Results 91 to 100 of about 15,383 (199)

Bacterial handling under the influence of non-uniform electric fields: dielectrophoretic and electrohydrodynamic effects

open access: yesAnais da Academia Brasileira de Ciências, 2008
This paper describes the modeling and experimental verification of a castellated microelectrode array intended tohandle biocells, based on common dielectrophoresis. The proposed microsystem was developed employing platinumelectrodes deposited by lift-off,
Flavio H. Fernádez-Morales   +2 more
doaj   +1 more source

Development of a single cell spherical shell model for an investigation of electrical properties with a computing program [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2005
A spherical double shell model (SDM) for a single cell has been developed, using Laplace’s equation in spherical coordinates and boundary conditions. Electric field intensities and dielectric constants of each region inside and outside of the cell have ...
Boonlamp, M., Bunthawin, S.
doaj  

A Microfluidic Chip for Liquid Metal Droplet Generation and Sorting

open access: yesMicromachines, 2017
A liquid metal based microfluidic system was proposed and demonstrated for the generation and sorting of liquid metal droplets. This micro system utilized silicon oil as the continuous phase and Ga66In20.5Sn13.5 (66.0 wt % Ga, 20.5 wt % In, 13.5 wt % Sn,
Lu Tian, Meng Gao, Lin Gui
doaj   +1 more source

Dielectric behavior of oblate spheroidal particles: Application to erythrocytes suspensions

open access: yes, 2002
We have investigated the effect of particle shape on the eletrorotation (ER) spectrum of living cells suspensions. In particular, we consider coated oblate spheroidal particles and present a theoretical study of ER based on the spectral representation ...
Huang, J. P., Yu, K. W.
core   +1 more source

Rapid (<5 min) identification of pathogen in human blood by electrokinetic concentration and surface-enhanced Raman spectroscopy. [PDF]

open access: yes, 2013
This study reports a novel microfluidic platform for rapid and long-ranged concentration of rare-pathogen from human blood for subsequent on-chip surface-enhanced Raman spectroscopy (SERS) identification/discrimination of bacteria based on their detected
Chang, Hsien-Chang   +4 more
core  

Probing Contaminant-Induced Alterations in Chlorophyll Fluorescence by AC-Dielectrophoresis-Based 2D-Algal Array

open access: yesBiosensors, 2018
The investigation of contaminant impact on algae requires rapid and reliable cell collection and optical detection. The capability of alternative current (AC) dielectrophoresis (DEP) collection of whole cell arrays with combined fluorescence microscopy ...
Coralie Siebman   +2 more
doaj   +1 more source

Computer Simulations of Charged Colloids in Alternating Electric Fields

open access: yes, 2013
We briefly review recent theoretical and simulation studies of charged colloidal dispersions in alternating electric fields (AC fields). The response of single colloid to an external field can be characterized by a complex polarizability, which describes
Schmid, Friederike, Zhou, Jiajia
core   +1 more source

Microfluidics-Based Approaches to the Isolation of African Trypanosomes

open access: yesPathogens, 2017
African trypanosomes are responsible for significant levels of disease in both humans and animals. The protozoan parasites are free-living flagellates, usually transmitted by arthropod vectors, including the tsetse fly. In the mammalian host they live in
Michael P. Barrett   +6 more
doaj   +1 more source

Dielectrophoresis Aligned Single-Walled Carbon Nanotubes as pH Sensors

open access: yesBiosensors, 2011
Here we report the fabrication and characterization of pH sensors using aligned single-walled carbon nanotubes (SWNTs). The SWNTs are dispersed in deionized (DI) water after chemical functionalization and filtration.
Wei Xue   +3 more
doaj   +1 more source

Controlled Electrokinetic Particle Manipulation using Paper-and-Pencil Microfluidics

open access: yes, 2018
Dielectrophoresis is a very promising technique for particle manipulation on a chip. In this study, we demonstrate a controlled mannuvering of polystryrene particles on a simple paper-and-pencil based device by exploiting the underlying electrokinetics ...
Chakraborty, Suman   +4 more
core   +1 more source

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