J. B. Yang

Learn More
We report the synthesis of MnO 2−δ microspheres using hydrothermal and conventional chemical reaction methods. The microspheres of MnO 2−δ consist of nanowires having a diameter of 20-50 nm and a length of 2-8 µ m. The value of the oxygen vacancy δ estimated from the x-ray photoelectron spectrum (XPS) is 0.3. The magnetization versus temperature curve(More)
Vast experiments have demonstrated that the external specimen size makes a large difference in the deformation behavior of crystalline materials. However, as one important kind of internal planar defects, the role of grain boundary (GB) in small scales needs to be clarified in light of the scarce and inconsistent experimental results at present. Through(More)
Photoluminescence microscopy of as-grown individual single-walled carbon nanotubes on Si/SiO 2 substrates, phys. separation studies of single walled carbon nanotube dispersions, phys. stat. sol. The mechanism of cavitation-induced scission of single-walled carbon nanotubes, Photoluminescence microscopy of carbon nanotubes grown by chemical vapor deposition:(More)
  • 1