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Working with RF has been a passion of mine ever since I learned how to grab a soldering iron by the right (EM) has held my attention for the last two decades. Gradually, as I started playing with Maxwell's equations back in the “good old days,” I began wondering about this Maxwell fellow (Figure 1). Historians acknowledge him to be the most important physicist of the 19th century, the equal of Einstein...
Micromanipulation provides researchers a new way to fabricate complex structures through assembling small components, and it is also a useful tool for single cell manipulation. Many micromanipulation methods have been proposed, but only the few are capable of rotation of the micro targets. In this paper, we present a simple non-contact high-speed rotation method based on the local flow generated by...
Atomic force microscopy (AFM) is a powerful instrument for researching biological phenomenon at the nanoscale. A fluid cell can be used to hold the bacteria and fluid. As many biological processes occur in fluid environments, need to be kept hydrated for proper analysis, yet commercially produced fluid cells involve complex set up procedures and are expensive. As an integral part of a Research Experience...
Within the low frequency (tens of hertz) domain the collection of particles located at the air-fluid interface has been previously demonstrated. Our work shows that such manipulation is also viable using ultrasonic actuation. In standing wave ultrasonic devices suspended particles are collected at the pressure nodes due to acoustic radiation forces. However, in more complex fields, our modeling data...
Optically actuated bubbles in oil were used as microrobots. Simulations of the thermocapillary fluid flow within the oil phase are used to illustrate the mechanisms driving the bubble actuation. Parallel manipulation of sub-millimeter objects including glass beads and hydrogel beads was demonstrated. These capabilities show the potential for using the bubble microrobots in biomedical or other microassembly...
We propose a new Bio-manipulation method which is based on micro hydrodynamics. Compare with other present bio-manipulation methods, our system which do not directly contact with cell is no-harmful and soft manipulation. The system implements its function by controlling a small a amount of volume of liquid stream. For manufacture the prototype to confirm the basic principle of our idea, we design...
An experimental investigation was conducted to develop an electrohydrodynamic (EHD) pump based on a microelectromechanical system (MEMS) technology. To develop an EHD micropump with enhanced pumping performance, including not only long-term driving but high-pressure generation, two electrode plates were prepared. On one, the electrode pattern was designed as a series of planar comb fingers. The electrodes...
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