1
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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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2
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Deivasigamani R, Maidin NNM, Nasir NSA, Low MX, Kayani ABA, Mohamed MA, Buyong MR. A dielectrophoresis proof of concept of polystyrene particles and
in‐vitro
human epidermal keratinocytes migration for wound rejuvenation. J Appl Polym Sci 2022. [DOI: 10.1002/app.53096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Revathy Deivasigamani
- Institute of Microengineering and Nanoelectronics (IMEN) Universiti Kebangsaan Malaysia (UKM) Bangi Malaysia
| | - Nur Nasyifa Mohd Maidin
- Institute of Microengineering and Nanoelectronics (IMEN) Universiti Kebangsaan Malaysia (UKM) Bangi Malaysia
| | - Nur Shahira Abdul Nasir
- Institute of Microengineering and Nanoelectronics (IMEN) Universiti Kebangsaan Malaysia (UKM) Bangi Malaysia
| | - Mei Xian Low
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility RMIT University Melbourne Australia
- ARC Research Hub for Connected Sensors for Health RMIT University Melbourne Australia
| | - Aminuddin Bin Ahmad Kayani
- Functional Materials and Microsystems Research Group and the Micro Nano Research Facility RMIT University Melbourne Australia
- ARC Research Hub for Connected Sensors for Health RMIT University Melbourne Australia
| | - Mohd Ambri Mohamed
- Institute of Microengineering and Nanoelectronics (IMEN) Universiti Kebangsaan Malaysia (UKM) Bangi Malaysia
| | - Muhamad Ramdzan Buyong
- Institute of Microengineering and Nanoelectronics (IMEN) Universiti Kebangsaan Malaysia (UKM) Bangi Malaysia
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3
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Deivasigamani R, Maidin NNM, Wee MFMR, Mohamed MA, Buyong MR. Dielectrophoresis Prototypic Polystyrene Particle Synchronization toward Alive Keratinocyte Cells for Rapid Chronic Wound Healing. SENSORS (BASEL, SWITZERLAND) 2021; 21:3007. [PMID: 33922993 PMCID: PMC8123363 DOI: 10.3390/s21093007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/25/2021] [Accepted: 04/09/2021] [Indexed: 12/12/2022]
Abstract
Diabetes patients are at risk of having chronic wounds, which would take months to years to resolve naturally. Chronic wounds can be countered using the electrical stimulation technique (EST) by dielectrophoresis (DEP), which is label-free, highly sensitive, and selective for particle trajectory. In this study, we focus on the validation of polystyrene particles of 3.2 and 4.8 μm to predict the behavior of keratinocytes to estimate their crossover frequency (fXO) using the DEP force (FDEP) for particle manipulation. MyDEP is a piece of java-based stand-alone software used to consider the dielectric particle response to AC electric fields and analyzes the electrical properties of biological cells. The prototypic 3.2 and 4.8 μm polystyrene particles have fXO values from MyDEP of 425.02 and 275.37 kHz, respectively. Fibroblast cells were also subjected to numerical analysis because the interaction of keratinocytes and fibroblast cells is essential for wound healing. Consequently, the predicted fXO from the MyDEP plot for keratinocyte and fibroblast cells are 510.53 and 28.10 MHz, respectively. The finite element method (FEM) is utilized to compute the electric field intensity and particle trajectory based on DEP and drag forces. Moreover, the particle trajectories are quantified in a high and low conductive medium. To justify the simulation, further DEP experiments are carried out by applying a non-uniform electric field to a mixture of different sizes of polystyrene particles and keratinocyte cells, and these results are well agreed. The alive keratinocyte cells exhibit NDEP force in a highly conductive medium from 100 kHz to 25 MHz. 2D/3D motion analysis software (DIPP-MotionV) can also perform image analysis of keratinocyte cells and evaluate the average speed, acceleration, and trajectory position. The resultant NDEP force can align the keratinocyte cells in the wound site upon suitable applied frequency. Thus, MyDEP estimates the Clausius-Mossotti factors (CMF), FEM computes the cell trajectory, and the experimental results of prototypic polystyrene particles are well correlated and provide an optimistic response towards keratinocyte cells for rapid wound healing applications.
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Affiliation(s)
| | | | | | | | - Muhamad Ramdzan Buyong
- Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi 43600, Selangor, Malaysia; (R.D.); (N.N.M.M.); (M.F.M.R.W.); (M.A.M.)
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4
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Kale A, Malekanfard A, Xuan X. Analytical Guidelines for Designing Curvature-Induced Dielectrophoretic Particle Manipulation Systems. MICROMACHINES 2020; 11:E707. [PMID: 32708326 PMCID: PMC7407939 DOI: 10.3390/mi11070707] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/15/2020] [Accepted: 07/20/2020] [Indexed: 12/31/2022]
Abstract
Curvature-induced dielectrophoresis (C-iDEP) is an established method of applying electrical energy gradients across curved microchannels to obtain a label-free manipulation of particles and cells. This method offers several advantages over the other DEP-based methods, such as increased chip area utilisation, simple fabrication, reduced susceptibility to Joule heating and reduced risk of electrolysis in the active region. Although C-iDEP systems have been extensively demonstrated to achieve focusing and separation of particles, a detailed mathematical analysis of the particle dynamics has not been reported yet. This work computationally confirms a fully analytical dimensionless study of the electric field-induced particle motion inside a circular arc microchannel, the simplest design of a C-iDEP system. Specifically, the analysis reveals that the design of a circular arc microchannel geometry for manipulating particles using an applied voltage is fully determined by three dimensionless parameters. Simple equations are established and numerically confirmed to predict the mutual relationships of the parameters for a comprehensive range of their practically relevant values, while ensuring design for safety. This work aims to serve as a starting point for microfluidics engineers and researchers to have a simple calculator-based guideline to develop C-iDEP particle manipulation systems specific to their applications.
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Affiliation(s)
- Akshay Kale
- Electrical Engineering Division, CAPE Building, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK
| | - Amirreza Malekanfard
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA; (A.M.); (X.X.)
| | - Xiangchun Xuan
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634, USA; (A.M.); (X.X.)
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5
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Valiūnienė A, Petronienė J, Dulkys M, Ramanavičius A. Investigation of Active and Inactivated Yeast Cells by Scanning Electrochemical Impedance Microscopy. ELECTROANAL 2019. [DOI: 10.1002/elan.201900414] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Aušra Valiūnienė
- Department of Physical Chemistry, Faculty of Chemistry and GeosciencesVilnius University, Naugarduko 24 LT-03225 Vilnius Lithuania
| | - Jūratė Petronienė
- Department of Physical Chemistry, Faculty of Chemistry and GeosciencesVilnius University, Naugarduko 24 LT-03225 Vilnius Lithuania
| | - Mindaugas Dulkys
- Department of Physical Chemistry, Faculty of Chemistry and GeosciencesVilnius University, Naugarduko 24 LT-03225 Vilnius Lithuania
| | - Arūnas Ramanavičius
- Department of Physical Chemistry, Faculty of Chemistry and GeosciencesVilnius University, Naugarduko 24 LT-03225 Vilnius Lithuania
- Laboratory of NanotechnologyState Research Institute Center for Physical Sciences and Technology Sauletekio ave. 3 LT-10257 Vilnius Lithuania
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6
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Habibi S, Lee HY, Moncada-Hernandez H, Gooding J, Minerick AR. Impacts of low concentration surfactant on red blood cell dielectrophoretic responses. BIOMICROFLUIDICS 2019; 13:054101. [PMID: 31531153 PMCID: PMC6746619 DOI: 10.1063/1.5113735] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Cell dielectrophoretic responses have been extensively studied for biomarker expression, blood typing, sepsis, circulating tumor cell separations, and others. Surfactants are often added to the analytical buffer in electrokinetic cellular microfluidic systems to lower surface/interfacial tensions. In nonelectrokinetic systems, surfactants influence cell size, shape, and agglomeration; this has not been systematically documented in electrokinetic systems. In the present work, the impacts of the Triton X-100 surfactant on human red blood cells (RBCs) were explored via ultraviolet-visible spectroscopy (UV-Vis) and dielectrophoresis (DEP) to compare nonelectrokinetic and electrokinetic responses, respectively. The UV-Vis spectra of Triton X-100 treated RBCs were dramatically different from that of native RBCs. DEP responses of RBCs were compared to RBCs treated with low concentrations of Triton X-100 (0.07-0.17 mM) to ascertain surfactant effects on dielectric properties. A star-shaped electrode design was used to quantify RBC dielectric properties by fitting a single-shell oblate cell model to experimentally-derived DEP spectra. The presence of 0.07 and 0.11 mM of Triton X-100 shifted the RBC's DEP spectra yielding lower crossover frequencies ( f C O ) . The single-shell oblate model revealed that cell radius and membrane permittivity are the dominant influencers of DEP spectral shifts. The trends observed were similar for 0.11 mM and 0.07 mM Triton X-100 treated cells. However, a further increase of Triton X-100 to 0.17 mM caused cells to only exhibit negative DEP. The magnitude of the DEP force increased with Triton X-100 concentration. This work indicates that dynamic surfactant interactions with cell membranes alter cell dielectric responses and properties.
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7
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Yin D, Zhang X, Han X, Yang J, Hu N. Multi-Stage Particle Separation based on Microstructure Filtration and Dielectrophoresis. MICROMACHINES 2019; 10:mi10020103. [PMID: 30708953 PMCID: PMC6412275 DOI: 10.3390/mi10020103] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/27/2019] [Accepted: 01/29/2019] [Indexed: 11/16/2022]
Abstract
Particle separation is important in chemical and biomedical analysis. Among all particle separation approaches, microstructure filtration which based particles size difference has turned into one of the most commonly methods. By controlling the movement of particles, dielectrophoresis has also been widely adopted in particle separation. This work presents a microfluidic device which combines the advantages of microfilters and dielectrophoresis to separate micro-particles and cells. A three-dimensional (3D) model was developed to calculate the distributions of the electric field gradient at the two filter stages. Polystyrene particles with three different sizes were separated by micropillar array structure by applying a 35-Vpp AC voltage at 10 KHz. The blocked particles were pushed off the filters under the negative dielectrophoretic force and drag force. A mixture of Haematococcus pluvialis cells and Bracteacoccus engadinensis cells with different sizes were also successfully separated by this device, which proved that the device can separate both biological samples and polystyrene particles.
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Affiliation(s)
- Danfen Yin
- Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
| | - Xiaoling Zhang
- Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
| | - Xianwei Han
- Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
| | - Jun Yang
- Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
| | - Ning Hu
- Key Laboratory of Biorheological Science and Technology, Chongqing University, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
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8
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Tian L, Zhang L, Gao M, Deng Z, Gui L. A Handy Liquid Metal Based Non-Invasive Electrophoretic Particle Microtrap. MICROMACHINES 2018; 9:mi9050221. [PMID: 30424154 PMCID: PMC6187542 DOI: 10.3390/mi9050221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 05/03/2018] [Accepted: 05/05/2018] [Indexed: 06/09/2023]
Abstract
A handy liquid metal based non-invasive particle microtrap was proposed and demonstrated in this work. This kind of microtrap can be easily designed and fabricated at any location of a microfluidic chip to perform precise particle trapping and releasing without disturbing the microchannel itself. The microsystem demonstrated in this work utilized silicon oil as the continuous phase and fluorescent particles (PE-Cy5, SPHEROTM Fluorescent Particles, BioLegend, San Diego, CA, USA, 10.5 μm) as the target particles. To perform the particle trapping, the micro system utilized liquid-metal-filled microchannels as noncontact electrodes to generate different patterns of electric field inside the fluid channel. According to the experimental results, the target particle can be selectively trapped and released by switching the electric field patterns. For a better understanding the control mechanism, a numerical simulation of the electric field was performed to explain the trapping mechanism. In order to verify the model, additional experiments were performed and are discussed.
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Affiliation(s)
- Lu Tian
- Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100039, China.
| | - Lunjia Zhang
- Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100039, China.
| | - Meng Gao
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100039, China.
| | - Zhongshan Deng
- Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100039, China.
| | - Lin Gui
- Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- University of Chinese Academy of Sciences, 19 Yuquan Road, Shijingshan District, Beijing 100039, China.
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9
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Kale A, Patel S, Xuan X. Three-Dimensional Reservoir-Based Dielectrophoresis (rDEP) for Enhanced Particle Enrichment. MICROMACHINES 2018; 9:E123. [PMID: 30424057 PMCID: PMC6187384 DOI: 10.3390/mi9030123] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/24/2018] [Accepted: 03/09/2018] [Indexed: 01/01/2023]
Abstract
Selective enrichment of target species is crucial for a wide variety of engineering systems for improved performance of subsequent processes. Dielectrophoresis (DEP) is a powerful electrokinetic method that can be used to focus, trap, concentrate, and separate a variety of species in a label-free manner. The commonly employed methods for DEP suffer from limitations such as electrode fouling and high susceptibility to Joule heating effects. Recently, our group has demonstrated DEP-based manipulations of particles and cells using a novel method of reservoir-based dielectrophoresis (rDEP) which exploits the naturally produced electric field gradients at the reservoir-microchannel junction. Although this method reasonably addresses the limitations mentioned above while maintaining a high simplicity of fabrication, all of our demonstrations so far have used a two-dimensional rDEP, which limits the performance of the devices. This work aims to improve their performance further by making the DEP three-dimensional. Through detailed experimental and numerical analysis, we demonstrate a six-fold increase in the enrichment performance of latex beads and a significant reduction in the power consumption for the new devices, which would allow a more reliable integration of the same into micro-total analysis systems.
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Affiliation(s)
- Akshay Kale
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA.
- Department of Chemical Engineering & Biotechnology, University of Cambridge, Cambridge CB3 0AS, UK.
| | - Saurin Patel
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA.
| | - Xiangchun Xuan
- Department of Mechanical Engineering, Clemson University, Clemson, SC 29634-0921, USA.
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10
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Yan S, Li Y, Zhao Q, Yuan D, Yun G, Tang SY, Li W. Enhanced particle self-ordering in a double-layer channel. Biomed Microdevices 2018; 20:23. [PMID: 29476424 DOI: 10.1007/s10544-018-0269-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this work, a novel double-layer microfluidic device for enhancing particle focusing was presented. The double-layer device consists of a channel with expansion-contraction array and periodical slanted grooves. The secondary flows induced by the grooves modulate the flow patterns in the expansion-contraction-array (ECA) channel, further affecting the particle migration. Compared with the single ECA channel, the double-layer channel can focus the particles over a wider range of flow rate. Due to the differentiation of lateral migration, the double-layer channel is able to distinguish the particles with different sizes. Furthermore, the equilibrium positions could be modulated by the orientation of grooves. This work demonstrates the possibility to enhance and adjust the inertial focusing in an ECA channel with the assistance of grooves, which may provide a simple and portable platform for downstream filtration, separation, and detection.
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Affiliation(s)
- Sheng Yan
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Yuxing Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Qianbin Zhao
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Dan Yuan
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Guolin Yun
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Shi-Yang Tang
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Weihua Li
- School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW, 2522, Australia.
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11
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Rabbani M, Schmidt CF, Ros A. Single-Walled Carbon Nanotubes Probed with Insulator-Based Dielectrophoresis. Anal Chem 2017; 89:13235-13244. [PMID: 29131586 PMCID: PMC5749884 DOI: 10.1021/acs.analchem.7b03105] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 11/13/2017] [Indexed: 01/28/2023]
Abstract
Single-walled carbon nanotubes (SWNTs) offer unique electrical and optical properties. Common synthesis processes yield SWNTs with large length polydispersity (several tens of nanometers up to centimeters) and heterogeneous electrical and optical properties. Applications often require suitable selection and purification. Dielectrophoresis is one manipulation method for separating SWNTs based on dielectric properties and geometry. Here, we present a study of surfactant and single-stranded DNA-wrapped SWNTs suspended in aqueous solutions manipulated by insulator-based dielectrophoresis (iDEP). This method allows us to manipulate SWNTs with the help of arrays of insulating posts in a microfluidic device around which electric field gradients are created by the application of an electric potential to the extremities of the device. Semiconducting SWNTs were imaged during dielectrophoretic manipulation with fluorescence microscopy making use of their fluorescence emission in the near IR. We demonstrate SWNT trapping at low-frequency alternating current (AC) electric fields with applied potentials not exceeding 1000 V. Interestingly, suspended SWNTs showed both positive and negative dielectrophoresis, which we attribute to their ζ potential and the suspension properties. Such behavior agrees with common theoretical models for nanoparticle dielectrophoresis. We further show that the measured ζ potentials and suspension properties are in excellent agreement with a numerical model predicting the trapping locations in the iDEP device. This study is fundamental for the future application of low-frequency AC iDEP for technological applications of SWNTs.
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Affiliation(s)
- Mohammad
Towshif Rabbani
- Third
Institute of Physics−Biophysics, Department of Physics, University of Göttingen, 37077 Göttingen, Germany
- School
of Molecular Sciences, Arizona State University, Tempe 85287, United States
- Center
for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe 85287, United
States
| | - Christoph F. Schmidt
- Third
Institute of Physics−Biophysics, Department of Physics, University of Göttingen, 37077 Göttingen, Germany
| | - Alexandra Ros
- School
of Molecular Sciences, Arizona State University, Tempe 85287, United States
- Center
for Applied Structural Discovery, The Biodesign Institute, Arizona State University, Tempe 85287, United
States
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12
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Yan S, Zhang J, Yuan D, Li W. Hybrid microfluidics combined with active and passive approaches for continuous cell separation. Electrophoresis 2016; 38:238-249. [DOI: 10.1002/elps.201600386] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 09/29/2016] [Accepted: 09/29/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Sheng Yan
- School of Mechanical, Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
| | - Jun Zhang
- School of Mechanical, Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
- School of Mechanical Engineering; Nanjing University of Science and Technology; Nanjing P. R. China
| | - Dan Yuan
- School of Mechanical, Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
| | - Weihua Li
- School of Mechanical, Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
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13
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Zhang W, Radadia AD. Toward a Boron-Doped Ultrananocrystalline Diamond Electrode-Based Dielectrophoretic Preconcentrator. Anal Chem 2016; 88:2605-13. [DOI: 10.1021/acs.analchem.5b03227] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenli Zhang
- Institute for Micromanufacturing, Center
for Biomedical Engineering and Rehabilitation Sciences, Chemical Engineering, Louisiana Tech University, Ruston, Louisiana 71272, United States
| | - Adarsh D. Radadia
- Institute for Micromanufacturing, Center
for Biomedical Engineering and Rehabilitation Sciences, Chemical Engineering, Louisiana Tech University, Ruston, Louisiana 71272, United States
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14
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Tang SY, Yi P, Soffe R, Nahavandi S, Shukla R, Khoshmanesh K. Using dielectrophoresis to study the dynamic response of single budding yeast cells to Lyticase. Anal Bioanal Chem 2015; 407:3437-48. [DOI: 10.1007/s00216-015-8529-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/21/2015] [Accepted: 01/30/2015] [Indexed: 02/03/2023]
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15
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Yan S, Zhang J, Yuan Y, Lovrecz G, Alici G, Du H, Zhu Y, Li W. A hybrid dielectrophoretic and hydrophoretic microchip for particle sorting using integrated prefocusing and sorting steps. Electrophoresis 2014; 36:284-91. [DOI: 10.1002/elps.201400397] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 09/25/2014] [Accepted: 10/13/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Sheng Yan
- School of Mechanical; Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
| | - Jun Zhang
- School of Mechanical; Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
| | - Yuan Yuan
- School of Materials Science and Engineering; University of New South Wales; Sydney Australia
| | | | - Gursel Alici
- School of Mechanical; Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
| | - Haiping Du
- School of Electric; Computer and Telecommunication Engineering; University of Wollongong; Wollongong Australia
| | - Yonggang Zhu
- CSIRO Manufacturing Flagship; Clayton Australia
- Melbourne Centre for Nanofabrication/Australian National Fabrication Facility; Clayton Australia
| | - Weihua Li
- School of Mechanical; Materials and Mechatronic Engineering; University of Wollongong; Wollongong Australia
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16
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High resolution scanning electron microscopy of cells using dielectrophoresis. PLoS One 2014; 9:e104109. [PMID: 25089528 PMCID: PMC4121316 DOI: 10.1371/journal.pone.0104109] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 07/08/2014] [Indexed: 12/02/2022] Open
Abstract
Ultrastructural analysis of cells can reveal valuable information about their morphological, physiological, and biochemical characteristics. Scanning electron microscopy (SEM) has been widely used to provide high-resolution images from the surface of biological samples. However, samples need to be dehydrated and coated with conductive materials for SEM imaging. Besides, immobilizing non-adherent cells during processing and analysis is challenging and requires complex fixation protocols. In this work, we developed a novel dielectrophoresis based microfluidic platform for interfacing non-adherent cells with high-resolution SEM at low vacuum mode. The system enables rapid immobilization and dehydration of samples without deposition of chemical residues over the cell surface. Moreover, it enables the on-chip chemical stimulation and fixation of immobilized cells with minimum dislodgement. These advantages were demonstrated for comparing the morphological changes of non-budding and budding yeast cells following Lyticase treatment.
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Ou JZ, Chrimes AF, Wang Y, Tang SY, Strano MS, Kalantar-zadeh K. Ion-driven photoluminescence modulation of quasi-two-dimensional MoS2 nanoflakes for applications in biological systems. NANO LETTERS 2014; 14:857-63. [PMID: 24397241 DOI: 10.1021/nl4042356] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Quasi-two-dimensional (quasi-2D) molybdenum disulfide (MoS2) is a photoluminescence (PL) material with unique properties. The recent demonstration of its PL, controlled by the intercalation of positive ions, can lead to many opportunities for employing this quasi-2D material in ion-related biological applications. Here, we present two representative models of biological systems that incorporate the ion-controlled PL of quasi-2D MoS2 nanoflakes. The ion exchange behaviors of these two models are investigated to reveal enzymatic activities and cell viabilities. While the ion intercalation of MoS2 in enzymatic activities is enabled via an external applied voltage, the intercalation of ions in cell viability investigations occurs in the presence of the intrinsic cell membrane potential.
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Affiliation(s)
- Jian Zhen Ou
- School of Electrical and Computer Engineering, RMIT University , Melbourne, Victoria 3001, Australia
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