Manipulation of Self-Assembled Microparticle Chains by Electroosmotic Flow Assisted Electrorotation in an Optoelectronic DeviceReport as inadecuate




Manipulation of Self-Assembled Microparticle Chains by Electroosmotic Flow Assisted Electrorotation in an Optoelectronic Device - Download this document for free, or read online. Document in PDF available to download.

School of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, China





Academic Editors: Wen Jung Li and Ting-Hsuan Chen

Abstract A method incorporating the optically induced electrorotation OER and alternating current electroosmotic ACEO effects, for the formation and motion control of microparticle chains, is numerically and experimentally demonstrated. In this method, both the rotating electric field and ACEO fluid roll are generated around the border between light and dark area of the fluidic chamber in an optoelectronic tweezers OET device. The experimental results show that the particle chains can self-rotate in their pitch axes under the rotating electric field produced due to the different impedances of the photoconductive layer in light and dark areas, and have a peak self-rotating rate at around 1 MHz. The orbital movement of entire particle chain around the center of ACEO fluid roll can be achieved from 0.5 to 600 kHz. The strength of OER motion and ACEO-caused orbital movement of particle chains can be adjusted by changing the frequency of alternating current AC voltage. This non-contact method has the potential for spatially regulating the posture, orientation and position of microparticle chains. View Full-Text

Keywords: electroosmotic flow; optically induced electrorotation; particle chains; optoelectronic tweezers electroosmotic flow; optically induced electrorotation; particle chains; optoelectronic tweezers





Author: Xiaolu Zhu

Source: http://mdpi.com/



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