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Electron microscopy of bismuth building blocks for self-assembled nanowires
K.J. Stevens,K.S. Cheong,D.M. Knowles,N.J. Laycock,A. Ayesh,J. Partridge,S.A. Brown,S.C. Hendy 한국물리학회 2006 Current Applied Physics Vol.6 No.3
Nanowires can be fabricated from bismuth nanoclusters. The structure of bismuth nanoclusters of 4060 nm diameter has beenobserved by high resolution transmission electron microscopy (HRTEM) and matched to multislice image simulations forB=[. 2,0, . 1] andB= [1,0,. 1,0]. The hexagonal structure matches that of bulk bismuth embedded in a 5 nm thick shell ofb-Bi2O3.
Atomic-scale flattening of Ni-Cr alloy surfaces by electrochemical passivation treatments
H. Nanjo,N. J. Laycock,H. Deng,I. Ishikawa,N. Sanada 한국물리학회 2004 Current Applied Physics Vol.4 No.2-4
Ni–Cr alloys were electrochemically passivated in sulphuric acid solutions, generating atomically flat oxide surfaces on the terraces of the resulting passive films. High resolution ex-situ scanning tunnelling microscopy revealed a nanocrystalline structure for the passive film, with a tendency for the grain size to decrease with increasing Cr content in the alloy.
Nanoscale surface properties of iron treated by electrochemical and physico-chemical methods
H. Nanjo,M. Fujimura,N.J. Laycock,Z. Xia,M. Nishioka,I. Ishikawa,J. Onagawa 한국물리학회 2006 Current Applied Physics Vol.6 No.3
The nanoscale surface structure of surface oxide lms formed on pure iron treated by UV irradiation at 3 mW/cm2 and electrochem-microscopy and spectroscopic ellipsometry. UV irradiation of the air-formed lm decreased the lm thickness, surface roughness andsurface area. UV irradiation of electrochemically passivated surfaces increased the lm thickness and the terrace width of the oxide film.