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GaN material and related LED devices always suffered from the serious strains induced by the heteroepitaxy of III-N semiconductor on the most popular sapphire substrate. GaN material and related LED devices were grown by MOVPE on CPSS. The intrinsic property of dislocations in GaN on CPSS was examined by cross sectional TEM images. The stress ranging from 0.15GPa to 0.40GPa is obtained for GaN epilayer on CPSS,whi...

The dendrites in every direction grow with the same rate and the dendrite“self-poisoning”is relieved via electric current. They firstly observe dendrite growth behavior of metal alloy with regulation of electromagnetic field via in situ visualization and reveal the internal mechanism of dendrite branches and grain refinement suppressed and promoted by electric field,respectively. ”The research provides the dire...

Magnetic materials with high coercivity(Hc),perpendicular magnetic anisotropy(PMA)and magnetic energy product have great application potential in ultrahigh-density perpendicular magnetic recording media(~10Tb/inch2),high-performance permanent magnets and ferromagnetic electrodes of spintronic devices with high magnetic-noise immunity and thermal stability. These room-temperature magnetic characteristics make these...

VO2 exhibits a well know metal-insulator transition(MIT)at 341K from a low temperature insulating phase to a high temperature metallic phase,accompanied by a structural transition from a monoclinic lattice to a rutile lattice. Due to the simple lattice structure and the amazing nature,VO2 is an ideal template for study on strong electronic interaction system. They obtained detail information of local structure aro...

It is very important to find an effective method of enhancing the solubility of Mn and suppressing the formation of VO in Mn-doped ZnO. X-ray absorption fine structure(XAFS)is very sensitive to the local environment of a selected atom. The result of Zn k-edge X-ray absorption near edge structure(XANES)reveals that the VO density deceases with increasing treatment octylamine content. The variation of Mn k-edge XAFS...

Microelectronic circuits/arrays produced via high-speed printing instead of traditional photolithographic processes offer an appealing approach to creating the long-sought after,low-cost,large-area flexible electronics. Figure 1.Chemical structures of the polymer Tapping-mode atomic force microscopy(AFM)of a thin film of high-molecular weight sample(Mn/Mw=110000/501,000)of the polymer showed large fibrous crystall...
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