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- Title
Design of a Digital LAMP Detection Platform Based on Droplet Microfluidic Technology.
- Authors
Jiang, Liying; Lan, Xianghao; Ren, Linjiao; Yang, Mingzhu; Wei, Bo; Wang, Yang
- Abstract
Loop-mediated isothermal amplification (LAMP) is a rapid and high-yield amplification technology for specific DNA or RNA molecules. In this study, we designed a digital loop-mediated isothermal amplification (digital-LAMP)-functioning microfluidic chip to achieve higher sensitivity for detection of nucleic acids. The chip could generate droplets and collect them, based on which we could perform Digital-LAMP. The reaction only took 40 min at a constant temperature of 63 °C. The chip enabled highly accurate quantitative detection, with the limit of detection (LOD) down to 102 copies μL−1. For better performance while reducing the investment of money and time in chip structure iterations, we used COMSOL Multiphysics to simulate different droplet generation ways by including flow-focusing structure and T-junction structure. Moreover, the linear structure, serpentine structure, and spiral structure in the microfluidic chip were compared to study the fluid velocity and pressure distribution. The simulations provided a basis for chip structure design while facilitating chip structure optimization. The digital-LAMP-functioning chip proposed in the work provides a universal platform for analysis of viruses.
- Subjects
FLUID pressure; LAMPS; DETECTION limit; SERPENTINE
- Publication
Micromachines, 2023, Vol 14, Issue 5, p1077
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi14051077