A hetero-epitaxial-double-atomic-layer system of monolayer graphene/monolayer h-BN on Ni(111)

Self-Standing Graphene Sheets Prepared with Chemical Vapor Deposition and Chemical Etching

“…Another one was vibrational frequency change of phonons; the interfacial interaction reduces transverse optical (TO) frequencies of the first-layer by 20 % from the bulk ones on Ni(111), while the additional graphene coverage returned the TO phonon frequencies to the bulk ones. All the three data described above indicated that the additional layer on the first layer weakens the interfacial interaction (Oshima et al, 2000). The phenomenon of the third-layer growth observed by LEEM is consistent with the above data.…”

“…In previous papers, we reported the weakening of the interfacial interaction with the metal substrate by the second-layer covering the first-layer through CVD technique. For example, double-layer graphene on TaC(111) and hetero-epitaxial system (monolayer graphene/monolayer h-BN) on Ni(111) (Kawasaki et al, 2002;Nagashima et al, 1994;Oshima et al, 2000). Fig.…”

Self-Standing Graphene Sheets Prepared with Chemical Vapor Deposition and Chemical Etching

“…In order to increase the thickness of the graphene sheet such as bi-atomic layers, tri-atomic layers, etc. one has to change the temperature and/or substrates, for instance, changes of crystal orientations and the materials [20,21]. The deposited carbon layer interrupts the dissociation of benzene molecules by Ni metals, which is well known as the poisoning phenomena of carbon in catalytic reactions.…”

Diamagnetism of Graphene with Gap in Nonuniform Magnetic Field

“…13) Quite recently, the quality of graphene was considerably improved by being suspended above substrates [14][15][16][17][18] or transferred onto a boron nitride substrate. 19,20) Further, epitaxial graphenes grown on SiC [21][22][23][24][25] or other substrates [26][27][28][29][30] are now being intensively pursued for device applications and are subjected to various theoretical studies. 31,32) When graphene is placed on a certain substrate material, potential difference appears between two sublattice points, giving rise to band-gap opening.…”