高等学校化学研究 ›› 2010, Vol. 26 ›› Issue (4): 645-648.
CHEN Hui-ying1* , ZHU Yue-lin1, LIU Yan2, ZHANG He-teng2, YU Le2 and LI Di1
CHEN Hui-ying1* , ZHU Yue-lin1, LIU Yan2, ZHANG He-teng2, YU Le2 and LI Di1
摘要: With the development of nanotechnology, the separation and manipulation of micro-nano-particles have become a research focus in the field of nano-materials. Dielectrophoresis(DEP) is a non-contact technology for the separation and manipulation of micro-nano-particles. Here is reported the design and fabrication of a DEP based microchip with microelectrode arrays for capturing micro-particles of inorganic oxides in petroleum. The DEP behavior of micro-particles of inorganic oxides in oil media was explored via this microchip. The microchip shows relatively a good DEP response to inorganic oxides in oil media. Furthermore, much more factors were explored such as frequency(Hz), and particle size(μm), as well as metal valence. As a conclusion, the best frequency is 50 Hz. It is expected to capture particles with different sizes or separate different oxide particles by regulating DEP conditions. Thus, a new method could be established for the separation and purification particles of different oxides, as well as the separation and manipulation of an oxide with different particle sizes.