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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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Recent Advances in Metasurfaces: From THz Biosensing to Microwave Wireless Communications.

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Metamaterials and metasurfaces advance biosensing and wireless communication. These technologies offer enhanced electromagnetic wave manipulation for improved terahertz metasurface sensors in diagnostics and reconfigurable intelligent surfaces in 5G/6G systems.

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Area of Science:

  • Physics
  • Engineering
  • Materials Science

Background:

  • Metamaterials and metasurfaces enable precise electromagnetic wave manipulation via subwavelength structures.
  • Significant advancements have been achieved in biosensing and wireless communications utilizing these engineered materials.

Purpose of the Study:

  • To review the design and optimization of terahertz metasurface sensors for biomedical diagnostics.
  • To explore the application of metasurfaces as reconfigurable intelligent surfaces for microwave communications (5G/6G).
  • To provide an overview of challenges and future directions for metamaterial and metasurface technologies.

Main Methods:

  • Focus on design principles and optimization strategies for terahertz metasurface sensors.
  • Analysis of metasurface capabilities in dynamically modulating electromagnetic wave propagation.
  • Review of existing literature on metamaterial and metasurface applications in biosensing and communications.

Main Results:

  • Terahertz metasurface sensors offer unique advantages for biomedical diagnostics.
  • Metasurfaces, as reconfigurable intelligent surfaces, enhance signal quality and communication efficiency in microwave frequencies.
  • Identified key challenges in material selection, device integration, and sensor modification.

Conclusions:

  • Metamaterial and metasurface technologies hold significant promise for point-of-care diagnostic devices.
  • These technologies are crucial for advancing efficient communication systems, including 5G and future 6G networks.
  • Further research is needed to overcome current challenges and fully realize the potential of these applications.