Journal
MICROMACHINES
Volume 13, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/mi13030351
Keywords
magnetic polymer films; microelectromechanical systems-MEMS; design and fabrication; polymer selection
Categories
Funding
- UEFISCDI within the framework of the project Capitalization of magnetic nanoparticles in the development of a micro-magnetic device [522PED/2018]
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Microelectromechanical systems (MEMS) have wide applications in various fields such as high tech, energy, medicine, and environment. Magnetic polymer films are extensively used in the development of microvalves and micropumps, which are critical components of MEMS. Based on literature survey, various polymers and magnetic micro and nanopowders have been identified, and their performances can be adjusted from simple valves and pumps to biomimetic devices depending on their nature, ratio, processing route, and device design.
Microelectromechanical systems (MEMS) have been increasingly used worldwide in a wide range of applications, including high tech, energy, medicine or environmental applications. Magnetic polymer composite films have been used extensively in the development of the micropumps and valves, which are critical components of the microelectromechanical systems. Based on the literature survey, several polymers and magnetic micro and nanopowders can be identified and, depending on their nature, ratio, processing route and the design of the device, their performances can be tuned from simple valves and pumps to biomimetic devices, such as, for instance, hearth ventricles. In many such devices, polymer magnetic films are used, the disposal of the magnetic component being either embedded into the polymer or coated on the polymer. One or more actuation zones can be used and the flow rate can be mono-directional or bi-directional depending on the design. In this paper, we review the main advances in the development of these magnetic polymer films and derived MEMS: microvalve, micropump, micromixer, microsensor, drug delivery micro-systems, magnetic labeling and separation microsystems, etc. It is important to mention that these MEMS are continuously improving from the point of view of performances, energy consumption and actuation mechanism and a clear tendency in developing personalized treatment. Due to the improved energy efficiency of special materials, wearable devices are developed and be suitable for medical applications.
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