1
|
Ino K, Utagawa Y, Shiku H. Microarray-Based Electrochemical Biosensing. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2024; 187:317-338. [PMID: 37306698 DOI: 10.1007/10_2023_229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Microarrays are widely utilized in bioanalysis. Electrochemical biosensing techniques are often applied in microarray-based assays because of their simplicity, low cost, and high sensitivity. In such systems, the electrodes and sensing elements are arranged in arrays, and the target analytes are detected electrochemically. These sensors can be utilized for high-throughput bioanalysis and the electrochemical imaging of biosamples, including proteins, oligonucleotides, and cells. In this chapter, we summarize recent progress on these topics. We categorize electrochemical biosensing techniques for array detection into four groups: scanning electrochemical microscopy, electrode arrays, electrochemiluminescence, and bipolar electrodes. For each technique, we summarize the key principles and discuss the advantages, disadvantages, and bioanalysis applications. Finally, we present conclusions and perspectives about future directions in this field.
Collapse
Affiliation(s)
- Kosuke Ino
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, Japan.
| | - Yoshinobu Utagawa
- Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi, Japan
| | - Hitoshi Shiku
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, Japan.
- Graduate School of Environmental Studies, Tohoku University, Sendai, Miyagi, Japan.
| |
Collapse
|
2
|
Suzuki M, Minakuchi Y, Mizutani F, Yasukawa T. Discrimination of cell-differentiation using a cell-binding assay based on the conversion of cell-patterns with dielectrophoresis. Biosens Bioelectron 2021; 175:112892. [PMID: 33360628 DOI: 10.1016/j.bios.2020.112892] [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: 10/06/2020] [Revised: 11/30/2020] [Accepted: 12/08/2020] [Indexed: 11/25/2022]
Abstract
We developed a simple, rapid, and label-free method to obtain the ratio of cells with a specific surface protein from heterogeneous cell populations, and applied it to estimate the cell differentiation states. The repulsive force of negative dielectrophoresis was used to form the first pattern of HL60 cells on a substrate immobilized with anti-CD13 or anti-CD11b antibody. Next, the patterned cells were converted to form the second pattern by switching the pattern of the electric field. The cells exhibiting a specific protein remained in the original position due to the immunorecognition event, while the unwanted cells that were not bound to the antibody on the substrates could be simply removed. The cell-binding efficiencies of substrates modified with anti-CD13 and anti-CD11b decreased and increased, respectively, with increasing duration of cell culture in medium containing differentiation-inducing agents, including all-trans retinoic acid. This is explained by the downregulation of CD13 and upregulation of CD11b throughout the differentiation process of HL60 cells. Furthermore, the assay was applied to investigate the effects of various differentiation-inducing agents. The total assay time required for discriminating the proteins expressed on the cell surface in each differentiation state was as short as 120 s. No fluorescence label is required for the proposed assay. The method could be useful to estimate the cell differentiation and factors that influence the differentiation trajectory for numerous cell types.
Collapse
Affiliation(s)
- Masato Suzuki
- Graduate School of Material Sciences, University of Hyogo, Japan
| | - Yuki Minakuchi
- Graduate School of Material Sciences, University of Hyogo, Japan
| | - Fumio Mizutani
- Graduate School of Material Sciences, University of Hyogo, Japan
| | | |
Collapse
|
3
|
Yasukawa T, Morishima A, Suzuki M, Yoshioka J, Yoshimoto K, Mizutani F. Rapid Formation of Aggregates with Uniform Numbers of Cells Based on Three-dimensional Dielectrophoresis. ANAL SCI 2019; 35:895-901. [PMID: 31006719 DOI: 10.2116/analsci.19p074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We applied a fabrication method for the formation of island organization of cells based on a three-dimensional (3D) device for negative dielectrophoresis (n-DEP) to produce cell aggregates with uniform numbers of cells rapidly and simply. The intersections formed by rotating the interdigitated array (IDA) with two combs of band electrodes on the upper substrate by 90° relative to the IDA with two combs on the lower substrate were prepared in the device. The AC voltage was applied to a comb on the upper substrate and a comb on the lower substrate, while AC voltage with opposite phase was applied to another comb on the upper substrate and another comb on the lower substrate. Cells dispersed randomly were directed toward the intersections with relatively lower electric fields due to n-DEP, which formed by AC voltage applied bands with the identical phase, resulting in the formation of island patterns of cells. The cells accumulated at intersections were promoted to form the cell aggregates due to the close contact together. The production of cell aggregations adhered together was easily found by the dispersion behavior after switching the applied frequency to convert the cellular pattern. When cells were accumulated at the intersections by n-DEP for 45 min, almost accumulations of cells were adhered together, and hence a formations of cell aggregations. By using the present method, we can rapidly and simply fabricate cell aggregations with a uniform number of cells.
Collapse
Affiliation(s)
| | - Asa Morishima
- Graduate School of Material Science, University of Hyogo
| | - Masato Suzuki
- Graduate School of Material Science, University of Hyogo
| | - Junya Yoshioka
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo
| | - Keitaro Yoshimoto
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo
| | - Fumio Mizutani
- Graduate School of Material Science, University of Hyogo
| |
Collapse
|
4
|
Elucidating the mechanism governing cell rotation under DEP using the volumetric polarization and integration method. Biomed Microdevices 2018; 20:81. [PMID: 30196336 DOI: 10.1007/s10544-018-0327-z] [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: 12/27/2022]
Abstract
Cell rotation can be achieved by utilizing rotating electric fields through which torques are generated due to phase difference between the dipole moment of cells and the external electric field. While reports of cell rotation under non-rotating electrical fields, such as dielectrophoresis (DEP), are abound, the underlying mechanism is not fully understood. Because of this, contradicting arguments remain regarding if a single cell can rotate under conventional DEP. What's more, the current prevailing DEP theory is not adequate for identifying the cause for such disagreements. In this work we applied our recently developed Volumetric Polarization and Integration (VPI) method to investigate the possible causes for cell rotation under conventional DEP. Three-dimensional (3D) computer models dealing with a cell in a DEP environment were developed to quantify the force and torque imparted on the cell by the external DEP field using COMSOL Multiphysics software. Modeling results suggest that eccentric inclusions with low conductivity inside the cell will generate torques (either in clockwise or counter-clockwise directions) sufficient to cause cell rotation under DEP. For validation of modeling predictions, experiments with rat adipose stem cells containing large lipid droplets were conducted. Good agreement between our modeling and experimental results suggests that the VPI method is powerful in elucidating the underlying mechanisms governing the complicated DEP phenomena.
Collapse
|
5
|
Sugano T, Sasaki Y, Mizutani F, Yasukawa T. Simple Formation of Cell Arrays Embedded in Hydrogel Sheets and Cubes. ANAL SCI 2018; 34:127-130. [PMID: 29434095 DOI: 10.2116/analsci.34.127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Arrays with cell aggregations and single-cell arrays embedded in hydrogel sheets were fabricated by negative dielectrophoretic (n-DEP) cell-manipulation techniques and hydrogel gelation. Cells suspended randomly in a prepolymer solution were rapidly manipulated to form an island-like organization of cells through the repulsive force of n-DEP by using a DEP device consisting of grid electrodes. The cell patterns were retained by irradiating ultraviolet (UV) light so as to urge gelation. Moreover, control of the optical transparency of the grid electrode allows for the fabrication of cubes with single cells and cell aggregation.
Collapse
Affiliation(s)
| | - Yui Sasaki
- Graduate School of Material Science, University of Hyogo
| | - Fumio Mizutani
- Graduate School of Material Science, University of Hyogo
| | | |
Collapse
|
6
|
Yoshioka J, Yoshitomi T, Yasukawa T, Yoshimoto K. Alternation of Gene Expression Levels in Mesenchymal Stem Cells by Applying Positive Dielectrophoresis. ANAL SCI 2018; 32:1213-1216. [PMID: 27829628 DOI: 10.2116/analsci.32.1213] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this study, we investigated the effect of positive dielectrophoresis (DEP) on gene expression in mesenchymal stem cells. When applying an alternating current voltage, human bone marrow derived mesenchymal stem cells (UE7T-13) exhibited a positive DEP, and were compressed onto the electrode surface. The constructed device can easily control the DEP force to the cells by changing the frequency. Interestingly, gene expressions of the cell differentiation marker in UE7T-13 cells and the mechanical stimulation-susceptible one were changed by applying a positive DEP. These results suggested that the gene expression in mesenchymal stem cells can be regulated by applying mechanical stimulation derived from DEP.
Collapse
Affiliation(s)
- Junya Yoshioka
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo
| | | | | | | |
Collapse
|
7
|
Wassermann KJ, Barth S, Keplinger F, Noehammer C, Peham JR. High-k Dielectric Passivation: Novel Considerations Enabling Cell Specific Lysis Induced by Electric Fields. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21228-21235. [PMID: 27466697 DOI: 10.1021/acsami.6b06927] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A better understanding of the electrodynamic behavior of cells interacting with electric fields would allow for novel scientific insights and would lead to the next generation of cell manipulation, diagnostics, and treatment. Here, we introduce a promising electrode design by using metal oxide high-k dielectric passivation. The thermally generated dielectric passivation layer enables efficient electric field coupling to the fluid sample comprising cells while simultaneously decoupling the electrode ohmically from the electrolyte, allowing for better control and adjustability of electric field effects due to reduced electrochemical reactions at the electrode surface. This approach demonstrates cell-size specific lysis with electric fields in a microfluidic flow-through design resulting in 99.8% blood cell lysis at 6 s exposure without affecting the viability of Gram-positive and Gram-negative bacterial spike-ins. The advantages of this new approach can support next-generation investigations of electrodynamics in biological systems and their exploitation for cell manipulation in multiple fields of medicine, life science, and industry.
Collapse
Affiliation(s)
- Klemens J Wassermann
- Health & Environment Department, AIT Austrian Institute of Technology , Vienna, Austria
| | - Sven Barth
- Institute of Materials Chemistry, Vienna University of Technology , Vienna, Austria
| | - Franz Keplinger
- Institute of Sensor and Actuator Systems, Vienna University of Technology , Vienna, Austria
| | - Christa Noehammer
- Health & Environment Department, AIT Austrian Institute of Technology , Vienna, Austria
| | - Johannes R Peham
- Health & Environment Department, AIT Austrian Institute of Technology , Vienna, Austria
| |
Collapse
|
8
|
SUZUKI M, NAKANO R, IRIBE Y. High Efficient Cell Leading into Microwell Array by Using Positive Dielectrophoresis. ELECTROCHEMISTRY 2016. [DOI: 10.5796/electrochemistry.84.319] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Masayasu SUZUKI
- Department of Electric and Electronic Engineering, University of Toyama
| | - Ryota NAKANO
- Department of Electric and Electronic Engineering, University of Toyama
| | - Yasunori IRIBE
- Department of Electric and Electronic Engineering, University of Toyama
| |
Collapse
|
9
|
Su M, Liu H, Ge S, Ren N, Ding L, Yu J, Song X. An electrochemiluminescence lab-on-paper device for sensitive detection of two antigens at the MCF-7 cell surface based on porous bimetallic AuPd nanoparticles. RSC Adv 2016. [DOI: 10.1039/c5ra26606h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Sensitive detection of two antigens at the MCF-7 cell surface based on porous bimetallic AuPd nanopar.
Collapse
Affiliation(s)
- Min Su
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Haiyun Liu
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Shenguang Ge
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Na Ren
- School of Biology Science and Technology
- University of Jinan
- Jinan 250022
- P. R. China
| | - Longhua Ding
- School of Biology Science and Technology
- University of Jinan
- Jinan 250022
- P. R. China
| | - Jinghua Yu
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Xianrang Song
- Shandong Provincial Key Laboratory of Radiation Oncology
- Shandong Cancer Hospital and Institute
- Jinan 250117
- China
| |
Collapse
|
10
|
Kanno Y, Ino K, Shiku H, Matsue T. A local redox cycling-based electrochemical chip device with nanocavities for multi-electrochemical evaluation of embryoid bodies. LAB ON A CHIP 2015; 15:4404-4414. [PMID: 26481771 DOI: 10.1039/c5lc01016k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An electrochemical device, which consists of electrode arrays, nanocavities, and microwells, was developed for multi-electrochemical detection with high sensitivity. A local redox cycling-based electrochemical (LRC-EC) system was used for multi-electrochemical detection and signal amplification. The LRC-EC system consists of n(2) sensors with only 2n bonding pads for external connection. The nanocavities fabricated in the sensor microwells enable significant improvement of the signal amplification compared with the previous devices we have developed. The present device was successfully applied for evaluation of embryoid bodies (EBs) from embryonic stem (ES) cells via electrochemical measurements of alkaline phosphatase (ALP) activity in the EBs. In addition, the EBs were successfully trapped in the sensor microwells of the device using dielectrophoresis (DEP) manipulation, which led to high-throughput cell analysis. This device is considered to be useful for multi-electrochemical detection and imaging for bioassays including cell analysis.
Collapse
Affiliation(s)
- Yusuke Kanno
- Graduate School of Environmental Studies, Tohoku University, Japan.
| | - Kosuke Ino
- Graduate School of Environmental Studies, Tohoku University, Japan.
| | - Hitoshi Shiku
- Graduate School of Environmental Studies, Tohoku University, Japan.
| | - Tomokazu Matsue
- Graduate School of Environmental Studies, Tohoku University, Japan. and WPI-Advanced Institute for Materials Research, Tohoku University, Japan
| |
Collapse
|
11
|
Swaminathan VV, Shannon MA, Bashir R. Enhanced sub-micron colloidal particle separation with interdigitated microelectrode arrays using mixed AC/DC dielectrophoretic scheme. Biomed Microdevices 2015; 17:29. [DOI: 10.1007/s10544-015-9935-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
12
|
Watanabe M, Hatano R, Koizumi C. Spontaneous formation of interdigitated array pattern in wrinkled gold films deposited on poly(dimethylsiloxane) elastomer. Polym J 2015. [DOI: 10.1038/pj.2014.116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
13
|
INO K. Microchemistry- and MEMS-based Integrated Electrochemical Devices for Bioassay Applications. ELECTROCHEMISTRY 2015. [DOI: 10.5796/electrochemistry.83.688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Kosuke INO
- Graduate School of Environmental Studies, Tohoku University
| |
Collapse
|
14
|
Horii T, Yamamoto M, Yasukawa T, Mizutani F. Rapid formation of cell-particle complexes via dielectrophoretic manipulation for the detection of surface antigens. Biosens Bioelectron 2014; 61:215-21. [DOI: 10.1016/j.bios.2014.05.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 04/30/2014] [Accepted: 05/08/2014] [Indexed: 01/09/2023]
|
15
|
Yoshimura Y, Fujii C, Tomita M, Mizutani F, Yasukawa T. Array of Single-cell Pairs on a Microwell Array Based on Positive Dielectrophoresis. CHEM LETT 2014. [DOI: 10.1246/cl.140195] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuki Yoshimura
- Graduate School of Material Science, University of Hyogo
| | - Chiaki Fujii
- Graduate School of Material Science, University of Hyogo
| | - Masahiro Tomita
- Division of Chemistry for Materials, Graduate School of Engineering, Mie University
| | - Fumio Mizutani
- Graduate School of Material Science, University of Hyogo
| | | |
Collapse
|
16
|
Yoshimura Y, Tomita M, Mizutani F, Yasukawa T. Cell pairing using microwell array electrodes based on dielectrophoresis. Anal Chem 2014; 86:6818-22. [PMID: 24947270 DOI: 10.1021/ac5015996] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a simple device with an array of 10,000 (100 × 100) microwells for producing vertical pairs of cells in individual microwells with a rapid manipulation based on positive dielectrophoresis (p-DEP). The areas encircled with micropoles which fabricated from an electrical insulating photosensitive polymer were used as microwells. The width (14 μm) and depth (25 μm) of the individual microwells restricted the size to two vertically aligned cells. The DEP device for the manipulation of cells consisted of a microfluidic channel with an upper indium tin oxide (ITO) electrode and a lower microwell array electrode fabricated on an ITO substrate. Mouse myeloma cells stained in green were trapped within 1 s in the microwells by p-DEP by applying an alternating current voltage between the upper ITO and the lower microwell array electrode. The cells were retained inside the wells even after switching off the voltage and washing with a fluidic flow. Other myeloma cells stained in blue were then trapped in the microwells occupied by the cells stained in green to form the vertical cell pairing in the microwells. Cells stained in different colors were paired within only 1 min and a pairing efficiency of over 50% was achieved.
Collapse
Affiliation(s)
- Yuki Yoshimura
- Graduate School of Material Science, University of Hyogo , 3-2-1 Kouto, Kamigori, Ako, Hyogo 678-1297, Japan
| | | | | | | |
Collapse
|
17
|
Yasukawa T, Mizutani F. ELECTROCHEMISTRY 2014; 82:993-999. [DOI: 10.5796/electrochemistry.82.993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
|
18
|
Şen M, Ino K, Ramón-Azcón J, Shiku H, Matsue T. Cell pairing using a dielectrophoresis-based device with interdigitated array electrodes. LAB ON A CHIP 2013; 13:3650-2. [PMID: 23884281 DOI: 10.1039/c3lc50561h] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We present a chip device with an array of 900 gourd-shaped microwells designed to pair single cells of different types. The device consists of interdigitated array (IDA) electrodes and uses positive dielectrophoresis to trap cells within the microwells. Each side of a microwell is on a different comb of the IDA, so that cells of different types are trapped on opposite sides of the microwells, leading to close cell pairing. Using this device, a large number of cell pairs can be formed easily and rapidly, making it a highly attractive tool for controllable cell pairing in a range of biological applications.
Collapse
Affiliation(s)
- Mustafa Şen
- Graduate School of Environmental Studies, Tohoku University, Sendai 980-8579, Japan
| | | | | | | | | |
Collapse
|
19
|
Yasukawa T, Yoshida Y, Hatanaka H, Mizutani F. Line Patterning with Microparticles at Different Positions in a Single Device Based on Negative Dielectrophoresis. JOURNAL OF ROBOTICS AND MECHATRONICS 2013. [DOI: 10.20965/jrm.2013.p0650] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We report on control of line pattern positioning with particles fabricated by negative dielectrophoresis (n-DEP) using the applied intensity and phase of an AC electric field. Line patterns were fabricated in a microfluidic device consisting of upper conductive indium-tin-oxide (ITO) substrates and lower ITOinterdigitated microband array (IDA) electrodes used as the template. A 6-µm-diameter polystyrene particles suspension was introduced into the device between upper ITO and the bottom ITO-IDA substrate. An AC electric signal of a typically 20 peak-to-peak voltage and 1.0 MHz was then applied to upper ITO and bands on lower IDA, resulting in the formation of line patterns with low electric-field gradient regions. AC voltage was applied to bands A and B on lower IDA with the opposite phase and the same frequency and intensity. When the signal identical to band A was applied to upper ITO, particles were aligned above band A because relatively lower electric fields were produced in these regions. In contrast, the application of a signal identical to band B formed line patterns with particles aligned above band B due to the generation of a strong electric field between band A and upper ITO and the disappearance of the strong electric field between band B and upper ITO. The decrease in applied intensity to upper ITO shifted the accumulated position of particles to the center between bands A and B because of the balance of electric fields generated between band A or B and upper ITO. We thus fabricated line patterns with particles at desired positions in the fluidic device.
Collapse
|
20
|
Tang SY, Zhang W, Baratchi S, Nasabi M, Kalantar-zadeh K, Khoshmanesh K. Modifying Dielectrophoretic Response of Nonviable Yeast Cells by Ionic Surfactant Treatment. Anal Chem 2013; 85:6364-71. [DOI: 10.1021/ac400741v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shi-Yang Tang
- School of Electrical and Computer
Engineering, RMIT University, VIC 3001,
Australia
| | - Wei Zhang
- School of Electrical and Computer
Engineering, RMIT University, VIC 3001,
Australia
| | - Sara Baratchi
- School of Electrical and Computer
Engineering, RMIT University, VIC 3001,
Australia
- Health Innovations
Research
Institute, RMIT University, VIC 3083, Australia
| | - Mahyar Nasabi
- School of Electrical and Computer
Engineering, RMIT University, VIC 3001,
Australia
| | | | | |
Collapse
|
21
|
Reorientation of microfluidic channel enables versatile dielectrophoretic platforms for cell manipulations. Electrophoresis 2013; 34:1407-14. [DOI: 10.1002/elps.201200659] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/23/2013] [Accepted: 02/19/2013] [Indexed: 12/11/2022]
|
22
|
Adams TNG, Leonard KM, Minerick AR. Frequency sweep rate dependence on the dielectrophoretic response of polystyrene beads and red blood cells. BIOMICROFLUIDICS 2013; 7:64114. [PMID: 24396548 PMCID: PMC3874050 DOI: 10.1063/1.4833095] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 11/11/2013] [Indexed: 05/12/2023]
Abstract
Alternating current (AC) dielectrophoresis (DEP) experiments for biological particles in microdevices are typically done at a fixed frequency. Reconstructing the DEP response curve from static frequency experiments is laborious, but essential to ascertain differences in dielectric properties of biological particles. Our lab explored the concept of sweeping the frequency as a function of time to rapidly determine the DEP response curve from fewer experiments. For the purpose of determining an ideal sweep rate, homogeneous 6.08 μm polystyrene (PS) beads were used as a model system. Translatability of the sweep rate approach to ∼7 μm red blood cells (RBC) was then verified. An Au/Ti quadrapole electrode microfluidic device was used to separately subject particles and cells to 10Vpp AC electric fields at frequencies ranging from 0.010 to 2.0 MHz over sweep rates from 0.00080 to 0.17 MHz/s. PS beads exhibited negative DEP assembly over the frequencies explored due to Maxwell-Wagner interfacial polarizations. Results demonstrate that frequency sweep rates must be slower than particle polarization timescales to achieve reliable incremental polarizations; sweep rates near 0.00080 MHz/s yielded DEP behaviors very consistent with static frequency DEP responses for both PS beads and RBCs.
Collapse
Affiliation(s)
- T N G Adams
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA
| | - K M Leonard
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA
| | - A R Minerick
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, USA
| |
Collapse
|