticle layers of inorganic materials at the air/water interface and nanocomposites with hydrophobic polymers by chemical surface modification of nanoclays, zirconia, zinc oxide nanodiscs, and magnetic nanoparticles using long-chain compounds (ammonium cations or carboxylates).…”

“…Polymer/nanocarbon hybrid materials 17,18 have now captured the attention of scientists and engineers due to their remarkably high dimensional stability and gas-barrier performance, in addition to their superior mechanical properties relative to conventional composite materials. 19,20 The high thermal conductivity, 21,22 high refractive index, 23,24 antibacterial activity, 25,26 increased conductivity, 27,28 and nonphotobleaching fluorescence 29,30 of nanodiamonds have spurred tireless research efforts on using these materials in products such as heat spreaders, 31,32 photonic crystals, 33,34 medical applications, 35 electronics and sensors, 36,37 and biosensors. 38,39 However, the influence of the water nanolayer adsorbed on the outermost surface prevents dispersion of nanodiamond fillers in hydrophobic polymers; 40 aggregates tend to form due to affinity interactions between the adsorbed water layers.…”

FEM thermal analysis of Cu/diamond/Cu and diamond/SiC heat spreaders

“…14 The performance of Cu/diamond/Cu heat spreader has also been reported. 18 The effect of chromium carbide (Cr 7 C 3 ) coatings on diamond particles for improving the wettability in the case of diamond reinforced copper matrix composite has been investigated. 22,23 The poor adhesion and high stress level for diamond or diamond like carbon on a metallic substrates is found to be dependent on the difference in coefficients of thermal expansion between the film and the substrate.…”

Fabrication and thermal stability of Ni-P coated diamond powder using electroless plating

“…Diamond has attracted tremendous attention in a variety of fields owing to its efficacious characteristics, such as extreme hardness, thermal stability, wear resistance, excellent thermal conductivity (up to 2300 W·m −1 ·K −1 ), and very low coefficient of thermal expansion (about 1×10 −6 K −1 ) [1][2][3][4][5][6][7]. However, the wetting of diamond by other liquid metals is very challenging and leads to a very weak and fragile bond between diamond and other metals.…”