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We discuss in this paper a novel observation of self-induced rotational motion of pigmented biological cells in a dielectrophoretic force field. The experimental platform for our work is basically a microfluidic system fabricated with Au microelectrode on the glass substrate with PDMS microchannel irreversibly bonded on top of it. To investigate the cell movement in this microfluidic system due to...
Unit formation planning and target of attack is the core of micro management in real time strategy (RTS) game. It is more complicated than macro management, such as building and unit production sequence. It consists of a great quantity of possibility. Multiple targets and the non-additive property of unit formation leads the micro-management remains a problem. Traditional tree searching or A∗ searching...
This paper describes a process to perform nanoscale welding of multi-walled carbon nanotubes (MWCNTs) using a conductive atomic force microscopy (AFM) tip. An AFM tip can be used not only to apply a mechanical force to push, drag or scratch a sample, but also to exert an electrostatic force between the conductive tip and a sample substrate by applying a bias voltage. This electrostatic field will...
This paper presents a theoretical investigation to evaluate and compare the capabilities of using dielectrophoresis (DEP) and optical image-driven dielectrophoresis (ODEP) forces for micro/nano scale manipulation. A simplified model of particle velocity as a function of electrode size and particle radius was derived based on Stokes' law. Then, electric field analysis of two typical electrode configurations...
This paper describes the assembly of 2 nm gold nanoparticles between micro-fabricated planar electrodes by using dielectrophoresis (DEP). The optimal conditions for effectively dieletrophoretic manipulation have been established through theoretical analysis and experimental validation. In the theoretical analysis, the effect of Brownian motion was taken into consideration, as well as the electrothermal...
This paper describes an investigation into the reduction of vibration and acoustic noise in switched reluctance motor. The vibrations of electric motors are mainly determined by two factors, radial force excitation and structure borne transfer function. The radial force, which is the dominant source of vibration, was analyzed analytically first. Based on the analysis, it was derived that vibration...
We present in this paper a novel indoor blimp that is propelled by a propulsion technology that uses no moving mechanical parts and thus is noiseless and vibration free. In our prior work reported at IEEE/ASME AIM 2007, we demonstrated several prototype propulsive units (with asymmetric capacitor configurations) that lift themselves into air. Using these basic propulsive units (“Ionic Flyers”), we...
There currently exists a sizeable gap between the qualifications of university graduates and social want. From the perspective that engineering quality constitutes a prerequisite of application-oriented graduates, the concepts of engineering quality, technique, and application-oriented requirements will be discussed in this paper, as well as the relationship between application-oriented education...
A new wall climbing robot suction method called ldquoNPT methodrdquo has been primarily proposed by our lab, it is based on compositive effect of negative pressure force and thrust. This paper presents the suction principle in detail, then the key parameters are given and a model of the robot is designed. Using computational fluid dynamics simulation, key parameters are analyzed. Finally the attraction-gap-motor...
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