Abstract
This paper reviews recent investigations and achievements in the design of controllable functional components for improving microfluidic systems, its effectiveness, and functionality. The main purpose was to design novel microstructures with piezoelectric properties (microresonators), which enable one to control the effectiveness of fluid flow in micro-hydro-mechanical devices for biomedical/biochemical purposes. Controllable properties were obtained by incorporating different types of binders in a piezoelectric ceramic matrix (lead zirconate titanate): polyvinyl butyral (PVB), poly methyl methacrylate (PMMA), and polystyrene (PS). The change in chemical composition of PZT helps to manipulate the piezoelectric characteristics, surface morphology, mechanical properties, etc., of the designed microfluidic element with the microstructure in it.
Highlights
In the past two decades, microfluidic systems have been in high demand among researchers and industries
The results showed that the resistance of the piezoelectric coating was highly dependent on the type of binder
A rather simple approach was found for an effective design to optimize the surface, chemical, and electrical properties the microresonator
Summary
In the past two decades, microfluidic systems have been in high demand among researchers and industries. It is one of the promising future technologies for handling a small volume of fluids in microchannels for chemical, medical and biological applications in various fields. Designing effective microfluidic systems enables decreasing the analysis time, reducing the sample dose, increasing throughput ability, making it portable, and extending its integration in different fields. Despite the huge selection of microfluidic systems [10], some main drawbacks are still unsolved or they are not as effective as they should be: the ability to unlimit the manipulation of small liquid plugs in microchannels, to increase the flow of high viscosity fluids, and even to reduce air bubbles between two plugs. This research paper covers the design of novel piezoelectric microstructures employed as microresonators, which could ensure more effective flow of microfluids when the system is excited by vibrations
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