Visualization of electrochemical reactions on microelectrodes using light-addressable potentiometric sensor imaging

Chen, Fang‐Ming; Yang, Qiaoyu; Jiang, Mingrui; Meng, Yao; Zhang, De-Wen; Wang, Jian

doi:10.1016/j.aca.2022.340237

Cited by 6 publications

(8 citation statements)

References 28 publications

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“…LAPS can also be applied to electrochemical reaction imaging. As shown in Figure c, Chen et al observe water electrolysis through LAPS, in which the size of the measurement area is 2 μm × 2 μm per pixel …”

Section: Technology Of High-resolution Imaging For Lapsmentioning

confidence: 99%

“…48 As shown in Figure 7b, the chemical image about single mesenchymal stem cell is obtained by LAPS with high spatial resolution (7 μm), which has the semiconductor of an InGaN/GaN layer. 97 Chemical reaction, such as enzymatic reaction 33,34 and electrochemical reaction, 70,107 is an important branch of LAPS application. LAPS is often used to study chemical imaging.…”

Section: Application Of High-resolution Laps For Biochemical Imagingmentioning

confidence: 99%

“…As shown in Figure 7c, Chen et al observe water electrolysis through LAPS, in which the size of the measurement area is 2 μm × 2 μm per pixel. 107 Accurate control of the injected solution is crucial in microfluidic technology. LAPS can provide an efficient, accurate, and pollution-free observation for microinterfaces within channels.…”

Section: Application Of High-resolution Laps For Biochemical Imagingmentioning

confidence: 99%

“…48,97,110 SOS LAPS seems to be very promising. In practical applications, the improvement of the imaging performance not only depends on spatial resolution 97,107 but also depends on the contact between the sample and the sensor surface, 109,110 where the former can be improved through strategies mentioned in Section 3.1 and the latter indicates the importance of appropriate sample fixation methods. Meanwhile, LAPS is an adaptable sensing technology for microfluidic systems, where it can serve as a reliable biochemical imaging technology for lab on chip systems based on its easy surface modification characteristics.…”

Section: Application Of High-resolution Laps For Biochemical Imagingmentioning

confidence: 99%

“…Chemical reaction, such as enzymatic reaction , and electrochemical reaction, , is an important branch of LAPS application. LAPS is often used to study chemical imaging.…”

Section: Technology Of High-resolution Imaging For Lapsmentioning

confidence: 99%

See 4 more Smart Citations

Light Addressable Potentiometric Sensors for Biochemical Imaging on Microscale: A Review on Optimization of Imaging Speed and Spatial Resolution

Luo,

Liu,

Chen

et al. 2023

ACS Omega

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Light addressable potentiometric sensors (LAPS) are a competitive tool for unmarked biochemical imaging, especially imaging on microscale. It is essential to optimize the imaging speed and spatial resolution of LAPS since the imaging targets of LAPS, such as cell, microfluidic channel, etc., require LAPS to image at the micrometer level, and a fast enough imaging speed is a prerequisite for the dynamic process involved in biochemical imaging. In this study, we discuss the improvement of LAPS in terms of imaging speed and spatial resolution. The development of LAPS in imaging speed and spatial resolution is demonstrated by the latest applications of biochemistry monitoring and imaging on the microscale.

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Section: Technology Of High-resolution Imaging For Lapsmentioning

confidence: 99%

Section: Application Of High-resolution Laps For Biochemical Imagingmentioning

confidence: 99%

Section: Application Of High-resolution Laps For Biochemical Imagingmentioning

confidence: 99%

Section: Application Of High-resolution Laps For Biochemical Imagingmentioning

confidence: 99%

“…Chemical reaction, such as enzymatic reaction , and electrochemical reaction, , is an important branch of LAPS application. LAPS is often used to study chemical imaging.…”

Section: Technology Of High-resolution Imaging For Lapsmentioning

confidence: 99%

See 3 more Smart Citations

Light Addressable Potentiometric Sensors for Biochemical Imaging on Microscale: A Review on Optimization of Imaging Speed and Spatial Resolution

Luo,

Liu,

Chen

et al. 2023

ACS Omega

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Electrodeposition Parameters Dramatically Influence the Morphology, Stability, and Performance of n‐Si/Pt Light‐Addressable Electrochemical Sensors

Hernandez,

Epright,

Terrero Rodríguez

et al. 2023

ChemElectroChem

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Light addressable electrochemical (LAE) sensors have seen great utility in the past several years because they enable multiple localized electrochemical measurements to be performed on a single macroscopic electrode, opening up applications in imaging, biosensing, surface patterning, and multiplexing. In this study, we investigated the effects of electrodeposition on the formation of LAE sensors formed between n‐Si and electrodeposited Pt. We prepared sensors by electrodepositing Pt onto freshly‐etched n‐Si under a variety of conditions, varying the Pt precursor concentration, electrodeposition time, supporting electrolyte, and potential waveform. We characterized the sensors using a combination of atomic force microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. This study shows that the electrodeposition parameters have a dramatic impact on the morphology of the electrodeposited surfaces, sensor stability, and sensitivity towards H2O2. Specifically, we observed that continuous Pt films prepared with a higher Pt precursor concentration were more stable and had better linearity, higher sensitivity, and broader dynamic range than those prepared with a lower Pt precursor concentration. The stability and increased H2O2 sensing performance correlate strongly with an increase in the Pt islands which make up the film. These data highlight that the morphology of the metal in semiconductor/metal junction LAE sensors has an impact on important performance metrics like stability and sensitivity. They also demonstrate the need for semiconductor/metal LAE sensors to be studied using micro‐ and nanoscale imaging techniques in order to more deeply understand their performance characteristics.

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Label-free determination of glypican-3 using PtPd@H-rGO nanocomposites decorated light-addressable potentiometric sensor

Li,

Zhou

et al. 2025

Bioelectrochemistry

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Visualization of electrochemical reactions on microelectrodes using light-addressable potentiometric sensor imaging

Cited by 6 publications

References 28 publications

Light Addressable Potentiometric Sensors for Biochemical Imaging on Microscale: A Review on Optimization of Imaging Speed and Spatial Resolution

Light Addressable Potentiometric Sensors for Biochemical Imaging on Microscale: A Review on Optimization of Imaging Speed and Spatial Resolution

Electrodeposition Parameters Dramatically Influence the Morphology, Stability, and Performance of n‐Si/Pt Light‐Addressable Electrochemical Sensors

Label-free determination of glypican-3 using PtPd@H-rGO nanocomposites decorated light-addressable potentiometric sensor

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