3-D Design and Simulation of a Piezoelectric Micropump

Yazdi, Seyed Amir Fouad Farshchi; Corigliano, Alberto; Ardito, Raffaele

doi:10.3390/mi10040259

Cited by 28 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another recent study analyzed the theoretical performance of a piezoelectric micropump for drug delivery applications ( Farshchi Yazdi et al, 2019 ). The proposed micropump is based on silicon diaphragms actuated at 60 V and on flow input and output passive valves.…”

Section: Implantable Mems Drug Delivery Devicesmentioning

confidence: 99%

Recent Advances in Micro-Electro-Mechanical Devices for Controlled Drug Release Applications

Mendoza

Scilletta

Bellino

et al. 2020

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

In recent years, controlled release of drugs has posed numerous challenges with the aim of optimizing parameters such as the release of the suitable quantity of drugs in the right site at the right time with the least invasiveness and the greatest possible automation. Some of the factors that challenge conventional drug release include longterm treatments, narrow therapeutic windows, complex dosing schedules, combined therapies, individual dosing regimens, and labile active substance administration. In this sense, the emergence of micro-devices that combine mechanical and electrical components, so called micro-electro-mechanical systems (MEMS) can offer solutions to these drawbacks. These devices can be fabricated using biocompatible materials, with great uniformity and reproducibility, similar to integrated circuits. They can be aseptically manufactured and hermetically sealed, while having mobile components that enable physical or analytical functions together with electrical components. In this review we present recent advances in the generation of MEMS drug delivery devices, in which various micro and nanometric structures such as contacts, connections, channels, reservoirs, pumps, valves, needles, and/or membranes can be included in their design and manufacture. Implantable single and multiple reservoir-based and transdermalbased MEMS devices are discussed in terms of fundamental mechanisms, fabrication, performance, and drug release applications.

show abstract

Section: Implantable Mems Drug Delivery Devicesmentioning

confidence: 99%

Recent Advances in Micro-Electro-Mechanical Devices for Controlled Drug Release Applications

Mendoza

Scilletta

Bellino

et al. 2020

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…Generally, piezoelectric micro-pumps are divided into two categories: with and without valves. Valve-less piezoelectric micropumps were studied experimentally and numerically [ 12 , 13 , 14 ]. The piezoelectric micro-pumps equipped with valves consist of a pumping chamber with a diaphragm (pumping membrane), a microchannel and two check valves [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling of a Passive-Valve Piezoelectric Micro-Pump: A Parametric Study

2020

View full text Add to dashboard Cite

Piezoelectric micro-pumps offer many applications and could provide considerable flow rates in miniature systems. This study parametrically investigates the effects of major parameters, namely the length, width and attack angle of valves, piezoelectric length, and applied voltage. The results show that these parameters significantly affect the performance of the designed micro-pump. Even though increasing the piezoelectric length and operating voltage raise the flow rate, the modification of valve dimensions is more efficient since these parameters do not rely on any external power. According to the obtained results, as the length of the working valves increases, the provided flow rate becomes larger. There is an optimum condition for the width and attack angle of the valves. This optimum width is not dependent on the flow rate. With the use of the attack angle and the length of the valves as design parameters, the studied design shows promising results.

show abstract

“…The application of piezoelectric materials in "smart" microsystems [1] is continuously increasing, with different possible uses of both "direct" (conversion of mechanical energy into electric energy) and "converse" effect [2]. The latter is applied for actuating purposes, for example, in the case of micropumps [3][4][5]; "converse" effect is now widely used for energy harvesting, namely for obtaining an electric power by exploiting some freely available mechanical energy [6,7].…”

Section: Introductionmentioning

confidence: 99%

On the Effects of Package on the PMUTs Performances—Multiphysics Model and Frequency Analyses

et al. 2020

Self Cite

View full text Add to dashboard Cite

This paper deals with a multiphysics numerical modelling via finite element method (FEM) of an air-coupled array piezoelectric micromachined ultrasonic transducers (PMUTs). The proposed numerical model is fully 3D with the following features: the presence of the fabrication induced residual stresses, which determine a geometrically non-linear initial deformed configuration of the diaphragms and a remarkable shift of the fundamental frequency; the multiple coupling between different physics, namely electro-mechanical-coupling for the piezo-electric model, acoustic-structure interaction at the acoustic-structure interface and pressure acoustics in the surrounding air. The model takes into account the complete set of PMUTs belonging to the silicon die in a 4 × 4 array configuration and the protective package, as well. The results have been validated by experimental data, in terms of initial static pre-deflected configuration of the diaphragms and frequency response function of the PMUT. The numerical procedure was applied, to analyze different package configurations of the device, to study the influence of the holes on the acoustic transmission in terms of SPL and propagation pattern and consequently extract a set of design guidelines.

show abstract

3-D Design and Simulation of a Piezoelectric Micropump

Cited by 28 publications

References 28 publications

Recent Advances in Micro-Electro-Mechanical Devices for Controlled Drug Release Applications

Recent Advances in Micro-Electro-Mechanical Devices for Controlled Drug Release Applications

Modeling of a Passive-Valve Piezoelectric Micro-Pump: A Parametric Study

On the Effects of Package on the PMUTs Performances—Multiphysics Model and Frequency Analyses

Contact Info

Product

Resources

About