Micropumping valveless

Figure 1.46 Valveless micropumping mixer with two mixing chambers.

Mixer type Valveless micropumping micro mixer Diaphragm length, width, thickness 6 mm, 6 mm, 0.15 mm... 

Yang, Z., Goto, H., Matsumoto, M., Yada, T., Micro mixer incorporated with piezoelectrically driven valveless micropump, in Harrison, J., van den Berg,... 

Yamahata C, Lotto C, Al-Assaf E, Gijs MAM (2005) A PMMA valveless micropump using electromagnetic actuatirai. Microlluid Nanolluid 1 197-207... 

In Chapter 9, we move on to discuss a few device and robotic applications of EAP materials, by drawing heavily on the advances in material development and modeling that are discussed in prior chapters. These application examples include a robotic fish propelled by an IPMC tail, an IPMC energy harvester, an IPMC-based valveless pump, a conjugated polymer petal-driven micropump, and a synthetic elastomer actuator-enabled robotic finger. Most discussions of these examples are supported with extensive experimental results. 

In this chapter, we extend and apply the results on EAP materials and models to a few device and robotic applications. A robotic fish propelled by an IPMC caudal fin is first considered in Section 9.1. The use of IPMC for low-frequency energy harvesters is studied in Section 9.2. The design of an IPMC-enabled valveless pump is discussed in Section 9.3. We then present a novel micropump actuated by conjugated polymer petals, supported by both analytical and experimental results. Finally, in Section 9.5 we investigate the design, prototyping, and control of a robotic finger powered by dielectric elastomer actuators. 

At Chalmers University in Stockholm, the nozzles were etched laterally into the sihcon. A maximum hydrostatic counter pressure of 25kPa (for a pmnp with larger external dimensions) was measured following an optimization of the flare angle [322]. The pumps are suitable for direct feed of fluids and gases. Care is to be taken when shutting off valveless micropumps because the transported medium will flow back in the presence of a hydrostatic counter pressure. 

Su GG, Pidaparti RM (2010) Drug particle delivery investigation through a valveless micropump. J Microelectromech Syst 19 1390-1399... 

Yamahata C, Lacharme F, Gijs MAM (2005) Glass valveless micropump using electromagnetic actuation. Microelectron Eng 78-79, 132-137... 

Fan et al. (2005) Simulation of piezoelectrically actuated valveless micropump, J. Smart Materials and Struct, 14, 400-405. 

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