Disposable Off-Chip Micro-Dispenser for Accurate Droplet Transportation

Parsi, Behzad; Zhang, Lihong; Mašek, Vlastimil

doi:10.1109/jsen.2018.2878484

Cited by 3 publications

(5 citation statements)

References 23 publications

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“…The fully coupled fluid-structure interaction (FSI) COMSOL Multiphysics module is utilized to combine the fluid flow, which is formulated by using an Eulerian description and a spatial frame, with the solid mechanics, which is formulated by using a Lagrangian description and a material frame. 26 Figure 11(a) shows the micropump chamber in the suction mode, while Figure 11(b) exhibits the chamber of micropump in the pump mode. In those figures, the first and second color bars on the right show the velocity and stress, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The fully coupled fluid-structure interaction (FSI) COMSOL Multiphysics module is utilized to combine the fluid flow, which is formulated by using an Eulerian description and a spatial frame, with the solid mechanics, which is formulated by using a Lagrangian description and a material frame. 26 In order to investigate the effect of the double-PZTsheet actuator on the system, the flow rate is calculated by FEM simulations. Figure 12 shows the flow rate of the micropump.…”

Section: Resultsmentioning

confidence: 99%

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Design and optimization of piezoelectric actuators for microflap-embedded micropumps

Parsi

Abouzarkhanifard

Zhang

2023

Advances in Mechanical Engineering

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In this paper, we propose a new method to use cost-effective multi-sheet off-the-shelf piezoelectric material (e.g. PZT) as an actuator for micropumps. Instead of one customized single PZT sheet that is typically expensive, multiple commercially available PZT sheets are utilized to decrease the cost of fabrication. For this purpose, we have derived analytic equations for expressing the natural frequency and mode shape of the actuator. The FEM simulations are utilized to verify the analytic equations. Thanks to their high accuracy, we can utilize the derived analytic equations as fitness functions of genetic algorithm (GA) for the optimization purpose of PZT physical aspects. Our experimental measurement results show that the GA is capable of optimizing multiple physical parameters of the piezoelectric actuator. Moreover, one-way compliant microflaps are presented for the first time to act as one-way valves for a PZT micropump aided by our proposed multi-sheet PZT actuator. The flow rate of this configuration is compared with a single-sheet PZT actuator in order to demonstrate the effect of the optimized PZT actuators in the practical applications of micropumps.

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Section: Resultsmentioning

confidence: 99%

“…The fully coupled fluid-structure interaction (FSI) COMSOL Multiphysics module is utilized to combine the fluid flow, which is formulated by using an Eulerian description and a spatial frame, with the solid mechanics, which is formulated by using a Lagrangian description and a material frame. 26 In order to investigate the effect of the double-PZTsheet actuator on the system, the flow rate is calculated by FEM simulations. Figure 12 shows the flow rate of the micropump.…”

Section: Resultsmentioning

confidence: 99%

Design and optimization of piezoelectric actuators for microflap-embedded micropumps

Parsi

Abouzarkhanifard

Zhang

2023

Advances in Mechanical Engineering

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“…Termos tersebut menjaga temperatur air tetap dalam kondisi panas dengan menggunakan prinsip adiabatis, sehingga kalor yang dihasilkan tidak akan berpindah ke ruang hampa udara sebagai isolatornya. Dewasa ini, perkembangan teknologi sangatlah pesat [1]. Terdapat banyak piranti yang berada disekitar bekerja baik secara semi-otomatis ataupun otomatis mulai dari yang sederhana hingga yang kompleks.…”

Section: Pendahuluanunclassified

“…Penelitian terdahulu yang membahas tentang pemodelan kendali fuzzy dijelaskan sebagai berikut: Pertama, penelitian yang membahas mengenai kontrol elektronik untuk otomotif berbasis mikrokontroler yang bertujuan memberikan kemudahan dalam otomatisasi instrumentasi yang dapat dikembangkan dalam skala industri [1], [2]. Kedua, penelitian ini membahas mengenai kendali pada dispenser dengan switch otomatis dan memberikan keleluasaan sistem belajar dengan sendirinya [3][5], sedangkan penelitian [4] mengendalikan dispenser secara otomatis dengan rangkaian sirkuit elektronik namun belum terdapat kecerdasan buatan untuk memodelkan kendali temperaturnya.…”

Section: Pendahuluanunclassified

Pemodelan Fuzzy Mamdani Inference System untuk kendali temperatur pada Dispenser Air

Wicaksono¹

2023

JKKI

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Makalah ini membahas pemodelan sistem kendali fuzzy yang diterapkan pada dispenser menggunakan simulasi piranti lunak Matlab. Dispenser dilengkapi dengan sensor dan pengendali temperatur yang dikenal sebagai thermostat dan dua buah lampu indikator untuk warna merah sebagai penanda dalam proses pemanasan keadaan standby ditandai dengan warna hijau. Secara keadaan semula, dispenser saat ini belum dapat membedakan kapan heater dapat dikendalikan dengan beberapa kondisi kebutuhan tertentu. Sehingga diperlukan sebuah mekanisme agar dispenser dapat membedakan diantara kondisi tiga keadaan dimana error, delta error dan control action agar sesuai dengan keluaran dari temperatur air yang dibutuhkan. Untuk mengatasi hal tersebut dibutuhkan sebuah pemodelan yang dapat menjelaskan bagaimana pengendali termostat tersebut dapat melakukan control action yang terdiri dari tiga buah kondisi. Salah satu piranti yang digunakan untuk memodelkan plant tersebut menggunakan Matlab simulink agar didapatkan control action yang sesuai dan bisa digunakan untuk merancang sistem kendali berikutnya yang lebih praktis dan ramah lingkungan. Hasil penelitian ini menunjukkan bahwa rule base yang telah dirancang, dapat diterapkan pada pemodelan simulasi dengan keadaan termostat yang sesuai untuk menentukan control action yang sesuai. Input signal step dapat digunakan pada plant ini dan didapatkan scope pada bagian output berupa grafik kontrol yang sesuai dengan nilai target.

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“…Each of these components has a different role in the control process and thus affects the performance of the whole system. In [11], Parsi et al, proposed a FLC to accurately control temperature in a cost-effective disposable off-chip micro-dispenser. A Peltier thermoelectric device supported by the FLC can warm up or cool down liquid for droplet transportation in the μL range, along with an electromagnetic actuator.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of cost-effective coldproof portable enclosures for polar environment

Parsi

Zhang

2020

IJECE

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Based on the International Electrotechnical Commission standards, the electronic devices in the industrial class (e.g., integrated circuits or batteries) can only operate at the ambient temperature between -40°C and 85°C. For the human-involved regions in Alaska, Northern Canada, and Antarctica, extreme cold condition as low as -55°C might affect sensing electronic devices utilized in the scientific or industrial applications. In this paper, we propose a design and optimization methodology for the self-heating portable enclosures, which can warm up the inner space from -55°C for encasing the low-cost industrial-class electronic devices instead of expensive military-class ones to work reliably within their allowed operating temperature limit. Among the other options, ceramic thermal resistors are selected as the heating elements inside the enclosure. The placement of the thermal resistors is studied with the aid of thermal modelling for the single heating device by using the curve fitting technique to achieve uniform temperature distribution within the enclosure. To maintain the inner temperature above -40°C but with the least power consumption from the thermal resistors, we have developed a control system based on the fuzzy logic controller. For validation, we have utilized COMSOL Multiphysics software and then one prototyped enclosure along with the fuzzy control system. Our experimental measurement exhibits its efficacy compared to the other design options.

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Disposable Off-Chip Micro-Dispenser for Accurate Droplet Transportation

Cited by 3 publications

References 23 publications

Design and optimization of piezoelectric actuators for microflap-embedded micropumps

Design and optimization of piezoelectric actuators for microflap-embedded micropumps

Pemodelan Fuzzy Mamdani Inference System untuk kendali temperatur pada Dispenser Air

Design and optimization of cost-effective coldproof portable enclosures for polar environment

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