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Related Concept Videos

Microbial Biosensors01:17

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

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A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
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Published on: October 15, 2013

Microfluidic cellular and molecular detection for Lab-on-a-Chip applications.

Abraham P Lee1

  • 1Department of Biomedical Engineering, University of California at Irvine, 3120 Natural Sciences II, Irvine, CA 92697-2715, USA.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|December 8, 2009
PubMed
Summary

Lab on a Chip technology offers sensitive detection of DNA, proteins, and cells. Microfluidic devices enable high-throughput analysis for molecular diagnostics and cell sorting.

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Area of Science:

  • Biotechnology
  • Microfluidics
  • Analytical Chemistry

Background:

  • Lab on a Chip (LOC) technology enables high-throughput cellular and molecular detection and manipulation.
  • Microfluidic systems enhance sensitivity and specificity through controlled separation, purification, sorting, and mixing.
  • LOC devices are crucial for advancing molecular diagnostics and cell analysis.

Purpose of the Study:

  • To demonstrate the capabilities of Lab on a Chip technology for detecting DNA, proteins, and cells.
  • To showcase advancements in microfluidic techniques for molecular and cellular analysis.
  • To present novel microfluidic devices for sensitive and specific biological detection.

Main Methods:

  • Utilized a droplet microfluidic platform for rapid, homogenous mixing and DNA detection via fluorescence imaging.
  • Employed an acoustic cavity mixer to significantly increase the speed of protein detection.
  • Developed a novel microfluidic device utilizing dielectrophoresis (DEP) for cell detection and sorting.

Main Results:

  • Achieved rapid, homogenous mixing in picoliter volumes for DNA molecular hybridization detection.
  • Demonstrated an order of magnitude increase in protein detection speed using an acoustic cavity mixer.
  • Successfully detected and sorted biological cells based on their dielectric properties using a DEP microfluidic device.

Conclusions:

  • Lab on a Chip technology provides powerful tools for sensitive, high-throughput molecular and cellular analysis.
  • Microfluidic innovations, including droplet, acoustic, and DEP-based devices, significantly enhance detection capabilities.
  • These advancements hold promise for applications in diagnostics, drug discovery, and cell biology.