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Micromachines
Special Issues
Electrokinetic Phenomenon and Its Multiple Applications
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Electrokinetic Phenomenon and Its Multiple Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "C：Chemistry".

Deadline for manuscript submissions: closed (30 October 2023) | Viewed by 1058

Special Issue Editors

Prof. Dr. Juan G. Santiago

E-Mail Website
Guest Editor
Mechanical Engineering Department, Stanford University, 440 Escondido Mall, Stanford, CA 94305-3030, USA
Interests: electrokinetics; capacitive deionization; microfluidics; chemical analysis; desalination
Dr. Supreet Singh Bahga

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India
Interests: microfluidics; electrokinetics; electrohydrodynamics; micro-chip electrophoresis; lab-on-a-chip devices

Special Issue Information

Dear Colleagues,

Electrokinetic phenomenon has attracted significant interest due to its widespread applications in analytical chemistry, bioanalysis, energy conversion, water desalination, and environmental remediation. The advent of micro- and nano-fabrication technologies has led to further advances in the theory and applications of electrokinetic phenomenon, including electroosmosis, electrophoresis, dielectrophoresis, electrohydrodynamics, AC electrokinetics, and electrokinetics in porous media. Over the years, electrokinetics has become the preferred choice for transporting and manipulating fluids, ions, particles, droplets, cells, and biomolecules in miniaturized systems. This Special Issue seeks to showcase research papers, and review articles on fundamentals and high-impact applications of electrokinetic phenomenon. We welcome submissions on theoretical, numerical and experimental works and review articles focusing on diverse applications of electrokinetics, not limited to micro and nanofluidic devices.

Prof. Dr. Juan G. Santiago
Dr. Supreet Singh Bahga
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrical double layer
  • electroosmosis
  • electrophoresis
  • dielectrophoresis
  • electrohydrodynamics
  • AC electrokinetic
  • microfluidics and nanofluidics

Published Papers (1 paper)

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Research

12 pages, 7874 KiB  
Article
Assessing the Discriminatory Capabilities of iEK Devices under DC and DC-Biased AC Stimulation Potentials
by Nuzhet Nihaar Nasir Ahamed, Carlos A. Mendiola-Escobedo, Victor H. Perez-Gonzalez and Blanca H. Lapizco-Encinas
Micromachines 2023, 14(12), 2239; https://doi.org/10.3390/mi14122239 - 14 Dec 2023
Cited by 1 | Viewed by 772
Abstract
There is a rising need for rapid and reliable analytical methods for separating microorganisms in clinical and biomedical applications. Microscale-insulator-based electrokinetic (iEK) systems have proven to be robust platforms for assessing a wide variety of microorganisms. Traditionally, iEK systems are usually stimulated with [...] Read more.
There is a rising need for rapid and reliable analytical methods for separating microorganisms in clinical and biomedical applications. Microscale-insulator-based electrokinetic (iEK) systems have proven to be robust platforms for assessing a wide variety of microorganisms. Traditionally, iEK systems are usually stimulated with direct-current (DC) potentials. This work presents a comparison between using DC potentials and using DC-biased alternating-current (AC) potentials in iEK systems for the separation of microorganisms. The present study, which includes mathematical modeling and experimentation, compares the separation of bacterial and yeast cells in two distinct modes by using DC and DC-biased AC potentials. The quality of both separations, assessed in terms of separation resolution (Rs), showed a complete separation (Rs = 1.51) with the application of a DC-biased low-frequency AC signal but an incomplete separation (Rs = 0.55) with the application of an RMS-equivalent DC signal. Good reproducibility between experimental repetitions (<10%) was obtained, and good agreement (~18% deviation) was observed between modeling and experimental retention times. The present study demonstrates the potential of extending the limits of iEK systems by employing DC-biased AC potentials to perform discriminatory separations of microorganisms that are difficult to separate with the application of DC potentials. Full article
(This article belongs to the Special Issue Electrokinetic Phenomenon and Its Multiple Applications)
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