Recent Advances in Flexible Field‐Effect Transistors toward Wearable Sensors

Li, Ming-Zheng; Han, Su‐Ting; Zhou, Ye

doi:10.1002/aisy.202000113

Cited by 59 publications

(47 citation statements)

References 270 publications

(422 reference statements)

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“…After adding a high concentration of Test DNA for completely non-complementary pairing, the photocurrent did not decrease significantly, while the photocurrent of the fully complementary pairing control group at the same concentration reduce to 1.1 µA, indicating that the constructed PEC detection method had good specificity for T-DNA. In the future, the ITO substrate could be replaced by a flexible material, such as conductive polymers [25], and then the prepared PEC biosensors could be used as portable detection devices.…”

Section: Methods Specificity Testmentioning

confidence: 99%

Construction of Photoelectrochemical DNA Biosensors Based on TiO2@Carbon Dots@Black Phosphorous Quantum Dots

et al. 2021

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In this work, carbon dots (CDs) and black phosphorus quantum dots (BPQDs) were used to decorate titanium dioxide to enhance the photoelectrochemical (PEC) properties of the nanocomposites (TiO2@CDs@BPQDs), and the modified nanocomposites were used to sensitively detect DNA. We used the hydrothermal method and citric acid as a raw material to prepare CDs with good dispersion and strong fluorescence properties. BPQDs with a uniform particle size were prepared from black phosphorus crystals. The nanocomposites were characterized by fluorescence spectroscopy, UV-Vis absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). The preparation method of the working electrode was explored, the detection conditions were optimized, and the sensitive detection of target DNA was achieved. The results demonstrate that CDs and BPQDs with good optical properties were successfully prepared, and they were successfully combined with TiO2 to improve the PEC performance of TiO2@CDs@BPQDs. The TiO2-based PEC DNA detection method was constructed with a detection limit of 8.39 nM. The constructed detection method has many advantages, including good sensitivity, a wide detection range, and good specificity. This work provides a promising PEC strategy for the detection of other biomolecules.

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Section: Methods Specificity Testmentioning

confidence: 99%

Construction of Photoelectrochemical DNA Biosensors Based on TiO2@Carbon Dots@Black Phosphorous Quantum Dots

et al. 2021

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“…A similar tripartite arrangement for WEBs' electrodes is applied in either transistor (e.g., field-effect transistors, FETs) or electrochemical cells (e.g., screen-printed electrodes, SPEs) (Fig. 3a , g ): i) point for control of the electrochemical energy (i.e., G in FETs or RE in SPEs), ii) point for energy inlet (i.e., S in FETs or WE in SPEs) and iii) point for energy outlet (i.e., D in FETs or CE in SPEs) [ 79 – 81 ]. Of course, the three quoted categories are relative to the measurement format and associated carriers' charge movement, in such a way that most of them for sweat monitoring have a coplanar disposition concerning the control/inlet/outlet electrodes.…”

Section: Wearable Epidermal Biosensors (Webs) Design and Mode Of Func...mentioning

confidence: 99%

“…FETs are solid-state electrodes that commonly operate by a tunable 2–30 V. These kinds of transistors have efficient electrical power consumption, emit negligible heat, and, as any transistor, may self-amplify the electrical signals [ 81 , 87 , 119 ]. WEBs based on FETs have a basic architecture that contains a tripartite terminal system (i.e., G, S & D) and a semiconductor channel that serves as a bridge for electric flow between S and D (Fig.…”

Section: Wearable Epidermal Biosensors (Webs) Design and Mode Of Func...mentioning

confidence: 99%

“…Then, the inlet signal I GS is altered, modifying the outlet I DS into the channel, amplified for further readout processing. In brief, if any of the three parameters V DS , I DS , or V GS vary, the other two will fine-tune their behavior either linearly, e.g., any V GS increase leads to a significatively I DS increase or saturated, e.g., I DS is not modified despite any increase in any V DS [ 79 , 81 ]. In a transfer plot (Fig.…”

Section: Wearable Epidermal Biosensors (Webs) Design and Mode Of Func...mentioning

confidence: 99%

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Wearable electrochemical biosensors to measure biomarkers with complex blood-to-sweat partition such as proteins and hormones

Pérez

Orozco

2022

Microchim Acta

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Smart electronic devices based on micro-controllers, also referred to as fashion electronics, have raised wearable technology. These devices may process physiological information to facilitate the wearer's immediate biofeedback in close contact with the body surface. Standard market wearable devices detect observable features as gestures or skin conductivity. In contrast, the technology based on electrochemical biosensors requires a biomarker in close contact with both a biorecognition element and an electrode surface, where electron transfer phenomena occur. The noninvasiveness is pivotal for wearable technology; thus, one of the most common target tissues for real-time monitoring is the skin. Noninvasive biosensors formats may not be available for all analytes, such as several proteins and hormones, especially when devices are installed cutaneously to measure in the sweat. Processes like cutaneous transcytosis, the paracellular cell–cell unions, or even reuptake highly regulate the solutes content of the sweat. This review discusses recent advances on wearable devices based on electrochemical biosensors for biomarkers with a complex blood-to-sweat partition like proteins and some hormones, considering the commented release regulation mechanisms to the sweat. It highlights the challenges of wearable epidermal biosensors (WEBs) design and the possible solutions. Finally, it charts the path of future developments in the WEBs arena in converging/emerging digital technologies. Graphical abstract

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“…This attractive factor of high current on/off ratios plays an important role in sensor response time. The higher the current on/off ratios, the faster the response speed of the sensor [ 215 ].…”

Section: Transition Metal Dichalcogenides (Tmds)-based Fetsmentioning

confidence: 99%

Ten Years Progress of Electrical Detection of Heavy Metal Ions (HMIs) Using Various Field-Effect Transistor (FET) Nanosensors: A Review

et al. 2021

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Heavy metal pollution remains a major concern for the public today, in line with the growing population and global industrialization. Heavy metal ion (HMI) is a threat to human and environmental safety, even at low concentrations, thus rapid and continuous HMI monitoring is essential. Among the sensors available for HMI detection, the field-effect transistor (FET) sensor demonstrates promising potential for fast and real-time detection. The aim of this review is to provide a condensed overview of the contribution of certain semiconductor substrates in the development of chemical and biosensor FETs for HMI detection in the past decade. A brief introduction of the FET sensor along with its construction and configuration is presented in the first part of this review. Subsequently, the FET sensor deployment issue and FET intrinsic limitation screening effect are also discussed, and the solutions to overcome these shortcomings are summarized. Later, we summarize the strategies for HMIs’ electrical detection, mechanisms, and sensing performance on nanomaterial semiconductor FET transducers, including silicon, carbon nanotubes, graphene, AlGaN/GaN, transition metal dichalcogenides (TMD), black phosphorus, organic and inorganic semiconductor. Finally, concerns and suggestions regarding detection in the real samples using FET sensors are highlighted in the conclusion.

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Recent Advances in Flexible Field‐Effect Transistors toward Wearable Sensors

Cited by 59 publications

References 270 publications

Construction of Photoelectrochemical DNA Biosensors Based on TiO2@Carbon Dots@Black Phosphorous Quantum Dots

Construction of Photoelectrochemical DNA Biosensors Based on TiO2@Carbon Dots@Black Phosphorous Quantum Dots

Wearable electrochemical biosensors to measure biomarkers with complex blood-to-sweat partition such as proteins and hormones

Ten Years Progress of Electrical Detection of Heavy Metal Ions (HMIs) Using Various Field-Effect Transistor (FET) Nanosensors: A Review

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