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You searched for: Journal Electrophoresis Remove constraint Journal: Electrophoresis Publication Year 2019 Remove constraint Publication Year: 2019 Source 2019 v.40 no.6 Remove constraint Source: 2019 v.40 no.6
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1. A highly sensitive aptasensor for on‐site detection of lipopolysaccharides in food

Author:
Cheng, Cheng; Wu, Jayne; Chen, Jiangang
Source:
Electrophoresis 2019 v.40 no.6 pp. 890-896
ISSN:
0173-0835
Subject:
Escherichia coli; aptasensors; capacitance; death; dielectrophoresis; electrodes; electrophoresis; fever; food safety; instrumentation; lipopolysaccharides; medical equipment; oligonucleotides; septic shock
Abstract:
... A rapid, low‐cost, highly sensitive, and specific capacitive aptasensor is presented for detection of lipopolysaccharides (LPS). Exposure to LPS could cause fever, gram‐negative sepsis, septic shock, and eventual death. Hence, rapid, low cost, and sensitive detection of LPS is pivotal for the safety of food, pharmaceutical, and medical devices and products. In this work, a capacitive sensing metho ...
DOI:
10.1002/elps.201800289

2. A novel microfluidic capture and monitoring method for assessing physiological damage of C. elegans under microgravity

Author:
Wang, Junsheng; Meng, Jie; Ding, Gege; Kang, Yuejun; Zhao, Wenshuang
Source:
Electrophoresis 2019 v.40 no.6 pp. 922-929
ISSN:
0173-0835
Subject:
Caenorhabditis elegans; electrophoresis; fluorescence; humans; image analysis; microgravity; microorganisms; monitoring; organ-on-a-chip
Abstract:
... Spatial microgravity is a significant factor affecting and causing physiological changes of organisms in space environment. On‐site assessment of the damage associated to microgravity is very important for future long‐term space exploration of mankind. In this paper, a new microfluidic device for analyzing the damage of microgravity on Caenorhabditis elegans (C. elegans) has been developed. This d ...
DOI:
10.1002/elps.201800461

3. A numerical study on viscoelastic droplet migration on a solid substrate due to wettability gradient

Author:
Bai, Fan; Li, Yuke; Zhang, Hongna; Joo, Sang Woo
Source:
Electrophoresis 2019 v.40 no.6 pp. 851-858
ISSN:
0173-0835
Subject:
deformation; droplets; electrophoresis; mathematical models; viscoelasticity; wettability
Abstract:
... This study investigates the viscoelastic effects on droplet migration induced by a wettability gradient on a rigid substrate by a numerical simulation based on OpenFOAM with the volume‐of‐fluid method. The droplets are set with different rheological properties to investigate the effect of the elastic parameters. The Oldroyd‐B model was employed. Quantitative differences in the migration and deform ...
DOI:
10.1002/elps.201800371

4. A passive microfluidic device for continuous microparticle enrichment

Author:
Fan, Liang‐Liang; Zhu, Xiao‐Liang; Yan, Qing; Zhe, Jiang; Zhao, Liang
Source:
Electrophoresis 2019 v.40 no.6 pp. 1000-1009
ISSN:
0173-0835
Subject:
blood; electrophoresis; geometry; liquids; microparticles; therapeutics; yeasts
Abstract:
... A passive microfluidic device is reported for continuous microparticle enrichment. The microparticle is enriched based on the inertial effect in a microchannel with contracting‐expanding structures on one side where microparticles/cells are subjected to the inertial lift force and the momentum‐change‐induced inertial force induced by highly curved streamlines. Under the combined effect of the two ...
DOI:
10.1002/elps.201800454

5. A smart and portable micropump for stable liquid delivery

Author:
Zhang, Xinjie; Xia, Kang; Ji, Aimin; Xiang, Nan
Source:
Electrophoresis 2019 v.40 no.6 pp. 865-872
ISSN:
0173-0835
Subject:
cost effectiveness; electrophoresis; lab-on-a-chip technology; liquids; microbeads; organ-on-a-chip
Abstract:
... Precise and reliable liquid delivery is vital for microfluidic applications. Here, we illustrate the design, fabrication, characterization, and application of a portable, low cost, and robust micropump, which brings solution to stable liquid delivery in microfluidic environment. The pump is designed with three optional speeds of different pumping flow rates, and it can be simply actuated by spring ...
DOI:
10.1002/elps.201800494

6. A smartphone‐based on‐site nucleic acid testing platform at point‐of‐care settings

Author:
Xu, Xiayu; Wang, Xuemin; Hu, Jie; Gong, Yang; Wang, Lin; Zhou, Wan; Li, XiuJun; Xu, Feng
Source:
Electrophoresis 2019 v.40 no.6 pp. 914-921
ISSN:
0173-0835
Subject:
color; colorimetry; disease course; electrophoresis; image analysis; infectious diseases; mobile telephones; nucleic acids; point-of-care systems; user interface
Abstract:
... We developed a smartphone‐based on‐site nucleic acid testing (NAT) platform that can image and analyze lateral flow nucleic acid assays at point‐of‐care settings. An inexpensive add‐on was devised to run lateral flow assays while providing homogeneous ambient light for imaging. In addition, an Android app with a user‐friendly interface was developed for the result analysis and management. Linear c ...
DOI:
10.1002/elps.201800449

7. Automatic detecting and counting magnetic beads‐labeled target cells from a suspension in a microfluidic chip

Author:
Song, Zhenyu; Li, Mengqi; Li, Bao; Yan, Yimo; Song, Yongxin
Source:
Electrophoresis 2019 v.40 no.6 pp. 897-905
ISSN:
0173-0835
Subject:
T-lymphocytes; blood sampling; data collection; electrophoresis; fluorescence; immunoassays; magnetic materials; magnetism; neoplasm cells; neoplasms; organ-on-a-chip
Abstract:
... A novel microfluidic method of continually detecting and counting beads‐labeled cells from a cell mixture without fluorescence labeling was presented in this paper. The detection system is composed of a microfluidic chip (with a permanent magnet inserted along the channel), a signal amplification circuit, and a LabView® based data acquisition device. The microfluidic chip can be functionally divid ...
DOI:
10.1002/elps.201800345

8. A valve‐based microfluidic device for on‐chip single cell treatments

Author:
Sun, Yue; Cai, Bo; Wei, Xiaoyun; Wang, Zixiang; Rao, Lang; Meng, Qian‐Fang; Liao, Qingquan; Liu, Wei; Guo, Shishang; Zhao, Xingzhong
Source:
Electrophoresis 2019 v.40 no.6 pp. 961-968
ISSN:
0173-0835
Subject:
bioassays; biomedical research; calcium; droplets; electrophoresis; hydrogels; sodium alginate; staining
Abstract:
... Assays toward single‐cell analysis have attracted the attention in biological and biomedical researches to reveal cellular mechanisms as well as heterogeneity. Yet nowadays microfluidic devices for single‐cell analysis have several drawbacks: some would cause cell damage due to the hydraulic forces directly acting on cells, while others could not implement biological assays since they could not im ...
DOI:
10.1002/elps.201800213

9. Dielectrophoretic choking phenomenon in a converging‐diverging microchannel for Janus particles

Author:
Zhou, Teng; Ji, Xiang; Shi, Liuyong; Zhang, Xianman; Deng, Yongbo; Joo, Sang Woo
Source:
Electrophoresis 2019 v.40 no.6 pp. 993-999
ISSN:
0173-0835
Subject:
dielectrophoresis; electric field; electrophoresis; nanoparticles
Abstract:
... The dielectrophoretic (DEP) choking phenomenon is revisited for Janus particles that are transported electrokinetically through a microchannel constriction by a direct‐current (DC) electric field. The negative DEP force that would block a particle with a diameter significantly smaller than that of the constriction at its inlet is seen to be relaxed by the rotation of the Janus particle in a direct ...
DOI:
10.1002/elps.201800368

10. Dielectrophoretic manipulation of nanomaterials: A review

Author:
Liu, Linbo; Chen, Ke; Xiang, Nan; Ni, Zhonghua
Source:
Electrophoresis 2019 v.40 no.6 pp. 873-889
ISSN:
0173-0835
Subject:
biosensors; dielectrophoresis; electrophoresis; microfluidic technology; nanomaterials
Abstract:
... Nanomaterials manipulation using dielectrophoresis (DEP) is one of the major research areas that could potentially benefit the micro/nano science for diverse applications, such as microfluidics, nanomachine, and biosensor. The innovation and development of basic theories, methods or applications will have a huge impact on the entire related field. Specifically, for DEP manipulation of nanomaterial ...
DOI:
10.1002/elps.201800342

11. Dielectrophoretic separation of microalgae cells in ballast water in a microfluidic chip

Author:
Wang, Yanjuan; Wang, Junsheng; Wu, Xudong; Jiang, Zong; Wang, Wei
Source:
Electrophoresis 2019 v.40 no.6 pp. 969-978
ISSN:
0173-0835
Subject:
Closterium; bacteria; ballast water; dielectrophoresis; electric field; electrodes; electrophoresis; microalgae; microparticles; microplastics; organ-on-a-chip
Abstract:
... The composition of the ship's ballast water is complex and contains a large number of microalgae cells, bacteria, microplastics, and other microparticles. To increase the accuracy and efficiency of detection of the microalgae cells in ballast water, a new microfluidic chip for continuous separation of microalgae cells based on alternating current dielectrophoresis was proposed. In this microfluidi ...
DOI:
10.1002/elps.201800302

12. Dispersion of charged solute in charged micro‐ and nanochannel with reversible sorption

Author:
Zhang, Li; Hesse, Marc A.; Wang, Moran
Source:
Electrophoresis 2019 v.40 no.6 pp. 838-844
ISSN:
0173-0835
Subject:
dispersibility; electrophoresis; solutes; sorption
Abstract:
... We study dispersion of a charged solute in a charged micro‐ and nanochannel with reversible sorption and derive an analytical solution for mass fraction in the fluid, transport velocity and dispersion coefficient. Electrical double layer formed on the charged surface gives rise to a charge‐dependent solute transport by modifying the transverse distribution of the solute. We discuss the effect of s ...
DOI:
10.1002/elps.201800334

13. Evaporative characteristics of sessile nanofluid droplet on micro‐structured heated surface

Author:
Zhu, Gui‐Ping; Ong, Kian‐Soo; Chong, Karen Siew‐Ling; Yao, Jia‐Feng; Huang, Hu‐Lin; Duan, Fei
Source:
Electrophoresis 2019 v.40 no.6 pp. 845-850
ISSN:
0173-0835
Subject:
ambient temperature; droplets; drying; electrophoresis; evaporation; graphene; heat; liquids; microstructure; nanofluids; nanoparticles; nickel
Abstract:
... Micro‐structure patterned substrates attract our attention due to the special and programmable wettabilities. The interaction between the liquid and micro/nano structures gives rise to controllable spreading and thus evaporation. For exploration of the application versatility, the introduction of nanoparticles in liquid droplet results in interaction among particles, liquid and microstructures. In ...
DOI:
10.1002/elps.201800364

14. Impedance‐based viscoelastic flow cytometry

Author:
Serhatlioglu, Murat; Asghari, Mohammad; Tahsin Guler, Mustafa; Elbuken, Caglar
Source:
Electrophoresis 2019 v.40 no.6 pp. 906-913
ISSN:
0173-0835
Subject:
electrophoresis; erythrocytes; flow cytometry; humans; polyethylene glycol; polystyrenes; viscoelasticity
Abstract:
... Elastic nature of the viscoelastic fluids induces lateral migration of particles into a single streamline and can be used by microfluidic based flow cytometry devices. In this study, we investigated focusing efficiency of polyethylene oxide based viscoelastic solutions at varying ionic concentration to demonstrate their use in impedimetric particle characterization systems. Rheological properties ...
DOI:
10.1002/elps.201800365

15. On hybrid electroosmotic kinetics for field‐effect‐reconfigurable nanoparticle trapping in a four‐terminal spiral microelectrode array

Author:
Ren, Yukun; Song, Chunlei; Liu, Weiyu; Jiang, Tianyi; Song, Jingni; Wu, Qisheng; Jiang, Hongyuan
Source:
Electrophoresis 2019 v.40 no.6 pp. 979-992
ISSN:
0173-0835
Subject:
electric potential difference; electrodes; electrolytes; electroosmosis; electrophoresis; fluorescence; hydrodynamics; nanoparticles; polystyrenes; trapping
Abstract:
... Induced‐charge electroosmosis (ICEO) has attracted tremendous popularity for driving fluid motion from the microfluidic community since the last decade, while less attention has been paid to ICEO‐based nanoparticle manipulation. We propose herein a unique concept of hybrid electroosmotic kinetics (HEK) in terms of bi‐phase ICEO (BICEO) actuated in a four‐terminal spiral electrode array, for effect ...
DOI:
10.1002/elps.201800325

16. Recent advances in microfluidic cell sorting techniques based on both physical and biochemical principles

Author:
Tang, Wenlai; Jiang, Di; Li, Zongan; Zhu, Liya; Shi, Jianping; Yang, Jiquan; Xiang, Nan
Source:
Electrophoresis 2019 v.40 no.6 pp. 930-954
ISSN:
0173-0835
Subject:
electrophoresis; flow cytometry; microfluidic technology
Abstract:
... Microfluidic technologies for isolating cells of interest from a heterogeneous sample have attracted great attentions, due to the advantages of less sample consumption, simple operating procedure, and high separation accuracy. According to the working principles, the microfluidic cell sorting techniques can be categorized into biochemical (labeled) and physical (label‐free) methods. However, the i ...
DOI:
10.1002/elps.201800361

17. Revisit of wall‐induced lateral migration in particle electrophoresis through a straight rectangular microchannel: Effects of particle zeta potential

Author:
Liu, Zhijian; Li, Di; Saffarian, Maryam; Tzeng, Tzuen‐Rong; Song, Yongxin; Pan, Xinxiang; Xuan, Xiangchun
Source:
Electrophoresis 2019 v.40 no.6 pp. 955-960
ISSN:
0173-0835
Subject:
electrophoresis; polystyrenes; zeta potential
Abstract:
... Previous studies have reported a lateral migration in particle electrophoresis through a straight rectangular microchannel. This phenomenon arises from the inherent wall‐induced electrical lift that can be exploited to focus and separate particles for microfluidic applications. Such a dielectrophoretic‐like force has been recently found to vary with the buffer concentration. We demonstrate in this ...
DOI:
10.1002/elps.201800198

18. Understanding flow enhancement in graphene‐coated nanochannels

Author:
Jin, Yakang; Tao, Ran; Li, Zhigang
Source:
Electrophoresis 2019 v.40 no.6 pp. 859-864
ISSN:
0173-0835
Subject:
Gibbs free energy; coatings; copper; copper nanoparticles; electrophoresis; flow resistance; graphene; hydrogen bonding; molecular dynamics; simulation models
Abstract:
... In this work, we investigate pressure‐driven water flows in graphene‐coated copper nanochannels through molecular dynamics simulations. It is found that the flow rate in bare copper nanochannel can be significantly enhanced by a factor of 45 when the nanochannel is coated with monolayer graphene. The enhancement factor for the flow rate reaches about 90 when the nanochannel is modified with 3 or m ...
DOI:
10.1002/elps.201800465