Wettability of Pyrolytic Boron Nitride by Aluminum

Abstract

The wetting of pyrolytic boron nitride by molten 99.9999% pure aluminum was investigated by using the sessile drop method in a vacuum operating at approximately 660 pPa at temperatures ranging from 700" to 1000°C. The equilibrium contact angle decreased with an increase in temperature. For temperatures at 900°C or less the equilibrium contact angle was greater than 90". At 1000°C a nonwetting-towetting transition occurred and the contact angle stabilized at 49". [

Boron nitride nanosheets as improved and reusable substrates for gold nanoparticles enabled surface enhanced Raman spectroscopy

“…A higher surface diffusion coefficient means a larger migrating rate and hence higher probability to form larger Au particles, and vice versa. 25 It is not surprising that the diffusion coefficient of BN is larger than SiO 2 /Si, 26 but this is the first observation that few-layer and bulk BN have different diffusion coefficients. The difference in diffusion should be caused by different flatness.…”