Content area

Abstract

In recent decades, electrokinetic handling of microparticles and biological cells found many applications ranging from biomedical diagnostics to microscale assembly. The integration of electrokinetic handling such as dielectrophoresis (DEP) greatly benefits microfluidic point-of-care systems as many modern assays require cell handling. Compared to traditional pump-driven microfluidics, typically used for DEP applications, centrifugal CD microfluidics provides the ability to consolidate various liquid handling tasks in self-contained discs under the control of a single motor. Therefore, it has significant advantages in terms of cost and reliability. However, to integrate DEP on a spinning disc, a major obstacle is transferring power to the electrodes that generate DEP forces. Existing solutions for power transfer lack portability and availability or introduce excessive complexity for DEP settings. We present a concept that leverages the compatibility of DEP and inductive power transfer to bring DEP onto a rotating disc without much circuitry. Our solution leverages the ongoing advances in the printed circuit board market to make low-cost cartridges (<$1) that can employ DEP, which was validated using yeast cells. The resulting DEPDisc platform solves the challenge that existing printed circuit board electrodes are reliant on expensive high-voltage function generators by boosting the voltage using resonant inductive power transfer. This work includes a device costing less than $100 and easily replicable with the information provided in the Supplementary material. Consequently, with DEPDisc we present the first DEP-based low-cost platform for cell handling where both the device and the cartridges are truly inexpensive.

Details

1009240
Title
A low-cost printed circuit board-based centrifugal microfluidic platform for dielectrophoresis
Publication title
Volume
11
Issue
1
Pages
23
Publication year
2025
Publication date
2025
Publisher
Springer Nature B.V.
Place of publication
London
Country of publication
Netherlands
Publication subject
ISSN
20961030
e-ISSN
20557434
Source type
Scholarly Journal
Language of publication
English
Document type
Journal Article
Publication history
 
 
Online publication date
2025-01-27
Milestone dates
2024-12-12 (Registration); 2024-10-08 (Received); 2024-12-01 (Accepted); 2024-11-11 (Rev-Recd)
Publication history
 
 
   First posting date
27 Jan 2025
ProQuest document ID
3159903851
Document URL
https://www.proquest.com/scholarly-journals/low-cost-printed-circuit-board-based-centrifugal/docview/3159903851/se-2?accountid=208611
Copyright
Copyright Springer Nature B.V. 2025
Last updated
2025-01-27
Database
ProQuest One Academic