Chia-Ming Wu

Learn More
Mesoporous titanium dioxide materials were prepared using a nanocasting technique involving silica SBA-15 as the hard-template. At an optimal loading of titanium precursor, the hexagonal periodic array of pores in SBA-15 was retained. The phases of titanium dioxide could be easily varied by the number of impregnation cycles and the nature of titanium(More)
ZigBee networks based on the IEEE 802.15.4 standard are designed for wireless sensor and control networks with low-cost, low-power consumption, and low-data rate. To join in a ZigBee network with the tree topology, the hardware requirement of a device is simple and low threshold. However, a device may become an isolated node due to constraints of(More)