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Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He...
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Light-Addressable Photoelectrochemical Sensors for High-Throughput and Multiplex Detection: Principles, Applications,

Yukun Yang1, Fuguo Ge1, Xiangyu Yao1

  • 1School of Life Science, Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan 030006, China.

ACS Sensors
|January 30, 2026
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Summary

Light-addressable photoelectrochemical sensors (LAPECS) offer high-throughput, multiplexed detection by confining light-induced electron transfer. This review covers LAPECS principles, modes, and future solutions for diagnostics and monitoring.

Keywords:
design strategieselectrode substrateshigh-throughput analysislight-addressable photoelectrochemical sensormulti-electrode parallel modemultiple detectionrecognition elementssensing microarray chipsingle-electrode multi-channel partitioning

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Area of Science:

  • Analytical Chemistry
  • Sensor Technology
  • Biomedical Engineering

Background:

  • Light-addressable photoelectrochemical sensors (LAPECS) integrate photo-addressing and photoelectrochemical techniques for advanced detection.
  • LAPECS enable high-throughput and multiplexed detection by precisely controlling photoinduced electron transfer with programmable illumination.

Purpose of the Study:

  • To provide a comprehensive review of LAPECS, covering fundamental principles, components, and operational modes.
  • To discuss emerging solutions and address current challenges in LAPECS technology.
  • To outline future prospects and research directions for LAPECS.

Main Methods:

  • Review of fundamental principles and structural/functional components of LAPECS.
  • Summary of three representative operational modes: multi-electrode parallel, single-electrode multi-channel partitioning, and microarray chip-based.
  • Discussion of advanced recognition interfaces, miniaturized designs, and machine learning for data processing.

Main Results:

  • LAPECS demonstrate significant promise in biomedical diagnostics, environmental monitoring, and food safety analysis.
  • Emerging solutions aim to enhance specificity, reduce signal interference, and simplify integration complexity.
  • The review consolidates current knowledge and identifies key areas for future development.

Conclusions:

  • LAPECS represent a powerful platform for multiplexed sensing with broad application potential.
  • Addressing challenges in specificity, interference, and integration is crucial for advancing LAPECS.
  • Continued research in advanced materials, miniaturization, and data processing will drive future innovations in LAPECS.