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- W4281738537 abstract "This article presents the electrothermal analysis of hexagonal boron nitride (hBN) grown by chemical vapor deposition (CVD) as a two-dimensional insulator heat spreader. The thickness and indirect bandgap of hBN are 11.5 ± 0.8 nm and 5.85 ± 0.04 eV, respectively. The fabricated Pt/Cu/Ti (30/500/20 nm) micro-coil served as a heat source and as a sensitive resistance thermometer, with a temperature coefficient of resistance higher than 0.0066 K−1. For the bare structure, the default heat spreader is SiO2 with lateral thermal resistance, ΘSiO2 of around 5.0–5.2 KW−1. It provides cooling of the coil up to −0.4 KW−1. The deposition of CVD-grown hBN and the reference graphene oxide (GO) on the coils modified the thermal resistance network of the devices. The ΘSiO2 || ΘhBN is 3.520 KW−1 with coil cooling of −1.694 KW−1, while the ΘSiO2 || ΘGO is 3.765 KW−1 with coil cooling of −1.556 KW−1. Compared with the bare device, the hBN provides 4.78 times the normalized hotspot cooling, while GO provides 4.01 times that of the bare device. Multilayer hBN is suitable for a direct-contact heat spreader, since it improves heat spreading from the hotspot without short-circuiting the coil." @default.
- W4281738537 created "2022-06-13" @default.
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- W4281738537 date "2022-05-31" @default.
- W4281738537 modified "2023-09-27" @default.
- W4281738537 title "Electrothermal Analysis of CVD-Grown hBN Heat Spreader using Pt/Cu/Ti Micro-Coil" @default.
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- W4281738537 doi "https://doi.org/10.1007/s11664-022-09715-3" @default.
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