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Related Concept Videos

Microbial Biosensors01:17

Microbial Biosensors

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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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Related Experiment Video

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Surface Plasmon Resonance Biosensor Based on Smart Phone Platforms.

Yun Liu1, Qiang Liu1, Shimeng Chen1

  • 1School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, China.

Scientific Reports
|August 11, 2015
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Summary
This summary is machine-generated.

This study presents a portable fiber optic surface plasmon resonance (SPR) biosensor using smartphone technology. The device offers cost-effective and accurate detection for applications in medicine, health, and environmental monitoring.

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Area of Science:

  • Biomedical Engineering
  • Optoelectronics
  • Analytical Chemistry

Background:

  • Surface Plasmon Resonance (SPR) is a label-free optical technique for detecting molecular interactions.
  • Conventional SPR instruments are often bulky, expensive, and not easily portable.
  • There is a need for accessible and cost-effective biosensing platforms for widespread use.

Purpose of the Study:

  • To develop and validate a smartphone-based fiber optic SPR biosensor.
  • To demonstrate the feasibility of using smartphone components for SPR measurements.
  • To assess the performance of the developed biosensor for biological sample analysis.

Main Methods:

  • Fabrication of an SPR sensing element using a gold-coated silica capillary.
  • Integration of optical fibers and sensing element onto a smartphone case.
  • Utilizing smartphone LED flash for illumination and camera for detection.
  • Development of a smartphone application for data acquisition and analysis of refractive index changes.

Main Results:

  • Demonstrated a functional fiber optic SPR biosensor integrated with a smartphone.
  • Achieved accurate and repeatable measurements of antibody binding.
  • Validated experimental results against a commercial SPR instrument.
  • Showcased the potential for real-time refractive index monitoring.

Conclusions:

  • The smartphone-based SPR biosensor is a cost-effective, portable, and accurate platform.
  • This technology has significant potential for point-of-care diagnostics, health monitoring, and environmental sensing.
  • The developed system offers a user-friendly and accessible alternative to traditional SPR devices.