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In this paper, the model of jet dispensing process is developed by decomposing the dispenser into three parts. This model includes all the important system parameters, such as the fluid viscosity, the diameter and length of nozzle and backflow chamber. In this model, the fluid flow is assumed to be steady state flow at each moment. During the whole jetting process, the fluid flow state changes with...
In this paper, the model of jet dispensing process is developed by decomposing the dispenser into three parts. This model includes all the important system parameters, such as the fluid viscosity, the diameter and length of nozzle and backflow chamber. In this model, the fluid flow is assumed to be steady state flow at each moment. During the whole jetting process, the fluid flow state changes with...
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...
Variable displacement speed regulation is a good method for hydraulic propulsion system compared with throttle speed regulation and high speed on/off valve speed regulation, however the minimum variable displacement motor we can get is about 28cc/r, which is too large for a light or medium weight ROV. The variable effective piston stroke (VEPS) motor is a kind of virtual variable displacement (WD)...
In this study, we present a smooth enucleation process on a microfluidic chip. To improve the success rate of enucleation and increasing the potential viability of the enucleated oocyte, a microfluidic system is specially designed. Magnetically driven MicroTool (MMT) control the flow distribution in the microchamber. Designed microchannel with height difference is for the purpose of confining oocyte...
Based on the jet theory of dynamic mechanism, the jet flow of the convergent air contain was studied. According to similarity theory, jet theory, the relevant parameters of the air curtain, and practical experience, a generator of the convergent air curtain was designed. The flow pattern of the convergent air curtain was analyzed, and it was divided into three regions, which were noninterference region,...
It is very important to design the fit clearance between the spool and pocket of a spool valve, because oversize clearance will bring large leakage through the fit clearance and undersize clearance will lead to hydraulic seizure of the spool, especially for a large size spool valve. In order to develop a large size spool valve for a high speed winch, based on computer simulation, this paper analyzed...
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