Experimental observation of cubic boron nitride (cBN) growth on most substrates showed that cBN nucleated and grew on turbostratic boron nitride (tBN) layers. TEM study of BN films deposited by both PVD and CVD methods revealed three major types of tBN environments in the tBN layer wtBN with its (0002) planes parallel to the growth direction (I), perpendicular to the growth direction (II) and w...

In situ ellipsometry growth characterization of dual ion beam deposited boron nitride thin films" (2000). Faculty Publications from the Department of Electrical and Computer Engineering. 19. Pure hexagonal h, as well as mixed-phase cubic/hexagonal c/h boron nitride ͑BN͒ thin films were deposited onto ͓001͔ silicon substrates using the dual ion beam deposition technique. The BN thin films were grown...

we study the coherent spin-polarized transport through a zigzag-edge graphene flake (zgf), using hubbard model in the nearest neighbor approximation within the framework of the green function’s technique and landauer formalism. the system considered consists of electrode/ (zgf)/electrode, in which the electrodes are chosen to be armchair nanoribbons. the study was performed for two types of ele...

sp(2)-Bonded boron nitride aerogels are synthesized from graphene aerogels via carbothermal reduction of boron oxide and simultaneous nitridation. The color and chemical composition of the original gel change dramatically, while structural features down to the nanometer scale are maintained, suggesting a direct conversion of the carbon lattice to boron nitride. Scanning and transmission electro...

We study hydrogen chemisorption at full coverage and low concentrations on hexagonal boron nitride (h-BN). Chemisorption trends reveal the complex nature of hydrogenation. Barriers for diffusion are found to be significantly altered by the presence of additional H atoms. Moreover, the presence of a Stone-Wales defect may dramatically enhance the bond strength of H to the h-BN surface. These fin...

A simple method is presented for exfoliating and suspending hexagonal boron nitride using a co-solvent approach. A 60 w/w% concentration of tert-butanol in water is very effective at exfoliating boron nitride especially when compared to the individual components alone as indicated by UV-vis and transmission electron microscopy. Molecular weight and surface tension are found to play inverse role...