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Bioinspired Interfacial Modulation in Solid-State Nanochannels: Toward Accountable Environmental Sensing.

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Solid-state nanochannels mimic biological channels for environmental pollutant detection. They offer label-free sensing by controlling interfacial variables for accurate monitoring of ions, organic pollutants, and microbes.

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Area of Science:

  • Environmental Science
  • Materials Science
  • Analytical Chemistry

Background:

  • Accurate environmental pollutant monitoring is vital for public health and ecosystems.
  • Biological ion channels inspire solid-state nanochannels for sensing applications.
  • Nanochannels transduce recognition events into measurable ion-transport signatures.

Purpose of the Study:

  • To review advances in solid-state nanochannel sensing for environmental monitoring over the past 5 years.
  • To organize progress based on controlling steric hindrance, surface charge, and wettability.
  • To discuss challenges and future directions for quantitative analysis in complex environmental matrices.

Main Methods:

  • Highlighting design strategies and operating principles of nanochannel sensors.
  • Summarizing analytical performance for detecting ions, gases, organic micropollutants, and microorganisms.
  • Analyzing interfacial modulation under nanoconfinement.

Main Results:

  • Nanochannels offer label-free detection inspired by biological ion channels.
  • Control over steric hindrance, surface charge, and wettability is key for signal formation.
  • Successful applications demonstrated for diverse environmental analytes.

Conclusions:

  • Solid-state nanochannels are promising for real-time environmental monitoring.
  • Overcoming challenges in quantitative analysis is crucial for field applications.
  • Future research should focus on robustness, interpretability, and interference resistance.