1
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Shen S, Liu X, Fan K, Bai H, Li X, Li H. Stabilizing and Accelerating Secondary Flow in Ultralong Spiral Channel for High-Throughput Cell Manipulation. Anal Chem 2024. [PMID: 38954777 DOI: 10.1021/acs.analchem.4c01549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Efficient cell manipulation is essential for numerous applications in bioanalysis and medical diagnosis. However, the lack of stability and strength in the secondary flow, coupled with the narrow range of practical throughput, severely restricts the diverse applications. Herein, we present an innovative inertial microfluidic device that employs a spiral channel for high-throughput cell manipulation. Our investigation demonstrates that the regulation of Dean-like secondary flow in the microchannel can be achieved through geometric confinement. Introducing ordered microstructures into the ultralong spiral channel (>90 cm) stabilizes and accelerates the secondary flow among different loops. Consequently, effective manipulation of blood cells within a wide cell throughput range (1.73 × 108 to 1.16 × 109 cells/min) and cancer cells across a broad throughput range (0.5 × 106 to 5 × 107 cells/min) can be achieved. In comparison to previously reported technologies, our engineering approach of stabilizing and accelerating secondary flow offers specific performance for cell manipulation under a wide range of high-throughput manner. This engineered spiral channel would be promising in biomedical analysis, especially when cells need to be focused efficiently on large-volume liquid samples.
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Affiliation(s)
- Shaofei Shen
- Shanxi Key Lab for Modernization of TCVM, College of Life Science, Shanxi Agricultural University, Taiyuan, Shanxi 030000, P. R. China
| | - Xufang Liu
- Shanxi Key Lab for Modernization of TCVM, College of Life Science, Shanxi Agricultural University, Taiyuan, Shanxi 030000, P. R. China
| | - Kuohai Fan
- Shanxi Key Lab for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Taiyuan, Shanxi 030000, P. R. China
| | - Hanjie Bai
- Shanxi Key Lab for Modernization of TCVM, College of Life Science, Shanxi Agricultural University, Taiyuan, Shanxi 030000, P. R. China
| | - Xiaoping Li
- Department of Breast, Jiangmen Central Hospital, Jiangmen, Guangdong 529000, P. R. China
| | - Hongquan Li
- Shanxi Key Lab for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Taiyuan, Shanxi 030000, P. R. China
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2
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Kato S, Carlson DW, Shen AQ, Guo Y. Twisted fiber microfluidics: a cutting-edge approach to 3D spiral devices. MICROSYSTEMS & NANOENGINEERING 2024; 10:14. [PMID: 38259519 PMCID: PMC10800335 DOI: 10.1038/s41378-023-00642-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/24/2023] [Accepted: 11/14/2023] [Indexed: 01/24/2024]
Abstract
The development of 3D spiral microfluidics has opened new avenues for leveraging inertial focusing to analyze small fluid volumes, thereby advancing research across chemical, physical, and biological disciplines. While traditional straight microchannels rely solely on inertial lift forces, the novel spiral geometry generates Dean drag forces, eliminating the necessity for external fields in fluid manipulation. Nevertheless, fabricating 3D spiral microfluidics remains a labor-intensive and costly endeavor, hindering its widespread adoption. Moreover, conventional lithographic methods primarily yield 2D planar devices, thereby limiting the selection of materials and geometrical configurations. To address these challenges, this work introduces a streamlined fabrication method for 3D spiral microfluidic devices, employing rotational force within a miniaturized thermal drawing process, termed as mini-rTDP. This innovation allows for rapid prototyping of twisted fiber-based microfluidics featuring versatility in material selection and heightened geometric intricacy. To validate the performance of these devices, we combined computational modeling with microtomographic particle image velocimetry (μTPIV) to comprehensively characterize the 3D flow dynamics. Our results corroborate the presence of a steady secondary flow, underscoring the effectiveness of our approach. Our 3D spiral microfluidics platform paves the way for exploring intricate microflow dynamics, with promising applications in areas such as drug delivery, diagnostics, and lab-on-a-chip systems.
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Affiliation(s)
- Shunsuke Kato
- Department of Electrical, Information and Physics Engineering, School of Engineering, Tohoku University, Aoba-ku, Sendai, 980-8579 Miyagi Japan
| | - Daniel W. Carlson
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology, Onna, Kunigami-gun, 904-0495 Okinawa Japan
| | - Amy Q. Shen
- Micro/Bio/Nanofluidics Unit, Okinawa Institute of Science and Technology, Onna, Kunigami-gun, 904-0495 Okinawa Japan
| | - Yuanyuan Guo
- Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Aoba-ku, Sendai, 980-0845 Miyagi Japan
- Graduate School of Biomedical Engineering, Tohoku University, Aoba-ku, Sendai, 980-8579 Miyagi Japan
- Department of Physiology, Graduate School of Medicine, Tohoku University, Aoba-ku, Sendai, 980-8575 Miyagi Japan
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3
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Islam MA, Park SY. Optimizing Optical Dielectrophoretic (ODEP) Performance: Position- and Size-Dependent Droplet Manipulation in an Open-Chamber Oil Medium. MICROMACHINES 2024; 15:119. [PMID: 38258238 PMCID: PMC10818536 DOI: 10.3390/mi15010119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/05/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024]
Abstract
An optimization study is presented to enhance optical dielectrophoretic (ODEP) performance for effective manipulation of an oil-immersed droplet in the floating electrode optoelectronic tweezers (FEOET) device. This study focuses on understanding how the droplet's position and size, relative to light illumination, affect the maximum ODEP force. Numerical simulations identified the characteristic length (Lc) of the electric field as a pivotal factor, representing the location of peak field strength. Utilizing 3D finite element simulations, the ODEP force is calculated through the Maxwell stress tensor by integrating the electric field strength over the droplet's surface and then analyzed as a function of the droplet's position and size normalized to Lc. Our findings reveal that the optimal position is xopt= Lc+ r, (with r being the droplet radius), while the optimal droplet size is ropt = 5Lc, maximizing light-induced field perturbation around the droplet. Experimental validations involving the tracking of droplet dynamics corroborated these findings. Especially, a droplet sized at r = 5Lc demonstrated the greatest optical actuation by performing the longest travel distance of 13.5 mm with its highest moving speed of 6.15 mm/s, when it was initially positioned at x0= Lc+ r = 6Lc from the light's center. These results align well with our simulations, confirming the criticality of both the position (xopt) and size (ropt) for maximizing ODEP force. This study not only provides a deeper understanding of the position- and size-dependent parameters for effective droplet manipulation in FEOET systems, but also advances the development of low-cost, disposable, lab-on-a-chip (LOC) devices for multiplexed biological and biochemical analyses.
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Affiliation(s)
| | - Sung-Yong Park
- Department of Mechanical Engineering, San Diego State University, San Diego, CA 92182-1323, USA
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4
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Xu Z, Chen Z, Yang S, Chen S, Guo T, Chen H. Passive Focusing of Single Cells Using Microwell Arrays for High-Accuracy Image-Activated Sorting. Anal Chem 2024; 96:347-354. [PMID: 38153415 DOI: 10.1021/acs.analchem.3c04195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Sorting single cells from a population was of critical importance in areas such as cell line development and cell therapy. Image-based sorting is becoming a promising technique for the nonlabeling isolation of cells due to the capability of providing the details of cell morphology. This study reported the focusing of cells using microwell arrays and the following automatic size sorting based on the real-time recognition of cells. The simulation first demonstrated the converged streamlines to the symmetrical plane contributed to the focusing effect. Then, the influence of connecting microchannel, flowing length, particle size, and the sample flow rate on the focusing effect was experimentally analyzed. Both microspheres and cells could be aligned in a straight line at the Reynolds number (Re) of 0.027-0.187 and 0.027-0.08, respectively. The connecting channel was proved to drastically improve the focusing performance. Afterward, a tapered microwell array was utilized to focus sphere/cell spreading in a wide channel to a straight line. Finally, a custom algorithm was employed to identify and sort the size of microspheres/K562 cells with a throughput of 1 event/s and an accuracy of 97.8/97.1%. The proposed technique aligned cells to a straight line at low Reynolds numbers and greatly facilitated the image-activated sorting without the need for a high-speed camera or flow control components with high frequency. Therefore, it is of enormous application potential in the field of nonlabeled separation of single cells.
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Affiliation(s)
- Zheng Xu
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Zhenlin Chen
- Department of Biomedical Engineering, College of Engineering, Kowloon, City University of Hong Kong, Hong Kong SAR, China
| | - Shiming Yang
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Siyuan Chen
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
| | - Tianruo Guo
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Huaying Chen
- School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China
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5
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Panklang N, Vijitnukoonpradit K, Putaporntip C, Chotivanich K, Nakano M, Horprathum M, Techaumnat B. Study on the dielectrophoretic characteristics of malaria-infected red blood cells. Electrophoresis 2023; 44:1837-1846. [PMID: 37753817 DOI: 10.1002/elps.202300088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 08/21/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023]
Abstract
Malaria is a tropical disease caused by parasites in the genus Plasmodium, which still presents 241 million cases and nearly 627,000 deaths recently. In this work, we used the dielectrophoresis (DEP) to characterize red blood cells in a microchannel. The purpose of this work is to determine the difference between the normal and the malaria-infected cells based on the DEP characteristics. The samples were infected cells and normal red blood cells, which were either prepared in culture or obtained from volunteers. Diamond-shaped and curved micropillars were used to create different degrees of DEP in the gap between them. The DEP crossover frequencies were observed with the diamond-shaped micropillars. The cell velocity under negative dielectrophoresis (nDEP) at a low frequency was examined with the curved micropillars. The measured lower crossover frequencies were remarkably different between the malaria-infected cells and the normal cells, whereas the higher crossover frequencies were similar among the samples. The velocity under nDEP was lower for the infected cells than the normal cells. The results imply that the malaria infection significantly decreases the capacitance but increases the conductance of the cell membrane, whereas a change in cytoplasmic conductivity may occur in a later stage of infection.
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Affiliation(s)
- Nitipong Panklang
- Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Pathumthani, Thailand
| | - Kitipob Vijitnukoonpradit
- Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Chaturong Putaporntip
- Molecular Biology of Malaria and Opportunistic Parasites Research Unit, Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Kesinee Chotivanich
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Michihiko Nakano
- Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan
| | - Mati Horprathum
- Spectroscopic and Sensing Devices Research Group, National Electronic and Computer Technology Center (NECTEC), National Science and Technology Development Agency, Pathumthani, Thailand
| | - Boonchai Techaumnat
- Department of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
- Micro/Nano Electromechanical Integrated Device Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
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6
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Torres-Castro K, Acuña-Umaña K, Lesser-Rojas L, Reyes DR. Microfluidic Blood Separation: Key Technologies and Critical Figures of Merit. MICROMACHINES 2023; 14:2117. [PMID: 38004974 PMCID: PMC10672873 DOI: 10.3390/mi14112117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/01/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023]
Abstract
Blood is a complex sample comprised mostly of plasma, red blood cells (RBCs), and other cells whose concentrations correlate to physiological or pathological health conditions. There are also many blood-circulating biomarkers, such as circulating tumor cells (CTCs) and various pathogens, that can be used as measurands to diagnose certain diseases. Microfluidic devices are attractive analytical tools for separating blood components in point-of-care (POC) applications. These platforms have the potential advantage of, among other features, being compact and portable. These features can eventually be exploited in clinics and rapid tests performed in households and low-income scenarios. Microfluidic systems have the added benefit of only needing small volumes of blood drawn from patients (from nanoliters to milliliters) while integrating (within the devices) the steps required before detecting analytes. Hence, these systems will reduce the associated costs of purifying blood components of interest (e.g., specific groups of cells or blood biomarkers) for studying and quantifying collected blood fractions. The microfluidic blood separation field has grown since the 2000s, and important advances have been reported in the last few years. Nonetheless, real POC microfluidic blood separation platforms are still elusive. A widespread consensus on what key figures of merit should be reported to assess the quality and yield of these platforms has not been achieved. Knowing what parameters should be reported for microfluidic blood separations will help achieve that consensus and establish a clear road map to promote further commercialization of these devices and attain real POC applications. This review provides an overview of the separation techniques currently used to separate blood components for higher throughput separations (number of cells or particles per minute). We present a summary of the critical parameters that should be considered when designing such devices and the figures of merit that should be explicitly reported when presenting a device's separation capabilities. Ultimately, reporting the relevant figures of merit will benefit this growing community and help pave the road toward commercialization of these microfluidic systems.
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Affiliation(s)
- Karina Torres-Castro
- Biophysical and Biomedical Measurements Group, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD 20899, USA;
- Theiss Research, La Jolla, CA 92037, USA
| | - Katherine Acuña-Umaña
- Medical Devices Master’s Program, Instituto Tecnológico de Costa Rica (ITCR), Cartago 30101, Costa Rica
| | - Leonardo Lesser-Rojas
- Research Center in Atomic, Nuclear and Molecular Sciences (CICANUM), San José 11501, Costa Rica;
- School of Physics, Universidad de Costa Rica (UCR), San José 11501, Costa Rica
| | - Darwin R. Reyes
- Biophysical and Biomedical Measurements Group, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, MD 20899, USA;
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7
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Kepper M, Karim MN, Baune M, Thöming J, Pesch GR. Influence of the filter grain morphology on separation efficiency in dielectrophoretic filtration. Electrophoresis 2023; 44:1645-1654. [PMID: 37380622 DOI: 10.1002/elps.202300075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 06/09/2023] [Accepted: 06/20/2023] [Indexed: 06/30/2023]
Abstract
Recovery of noble materials from waste is essential for industries around the globe. Dielectrophoretic (DEP) filtration, an electrically switchable particle separation technique, can be applied to tackle this challenge. It is highly selective regarding particle size, material or shape. Expanding the scope of DEP towards high throughput and improving the trapping efficiency are vital to make DEP a viable robust alternative to conventional separation methods. DEP filtration works by selective immobilisation of particles in a porous medium by the action of an inhomogeneous electric field. The field inhomogeneity comes from scattering an electric field at the phase boundary between the particle suspension and the filter surface. In this article, we show how the filter structure affects the DEP separation. We study fixed bed filters of three different grain types and find that the morphology of the grains highly influences the DEP filter efficiency. Specifically, grains with irregular surface structure and high perceived angularity show high separation efficiency. We believe these insights into the design of DEP filtration will pave the way towards its application in, for example, the recovery of valuable materials from electronic waste dust.
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Affiliation(s)
- Mariia Kepper
- Faculty of Production Engineering, Chemical Process Engineering (CVT), University of Bremen, Bremen, Germany
| | - Md Nurul Karim
- Faculty of Production Engineering, Advanced Ceramics, University of Bremen, Bremen, Germany
| | - Michael Baune
- Faculty of Production Engineering, Chemical Process Engineering (CVT), University of Bremen, Bremen, Germany
| | - Jorg Thöming
- Faculty of Production Engineering, Chemical Process Engineering (CVT), University of Bremen, Bremen, Germany
- MAPEX Center for Materials and Processes, University of Bremen, Bremen, Germany
| | - Georg R Pesch
- Faculty of Production Engineering, Chemical Process Engineering (CVT), University of Bremen, Bremen, Germany
- School of Chemical and Bioprocess Engineering, University College Dublin, Dublin, Ireland
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8
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Sato T, Kaneko K, Hayakawa T, Suzuki H. Pneumatic Microballoons for Active Control of the Vibration-Induced Flow. MICROMACHINES 2023; 14:2010. [PMID: 38004868 PMCID: PMC10673574 DOI: 10.3390/mi14112010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023]
Abstract
Vibration-induced flow (VIF), in which a mean flow is induced around a microstructure by applying periodic vibrations, is increasingly used as an active flow-control technique at the microscale. In this study, we have developed a microdevice that actively controls the VIF patterns using elastic membrane protrusions (microballoons) actuated by pneumatic pressure. This device enables on-demand spatial and temporal fluid manipulation using a single device that cannot be achieved using a conventional fixed-structure arrangement. We successfully demonstrated that the device achieved displacements of up to 38 µm using the device within a pressure range of 0 to 30 kPa, indicating the suitability of the device for microfluidic applications. Using this active microballoon array, we demonstrated that the device can actively manipulate the flow field and induce swirling flows. Furthermore, we achieved selective actuation of the microballoon using this system. By applying air pressure from a multi-input channel system through a connection tube, the microballoons corresponding to each air channel can be selectively actuated. This enabled precise control of the flow field and periodic switching of the flow patterns using a single chip. In summary, the proposed microdevice provides active control of VIF patterns and has potential applications in advanced microfluidics, such as fluid mixing and particle manipulation.
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Affiliation(s)
| | | | | | - Hiroaki Suzuki
- Department of Precision Mechanics, Faculty of Science and Engineering, Chuo University, Tokyo 112-8551, Japan; (T.S.); (K.K.); (T.H.)
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9
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Alkhaiyat AM, Badran M. Numerical Simulation of a Lab-on-Chip for Dielectrophoretic Separation of Circulating Tumor Cells. MICROMACHINES 2023; 14:1769. [PMID: 37763932 PMCID: PMC10534381 DOI: 10.3390/mi14091769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 08/20/2023] [Accepted: 08/26/2023] [Indexed: 09/29/2023]
Abstract
Circulating tumor cells (CTCs) are cancer cells detached from tumors that enter the bloodstream with the rest of the blood cells before settling on remote organs and growing. CTCs play a major role as a target for cancer diagnosis. This study aims to propose and simulate a lab-on-chip (LOC) design that separates CTCs from white blood cells (WBCs) and blood platelets (PLTs) using low-voltage dielectrophoretic separation with high efficiency. The proposed design include two stages a passive and an active one cascaded in a compact package. Numerical simulations are performed on the COMSOL Multiphysics® software package to optimize the geometric parameters of the LOC, such as the width and length of the microchannel and the number of electrodes and their arrangements. Moreover, the effects of adjusting the applied voltage values as well as buffer inlet velocity are investigated. The proposed LOC design uses four electrodes at ±2 V to achieve 100% separation efficiency for the three cell types in simulation. The 919 µm × 440 µm LOC has a channel width of 40 µm. The inlet velocities for the blood-carrying cells and buffer are 134 and 850 µm/s, respectively. The proposed LOC can be used for the early detection of CTCs, which can be beneficial in cancer diagnosis and early treatment. In addition, it can be used in cancer prognosis, treatment monitoring and personalizing medicine.
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Affiliation(s)
| | - Mohamed Badran
- Department of Mechanical Engineering, The American University in Cairo, New Cairo 11835, Egypt;
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10
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Lomeli-Martin A, Ahamed N, Abhyankar VV, Lapizco-Encinas BH. Electropatterning-Contemporary developments for selective particle arrangements employing electrokinetics. Electrophoresis 2023; 44:884-909. [PMID: 37002779 PMCID: PMC10330388 DOI: 10.1002/elps.202200286] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/25/2023] [Accepted: 03/27/2023] [Indexed: 04/04/2023]
Abstract
The selective positioning and arrangement of distinct types of multiscale particles can be used in numerous applications in microfluidics, including integrated circuits, sensors and biochips. Electrokinetic (EK) techniques offer an extensive range of options for label-free manipulation and patterning of colloidal particles by exploiting the intrinsic electrical properties of the target of interest. EK-based techniques have been widely implemented in many recent studies, and various methodologies and microfluidic device designs have been developed to achieve patterning two- and three-dimensional (3D) patterned structures. This review provides an overview of the progress in electropatterning research during the last 5 years in the microfluidics arena. This article discusses the advances in the electropatterning of colloids, droplets, synthetic particles, cells, and gels. Each subsection analyzes the manipulation of the particles of interest via EK techniques such as electrophoresis and dielectrophoresis. The conclusions summarize recent advances and provide an outlook on the future of electropatterning in various fields of application, especially those with 3D arrangements as their end goal.
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Affiliation(s)
- Adrian Lomeli-Martin
- Microscale Bioseparations Laboratory and Biomedical Engineering Department, Rochester Institute of Technology, Rochester, New York, USA
| | - Nuzhet Ahamed
- Microscale Bioseparations Laboratory and Biomedical Engineering Department, Rochester Institute of Technology, Rochester, New York, USA
| | - Vinay V. Abhyankar
- Biological Microsystems Laboratory and Biomedical Engineering Department, Rochester Institute of Technology, Rochester, New York, USA
| | - Blanca H. Lapizco-Encinas
- Microscale Bioseparations Laboratory and Biomedical Engineering Department, Rochester Institute of Technology, Rochester, New York, USA
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11
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Bonyadi F, Kavruk M, Ucak S, Cetin B, Bayramoglu G, Dursun AD, Arica Y, Ozalp VC. Real-Time Biosensing Bacteria and Virus with Quartz Crystal Microbalance: Recent Advances, Opportunities, and Challenges. Crit Rev Anal Chem 2023:1-12. [PMID: 37191651 DOI: 10.1080/10408347.2023.2211164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Continuous monitoring of pathogens finds applications in environmental, medical, and food industry settings. Quartz crystal microbalance (QCM) is one of the promising methods for real-time detection of bacteria and viruses. QCM is a technology that utilizes piezoelectric principles to measure mass and is commonly used in detecting the mass of chemicals adhering to a surface. Due to its high sensitivity and rapid detection times, QCM biosensors have attracted considerable attention as a potential method for detecting infections early and tracking the course of diseases, making it a promising tool for global public health professionals in the fight against infectious diseases. This review first provides an overview of the QCM biosensing method, including its principle of operation, various recognition elements used in biosensor creation, and its limitations and then summarizes notable examples of QCM biosensors for pathogens, focusing on microfluidic magnetic separation techniques as a promising tool in the pretreatment of samples. The review explores the use of QCM sensors in detecting pathogens in various samples, such as food, wastewater, and biological samples. The review also discusses the use of magnetic nanoparticles for sample preparation in QCM biosensors and their integration into microfluidic devices for automated detection of pathogens and highlights the importance of accurate and sensitive detection methods for early diagnosis of infections and the need for point-of-care approaches to simplify and reduce the cost of operation.
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Affiliation(s)
- Farzaneh Bonyadi
- Department of Histology and Embryology, Faculty of Medicine, Baskent University, Ankara, Turkey
| | - Murat Kavruk
- Department of Medical Biology, School of Medicine, Istanbul Aydin University, Istanbul, Turkey
| | - Samet Ucak
- Department of Medical Biology, School of Medicine, Istanbul Aydin University, Istanbul, Turkey
| | - Barbaros Cetin
- Department of Mechanical Engineering, Bilkent University, Ankara, Turkey
| | | | - Ali D Dursun
- Department of Physiology, School of Medicine, Atilim University, Ankara, Turkey
| | - Yakup Arica
- Department of Chemistry, Gazi University, Ankara, Turkey
| | - Veli C Ozalp
- Department of Histology and Embryology, Faculty of Medicine, Baskent University, Ankara, Turkey
- Department of Medical Biology, School of Medicine, Atilim University, 06830, Ankara, Turkey
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12
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Oladokun R, Adekanmbi E, Ueti M, Srivastava S. Dielectric characterization of Babesia bovis using the dielectrophoretic crossover frequency. Electrophoresis 2023. [PMID: 37160713 DOI: 10.1002/elps.202200263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 04/12/2023] [Accepted: 04/19/2023] [Indexed: 05/11/2023]
Abstract
Coinfection with the tick-transmitted pathogen Babesia spp. is becoming a serious health problem because of the erythrocyte invasion through Ixodes scapularis tick. The transmission of this protozoan by blood transfusion often results in high morbidity and mortality in recipients. A novel way to detect parasitized erythrocytes is by utilizing dielectrophoresis, an electrokinetic technique on a microfluidic platform, to improve the diagnostics of Babesia spp. The differences in the dielectric properties of Babesia spp.-infected erythrocytes versus healthy erythrocytes were exploited to design a fast and cost-effective diagnostic tool. One crucial factor for a successful diagnostic platform via dielectrophoretic separation is the dielectric characterization of Babesia-infected erythrocytes, which is investigated in this paper. The influence of medium conductivity and erythrocytes phenotype and genotype over the first crossover frequency (fco1 ) are used to quantify the dielectric properties of the infected cells. A sigmoidal curve was plotted via curve fitting of the single-shell model, which has been proven appropriate for parasitized cell populations where considerable cell geometry variation occurs. The difference in these curves is relevant for the separation of cells population. Microliters of sample and reagent were used throughout this experiment; the scale, results obtained, and simplicity of the system often make it very suitable for point-of-care babesiosis disease diagnostics.
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Affiliation(s)
- Raphael Oladokun
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia, USA
| | | | - Massaro Ueti
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington, USA
| | - Soumya Srivastava
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia, USA
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13
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Chen X, Chen X, Peng Y, Zhu L, Wang W. Dielectrophoretic Colloidal Levitation by Electrode Polarization in Oscillating Electric Fields. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:6932-6945. [PMID: 37148258 DOI: 10.1021/acs.langmuir.3c00759] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Controlled colloidal levitation is key to many applications. Recently, it was discovered that polymer microspheres were levitated to a few micrometers in aqueous solutions in alternating current (AC) electric fields. A few mechanisms have been proposed to explain this AC levitation such as electrohydrodynamic flows, asymmetric rectified electric fields, and aperiodic electrodiffusiophoresis. Here, we propose an alternative mechanism based on dielectrophoresis in a spatially inhomogeneous electric field gradient extending from the electrode surface micrometers into the bulk. This field gradient is derived from electrode polarization, where counterions accumulate near electrode surfaces. A dielectric microparticle is then levitated from the electrode surface to a height where the dielectrophoretic lift balances gravity. The dielectrophoretic levitation mechanism is supported by two numerical models. One model assumes point dipoles and solves for the Poisson-Nernst-Planck equations, while the second model incorporates a dielectric sphere of a realistic size and permittivity and uses the Maxwell-stress tensor formulation to solve for the electrical body force. In addition to proposing a plausible levitation mechanism, we further demonstrate that AC colloidal levitation can be used to move synthetic microswimmers to controlled heights. This study sheds light on understanding the dynamics of colloidal particles near an electrode and paves the way to using AC levitation to manipulate colloidal particles, active or passive.
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Affiliation(s)
- Xiaowen Chen
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Xi Chen
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Yixin Peng
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Lailai Zhu
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - Wei Wang
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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Chang W, Kim J, Kim M, Lee MW, Lim CH, Kim G, Hwang S, Chang J, Min YH, Jeon K, Kim S, Choi YH, Lee JS. Concurrent self-assembly of RGB microLEDs for next-generation displays. Nature 2023; 617:287-291. [PMID: 37138079 DOI: 10.1038/s41586-023-05889-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 02/24/2023] [Indexed: 05/05/2023]
Abstract
MicroLED displays have been in the spotlight as the next-generation displays owing to their various advantages, including long lifetime and high brightness compared with organic light-emitting diode (OLED) displays. As a result, microLED technology1,2 is being commercialized for large-screen displays such as digital signage and active R&D programmes are being carried out for other applications, such as augmented reality3, flexible displays4 and biological imaging5. However, substantial obstacles in transfer technology, namely, high throughput, high yield and production scalability up to Generation 10+ (2,940 × 3,370 mm2) glass sizes, need to be overcome so that microLEDs can enter mainstream product markets and compete with liquid-crystal displays and OLED displays. Here we present a new transfer method based on fluidic self-assembly (FSA) technology, named magnetic-force-assisted dielectrophoretic self-assembly technology (MDSAT), which combines magnetic and dielectrophoresis (DEP) forces to achieve a simultaneous red, green and blue (RGB) LED transfer yield of 99.99% within 15 min. By embedding nickel, a ferromagnetic material, in the microLEDs, their movements were controlled by using magnets, and by applying localized DEP force centred around the receptor holes, these microLEDs were effectively captured and assembled in the receptor site. Furthermore, concurrent assembly of RGB LEDs were demonstrated through shape matching between microLEDs and receptors. Finally, a light-emitting panel was fabricated, showing damage-free transfer characteristics and uniform RGB electroluminescence emission, demonstrating our MDSAT method to be an excellent transfer technology candidate for high-volume production of mainstream commercial products.
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Affiliation(s)
- Wonjae Chang
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea.
| | - Jungsub Kim
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Myoungsoo Kim
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Min Woo Lee
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Chung Hyun Lim
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Gunho Kim
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Sunghyun Hwang
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Jeeyoung Chang
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Young Hwan Min
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Kiseong Jeon
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Soohyun Kim
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Yoon-Ho Choi
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea
| | - Jeong Soo Lee
- Materials & Devices Advanced Research Center, LG Electronics, Seoul, Republic of Korea.
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15
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Keumarsi MM, Oskouei PF, Dezhkam R, Shamloo A, Vatandoust F, Amiri HA. Numerical study of a double-stair-shaped dielectrophoresis channel for continuous on-chip cell separation and lysis using finite element method. J Chromatogr A 2023; 1696:463960. [PMID: 37030128 DOI: 10.1016/j.chroma.2023.463960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/16/2023] [Accepted: 04/01/2023] [Indexed: 04/04/2023]
Abstract
Prognostication of numerous chronic diseases are in need of identifying circulating tumor cells (CTCs), afterwards, separating and reviving contaminated samples are required. Conventional methods of separating blood cells, namely cytometry or magnetically activated cell sorting, in many cases lose their functionality, or efficiency under different conditions. Hence microfluidic methods of separation have been implemented. Herein, an innovative integrated double stair-shaped microchannel is designed and optimized, capable of 'separation', and 'chemical lysis' simultaneously in which the lysis reagent concentration can be controlled to tune the lysis intensity. The method of insulator-based dielectrophoresis (iDEP), which is the main physics in this device, is utilized yielding maximum separation. Pivotal features of the applied voltage, the voltage difference, the angles and the number of stairs, and the width of the throat in the microchannel have been numerically explored in order to optimize the channel in terms of separation and the lysis buffer concentration. The overall state of optimum case for the voltage difference (ΔV) of 10 owns the following features: the number of stairs is 2, the angle of stairs is 110°, the width of throat is 140 μm, and the inlet voltages are 30 V and 40 V. Also, the overall state of optimum cases for delta possess the following features: the number of stairs is 2, the angle of stairs is 110°, the width of throat is 140 μm, and the inlet voltages are 30 V and 35 V.
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Affiliation(s)
| | - Pouria Feyzi Oskouei
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
| | - Rasool Dezhkam
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Center, Sharif University of Technology, Tehran, Iran
| | - Amir Shamloo
- Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran; Stem Cell and Regenerative Medicine Center, Sharif University of Technology, Tehran, Iran.
| | - Farzad Vatandoust
- School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran; Department of Biomechanics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
| | - Hoseyn A Amiri
- School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran; Department of Biomechanics, School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
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Abdulhameed A, Halim MM, Halin IA. Dielectrophoretic alignment of carbon nanotubes: theory, applications, and future. NANOTECHNOLOGY 2023; 34:242001. [PMID: 36921341 DOI: 10.1088/1361-6528/acc46c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Carbon nanotubes (CNTs) are nominated to be the successor of several semiconductors and metals due to their unique physical and chemical properties. It has been concerning that the anisotropic and low controllability of CNTs impedes their adoption in commercial applications. Dielectrophoresis (DEP) is known as the electrokinetics motion of polarizable nanoparticles under the influence of nonuniform electric fields. The uniqueness of this phenomenon allows DEP to be employed as a novel method to align, assemble, separate, and manipulate CNTs suspended in liquid mediums. This article begins with a brief overview of CNT structure and production, with the emphasize on their electrical properties and response to electric fields. The DEP phenomenon as a CNT alignment method is demonstrated and graphically discussed, along with its theory, procedure, and parameters. We also discussed the side forces that arise in DEP systems and how they negatively or positively affect the CNT alignment. The article concludes with a brief review of CNT-based devices fabricated using DEP, as well as the method's limitations and future prospects.
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Affiliation(s)
| | - Mohd Mahadi Halim
- School of Physics, Universiti Sains Malaysia, 11800 USM Penang, Malaysia
| | - Izhal Abdul Halin
- Department of Electrical and Electronic Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang, 43400, Malaysia
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17
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Zhang Q, Liu B, Gao G, Vecitis CD. Insulated Interlaced Surface Electrodes for Bacterial Inactivation and Detachment. J Phys Chem B 2023; 127:3164-3174. [PMID: 36996492 DOI: 10.1021/acs.jpcb.2c09047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
Effective and stable antibiofouling surfaces and interfaces have long been of research interest. In this study, we designed, fabricated, and evaluated a surface coated with insulated interlaced electrodes for bacterial fouling reduction. The electrodes were printed Ag filaments of 100 μm width and 400 μm spacing over an area of 2 × 2 cm2. The insulating Ag electrode coating material was polydimethylsiloxane (PDMS) or thermoplastic polyurethane (TPU) with a thickness of 10 to 40 μm. To evaluate the antibiofouling potential, E. coli inactivation after 2 min contact with the electrified surface and P. fluorescens detachment after 15 and 40 h growth were examined. The extent of bacterial inactivation was related to the insulating material, coating thickness, and applied voltage (magnitude and AC vs DC). A high bacterial inactivation (>98%) was achieved after only 2 min of treatment at 50 V AC and 10 kHz using a 10 μm TPU coating. P. fluorescens detachment after 15 and 40 h incubation in the absence of applied potential was completed with simultaneous cross-flow rinsing and AC application. Higher AC voltages and longer cross-flow rinsing times resulted in greater bacterial detachment with bacterial coverage able to be reduced to <1% after only 2 min of rinsing at 50 V AC and 10 kHz. Theoretical electric field analysis indicated that at 10 V the field strength penetrating the aqueous solution is nonuniform (∼16,000-20,000 V m-1 for the 20 μm TPU) and suggests that dielectrophoresis plays a key role in bacterial detachment. The bacterial inactivation and detachment trends observed in this study indicate that this technique has merit for future antibiofouling surface development.
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Affiliation(s)
- Qiaoying Zhang
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Bin Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Guandao Gao
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Chad D Vecitis
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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18
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Zhao K, Hu M, van Baalen C, Alvarez L, Isa L. Sorting of heterogeneous colloids by AC-dielectrophoretic forces in a microfluidic chip with asymmetric orifices. J Colloid Interface Sci 2023; 634:921-929. [PMID: 36571855 DOI: 10.1016/j.jcis.2022.12.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
HYPOTHESIS The synthesis of compositionally heterogeneous particles is central to the development of complex colloidal units for self-assembly and self-propulsion. Yet, as the complexity of particles grows, synthesis becomes more prone to "errors". We hypothesize that alternating-current dielectrophoretic forces can efficiently sort Janus particles, as a function of patch size and material, and colloidal dumbbells by size. EXPERIMENTS We prepared Janus particles with different patch size and material by physical vapor deposition and colloidal dumbbells via capillarity-assisted particle assembly. We then performed sorting experiments in a microfluidic chip comprising electrodes with asymmetric orifices, specifically exploiting the dielectric contrast between different portions of the particles or their size difference to steer them towards different outlets. FINDINGS We calculated that the DEP force for Janus particles may switch from positive to negative as a function of composition at a critical AC frequency, thus enabling sorting different particles crossing the electrodes' region. The predictions are confirmed by optical microscopy experiments. We also show that intact and "broken" dumbbells can be simply separated as they experience different DEP forces. The integration of multiple asymmetric orifices leads a larger zone with high field gradient to increase separation efficiency and makes it a promising tool to select precise particle populations, isolating fractions with narrowly distributed characteristics.
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Affiliation(s)
- Kai Zhao
- Liaoning Key Laboratory of Marine Sensing and Intelligent Detection, Department of Information Science and Technology, Dalian Maritime University, 116026 Dalian, China; Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland.
| | - Minghan Hu
- Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - Carolina van Baalen
- Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - Laura Alvarez
- Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - Lucio Isa
- Laboratory for Soft Materials and Interfaces, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland.
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Jiang Y, Chen J, Xuan W, Liang Y, Huang X, Cao Z, Sun L, Dong S, Luo J. Numerical Study of Particle Separation through Integrated Multi-Stage Surface Acoustic Waves and Modulated Driving Signals. SENSORS (BASEL, SWITZERLAND) 2023; 23:2771. [PMID: 36904975 PMCID: PMC10006892 DOI: 10.3390/s23052771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
The manipulation of biomedical particles, such as separating circulating tumor cells from blood, based on standing surface acoustic wave (SSAW) has been widely used due to its advantages of label-free approaches and good biocompatibility. However, most of the existing SSAW-based separation technologies are dedicated to isolate bioparticles in only two different sizes. It is still challenging to fractionate various particles in more than two different sizes with high efficiency and accuracy. In this work, to tackle the problems of low efficiency for multiple cell particle separation, integrated multi-stage SSAW devices with different wavelengths driven by modulated signals were designed and studied. A three-dimensional microfluidic device model was proposed and analyzed using the finite element method (FEM). In addition, the effect of the slanted angle, acoustic pressure, and the resonant frequency of the SAW device on the particle separation were systemically studied. From the theoretical results, the separation efficiency of three different size particles based on the multi-stage SSAW devices reached 99%, which was significantly improved compared with conventional single-stage SSAW devices.
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Affiliation(s)
- Yingqi Jiang
- Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Key Laboratory of Large-Scale Integrated Circuit Design, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jin Chen
- Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Key Laboratory of Large-Scale Integrated Circuit Design, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Weipeng Xuan
- Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Key Laboratory of Large-Scale Integrated Circuit Design, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yuhao Liang
- Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Key Laboratory of Large-Scale Integrated Circuit Design, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Xiwei Huang
- Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Key Laboratory of Large-Scale Integrated Circuit Design, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Zhen Cao
- Key Laboratory of Advanced Micro/Nano Electronics Devices & Smart Systems of Zhejiang, College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China
- International Joint Innovation Center, Zhejiang University, Haining 314400, China
| | - Lingling Sun
- Ministry of Education Key Laboratory of RF Circuits and Systems, College of Electronic & Information, Hangzhou Dianzi University, Hangzhou 310018, China
- Zhejiang Key Laboratory of Large-Scale Integrated Circuit Design, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Shurong Dong
- Key Laboratory of Advanced Micro/Nano Electronics Devices & Smart Systems of Zhejiang, College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China
- International Joint Innovation Center, Zhejiang University, Haining 314400, China
| | - Jikui Luo
- Key Laboratory of Advanced Micro/Nano Electronics Devices & Smart Systems of Zhejiang, College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China
- International Joint Innovation Center, Zhejiang University, Haining 314400, China
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20
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Recent advances in non-optical microfluidic platforms for bioparticle detection. Biosens Bioelectron 2023; 222:114944. [PMID: 36470061 DOI: 10.1016/j.bios.2022.114944] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 12/03/2022]
Abstract
The effective analysis of the basic structure and functional information of bioparticles are of great significance for the early diagnosis of diseases. The synergism between microfluidics and particle manipulation/detection technologies offers enhanced system integration capability and test accuracy for the detection of various bioparticles. Most microfluidic detection platforms are based on optical strategies such as fluorescence, absorbance, and image recognition. Although optical microfluidic platforms have proven their capabilities in the practical clinical detection of bioparticles, shortcomings such as expensive components and whole bulky devices have limited their practicality in the development of point-of-care testing (POCT) systems to be used in remote and underdeveloped areas. Therefore, there is an urgent need to develop cost-effective non-optical microfluidic platforms for bioparticle detection that can act as alternatives to optical counterparts. In this review, we first briefly summarise passive and active methods for bioparticle manipulation in microfluidics. Then, we survey the latest progress in non-optical microfluidic strategies based on electrical, magnetic, and acoustic techniques for bioparticle detection. Finally, a perspective is offered, clarifying challenges faced by current non-optical platforms in developing practical POCT devices and clinical applications.
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21
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Tong Z, Shen C, Li Q, Yin H, Mao H. Combining sensors and actuators with electrowetting-on-dielectric (EWOD): advanced digital microfluidic systems for biomedical applications. Analyst 2023; 148:1399-1421. [PMID: 36752059 DOI: 10.1039/d2an01707e] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The concept of digital microfluidics (DMF) enables highly flexible and precise droplet manipulation at a picoliter scale, making DMF a promising approach to realize integrated, miniaturized "lab-on-a-chip" (LOC) systems for research and clinical purposes. Owing to its simplicity and effectiveness, electrowetting-on-dielectric (EWOD) is one of the most commonly studied and applied effects to implement DMF. However, complex biomedical assays usually require more sophisticated sample handling and detection capabilities than basic EWOD manipulation. Alternatively, combined systems integrating EWOD actuators and other fluidic handling techniques are essential for bringing DMF into practical use. In this paper, we briefly review the main approaches for the integration/combination of EWOD with other microfluidic manipulation methods or additional external fields for specified biomedical applications. The form of integration ranges from independently operating sub-systems to fully coupled hybrid actuators. The corresponding biomedical applications of these works are also summarized to illustrate the significance of these innovative combination attempts.
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Affiliation(s)
- Zhaoduo Tong
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. .,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chuanjie Shen
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. .,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qiushi Li
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
| | - Hao Yin
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China. .,Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hongju Mao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China.
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22
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Bakhtiaridoost S, Habibiyan H, Ghafoorifard H. A microfluidic device to separate high-quality plasma from undiluted whole blood sample using an enhanced gravitational sedimentation mechanism. Anal Chim Acta 2023; 1239:340641. [PMID: 36628743 DOI: 10.1016/j.aca.2022.340641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 11/02/2022] [Accepted: 11/16/2022] [Indexed: 11/21/2022]
Abstract
The growing interest in lab-on-a-chip systems for plasma separation has led to the presentation of various devices. Trench-based devices benefiting from gravitational sedimentation are efficient structures with air-locking and low speed-drawbacks. The present study introduces a fast, hemolysis-free, highly efficient blood plasma separation microfluidic device. The proposed device is based on gravitational sedimentation combined with dielectrophoresis force to promote the purity of the separated plasma, reduce the separation process time, and overcome the air-locking problem. The effect of geometrical parameters on the separation process is investigated using finite element analysis to attain optimal design specifications. A drop of whole blood (10 μl) is injected into the fabricated chip at four flow rates of 70 nl/s to 100 nl/s. It takes less than 4 min to obtain 2.2 μl plasma from undiluted blood without losing plasma proteins. Additionally, a porous Melt-Blown Polypropylene (MBPP) layer is used to eliminate the air-locking problem, which in previous trench-based microsystems led to time-consuming device preparation steps. Blood samples with various hematocrits (15%-65%) are tested with the applied voltages of 0-20 Vpp through the optimized structure. A purity of 99.98% ± 0.02% (evaluated by hemocytometry) is achieved using optimized dielectrophoresis force by the applied voltage of 20 Vpp, which is more than the previous studies. The UV-Visible spectroscopy results confirm obtaining a non-hemolyzed sample at a flow rate of 70 nl/s. The proposed device achieves a relative increase in the flow rate compared to similar previous studies while maintaining the high quality of the separated plasma. This achievement lies in using the MBPP layer and combining two separation methods.
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Affiliation(s)
| | - Hamidreza Habibiyan
- Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, Iran.
| | - Hassan Ghafoorifard
- Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran
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23
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Dos-Reis-Delgado AA, Carmona-Dominguez A, Sosa-Avalos G, Jimenez-Saaib IH, Villegas-Cantu KE, Gallo-Villanueva RC, Perez-Gonzalez VH. Recent advances and challenges in temperature monitoring and control in microfluidic devices. Electrophoresis 2023; 44:268-297. [PMID: 36205631 PMCID: PMC10092670 DOI: 10.1002/elps.202200162] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/22/2022] [Accepted: 10/03/2022] [Indexed: 11/07/2022]
Abstract
Temperature is a critical-yet sometimes overlooked-parameter in microfluidics. Microfluidic devices can experience heating inside their channels during operation due to underlying physicochemical phenomena occurring therein. Such heating, whether required or not, must be monitored to ensure adequate device operation. Therefore, different techniques have been developed to measure and control temperature in microfluidic devices. In this contribution, the operating principles and applications of these techniques are reviewed. Temperature-monitoring instruments revised herein include thermocouples, thermistors, and custom-built temperature sensors. Of these, thermocouples exhibit the widest operating range; thermistors feature the highest accuracy; and custom-built temperature sensors demonstrate the best transduction. On the other hand, temperature control methods can be classified as external- or integrated-methods. Within the external methods, microheaters are shown to be the most adequate when working with biological samples, whereas Peltier elements are most useful in applications that require the development of temperature gradients. In contrast, integrated methods are based on chemical and physical properties, structural arrangements, which are characterized by their low fabrication cost and a wide range of applications. The potential integration of these platforms with the Internet of Things technology is discussed as a potential new trend in the field.
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Affiliation(s)
| | | | - Gerardo Sosa-Avalos
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo, León, Mexico
| | - Ivan H Jimenez-Saaib
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo, León, Mexico
| | - Karen E Villegas-Cantu
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo, León, Mexico
| | | | - Víctor H Perez-Gonzalez
- School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo, León, Mexico
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24
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Xiang N, Ni Z. Inertial microfluidics: current status, challenges, and future opportunities. LAB ON A CHIP 2022; 22:4792-4804. [PMID: 36263793 DOI: 10.1039/d2lc00722c] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Inertial microfluidics uses the hydrodynamic effects induced at finite Reynolds numbers to achieve passive manipulation of particles, cells, or fluids and offers the advantages of high-throughput processing, simple channel geometry, and label-free and external field-free operation. Since its proposal in 2007, inertial microfluidics has attracted increasing interest and is currently widely employed as an important sample preparation protocol for single-cell detection and analysis. Although great success has been achieved in the inertial microfluidics field, its performance and outcome can be further improved. From this perspective, herein, we reviewed the current status, challenges, and opportunities of inertial microfluidics concerning the underlying physical mechanisms, available simulation tools, channel innovation, multistage, multiplexing, or multifunction integration, rapid prototyping, and commercial instrument development. With an improved understanding of the physical mechanisms and the development of novel channels, integration strategies, and commercial instruments, improved inertial microfluidic platforms may represent a new foundation for advancing biomedical research and disease diagnosis.
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Affiliation(s)
- Nan Xiang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, 211189, China.
| | - Zhonghua Ni
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing, 211189, China.
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Lin X, Jiang Y, Wu JJ, Eda S, Wan N. An alternating current electrokinetics biosensor for rapid on-site serological screening of Taenia solium cysticercosis infection. Mikrochim Acta 2022; 189:476. [DOI: 10.1007/s00604-022-05575-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 11/09/2022] [Indexed: 11/27/2022]
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Xiang N, Ni Z. Portable Battery-Driven Microfluidic Cell Separation Instrument with Multiple Operational Modes. Anal Chem 2022; 94:16813-16820. [DOI: 10.1021/acs.analchem.2c03833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Nan Xiang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
| | - Zhonghua Ni
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, Southeast University, Nanjing 211189, China
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Singh N, Vladisavljević GT, Nadal F, Cottin-Bizonne C, Pirat C, Bolognesi G. Enhanced Accumulation of Colloidal Particles in Microgrooved Channels via Diffusiophoresis and Steady-State Electrolyte Flows. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14053-14062. [PMID: 36350104 PMCID: PMC9686125 DOI: 10.1021/acs.langmuir.2c01755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/23/2022] [Indexed: 06/16/2023]
Abstract
The delivery of colloidal particles in dead-end microstructures is very challenging, since these geometries do not allow net flows of particle-laden fluids; meanwhile, diffusive transport is slow and inefficient. Recently, we introduced a novel particle manipulation strategy, based on diffusiophoresis, whereby the salt concentration gradient between parallel electrolyte streams in a microgrooved channel induces the rapid (i.e., within minutes) and reversible accumulation, retention, and removal of colloidal particles in the microgrooves. In this study, we investigated the effects of salt contrast and groove depth on the accumulation process in silicon microgrooves and determined the experimental conditions that lead to a particle concentration peak of more than four times the concentration in the channel bulk. Also, we achieved an average particle concentration in the grooves of more than twice the concentration in the flowing streams and almost 2 orders of magnitude larger than the average concentration in the grooves in the absence of a salt concentration gradient. Analytical sufficient and necessary conditions for particle accumulation are also derived. Finally, we successfully tested the accumulation process in polydimethylsiloxane microgrooved channels, as they are less expensive to fabricate than silicon microgrooved substrates. The controlled and enhanced accumulation of colloidal particles in dead-end structures by solute concentration gradients has potential applications in soft matter and living systems, such as drug delivery, synthetic biology, and on-chip diagnostics.
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Affiliation(s)
- Naval Singh
- Department
of Chemical Engineering, Loughborough University, LoughboroughLE11 3TU, United Kingdom
| | - Goran T. Vladisavljević
- Department
of Chemical Engineering, Loughborough University, LoughboroughLE11 3TU, United Kingdom
| | - François Nadal
- Wolfson
School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, LoughboroughLE11 3TU, United Kingdom
| | - Cécile Cottin-Bizonne
- Institut
Lumière Matière, UMR5306 Université Claude Bernard
Lyon 1—CNRS, Université de Lyon, Villeurbanne Cedex69622, France
| | - Christophe Pirat
- Institut
Lumière Matière, UMR5306 Université Claude Bernard
Lyon 1—CNRS, Université de Lyon, Villeurbanne Cedex69622, France
| | - Guido Bolognesi
- Department
of Chemical Engineering, Loughborough University, LoughboroughLE11 3TU, United Kingdom
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Musso N, Romano A, Bonacci PG, Scandura G, Pandino C, Camarda M, Russo GI, Di Raimondo F, Cacciola E, Cacciola R. Label-Free Enrichment of Circulating Tumor Plasma Cells: Future Potential Applications of Dielectrophoresis in Multiple Myeloma. Int J Mol Sci 2022; 23:ijms231912052. [PMID: 36233350 PMCID: PMC9569623 DOI: 10.3390/ijms231912052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/23/2022] [Accepted: 09/28/2022] [Indexed: 12/05/2022] Open
Abstract
In multiple myeloma (MM), circulating tumor plasma cells (CTPCs) are an emerging prognostic factor, offering a promising and minimally invasive means for longitudinal patient monitoring. Recent advances highlight the complex biology of plasma cell trafficking, highlighting the phenotypic and genetic signatures of intra- and extra-medullary MM onset, making CTPC enumeration and characterization a new frontier of precision medicine for MM patients, requiring novel technological platforms for their standardized and harmonized detection. Dielectrophoresis (DEP) is an emerging label-free cell manipulation technique to separate cancer cells from healthy cells in peripheral blood samples, based on phenotype and membrane capacitance that could be successfully tested to enumerate and isolate CTPCs. Herein, we summarize preclinical data on DEP development for CTPC detection, as well as their clinical and research potential.
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Affiliation(s)
- Nicolò Musso
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, 95125 Catania, Italy
- StLab SRL, 95126 Catania, Italy
| | - Alessandra Romano
- Department of General Surgery and Surgical Medical Specialties, University of Catania, 95125 Catania, Italy
- Correspondence: ; Tel.: +39-095-378-2971
| | - Paolo Giuseppe Bonacci
- Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, 95125 Catania, Italy
| | - Grazia Scandura
- Department of General Surgery and Surgical Medical Specialties, University of Catania, 95125 Catania, Italy
| | - Clarissa Pandino
- Department of General Surgery and Surgical Medical Specialties, University of Catania, 95125 Catania, Italy
| | | | - Giorgio Ivan Russo
- Urology Section, University of Catania, Via S. Sofia 78, 95125 Catania, Italy
| | - Francesco Di Raimondo
- Department of General Surgery and Surgical Medical Specialties, University of Catania, 95125 Catania, Italy
| | - Emma Cacciola
- Department of Medical, Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, University of Catania, 95123 Catania, Italy
- Hemostasis/Hematology Unit, A.O.U. Policlinico “G. Rodolico-San Marco”, 95123 Catania, Italy
| | - Rossella Cacciola
- Hemostasis/Hematology Unit, A.O.U. Policlinico “G. Rodolico-San Marco”, 95123 Catania, Italy
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy
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Habibey R, Rojo Arias JE, Striebel J, Busskamp V. Microfluidics for Neuronal Cell and Circuit Engineering. Chem Rev 2022; 122:14842-14880. [PMID: 36070858 PMCID: PMC9523714 DOI: 10.1021/acs.chemrev.2c00212] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The widespread adoption of microfluidic devices among the neuroscience and neurobiology communities has enabled addressing a broad range of questions at the molecular, cellular, circuit, and system levels. Here, we review biomedical engineering approaches that harness the power of microfluidics for bottom-up generation of neuronal cell types and for the assembly and analysis of neural circuits. Microfluidics-based approaches are instrumental to generate the knowledge necessary for the derivation of diverse neuronal cell types from human pluripotent stem cells, as they enable the isolation and subsequent examination of individual neurons of interest. Moreover, microfluidic devices allow to engineer neural circuits with specific orientations and directionality by providing control over neuronal cell polarity and permitting the isolation of axons in individual microchannels. Similarly, the use of microfluidic chips enables the construction not only of 2D but also of 3D brain, retinal, and peripheral nervous system model circuits. Such brain-on-a-chip and organoid-on-a-chip technologies are promising platforms for studying these organs as they closely recapitulate some aspects of in vivo biological processes. Microfluidic 3D neuronal models, together with 2D in vitro systems, are widely used in many applications ranging from drug development and toxicology studies to neurological disease modeling and personalized medicine. Altogether, microfluidics provide researchers with powerful systems that complement and partially replace animal models.
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Affiliation(s)
- Rouhollah Habibey
- Department of Ophthalmology, Universitäts-Augenklinik Bonn, University of Bonn, Ernst-Abbe-Straße 2, D-53127 Bonn, Germany
| | - Jesús Eduardo Rojo Arias
- Wellcome─MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge CB2 0AW, United Kingdom
| | - Johannes Striebel
- Department of Ophthalmology, Universitäts-Augenklinik Bonn, University of Bonn, Ernst-Abbe-Straße 2, D-53127 Bonn, Germany
| | - Volker Busskamp
- Department of Ophthalmology, Universitäts-Augenklinik Bonn, University of Bonn, Ernst-Abbe-Straße 2, D-53127 Bonn, Germany
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Abstract
Electroporation (EP) is a commonly used strategy to increase cell permeability for intracellular cargo delivery or irreversible cell membrane disruption using electric fields. In recent years, EP performance has been improved by shrinking electrodes and device structures to the microscale. Integration with microfluidics has led to the design of devices performing static EP, where cells are fixed in a defined region, or continuous EP, where cells constantly pass through the device. Each device type performs superior to conventional, macroscale EP devices while providing additional advantages in precision manipulation (static EP) and increased throughput (continuous EP). Microscale EP is gentle on cells and has enabled more sensitive assaying of cells with novel applications. In this Review, we present the physical principles of microscale EP devices and examine design trends in recent years. In addition, we discuss the use of reversible and irreversible EP in the development of therapeutics and analysis of intracellular contents, among other noteworthy applications. This Review aims to inform and encourage scientists and engineers to expand the use of efficient and versatile microscale EP technologies.
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Affiliation(s)
- Sung-Eun Choi
- Department of Mechanical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Harrison Khoo
- Department of Mechanical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Soojung Claire Hur
- Department of Mechanical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
- Institute for NanoBioTechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
- Department of Oncology, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, 401 North Broadway, Baltimore, Maryland 21231, United States
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Farasat M, Aalaei E, Kheirati Ronizi S, Bakhshi A, Mirhosseini S, Zhang J, Nguyen NT, Kashaninejad N. Signal-Based Methods in Dielectrophoresis for Cell and Particle Separation. BIOSENSORS 2022; 12:510. [PMID: 35884313 PMCID: PMC9313092 DOI: 10.3390/bios12070510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
Separation and detection of cells and particles in a suspension are essential for various applications, including biomedical investigations and clinical diagnostics. Microfluidics realizes the miniaturization of analytical devices by controlling the motion of a small volume of fluids in microchannels and microchambers. Accordingly, microfluidic devices have been widely used in particle/cell manipulation processes. Different microfluidic methods for particle separation include dielectrophoretic, magnetic, optical, acoustic, hydrodynamic, and chemical techniques. Dielectrophoresis (DEP) is a method for manipulating polarizable particles' trajectories in non-uniform electric fields using unique dielectric characteristics. It provides several advantages for dealing with neutral bioparticles owing to its sensitivity, selectivity, and noninvasive nature. This review provides a detailed study on the signal-based DEP methods that use the applied signal parameters, including frequency, amplitude, phase, and shape for cell/particle separation and manipulation. Rather than employing complex channels or time-consuming fabrication procedures, these methods realize sorting and detecting the cells/particles by modifying the signal parameters while using a relatively simple device. In addition, these methods can significantly impact clinical diagnostics by making low-cost and rapid separation possible. We conclude the review by discussing the technical and biological challenges of DEP techniques and providing future perspectives in this field.
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Affiliation(s)
- Malihe Farasat
- School of Electrical and Computer Engineering, College of Engineering, Tehran University, Tehran 14399-57131, Iran; (M.F.); (A.B.); (S.M.)
| | - Ehsan Aalaei
- School of Mechanical Engineering, Shiraz University, Shiraz 71936-16548, Iran; (E.A.); (S.K.R.)
| | - Saeed Kheirati Ronizi
- School of Mechanical Engineering, Shiraz University, Shiraz 71936-16548, Iran; (E.A.); (S.K.R.)
| | - Atin Bakhshi
- School of Electrical and Computer Engineering, College of Engineering, Tehran University, Tehran 14399-57131, Iran; (M.F.); (A.B.); (S.M.)
| | - Shaghayegh Mirhosseini
- School of Electrical and Computer Engineering, College of Engineering, Tehran University, Tehran 14399-57131, Iran; (M.F.); (A.B.); (S.M.)
| | - Jun Zhang
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (J.Z.); (N.-T.N.)
| | - Nam-Trung Nguyen
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (J.Z.); (N.-T.N.)
| | - Navid Kashaninejad
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (J.Z.); (N.-T.N.)
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32
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Cai S, Ma Z, Ge Z, Yang W. Recent advances in optically induced di-electrophoresis and its biomedical applications. Biomed Microdevices 2022; 24:22. [PMID: 35689721 DOI: 10.1007/s10544-022-00620-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2022] [Indexed: 11/02/2022]
Abstract
The development of the micro/nano science and technology has promoted the evolvement of human civilization tremendously. The advancement of the micro/nano science and technology highly depends on the progress of the micro/nano manipulation techniques, and the micro/nano-scaled manipulation level is the critical sign of the micro/nano science and technology. This review, aimed at the demand and the challenge of the micro/nano material and biomedical fields and related to the scientific issues and implementation techniques of the optically induced di-electrophoresis (ODEP). We explained its working principle, manipulating method, and influencing factors of ODEP force to a certain extent. A number of application fields based-ODEP technology and specific applications so far are summarized and reviewed. Finally, some perspectives are provided on current development trends, future research directions, and challenges of ODEP.
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Affiliation(s)
- Shuxiang Cai
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai, 264005, China
| | - Zheng Ma
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai, 264005, China
| | - Zhixing Ge
- State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Wenguang Yang
- School of Electromechanical and Automotive Engineering, Yantai University, Yantai, 264005, China.
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Atay A, Beşkök A, Çetin B. DC‐electrokinetic motion of colloidal cylinder(s) in the vicinity of a conducting wall. Electrophoresis 2022; 43:1263-1274. [DOI: 10.1002/elps.202100266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/03/2022] [Accepted: 01/21/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Atakan Atay
- Microfluidics & Lab‐on‐a‐chip Research Group Mechanical Engineering Department Bilkent University Ankara Turkey
- UNAM – National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology Bilkent University Ankara Turkey
| | - Ali Beşkök
- Lyle School of Engineering Southern Methodist University Dallas Texas USA
| | - Barbaros Çetin
- Microfluidics & Lab‐on‐a‐chip Research Group Mechanical Engineering Department Bilkent University Ankara Turkey
- UNAM – National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology Bilkent University Ankara Turkey
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34
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Péter B, Farkas E, Kurunczi S, Szittner Z, Bősze S, Ramsden JJ, Szekacs I, Horvath R. Review of Label-Free Monitoring of Bacteria: From Challenging Practical Applications to Basic Research Perspectives. BIOSENSORS 2022; 12:bios12040188. [PMID: 35448248 PMCID: PMC9026780 DOI: 10.3390/bios12040188] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 05/10/2023]
Abstract
Novel biosensors already provide a fast way to detect the adhesion of whole bacteria (or parts of them), biofilm formation, and the effect of antibiotics. Moreover, the detection sensitivities of recent sensor technologies are large enough to investigate molecular-scale biological processes. Usually, these measurements can be performed in real time without using labeling. Despite these excellent capabilities summarized in the present work, the application of novel, label-free sensor technologies in basic biological research is still rare; the literature is dominated by heuristic work, mostly monitoring the presence and amount of a given analyte. The aims of this review are (i) to give an overview of the present status of label-free biosensors in bacteria monitoring, and (ii) to summarize potential novel directions with biological relevancies to initiate future development. Optical, mechanical, and electrical sensing technologies are all discussed with their detailed capabilities in bacteria monitoring. In order to review potential future applications of the outlined techniques in bacteria research, we summarize the most important kinetic processes relevant to the adhesion and survival of bacterial cells. These processes are potential targets of kinetic investigations employing modern label-free technologies in order to reveal new fundamental aspects. Resistance to antibacterials and to other antimicrobial agents, the most important biological mechanisms in bacterial adhesion and strategies to control adhesion, as well as bacteria-mammalian host cell interactions are all discussed with key relevancies to the future development and applications of biosensors.
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Affiliation(s)
- Beatrix Péter
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
- Correspondence: (B.P.); (R.H.)
| | - Eniko Farkas
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Sandor Kurunczi
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Zoltán Szittner
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Institute of Chemistry, Eötvös Loránd University, 1120 Budapest, Hungary;
- National Public Health Center, 1097 Budapest, Hungary
| | - Jeremy J. Ramsden
- Clore Laboratory, Department of Biomedical Research, University of Buckingham, Buckingham MK18 1AD, UK;
| | - Inna Szekacs
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
| | - Robert Horvath
- Nanobiosensorics Laboratory, Centre for Energy Research, Institute of Technical Physics and Materials Science, 1121 Budapest, Hungary; (E.F.); (S.K.); (Z.S.); (I.S.)
- Correspondence: (B.P.); (R.H.)
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Alias AB, Mishra S, Pendharkar G, Chen CS, Liu CH, Liu YJ, Yao DJ. Microfluidic Microalgae System: A Review. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27061910. [PMID: 35335274 PMCID: PMC8954360 DOI: 10.3390/molecules27061910] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/07/2022] [Accepted: 03/09/2022] [Indexed: 01/14/2023]
Abstract
Microalgae that have recently captivated interest worldwide are a great source of renewable, sustainable and economical biofuels. The extensive potential application in the renewable energy, biopharmaceutical and nutraceutical industries have made them necessary resources for green energy. Microalgae can substitute liquid fossil fuels based on cost, renewability and environmental concern. Microfluidic-based systems outperform their competitors by executing many functions, such as sorting and analysing small volumes of samples (nanolitre to picolitre) with better sensitivities. In this review, we consider the developing uses of microfluidic technology on microalgal processes such as cell sorting, cultivation, harvesting and applications in biofuels and biosensing.
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Affiliation(s)
- Anand Baby Alias
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (A.B.A.); (S.M.); (C.-H.L.)
| | - Shubhanvit Mishra
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (A.B.A.); (S.M.); (C.-H.L.)
| | - Gaurav Pendharkar
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Chi-Shuo Chen
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Cheng-Hsien Liu
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (A.B.A.); (S.M.); (C.-H.L.)
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Yi-Ju Liu
- Food Industry Research and Development Institute, Hsinchu 300193, Taiwan;
| | - Da-Jeng Yao
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (A.B.A.); (S.M.); (C.-H.L.)
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan;
- Correspondence:
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36
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Ashaju A, Wood JA, Lammertink RGH. Electrocatalytic Reaction Induced Colloidal Accumulation: The Role of Dielectrophoresis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3040-3050. [PMID: 35230108 PMCID: PMC8928468 DOI: 10.1021/acs.langmuir.1c01938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 02/15/2022] [Indexed: 06/14/2023]
Abstract
A surface-driven flow is generated during the electrocatalytic reaction of a platinum-gold bielectrode within hydrogen peroxide. This flow can be experimentally visualized and quantified using micrometer-sized particles that are transported by a flow field. Tracer particles, which possess an inherent surface charge, also interact with the induced electric field and exhibit a collective behavior at the surface of the electrodes where they accumulate. The underlying mechanism for the accumulation dynamics demonstrated by these catalytic pump systems has so far been lacking. In this work, the accumulation dynamics and kinetics were experimentally investigated. With use of numerical simulations, we demonstrate that the self-driven particle accumulation is controlled by a positive dielectrophoretic force, mediated by the reaction-induced electric and flow field. These results contribute to the fundamental knowledge on immobilized bimetallic systems.
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Dai Y, Cha H, Simmonds MJ, Fallahi H, An H, Ta HT, Nguyen NT, Zhang J, McNamee AP. Enhanced Blood Plasma Extraction Utilising Viscoelastic Effects in a Serpentine Microchannel. BIOSENSORS 2022; 12:bios12020120. [PMID: 35200380 PMCID: PMC8869685 DOI: 10.3390/bios12020120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 12/19/2022]
Abstract
Plasma extraction from blood is essential for diagnosis of many diseases. The critical process of plasma extraction requires removal of blood cells from whole blood. Fluid viscoelasticity promotes cell migration towards the central axis of flow due to differences in normal stress and physical properties of cells. We investigated the effects of altering fluid viscoelasticity on blood plasma extraction in a serpentine microchannel. Poly (ethylene oxide) (PEO) was dissolved into blood to increase its viscoelasticity. The influences of PEO concentration, blood dilution, and flow rate on the performance of cell focusing were examined. We found that focusing performance can be significantly enhanced by adding PEO into blood. The optimal PEO concentration ranged from 100 to 200 ppm with respect to effective blood cell focusing. An optimal flow rate from 1 to 15 µL/min was determined, at least for our experimental setup. Given less than 1% haemolysis was detected at the outlets in all experimental combinations, the proposed microfluidic methodology appears suitable for applications sensitive to haemocompatibility.
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Affiliation(s)
- Yuchen Dai
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (Y.D.); (H.C.); (H.F.); (H.A.); (N.-T.N.)
| | - Haotian Cha
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (Y.D.); (H.C.); (H.F.); (H.A.); (N.-T.N.)
| | - Michael J. Simmonds
- Biorheology Research Laboratory, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD 4222, Australia;
| | - Hedieh Fallahi
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (Y.D.); (H.C.); (H.F.); (H.A.); (N.-T.N.)
| | - Hongjie An
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (Y.D.); (H.C.); (H.F.); (H.A.); (N.-T.N.)
| | - Hang T. Ta
- School of Environment and Science, Griffith University, Nathan, QLD 4111, Australia;
| | - Nam-Trung Nguyen
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (Y.D.); (H.C.); (H.F.); (H.A.); (N.-T.N.)
| | - Jun Zhang
- Queensland Micro-Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia; (Y.D.); (H.C.); (H.F.); (H.A.); (N.-T.N.)
- Correspondence: (J.Z.); (A.P.M.)
| | - Antony P. McNamee
- Biorheology Research Laboratory, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD 4222, Australia;
- Correspondence: (J.Z.); (A.P.M.)
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38
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Cha H, Fallahi H, Dai Y, Yuan D, An H, Nguyen NT, Zhang J. Multiphysics microfluidics for cell manipulation and separation: a review. LAB ON A CHIP 2022; 22:423-444. [PMID: 35048916 DOI: 10.1039/d1lc00869b] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Multiphysics microfluidics, which combines multiple functional physical processes in a microfluidics platform, is an emerging research area that has attracted increasing interest for diverse biomedical applications. Multiphysics microfluidics is expected to overcome the limitations of individual physical phenomena through combining their advantages. Furthermore, multiphysics microfluidics is superior for cell manipulation due to its high precision, better sensitivity, real-time tunability, and multi-target sorting capabilities. These exciting features motivate us to review this state-of-the-art field and reassess the feasibility of coupling multiple physical processes. To confine the scope of this paper, we mainly focus on five common forces in microfluidics: inertial lift, elastic, dielectrophoresis (DEP), magnetophoresis (MP), and acoustic forces. This review first explains the working mechanisms of single physical phenomena. Next, we classify multiphysics techniques in terms of cascaded connections and physical coupling, and we elaborate on combinations of designs and working mechanisms in systems reported in the literature to date. Finally, we discuss the possibility of combining multiple physical processes and associated design schemes and propose several promising future directions.
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Affiliation(s)
- Haotian Cha
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Hedieh Fallahi
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Yuchen Dai
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Dan Yuan
- Centre for Regional and Rural Futures, Deakin University, Geelong, Victoria 3216, Australia
| | - Hongjie An
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Nam-Trung Nguyen
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
| | - Jun Zhang
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia.
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39
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Khan M, Chen X. Numerical study of dielectrophoresis-modified inertial migration for overlapping sized cell separation. Electrophoresis 2022; 43:879-891. [PMID: 35015306 DOI: 10.1002/elps.202100187] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 12/21/2021] [Accepted: 01/03/2022] [Indexed: 01/30/2023]
Abstract
Circulating tumor cells (CTCs) have been proven to have significant prognostic, diagnostic, and clinical values in early-stage cancer detection and treatment. The efficient separation of CTCs from peripheral blood can ensure intact and viable CTCs and can, thus, give proper genetic characterization and drug innovation. In this study, continuous and high-throughput separation of MDA-231 CTCs from overlapping sized white blood cells (WBCs) is achieved by modifying inertial cell focusing with dielectrophoresis (DEP) in a single-stage microfluidic platform by numeric simulation. The DEP is enabled by embedding interdigitated electrodes with alternating field control on a serpentine microchannel to avoid creating two-stage separation. Rather than using the electrokinetic migration of cells which slows down the throughput, the system leverages the inertial microfluidic flow to achieve high-speed continuous separation. The cell migration and cell positioning characteristics are quantified through coupled physics analyses to evaluate the effects of the applied voltages and Reynolds numbers (Re) on the separation performance. The results indicate that the introduction of DEP successfully migrates WBCs away from CTCs and that separation of MDA-231 CTCs from similar sized WBCs at a high Re of 100 can be achieved with a low voltage of magnitude 4 ×106 V/m. Additionally, the viability of MDA-231 CTCs is expected to be sustained after separation due to the short-term DEP exposure. The developed technique could be exploited to design active microchips for high-throughput separation of mixed cell beads despite their significant size overlap, using DEP-modified inertial focusing controlled simply by adjusting the applied external field.
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Affiliation(s)
- Mohammed Khan
- School of Engineering and Computer Science, Washington State University, Vancouver, WA
| | - Xiaolin Chen
- School of Engineering and Computer Science, Washington State University, Vancouver, WA
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40
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Saxena A, Tsakonas C, Chappell D, Cheung CS, Edwards AMJ, Liang H, Sage IC, Brown CV. Static and Dynamic Optical Analysis of Micro Wrinkle Formation on a Liquid Surface. MICROMACHINES 2021; 12:mi12121583. [PMID: 34945433 PMCID: PMC8704472 DOI: 10.3390/mi12121583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 11/16/2022]
Abstract
A spatially periodic voltage was used to create a dielectrophoresis induced periodic micro wrinkle deformation on the surface of a liquid film. Optical Coherence Tomography provided the equilibrium wrinkle profile at submicron accuracy. The dynamic wrinkle amplitude was derived from optical diffraction analysis during sub-millisecond wrinkle formation and decay, after abruptly increasing or reducing the voltage, respectively. The decay time constant closely followed the film thickness dependence expected for surface tension driven viscous levelling. Modelling of the system using numerical solution of the Stokes flow equations with electrostatic forcing predicted that wrinkle formation was faster than decay, in accord with observations.
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Affiliation(s)
- Antariksh Saxena
- SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (A.S.); (C.T.); (D.C.); (A.M.J.E.); (I.C.S.)
| | - Costas Tsakonas
- SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (A.S.); (C.T.); (D.C.); (A.M.J.E.); (I.C.S.)
| | - David Chappell
- SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (A.S.); (C.T.); (D.C.); (A.M.J.E.); (I.C.S.)
| | - Chi Shing Cheung
- Imaging & Sensing for Archaeology, Art History & Conservation (ISAAC) Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (C.S.C.); (H.L.)
| | - Andrew Michael John Edwards
- SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (A.S.); (C.T.); (D.C.); (A.M.J.E.); (I.C.S.)
| | - Haida Liang
- Imaging & Sensing for Archaeology, Art History & Conservation (ISAAC) Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (C.S.C.); (H.L.)
| | - Ian Charles Sage
- SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (A.S.); (C.T.); (D.C.); (A.M.J.E.); (I.C.S.)
| | - Carl Vernon Brown
- SOFT Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK; (A.S.); (C.T.); (D.C.); (A.M.J.E.); (I.C.S.)
- Correspondence:
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41
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Zhu P, Wang L. Microfluidics-Enabled Soft Manufacture of Materials with Tailorable Wettability. Chem Rev 2021; 122:7010-7060. [PMID: 34918913 DOI: 10.1021/acs.chemrev.1c00530] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Microfluidics and wettability are interrelated and mutually reinforcing fields, experiencing synergistic growth. Surface wettability is paramount in regulating microfluidic flows for processing and manipulating fluids at the microscale. Microfluidics, in turn, has emerged as a versatile platform for tailoring the wettability of materials. We present a critical review on the microfluidics-enabled soft manufacture (MESM) of materials with well-controlled wettability and their multidisciplinary applications. Microfluidics provides a variety of liquid templates for engineering materials with exquisite composition and morphology, laying the foundation for precisely controlling the wettability. Depending on the degree of ordering, liquid templates are divided into individual droplets, one-dimensional (1D) arrays, and two-dimensional (2D) or three-dimensional (3D) assemblies for the modular fabrication of microparticles, microfibers, and monolithic porous materials, respectively. Future exploration of MESM will enrich the diversity of chemical composition and physical structure for wettability control and thus markedly broaden the application horizons across engineering, physics, chemistry, biology, and medicine. This review aims to systematize this emerging yet robust technology, with the hope of aiding the realization of its full potential.
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Affiliation(s)
- Pingan Zhu
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
| | - Liqiu Wang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
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42
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Duncan JL, Davalos RV. A review: Dielectrophoresis for characterizing and separating similar cell subpopulations based on bioelectric property changes due to disease progression and therapy assessment. Electrophoresis 2021; 42:2423-2444. [PMID: 34609740 DOI: 10.1002/elps.202100135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/19/2021] [Accepted: 09/23/2021] [Indexed: 12/16/2022]
Abstract
This paper reviews the use of dielectrophoresis for high-fidelity separations and characterizations of subpopulations to highlight the recent advances in the electrokinetic field as well as provide insight into its progress toward commercialization. The role of cell subpopulations in heterogeneous clinical samples has been studied to deduce their role in disease progression and therapy resistance for instances such as cancer, tissue regeneration, and bacterial infection. Dielectrophoresis (DEP), a label-free electrokinetic technique, has been used to characterize and separate target subpopulations from mixed samples to determine disease severity, cell stemness, and drug efficacy. Despite its high sensitivity to characterize similar or related cells based on their differing bioelectric signatures, DEP has been slowly adopted both commercially and clinically. This review addresses the use of dielectrophoresis for the identification of target cell subtypes in stem cells, cancer cells, blood cells, and bacterial cells dependent on cell state and therapy exposure and addresses commercialization efforts in light of its sensitivity and future perspectives of the technology, both commercially and academically.
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Affiliation(s)
- Josie L Duncan
- Bioelectromechanical Systems Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia, USA.,Bioelectromechanical Systems Laboratory, Wake Forest School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, USA
| | - Rafael V Davalos
- Bioelectromechanical Systems Laboratory, Department of Mechanical Engineering, Virginia Tech, Blacksburg, Virginia, USA.,Bioelectromechanical Systems Laboratory, Wake Forest School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia, USA
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43
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Khatib WA, Ayari A, Yasir AT, Talhami M, Das P, Quadir MA, Hawari AH. Enhancing the electrocoagulation process for harvesting marine microalgae (Tetraselmis sp.) using interdigitated electrodes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112761. [PMID: 33975268 DOI: 10.1016/j.jenvman.2021.112761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 06/12/2023]
Abstract
Marketable value of algal biomass has been increasing in recent years due to its wide range of applications. This study investigates the performance of a novel cylindrical interdigitated electrode array in electrocoagulation for the harvesting of marine microalgae (Tetraselmis sp.). The new electrode array is expected to exert a dielectrophoretic (DEP) force which would assist in the harvesting of the microalgae in the electrocoagulation process. Through numerical investigation, the induction of dielectrophoretic force was confirmed in the new electrode array. In this study, 10 min electrolysis time was found to be sufficient to harvest 82.4% microalgae with 1 cm electrode distance and 50 mA/cm2 current density. Furthermore, decreasing the electrode distance to 0.5 cm increased the algal harvesting efficiency to 96.18%. Energy analysis showed that the proposed electrode array shows 38% lower specific energy consumption than the conventional flat sheet electrode array.
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Affiliation(s)
- Wardan A Khatib
- Department of Civil and Architectural Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Arslan Ayari
- Department of Civil and Architectural Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Ahmed T Yasir
- Department of Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Mohammed Talhami
- Department of Civil and Architectural Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Probir Das
- Algal Technologies Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - M A Quadir
- Algal Technologies Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Alaa H Hawari
- Department of Civil and Architectural Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.
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44
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Ghadiri MM, Hosseini SA, Sadatsakkak SA, Rajabpour A. Inertial microfluidics: Determining the effect of geometric key parameters on capture efficiency along with a feasibility evaluation for bone marrow cells sorting. Biomed Microdevices 2021; 23:41. [PMID: 34379212 DOI: 10.1007/s10544-021-00577-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
Abstract
Despite great developments in inertial microfluidics, there is still a lack of knowledge to precisely define the particles' behavior in the microchannels. In the present study, as a prerequisite to experimental studies, numerical simulations have been used to study the capture efficiency of target particles in the contraction-expansion microchannel, aiming to provide an estimation of the conditions at which the channel performs best. Fluid analysis based on Navier-Stokes equations is conducted using the finite element method to determine the streamlines and vortices. The highest capture efficiency for 10, 15, and 19-micron particles occurs when the center of the vortex is approximately in the middle of the wide section (at the flow rate of 0.35 ml/min). In addition to investigating the effect of particle diameter and input flow rate, the effect of channel geometry parameters (channel height and initial length of the channel) on particle trapping has also been studied. Also, to consider great interest in separating different-sized bioparticles from a sample, a three-stage platform has been designed to separate four types of bone marrow cells and evaluate the possibility of using contraction-expansion channels in this application.
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Affiliation(s)
- Mohammad Mahdi Ghadiri
- Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran
| | - Seied Ali Hosseini
- Department of Electrical Engineering, Imam Khomeini International University, Qazvin, Iran.
| | | | - Ali Rajabpour
- Department of Mechanical Engineering, Imam Khomeini International University, Qazvin, Iran
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45
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Demircan Yalçın Y, Töral TB, Sukas S, Yıldırım E, Zorlu Ö, Gündüz U, Külah H. A microfluidic device enabling drug resistance analysis of leukemia cells via coupled dielectrophoretic detection and impedimetric counting. Sci Rep 2021; 11:13193. [PMID: 34162990 PMCID: PMC8222334 DOI: 10.1038/s41598-021-92647-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/14/2021] [Indexed: 12/02/2022] Open
Abstract
We report the development of a lab-on-a-chip system, that facilitates coupled dielectrophoretic detection (DEP-D) and impedimetric counting (IM-C), for investigating drug resistance in K562 and CCRF-CEM leukemia cells without (immuno) labeling. Two IM-C units were placed upstream and downstream of the DEP-D unit for enumeration, respectively, before and after the cells were treated in DEP-D unit, where the difference in cell count gave the total number of trapped cells based on their DEP characteristics. Conductivity of the running buffer was matched the conductivity of cytoplasm of wild type K562 and CCRF-CEM cells. Results showed that DEP responses of drug resistant and wild type K562 cells were statistically discriminative (at p = 0.05 level) at 200 mS/m buffer conductivity and at 8.6 MHz working frequency of DEP-D unit. For CCRF-CEM cells, conductivity and frequency values were 160 mS/m and 6.2 MHz, respectively. Our approach enabled discrimination of resistant cells in a group by setting up a threshold provided by the conductivity of running buffer. Subsequent selection of drug resistant cells can be applied to investigate variations in gene expressions and occurrence of mutations related to drug resistance.
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Affiliation(s)
- Yağmur Demircan Yalçın
- Electrical and Electronics Engineering Department, Middle East Technical University, Ankara, Turkey. .,Mikro Biyosistemler A.Ş., Ankara, Turkey. .,Neuro-Nanoscale Engineering, Mechanical Engineering Department, Eindhoven University of Technology, Eindhoven, The Netherlands.
| | | | - Sertan Sukas
- Mikro Biyosistemler A.Ş., Ankara, Turkey.,Mechanical Engineering Department, Microsystems Section, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Ender Yıldırım
- Mikro Biyosistemler A.Ş., Ankara, Turkey.,Mechanical Engineering Department, Middle East Technical University, Ankara, Turkey
| | - Özge Zorlu
- Mikro Biyosistemler A.Ş., Ankara, Turkey
| | - Ufuk Gündüz
- Biology Department, Middle East Technical University, Ankara, Turkey
| | - Haluk Külah
- Electrical and Electronics Engineering Department, Middle East Technical University, Ankara, Turkey.,Mikro Biyosistemler A.Ş., Ankara, Turkey.,METU MEMS Center, Ankara, Turkey
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46
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Shen S, Yi Z, Li X, Xie S, Jin M, Zhou G, Yan Z, Shui L. Flow-Field-Assisted Dielectrophoretic Microchips for High-Efficiency Sheathless Particle/Cell Separation with Dual Mode. Anal Chem 2021; 93:7606-7615. [PMID: 34003009 DOI: 10.1021/acs.analchem.1c00018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Prefocusing of cell mixtures through sheath flow is a common technique used for continuous and high-efficiency dielectrophoretic (DEP) cell separation. However, it usually limits the separation flow velocity and requires a complex multichannel fluid control system that hinders the integration of a DEP separator with other microfluidic functionalities for comprehensive biomedical applications. Here, we propose and develop a high-efficiency, sheathless particle/cell separation method without prefocusing based on flow-field-assisted DEP by combining the effects of AC electric field (E-field) and flow field (F-field). A hollow lemon-shaped electrode array is designed to generate a long-range E-field gradient in the microchannel, which can effectively induce lateral displacements of particles/cells in a continuous flow. A series of arc-shaped protrusion structures is designed along the microchannel to form a F-field, which can effectively guide the particles/cells toward the targeted E-field region without prefocusing. By tuning the E-field, two distinct modes can be realized and switched in one single device, including the sheathless separation (ShLS) and the adjustable particle mixing ratio (AMR) modes. In the ShLS mode, we have achieved the continuous separation of breast cancer cells from erythrocytes with a recovery rate of 95.5% and the separation of polystyrene particles from yeast cells with a purity of 97.1% at flow velocities over 2.59 mm/s in a 2 cm channel under optimized conditions. The AMR mode provides a strategy for controlling the mixing ratio of different particles/cells as a well-defined pretreatment method for biomedical research studies. The proposed microchip is easy to use and displays high versatility for biological and medical applications.
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Affiliation(s)
- Shitao Shen
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Zichuan Yi
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China.,College of Electron and Information, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China
| | - Xing Li
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Shuting Xie
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Mingliang Jin
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Guofu Zhou
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Zhibin Yan
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
| | - Lingling Shui
- International Joint Laboratory of Optofluidic Technology and System, National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics and School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
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47
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Xuan X. Review of nonlinear electrokinetic flows in insulator-based dielectrophoresis: From induced charge to Joule heating effects. Electrophoresis 2021; 43:167-189. [PMID: 33991344 DOI: 10.1002/elps.202100090] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/08/2021] [Accepted: 05/11/2021] [Indexed: 01/03/2023]
Abstract
Insulator-based dielectrophoresis (iDEP) has been increasingly used for particle manipulation in various microfluidic applications. It exploits insulating structures to constrict and/or curve electric field lines to generate field gradients for particle dielectrophoresis. However, the presence of these insulators, especially those with sharp edges, causes two nonlinear electrokinetic flows, which, if sufficiently strong, may disturb the otherwise linear electrokinetic motion of particles and affect the iDEP performance. One is induced charge electroosmotic (ICEO) flow because of the polarization of the insulators, and the other is electrothermal flow because of the amplified Joule heating in the fluid around the insulators. Both flows vary nonlinearly with the applied electric field (either DC or AC) and exhibit in the form of fluid vortices, which have been utilized to promote some applications while being suppressed in others. The effectiveness of iDEP benefits from a comprehensive understanding of the nonlinear electrokinetic flows, which is complicated by the involvement of the entire iDEP device into electric polarization and thermal diffusion. This article is aimed to review the works on both the fundamentals and applications of ICEO and electrothermal flows in iDEP microdevices. A personal perspective of some future research directions in the field is also given.
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Affiliation(s)
- Xiangchun Xuan
- Department of Mechanical Engineering, Clemson University, Clemson, South Carolina, USA
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48
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Patel K, Stark H. A pair of particles in inertial microfluidics: effect of shape, softness, and position. SOFT MATTER 2021; 17:4804-4817. [PMID: 33871511 DOI: 10.1039/d1sm00276g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lab-on-a-chip devices based on inertial microfluidics have emerged as a promising technique to manipulate particles in a precise way. Inertial microfluidics exploits internal hydrodynamic forces and the mechanical structure of particles to achieve separation and focusing. The article focuses on the hydrodynamic interaction of two particles. This will help to develop an understanding of the dynamics of particle trains in inertial microfluidics, which are typical structures in multi-particle systems. We perform three-dimensional lattice Boltzmann simulations combined with the immersed boundary method to unravel the dynamics of various mono- and bi-dispersed pairs in inertial microfluidics. We study the influence of different starting positions for mono- and bi-dispersed pairs. We also change their deformability from relatively soft to rigid and choose spherical and biconcave particle shapes. The observed two-particle motions in the present work can be categorized into four types: stable pair, stable pair with damped oscillations, stable pair with bounded oscillations, and unstable pair. We show that stable pairs become unstable when increasing the particle stiffness. Furthermore, a pair with both capsules in the same channel half is more prone to become unstable than a pair with capsules in opposite channel halves.
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Affiliation(s)
- Kuntal Patel
- Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
| | - Holger Stark
- Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany.
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49
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Sambrano J, Rodriguez F, Martin J, Houston JP. Toward the Development of an On-Chip Acoustic Focusing Fluorescence Lifetime Flow Cytometer. FRONTIERS IN PHYSICS 2021; 9:647985. [PMID: 34386487 PMCID: PMC8357029 DOI: 10.3389/fphy.2021.647985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Conventional flow cytometry is a valuable quantitative tool. Flow cytometers reveal physical and biochemical information from cells at a high throughput, which is quite valuable for many biomedical, biological, and diagnostic research fields. Flow cytometers range in complexity and typically provide multiparametric data for the user at rates of up to 50,000 cells measured per second. Cytometry systems are configured such that fluorescence or scattered light signals are collected per-cell, and the integrated optical signal at a given wavelength range indicates a particular cellular feature such as phenotype or morphology. When the timing of the optical signal is measured, the cytometry system becomes "time-resolved." Time-resolved flow cytometry (TRFC) instruments can detect fluorescence decay kinetics, and such measurements are consequential for Förster Resonance Energy Transfer (FRET) studies, multiplexing, and metabolic mapping, to name a few. TRFC systems capture fluorescence lifetimes at rates of thousands of cells per-second, however the approach is challenged at this throughput by terminal cellular velocities. High flow rates limit the total number of photons integrated per-cell, reducing the reliability of the average lifetime as a cytometric parameter. In this contribution, we examine an innovative approach to address this signal-to-noise issue. The technology merges time-resolved hardware with microfluidics and acoustics. We present an "acoustofluidic" time-resolved flow cytometer so that cellular velocities can be adjusted on the fly with a standing acoustic wave (SAW). Our work shows that acoustic control can be combined with time-resolved features to appropriately balance the throughput with the optical signals necessary for lifetime data.
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Affiliation(s)
- Jesus Sambrano
- Department of Chemical and Materials Engineering, New Mexico State University, Las Cruces, NM, United States
| | - Felicia Rodriguez
- Department of Chemical and Materials Engineering, New Mexico State University, Las Cruces, NM, United States
| | - John Martin
- Tiber Plasma Diagnostics, Las Cruces, NM, United States
| | - Jessica P. Houston
- Department of Chemical and Materials Engineering, New Mexico State University, Las Cruces, NM, United States
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50
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Padhy P, Zaman MA, Jensen MA, Hesselink L. Dynamically controlled dielectrophoresis using resonant tuning. Electrophoresis 2021; 42:1079-1092. [PMID: 33599974 PMCID: PMC8122061 DOI: 10.1002/elps.202000328] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/13/2021] [Accepted: 02/02/2021] [Indexed: 12/12/2022]
Abstract
Electrically polarizable micro- and nanoparticles and droplets can be trapped using the gradient electric field of electrodes. But the spatial profile of the resultant dielectrophoretic force is fixed once the electrode structure is defined. To change the force profile, entire complex lab-on-a-chip systems must be re-fabricated with modified electrode structures. To overcome this problem, we propose an approach for the dynamic control of the spatial profile of the dielectrophoretic force by interfacing the trap electrodes with a resistor and an inductor to form a resonant resistor-inductor-capacitor (RLC) circuit. Using a dielectrophoretically trapped water droplet suspended in silicone oil, we show that the resonator amplitude, detuning, and linewidth can be continuously varied by changing the supply voltage, supply frequency, and the circuit resistance to obtain the desired trap depth, range, and stiffness. We show that by proper tuning of the resonator, the trap range can be extended without increasing the supply voltage, thus preventing sensitive samples from exposure to high electric fields at the stable trapping position. Such unprecedented dynamic control of dielectrophoretic forces opens avenues for the tunable active manipulation of sensitive biological and biochemical specimen in droplet microfluidic devices used for single-cell and biochemical reaction analysis.
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Affiliation(s)
- Punnag Padhy
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA
| | - Mohammad Asif Zaman
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA
| | | | - Lambertus Hesselink
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA
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