研究目的
Investigating the advantages of dielectrophoresis (DEP) microelectrode configuration in terms of limiting undesirable effects of dielectric heating on cells and facilitating cell clustering for stable cell contact assemblies.
研究成果
The study demonstrates that lower kHz order frequencies are advantageous for facilitating cell clustering with less dielectric heating, providing stable cell contact configurations for applications in diagnostics, therapeutics, and research in cellular bioelectricity and intercellular interactions.
研究不足
The study is limited by the susceptibility of cells to heating effects at high frequencies, which could lead to inactivation or death. The temperature measurements were simulated and not experimentally measured due to technical constraints.
1:Experimental Design and Method Selection
The study comprises experimental work and mathematical modeling using COMSOL to establish parameters in a capillary-based microfluidic system for optimum cell–cell contact configurations.
2:Sample Selection and Data Sources
Yeast cells with a concentration of 5 × 10^7 cells/mL were prepared by suspension in deionized water (DIW).
3:List of Experimental Equipment and Materials
Glass microscope slide substrate, PDMS superstrate, function generator, optical microscope, oscilloscope.
4:Experimental Procedures and Operational Workflow
Yeast suspension was introduced into the microfluidic channel, followed by a buffer period before applying DEP force. Observations were made under bright field microscopy.
5:Data Analysis Methods
Numerical simulations of the Clausius-Mossoti factor, electric field, DEP force, electrical torque, and temperature rise were performed using COMSOL Multiphysics 5.1.
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