Micro- and Nanofluidics for Bionanoparticle Analysis, Volume II

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "B:Biology and Biomedicine".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 6671

Special Issue Editor


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Guest Editor
Materials Science and Engineering/Bioengineering, Lehigh University, 5 E. Packer Ave, Bethlehem, PA 18015, USA
Interests: microfluidics; biosensor; bioseparation; lab-on-a-chip; bioMEMS
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Special Issue Information

Dear Colleagues,

Bionanoparticles such as microorganisms and exosomes are recoganized as important targets for clinical applications, food safety, and environmental monitoring. Other nanoscale biological particles, includeing liposomes, micelles, and functionalized polymeric particles are widely used in nanomedicines. The recent deveopment of microfluidic and nanofluidic technologies has enabled the separation and anslysis of these species in a lab-on-a-chip platform, while there are still many challenges to address before these analytical tools can be adopted in practice. For example, the complex matrices within which these species reside in create a high background for their detection. Their small dimension and often low concentration demand creative strategies to amplify the sensing signal and enhance the detection speed. This Special Issue aims to recruit recent discoveries and developments of micro- and nanofluidic strategies for the processing and analysis of biological nanoparticles. The collection of papers will hopefully bring out more innovative ideas and fundamental insights to overcome the hurdles faced in the separation and detection of bionanoparticles.

Dr. Xuanhong Cheng
Guest Editor

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Keywords

  • Microfluidics
  • Nanofluidics
  • Biological Nanoparticles
  • Virus
  • Exosome
  • Liposome
  • Micelle
  • Lab-on-a-chip
  • Biosensing
  • Bioseparation

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Published Papers (2 papers)

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Research

12 pages, 2477 KiB  
Article
An Electrokinetically-Driven Microchip for Rapid Entrapment and Detection of Nanovesicles
by Leilei Shi and Leyla Esfandiari
Micromachines 2021, 12(1), 11; https://doi.org/10.3390/mi12010011 - 24 Dec 2020
Cited by 17 | Viewed by 3996
Abstract
Electrical Impedance Spectroscopy (EIS) has been widely used as a label-free and rapid characterization method for the analysis of cells in clinical research. However, the related work on exosomes (40–150 nm) and the particles of similar size has not yet been reported. In [...] Read more.
Electrical Impedance Spectroscopy (EIS) has been widely used as a label-free and rapid characterization method for the analysis of cells in clinical research. However, the related work on exosomes (40–150 nm) and the particles of similar size has not yet been reported. In this study, we developed a new Lab-on-a-Chip (LOC) device to rapidly entrap a cluster of sub-micron particles, including polystyrene beads, liposomes, and small extracellular vesicles (exosomes), utilizing an insulator-based dielectrophoresis (iDEP) scheme followed by measuring their impedance utilizing an integrated electrical impedance sensor. This technique provides a label-free, fast, and non-invasive tool for the detection of bionanoparticles based on their unique dielectric properties. In the future, this device could potentially be applied to the characterization of pathogenic exosomes and viruses of similar size, and thus, be evolved as a powerful tool for early disease diagnosis and prognosis. Full article
(This article belongs to the Special Issue Micro- and Nanofluidics for Bionanoparticle Analysis, Volume II)
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9 pages, 1971 KiB  
Article
Sequence-Specific Detection of DNA Strands Using a Solid-State Nanopore Assisted by Microbeads
by Yin Zhang, Zengdao Gu, Jiabin Zhao, Liying Shao and Yajing Kan
Micromachines 2020, 11(12), 1097; https://doi.org/10.3390/mi11121097 - 11 Dec 2020
Cited by 1 | Viewed by 2311
Abstract
Simple, rapid, and low-cost detection of DNA with specific sequence is crucial for molecular diagnosis and therapy applications. In this research, the target DNA molecules are bonded to the streptavidin-coated microbeads, after hybridizing with biotinylated probes. A nanopore with a diameter significantly smaller [...] Read more.
Simple, rapid, and low-cost detection of DNA with specific sequence is crucial for molecular diagnosis and therapy applications. In this research, the target DNA molecules are bonded to the streptavidin-coated microbeads, after hybridizing with biotinylated probes. A nanopore with a diameter significantly smaller than the microbeads is used to detect DNA molecules through the ionic pulse signals. Because the DNA molecules attached on the microbead should dissociate from the beads before completely passing through the pore, the signal duration time for the target DNA is two orders of magnitude longer than free DNA. Moreover, the high local concentration of target DNA molecules on the surface of microbeads leads to multiple DNA molecules translocating through the pore simultaneously, which generates pulse signals with amplitude much larger than single free DNA translocation events. Therefore, the DNA molecules with specific sequence can be easily identified by a nanopore sensor assisted by microbeads according to the ionic pulse signals. Full article
(This article belongs to the Special Issue Micro- and Nanofluidics for Bionanoparticle Analysis, Volume II)
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