2011
DOI: 10.4236/ns.2011.32022
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Thermal dependence of the properties of cubic boron nitride crystal

Abstract: Lattice constant, total energy, cohesive energy, bulk modulus, speed of sound (υ), plasmon energy (E pl ), valence charge distribution and energy bands of cubic boron nitride crystal have been calculated and studied as a function of temperature using self-consistent field tight binding method with complete neglect of differential overlap version 2 using 8-atom large unit cell approach. Our results illustrate that the increase of temperature leads to an increase of lattice constant, cohesive energy, and valence… Show more

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“…As a binder material, the PMMA solution dissolved by a solvent (2-Butoxyethyl acetate) was spin-coated at 4000 rpm for 20 s. and baked on a hot plate at 80 °C for 20 min Since heat is radiated from the surface of the PMMA binder, the PMMA thickness is desired to be about 1 μm ∼ 10 μm. Of those thermal conductive fillers such as aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ), boron nitride (BN), aluminum nitride (AlN) [13], silicon carbide (SiC), graphites, and carbon nanotubes (CNTs) [14], we have used cubic BN since it exhibits very high thermal conductivity [15]. We mixed c-BN with the PMMA binder.…”
Section: Effect Of Polymer Composite Filmsmentioning
confidence: 99%
“…As a binder material, the PMMA solution dissolved by a solvent (2-Butoxyethyl acetate) was spin-coated at 4000 rpm for 20 s. and baked on a hot plate at 80 °C for 20 min Since heat is radiated from the surface of the PMMA binder, the PMMA thickness is desired to be about 1 μm ∼ 10 μm. Of those thermal conductive fillers such as aluminum oxide (Al 2 O 3 ), silicon dioxide (SiO 2 ), boron nitride (BN), aluminum nitride (AlN) [13], silicon carbide (SiC), graphites, and carbon nanotubes (CNTs) [14], we have used cubic BN since it exhibits very high thermal conductivity [15]. We mixed c-BN with the PMMA binder.…”
Section: Effect Of Polymer Composite Filmsmentioning
confidence: 99%