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Showing 1 to 11 of 11 for “"Contactless Dielectrophoresis"”.
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High-Frequency Electronics for Contactless Dielectrophoresis
… the time required for many laboratory processes. Dielectrophoresis, or the motion of a polarized particle in the presence of a non-uniform electric field, has emerged as a promising method for biological sample concentration. By relying upon electrical properties that are intrinsic to a cell or …
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Contactless Dielectrophoresis towards Drug Screening and Microdevice Development for Cell Sorting
Firstly, this work demonstrates that contactless dielectrophoresis (cDEP) was useful to detect a reversal in the electrical phenotype of late-stage ovarian cancer cells to a profile similar to that of slow-growing early-stage ovarian epithelial cells after treatment with a non-toxic bioactive …
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Cell Phenotype Analyzer: Automated Techniques for Cell Phenotyping using Contactless Dielectrophoresis
… delves into biological cell phenotyping under a dielectrophoresis setup using computer vision. Dielectrophoresis is a well-known phenomenon in which dielectric particles are subjected to a non-homogeneous electric field. This work is an analytical part of a larger proposed system replete with …
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Marker-Free Isolation and Enrichment of Rare Cell Types Including Tumor Initiating Cells through Contactless Dielectrophoresis
… types based on their electrical signatures using dielectrophoresis (DEP) without having direct contact between the electrodes and the sample, known as contactless dielectrophoresis (cDEP). DEP is the motion of a particle in a suspending medium due to its polarization in the presence of a …
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Development of a Dielectrophoresis-Based Cancer-Cell Analysis Tool
… device that leverages the unique advantages of a contactless dielectrophoresis, a method that uses applied electric fields in a microfluidic device to separate cells by biophysical phenotype. By optimizing force balancing between the dielectrophoretic force and the drag force on cells in the …
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Exploiting Clausius-Mossotti Factor to Isolate Stages of Human Breast Cancer Cells: Theory and Experiment
This work demonstrates the ability of contactless dielectrophoresis (cDEP) for isolation of breast cancer cell stages. The ability to selectively concentrate breast tumor cells from a non-transformed or normal cell population is the key to successfully detecting tumors at an early stage of growth …
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A passive microfluidic device for continuous buffer exchange
Generally, dielectrophoresis (DEP) analysis of biological cell samples relies on the differing electrical parameters between the cells and the surrounding fluid medium. To achieve effective positive DEP manipulation and sorting of mammalian cells in suspension, it is required to resuspend the cells …
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Theoretical Considerations of Biological Systems in the Presence of High Frequency Electric Fields: Microfluidic and Tissue Level Implications
… of a new cell manipulation technique, termed contactless dielectrophoresis (cDEP). In this technique, cells are isolated from direct contact with metal electrodes by employing fluid electrode channels filled with a highly conductive media. Thin insulating barriers, approximately 20 μm, serve …
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Particle Manipulation Using Electric Field Gradients in Microdevices
… controlled movement caused by electroosmosis and dielectrophoresis with a net motion caused by a dielectrophoretic force. In the second application, the separation capabilities of different stages of breast cancer cells from the same cell line were tested using contactless dielectrophoretic (cDEP) …
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Lab on a chip rare cell isolation platform with dielectrophoretic smart sample focusing, automated whole cell tracking analysis script, and a bioinspired on-chip electroactive polymer micropump
Dielectrophoresis (DEP), an electrokinetic force, is the motion of a polarizable particle in a non-uniform electric field. Contactless DEP (cDEP) is a recently developed cell sorting and isolation technique that uses the DEP force by capacitavely coupling the electrodes across the channel. The cDEP …
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Microfluidic differentiation of subpopulations of cells based on their bioelectrical signature
… flows through the fluid. External forces such as dielectrophoresis, the motion of a particle due to its polarization in the presence of a non-uniform electric field, may also be applied. For instance, well-specified mixing or separation of particles can be achieved by using the combination of drag …