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Park I, Choi S, Gwak Y, Kim J, Min G, Lim D, Lee SW. Microfluidic Electroporation Arrays for Investigating Electroporation-Induced Cellular Rupture Dynamics. BIOSENSORS 2024; 14:242. [PMID: 38785716 PMCID: PMC11118139 DOI: 10.3390/bios14050242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 05/01/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
Electroporation is pivotal in bioelectrochemistry for cellular manipulation, with prominent applications in drug delivery and cell membrane studies. A comprehensive understanding of pore generation requires an in-depth analysis of the critical pore size and the corresponding energy barrier at the onset of cell rupture. However, many studies have been limited to basic models such as artificial membranes or theoretical simulations. Challenging this paradigm, our study pioneers using a microfluidic electroporation chip array. This tool subjects live breast cancer cell species to a diverse spectrum of alternating current electric field conditions, driving electroporation-induced cell rupture. We conclusively determined the rupture voltages across varying applied voltage loading rates, enabling an unprecedented characterization of electric cell rupture dynamics encompassing critical pore radius and energy barrier. Further bolstering our investigation, we probed cells subjected to cholesterol depletion via methyl-β-cyclodextrin and revealed a strong correlation with electroporation. This work not only elucidates the dynamics of electric rupture in live cell membranes but also sets a robust foundation for future explorations into the mechanisms and energetics of live cell electroporation.
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Affiliation(s)
- Insu Park
- Department of Biomedical Engineering, Konyang University, Daejeon 35365, Republic of Korea; (I.P.)
| | - Seungyeop Choi
- School of Biomedical Engineering, Korea University, Seoul 02481, Republic of Korea;
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
- BK21 Four Institute of Precision Public Health, Korea University, Seoul 02841, Republic of Korea
| | - Youngwoo Gwak
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Jingwon Kim
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Gyeongjun Min
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Danyou Lim
- Department of Biomedical Engineering, Konyang University, Daejeon 35365, Republic of Korea; (I.P.)
| | - Sang Woo Lee
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
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2
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Kwak TJ, Son T, Hong JS, Winter UA, Jeong MH, McLean C, Weissleder R, Lee H, Castro CM, Im H. Electrokinetically enhanced label-free plasmonic sensing for rapid detection of tumor-derived extracellular vesicles. Biosens Bioelectron 2023; 237:115422. [PMID: 37301179 PMCID: PMC10527155 DOI: 10.1016/j.bios.2023.115422] [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: 02/03/2023] [Revised: 05/02/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
ANALYSIS of rare circulating extracellular vesicles (EV) from early cancers or different types of host cells requires extremely sensitive EV sensing technologies. Nanoplasmonic EV sensing technologies have demonstrated good analytical performances, but their sensitivity is often limited by EVs' diffusion to the active sensor surface for specific target EV capture. Here, we developed an advanced plasmonic EV platform with electrokinetically enhanced yields (KeyPLEX). The KeyPLEX system effectively overcomes diffusion-limited reactions with applied electroosmosis and dielectrophoresis forces. These forces bring EVs toward the sensor surface and concentrate them in specific areas. Using the keyPLEX, we showed significant improvements in detection sensitivity by ∼100-fold, leading to the sensitive detection of rare cancer EVs from human plasma samples in 10 min. The keyPLEX system could become a valuable tool for point-of-care rapid EV analysis.
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Affiliation(s)
- Tae Joon Kwak
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Taehwang Son
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Jae-Sang Hong
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Ursula Andrea Winter
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Mi Ho Jeong
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Charlotte McLean
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Department of Health Science, Northeastern University Boston, MA, 02115, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA; Cancer Center, Massachusetts General Hospital, Boston, MA, 02114, USA; Department of Systems Biology, Harvard Medical School, Boston, MA, 02115, USA
| | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Cesar M Castro
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Cancer Center, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Hyungsoon Im
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA; Department of Radiology, Massachusetts General Hospital, Boston, MA, 02114, USA.
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3
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Lee HG, Roh S, Kim HJ, Kim S, Hong Y, Lee G, Jeon OH. Nanoscale biophysical properties of small extracellular vesicles from senescent cells using atomic force microscopy, surface potential microscopy, and Raman spectroscopy. NANOSCALE HORIZONS 2022; 7:1488-1500. [PMID: 36111604 DOI: 10.1039/d2nh00220e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cells secrete extracellular vesicles (EVs) carrying cell-of-origin markers to communicate with surrounding cells. EVs regulate physiological processes ranging from intercellular signaling to waste management. However, when senescent cells (SnCs) secrete EVs, the EVs, which are newly regarded as senescence-associated secretory phenotype (SASP) factors, can evoke inflammation, senescence induction, and metabolic disorders in neighboring cells. Unlike other soluble SASP factors, the biophysical properties of EVs, including small EVs (sEVs), derived from SnCs have not yet been investigated. In this study, sEVs were extracted from a human IMR90 lung fibroblast in vitro senescence model. Their biomechanical properties were mapped using atomic force microscopy-based quantitative nanomechanical techniques, surface potential microscopy, and Raman spectroscopy. The surfaces of sEVs derived from SnCs are slightly stiffer but their cores are softer than those of sEVs secreted from non-senescent cells (non-SnCs). This inversely proportional relationship between deformation and stiffness, attributed to a decrease in the concentration of genetic and protein materials inside the vesicles and the adsorption of positively charged SASP factors onto the vesicle surfaces, respectively, was found to be a peculiar characteristic of SnC-derived sEVs. Our results demonstrate that the biomechanical properties of SnC-derived sEVs differ from those of non-SnC-derived sEVs and provide insight into the mechanisms underlying their formation and composition.
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Affiliation(s)
- Hyo Gyeong Lee
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea.
| | - Seokbeom Roh
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.
- Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong 30019, Republic of Korea
| | - Hyun Jung Kim
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.
- Department of Medical Device, Korea Institute of Machinery and Materials (KIMM), Daegu 42994, Republic of Korea.
| | - Seokho Kim
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Yoochan Hong
- Department of Medical Device, Korea Institute of Machinery and Materials (KIMM), Daegu 42994, Republic of Korea.
| | - Gyudo Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.
- Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong 30019, Republic of Korea
| | - Ok Hee Jeon
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Republic of Korea.
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Yeo KI, Park I, Lee SH, Lee SY, Chang WJ, Bashir R, Choi S, Lee SW. Ultra-sensitive dielectrophoretic surface charge multiplex detection inside a micro-dielectrophoretic device. Biosens Bioelectron 2022; 210:114235. [PMID: 35483112 DOI: 10.1016/j.bios.2022.114235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 03/22/2022] [Accepted: 03/28/2022] [Indexed: 12/23/2022]
Abstract
Label-free dielectrophoretic force-based surface charge detection has shown great potential for highly sensitive and selective sensing of metal ions and small biomolecules. However, this method suffers from a complex calibration process and measurement signal interference in simultaneous multi-analyte detection, thus creating difficulties in multiplex detection. We have developed a method to overcome these issues based on the optical discrimination of the dielectrophoretic behaviors of multiple microparticle probes considering the surface charge difference before and after self-assembling conjugation. In this report, we demonstrate and characterize this dielectrophoretic force-based surface charge detection method with particle probes functionalized by various biomolecules. This technique achieved an attomolar limit of detection (LOD) for Hg2+ in distilled water and a femtomolar LOD in drinking water using DNA aptamer-functionalized particle probes. More importantly, using two different DNA aptamer-functionalized particle probes for Hg2+ and Ag+, label-free dielectrophoretic multiplex detection of these species in drinking water with a femtomolar and a nanomolar LOD was achieved for the first time.
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Affiliation(s)
- Kang In Yeo
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Insu Park
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Sang Hyun Lee
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Sei Young Lee
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Woo-Jin Chang
- Mechanical Engineering Department, University of Wisconsin-Milwaukee, Milwaukee, WI, 53211, USA
| | - Rashid Bashir
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Seungyeop Choi
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, Republic of Korea.
| | - Sang Woo Lee
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, Republic of Korea.
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Rahman MRU, Kwak TJ, Woehl JC, Chang WJ. Effect of geometry on dielectrophoretic trap stiffness in microparticle trapping. Biomed Microdevices 2021; 23:33. [PMID: 34185161 DOI: 10.1007/s10544-021-00570-3] [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: 06/11/2021] [Indexed: 10/21/2022]
Abstract
Dielectrophoresis, an electrokinetic technique, can be used for contactless manipulation of micro- and nano-size particles suspended in a fluid. We present a 3-D microfluidic DEP device with an orthogonal electrode configuration that uses negative dielectrophoresis to trap spherical polystyrene micro-particles. Traps with three different basic geometric shapes, i.e. triangular, square, and circular, and a fixed trap area of around 900 μm2 were investigated to determine the effect of trap shape on dynamics and strength of particle trapping. Effects of trap geometry were quantitatively investigated by means of trap stiffness, with applied electric potentials from 6 VP-P to 10 VP-P at 1 MHz. Analyzing the trap stiffness with a trapped 4.42 μm spherical particle showed that the triangular trap is the strongest, while the square shape trap is the weakest. The trap stiffness grew more than eight times in triangular traps and six times in both square and circular traps when the potential of the applied electric field was increased from 6 VP-P to 10 VP-P at 1 MHz. With the maximum applied potential, i.e. 10 VP-P at 1 MHz, the stiffness of the triangular trap was 60% and 26% stronger than the square and circular trap, respectively. A finite element model of the microfluidic DEP device was developed to numerically compute the DEP force for these trap shapes. The findings from the numerical computation demonstrate good agreement with the experimental analysis. The analysis of three different trap shapes provides important insights to predict trapping location, strength of the trapping zone, and optimized geometry for high throughput particle trapping.
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Affiliation(s)
| | - Tae Joon Kwak
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Jörg C Woehl
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI, 53211, USA
| | - Woo-Jin Chang
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, 53211, USA. .,School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, 53204, USA.
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6
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Kwak TJ, Jung H, Allen BD, Demirel MC, Chang WJ. Dielectrophoretic separation of randomly shaped protein particles. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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7
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Rahman MRU, Kwak TJ, Woehl JC, Chang WJ. Quantitative analysis of the three-dimensional trap stiffness of a dielectrophoretic corral trap. Electrophoresis 2021; 42:644-655. [PMID: 33340119 DOI: 10.1002/elps.202000222] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/07/2020] [Accepted: 12/14/2020] [Indexed: 11/08/2022]
Abstract
Dielectrophoresis is a robust approach for the manipulation and separation of (bio)particles using microfluidic platforms. We developed a dielectrophoretic corral trap in a microfluidic device that utilizes negative dielectrophoresis to capture single spherical polystyrene particles. Circular-shaped micron-size traps were employed inside the device and the three-dimensional trap stiffness (restoring trapping force from equilibrium trapping location) was analyzed using 4.42 μm particles and 1 MHz of an alternating electric field from 6 VP-P to 10 VP-P . The trap stiffness increased exponentially in the x- and y-direction, and linearly in the z-direction. Image analysis of the trapped particle movements revealed that the trap stiffness is increased 608.4, 539.3, and 79.7% by increasing the voltage from 6 VP-P to 10 VP-P in the x-, y-, and z-direction, respectively. The trap stiffness calculated from a finite element simulation of the device confirmed the experimental results. This analysis provides important insights to predict the trapping location, strength of the trapping, and optimum geometry for single particle trapping and its applications such as single-molecule analysis and drug discovery.
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Affiliation(s)
| | - Tae Joon Kwak
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - Jörg C Woehl
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Woo-Jin Chang
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.,School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
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8
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Baliyan VK, Lee B, Song JK. Quantum Dot Arrays Fabricated Using In Situ Photopolymerization of a Reactive Mesogen and Dielectrophoresis. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40655-40661. [PMID: 32786215 DOI: 10.1021/acsami.0c10915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Dielectrophoresis (DEP) is an excellent tool for manipulating small particles within a liquid or gas medium. However, when the size of the particles is too small, such as with quantum dots (QDs), it is difficult to manipulate the particles using DEP because the dielectrophoretic force (FDEP) depends on the volume of the particles and is therefore too weak to achieve particle migration. Herein, we demonstrate a novel method for controlling nanoscale QD particles using DEP by introducing photopolymerized reactive mesogen (RM) bead vehicles. The size of an RM bead is well-controlled by the RM concentration in the medium, and when the size is approximately 0.2 μm or larger, the RM beads can be arbitrarily manipulated using DEP under moderate electric fields. Interestingly, during photopolymerization, QD particles are easily absorbed by polymerized RM beads and most of the QDs are embedded within the RM beads. Hence, we can fabricate periodic QD arrays by manipulating the RM beads containing such dots. In addition, we can fabricate multicolor QD arrays by repeating the processes using different QD particles. The shape of a DEP-assisted QD-RM network pattern can be precisely predicted by calculating the gradient of the square of the electric field (∇E2) and the corresponding FDEP. This new technology may be useful for the fabrication of optical devices, displays, photonic crystal devices, and bioapplications.
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Affiliation(s)
- Vijay Kumar Baliyan
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Bomi Lee
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Jang-Kun Song
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
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9
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Park I, Lim JW, Kim SH, Choi S, Ko KH, Son MG, Chang WJ, Yoon YR, Yang S, Key J, Kim YS, Eom K, Bashir R, Lee SY, Lee SW. Variable Membrane Dielectric Polarization Characteristic in Individual Live Cells. J Phys Chem Lett 2020; 11:7197-7203. [PMID: 32813536 DOI: 10.1021/acs.jpclett.0c01427] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Investigation of the dielectric properties of cell membranes plays an important role in understanding the biological activities that sustain cellular life and realize cellular functionalities. Herein, the variable dielectric polarization characteristics of cell membranes are reported. In controlling the dielectric polarization of a cell using dielectrophoresis force spectroscopy, different cellular crossover frequencies were observed by modulating both the direction and sweep rate of the frequency. The crossover frequencies were used for the extraction of the variable capacitance, which is involved in the dielectric polarization across the cell membranes. In addition, this variable phenomenon was investigated by examining cells whose membranes were cholesterol-depleted with methyl-β-cyclodextrin, which verified a strong correlation between the variable dielectric polarization characteristics and membrane composition changes. This study presented the dielectric polarization properties in live cells' membranes that can be modified by the regulation of external stimuli and provided a powerful platform to explore cellular membrane dielectric polarization.
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Affiliation(s)
- Insu Park
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jong Won Lim
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Sung Hoon Kim
- Department of Biomedical Laboratory Science, Yonsei University, Wonju 26493, Korea
- Department of Biomedical Laboratory Science, Korea Nazarene University, Chungnam 31172, Korea
| | - Seungyeop Choi
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Kwan Hwi Ko
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Myung Gu Son
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Woo-Jin Chang
- Mechanical Engineering Department, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, United States
| | - Young Ro Yoon
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Sejung Yang
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Jaehong Key
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Yoon Suk Kim
- Department of Biomedical Laboratory Science, Yonsei University, Wonju 26493, Korea
| | - Kilho Eom
- Biomechanics Laboratory, College of Sport Science, Sungkyunkwan University, Suwon 16419, Korea
| | - Rashid Bashir
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Carle Illinois College of Medicine, Urbana, Illinois 61801, United States
- Mayo-Illinois Alliance for Technology Based Healthcare, Urbana, Illinois 61801, United States
| | - Sei Young Lee
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
| | - Sang Woo Lee
- Department of Biomedical Engineering, Yonsei University, Wonju 26493, Korea
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Lee B, Lee JS, Yoon HJ, Hong SH, Song JK. Generation and manipulation of isotropic droplets in nematic medium using switchable dielectrophoresis. Phys Rev E 2020; 101:012704. [PMID: 32069560 DOI: 10.1103/physreve.101.012704] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Indexed: 01/08/2023]
Abstract
Dielectrophoresis (DEP) in a medium with anisotropic dielectric susceptibility is very different from typical DEP in an isotropic medium: The direction of particle actuation can be switched depending on the direction of the susceptibility tensor of the medium. However, the understanding of switchable DEP (SDEP) in an anisotropic medium is still in its infant stage. Here, we investigate SDEP using heat-generated isotropic droplets in a nematic liquid crystal (LC) medium. We demonstrate that the location of the generation of isotropic droplets can be partially controlled by controlling the temperature gradient within the LC cell using dielectric loss. The SDEP actuation of isotropic droplets is also highly dependent on the location of the isotropic droplets. Using this method, we fabricated different array patterns of isotropic and nematic phase separations under different applied signals.
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Affiliation(s)
- Bomi Lee
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Jun-Seo Lee
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Hyun-Jin Yoon
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea.,Merck Performance Materials Ltd., Pyeongtaek 17956, Republic of Korea
| | - Seung-Ho Hong
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Jang-Kun Song
- Department of Electrical & Computer Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea
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11
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Localized Dielectric Loss Heating in Dielectrophoresis Devices. Sci Rep 2019; 9:18977. [PMID: 31831755 PMCID: PMC6908616 DOI: 10.1038/s41598-019-55031-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/18/2019] [Indexed: 02/02/2023] Open
Abstract
Temperature increases during dielectrophoresis (DEP) can affect the response of biological entities, and ignoring the effect can result in misleading analysis. The heating mechanism of a DEP device is typically considered to be the result of Joule heating and is overlooked without an appropriate analysis. Our experiment and analysis indicate that the heating mechanism is due to the dielectric loss (Debye relaxation). A temperature increase between interdigitated electrodes (IDEs) has been measured with an integrated micro temperature sensor between IDEs to be as high as 70 °C at 1.5 MHz with a 30 Vpp applied voltage to our ultra-low thermal mass DEP device. Analytical and numerical analysis of the power dissipation due to the dielectric loss are in good agreement with the experiment data.
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12
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Podoynitsyn SN, Sorokina ON, Klimov MA, Levin II, Simakin SB. Barrier contactless dielectrophoresis: A new approach to particle separation. SEPARATION SCIENCE PLUS 2019. [DOI: 10.1002/sscp.201800128] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | - Olga N. Sorokina
- Emanuel Institute of Biochemical Physics of RAS; Moscow Russian Federation
| | - Maksim A. Klimov
- Emanuel Institute of Biochemical Physics of RAS; Moscow Russian Federation
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13
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Dielectrophoresis Manipulation: Versatile Lateral and Vertical Mechanisms. BIOSENSORS-BASEL 2019; 9:bios9010030. [PMID: 30813614 PMCID: PMC6468784 DOI: 10.3390/bios9010030] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/24/2019] [Accepted: 01/30/2019] [Indexed: 12/11/2022]
Abstract
Discussing the topic of the capability of dielectrophoresis (DEP) devices in terms of the selective detection and rapid manipulation of particles based on the DEP force (FDEP) via contactless methods is challenging in medical research, drug discovery and delivery. Nonetheless, the process of the selective detection and rapid manipulation of particles via contactless DEP based on dielectric particles and the surrounding medium can reduce the effects of major issues, including physical contact with the particles and medium contamination to overcome operational difficulties. In this review, DEP microelectromechanical system (MEMS) microelectrodes with a tapered profile for the selective detection and rapid manipulation of particles were studied and compared with those of conventional designs with a straight-cut profile. The main objective of this manuscript is to review the versatile mechanism of tapered DEP MEMS microelectrodes for the purpose of selective detection and rapid manipulation. Thus, this review provides a versatile filtration mechanism with the potential for a glomerular-based membrane in an artificial kidneys’ development solution for implementing engineered particles and cells by lateral attraction as well as vertical repulsion in the development of lab-on-a-chip applications. For tapered DEP MEMS microelectrodes, the scope of this study methodology involved the characterisation of DEP, modelling of the polarisation factor and the dynamic dielectric changes between the particles and medium. Comprehensive discussions are presented on the capability of tapered DEP microelectrodes to drive the selected particles and the simulation, fabrication and testing of the tapered profile. This study revealed an outstanding performance with the capability of producing two regions of high electric field intensity at the bottom and top edges of the side wall of tapered microelectrodes. Observations on particle separation mainly by the lateral attraction force of particles with positive DEP on the y-axis and vertical repulsion force of particles with negative DEP on the z-axis proved an efficient and uniform FDEP produced by tapered electrodes. In conclusion, this study confirmed the reliability and efficiency of the tapered DEP microelectrodes in the process of selective detection and rapid manipulation at a higher efficiency rate than straight-cut microelectrodes, which is significant in DEP technology applications.
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Automated Dielectrophoretic Tweezers-Based Force Spectroscopy System in a Microfluidic Device. SENSORS 2017; 17:s17102272. [PMID: 28976941 PMCID: PMC5677021 DOI: 10.3390/s17102272] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 09/22/2017] [Accepted: 09/29/2017] [Indexed: 11/17/2022]
Abstract
We reported an automated dielectrophoretic (DEP) tweezers-based force spectroscopy system to examine intermolecular weak binding interactions, which consists of three components: (1) interdigitated electrodes and micro-sized polystyrene particles used as DEP tweezers and probes inside a microfluidic device, along with an arbitrary function generator connected to a high voltage amplifier; (2) microscopy hooked up to a high-speed charge coupled device (CCD) camera with an image acquisition device; and (3) a computer aid control system based on the LabVIEW program. Using this automated system, we verified the measurement reliability by measuring intermolecular weak binding interactions, such as hydrogen bonds and Van der Waals interactions. In addition, we also observed the linearity of the force loading rates, which is applied to the probes by the DEP tweezers, by varying the number of voltage increment steps and thus affecting the linearity of the force loading rates. This system provides a simple and low-cost platform to investigate intermolecular weak binding interactions.
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Choi S, Lee G, Park IS, Son M, Kim W, Lee H, Lee SY, Na S, Yoon DS, Bashir R, Park J, Lee SW. Detection of Silver Ions Using Dielectrophoretic Tweezers-Based Force Spectroscopy. Anal Chem 2016; 88:10867-10875. [DOI: 10.1021/acs.analchem.6b00107] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seungyeop Choi
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Gyudo Lee
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
- School
of Public Health, Harvard University, Boston, Massachusetts 02115, United States
| | - In Soo Park
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Myeonggu Son
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Woong Kim
- Department
of Control and Instrumentation Engineering, Korea University, Sejong 30019, Republic of Korea
| | - Hyungbeen Lee
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Sei-Young Lee
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
| | - Sungsoo Na
- Department
of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Dae Sung Yoon
- Department
of Bio-convergence Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Rashid Bashir
- Department
of Bioengineering, University Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Jinsung Park
- Department
of Control and Instrumentation Engineering, Korea University, Sejong 30019, Republic of Korea
| | - Sang Woo Lee
- Department
of Biomedical Engineering, Yonsei University, Wonju 26493, Republic of Korea
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