Graphene Composite Based Flexible Sensors for Wearable Applications DOI Creative Commons

Lecheng Jiang

Science and Technology of Engineering Chemistry and Environmental Protection, Journal Year: 2024, Volume and Issue: 1(10)

Published: Dec. 31, 2024

mwymwAbstract:In recent years, flexible wearable sensors have received widespread attention for their potential application value in motion monitoring, healthcare and human-computer interaction. Graphene, as a two-dimensional zero-bandgap semi-metallic material, is an ideal material the preparation of due to its high carrier mobility, mechanical flexibility, biocompatibility. Based on target species performance requirements, researchers utilize graphene redox products form carbon nanocomposites by combining them with polymers, metals other substrates through specific methods. This helps increase number active sites functional groups modified graphene, achieving dispersion functionalization graphene. Such materials can effectively solve current problems low sensitivity poor sustainability faced pure field promote maturity next-generation electronic diversified directions. review starts from types classic methods composites. Then it elaborates principles applications existing pressure/strain, biological, humidity composites based sensors. Finally, paper comprehensively summaries challenges at present stage proposes future development trends.

Language: Английский

Flexible Graphene Field-Effect Transistors and Their Application in Flexible Biomedical Sensing DOI Creative Commons
Mingyuan Sun, Shuai Wang,

Yanbo Liang

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Oct. 7, 2024

Flexible electronics are transforming our lives by making daily activities more convenient. Central to this innovation field-effect transistors (FETs), valued for their efficient signal processing, nanoscale fabrication, low-power consumption, fast response times, and versatility. Graphene, known its exceptional mechanical properties, high electron mobility, biocompatibility, is an ideal material FET channels sensors. The combination of graphene FETs has given rise flexible (FGFETs), driving significant advances in sparked a strong interest biomedical Here, we first provide brief overview the basic structure, operating mechanism, evaluation parameters FGFETs, delve into selection patterning techniques. ability FGFETs sense strains biomolecular charges opens up diverse application possibilities. We specifically analyze latest strategies integrating wearable implantable sensors, focusing on key aspects constructing high-quality Finally, discuss current challenges prospects applications This review will valuable insights inspiration ongoing research improve quality broaden sensing.

Language: Английский

Citations

7
An updated review on the development of a nanomaterial-based field-effect transistor-type biosensors to detect exosomes for cancer diagnosis DOI
Jeongyun An, Hyunjun Park,

Minyoung Ju

et al.

Talanta, Journal Year: 2024, Volume and Issue: 279, P. 126604 - 126604

Published: July 22, 2024

Language: Английский

Citations

4
A dual-wavelength ratiometric photoelectrochemical sensor based on molecularly imprinted polymer via differential strategy DOI
Qiao Zhang, Yu Lei, Xiangguo Yue

et al.

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 419, P. 136387 - 136387

Published: July 30, 2024

Language: Английский

Citations

4
Dipole-induced transitions from Schottky to Ohmic contact at Janus MoSiGeN4/metal interfaces DOI

Wen Ai,

Xiaohui Hu, Tao Xu

et al.

Nanoscale Horizons, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Janus MoSiGeN4 monolayers exhibit exceptional mechanical stability and high electron mobility, which make them a promising channel candidate for field-effect transistors (FETs). However, the Schottky barrier at contact interface would limit carrier injection efficiency degrade device performance. Herein, using density functional theory calculations machine learning methods, we investigated interfacial properties of monolayer metal electrode contacts. The results demonstrated that n-type/p-type n-type Ohmic contacts can be realized in metal/MoSiGeN4 by changing built-in electric dipole orientation MoSiGeN4. Specifically, type Cu/MoSiGeN4 (Au/MoSiGeN4) transfers from an (p-type Schottky) to (n-type when side switches Si-N Ge-N. In addition, Fermi level pinning (FLP) effect with is weaker than Ge-N due intrinsic dipole. Notably, simplified mathematical expression ΔV/WM developed describe height interfaces method. These findings offer valuable guidance design development high-performance MoSiGeN4-based electronic devices.

Language: Английский

Citations

0
Impacts of capacitive current on electrolyte-gated graphene field-effect transistor arrays DOI Creative Commons
Shota Ushiba,

Tomomi Nakano,

Yuka Tokuda

et al.

Applied Physics Express, Journal Year: 2025, Volume and Issue: 18(2), P. 025003 - 025003

Published: Jan. 31, 2025

Abstract We investigate the effect of gate-source current ( I GS ) on variations in Dirac point voltage V DP electrolyte-gated graphene field-effect transistor (EG-GFET) arrays through a time-resolved analysis and an equivalent circuit model. Source/drain electrodes exposed to electrolyte induce substantial capacitive prolonged charging duration electric double-layer capacitance, which leads position-dependent variation relative gate electrode. The electrode-passivation alleviates by significantly reducing associated time. These findings offer critical insights for design integrated EG-GFET arrays.

Language: Английский

Citations

0
Liquid-Gated Graphene Field Effect Transistor for High-Performance Label-Free Sensing of Polycyclic Aromatic Hydrocarbons DOI Creative Commons
Cuiyun Kou, Xiaofeng Xu, Yu Bao

et al.

Chemosensors, Journal Year: 2025, Volume and Issue: 13(2), P. 56 - 56

Published: Feb. 7, 2025

Polycyclic aromatic hydrocarbons (PAHs) are one of the most toxic environmental pollutants, which very harmful to human body. It is crucial find convenient and effective detection methods PAHs for preventing controlling pollution. Low-dimensional material-based field effect transistor (FET) sensors exhibit advantages a small size, simple structure, fast response, high sensitivity. In this work, graphene (Gr) has been selected as channel material FET PAH detections. Through π-π electron stacking interactions, could be spontaneously adsorbed on surface Gr affect its electronic carrier transport behavior. Based relationship between concentrations changes in Dirac point Gr, sensor achieved an response broad range from 10−10 10−6 mol/L limit was obtained, lower than that provided by World Health Organization (3.46 × 10−9 mol/L), drinking water. The results demonstrate great application analysis, provide important way rapid situ monitoring PAHs.

Language: Английский

Citations

0
Accurate Diagnosis of Pancreatic Ductal Adenocarcinoma by Detection of miRNA‐196a Biomarker in Exosome Using Solution‐Gated Graphene Transistor with Antifouling Design DOI Open Access
Peng Song, Junqi Dong, Tingting Yu

et al.

Advanced Healthcare Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

The accurate diagnosis of pancreatic ductal adenocarcinoma (PDAC) suffers low specify, and sensitivity biomarker detection. In complex biological fluid environments, nonspecific adsorption is prevalent, posing challenges to the detection biomarkers at concentrations. Herein, a highly sensitive selective solution-gated graphene transistor (SGGT) fabricated for miRNA-196a in exosomes diagnose PDAC. antifouling modification on surface gate electrode employed through using bovine serum albumin as common sealing agent poly adenine (polyA8) enhance hydrophilicity. effect background noise effectively reduced. limit reached 1.82 × 10-19 m without need labeling or amplification, time within 25 min. clinical experiments verify that receiver operating characteristic curve values are higher than carbohydrate antigen 19-9 biomarker, high 0.98. can well distinguish PDAC from non-PDAC subjects. SGGT sensor platform demonstrates significant potential milieu samples.

Language: Английский

Citations

0
A PEG-based strategy to improve detection of clinical microRNA 155 by bio-Field Effect Transistor in high ionic strength environment DOI Creative Commons
Francesco Lavecchia di Tocco, Salvatore Cannistraro, Anna Rita Bizzarri

et al.

Talanta, Journal Year: 2025, Volume and Issue: 292, P. 127881 - 127881

Published: March 11, 2025

microRNAs are small oligonucleotides involved in post-transcriptional gene regulation whose alteration is found several diseases, including cancer, and therefore their detection crucial for diagnosis, prognosis, treatment purposes. Field-Effect Transistor-based biosensors (bioFETs) represent a promising technology the clinical of microRNAs. However, one main challenges associated with this Debye screening, becoming significant at high ionic strengths required effective hybridization. We aimed detecting oncogenic microRNA-155 by using bioFET system as capture element complementary RNA probe (antimiR-155) combined introduction PEG molecules (20 kDa, PEG20), an strength 300 mM. optimized co-immobilization ratio between antimiR-155 PEG20 assessed its impact on interactions oligonucleotides. The kinetics can be well described Langmuir-Freundlich isotherm affinity constant within range typical nucleic acid interactions. significantly enhanced sensitivity miR-155 reaching level less than 200 pM, together excellent discrimination against other clinically relevant Our findings demonstrate that incorporation constitutes strategy to mitigate screening effects facilitates bioFET-based applications physiological strengths.

Language: Английский

Citations

0
Graphene Photoelectrochemical Transistor for Dual‐Directional Signal‐on Biosensing DOI
Chengshuang Wang, Yue Jiang, Zheng Li

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Abstract Recent research has demonstrated the potential of photogating in regulating characteristics photoelectrochemical transistors. Here it is reported graphene transistor (GPECT) with dual‐directional signal‐on biosensing as exemplified by channel gated p/n‐type metal–organic frameworks (MOFs) upon light illumination toward aptasensing. Due to shift Dirac point induced MOFs, operation mutually verifiable dual readout could be achieved. For aptasensing, assistance biocatalytic precipitation reaction, such a device validated for highly sensitive detection thrombin limits low 5.2 and 0.1 f m , respectively. This study demonstrates not only general protocol GPECTs but also unique novel optoelectronics.

Language: Английский

Citations

0
Aminophenol Molecular Capture Layer for Specific Molecular Sensing with Field-Effect Devices DOI

Pooja Verma,

Yuval Ben‐Shahar, Soumadri Samanta

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

There is an urgent need today for interface management with recognition layers composed of short receptor molecules, excellent specificity and affinity toward a target molecule, wide range sensing applications. The current work demonstrates specific detection G-type nerve agent, which based on nucleophilic substitution reaction between the surface-bound 4-amino-2-((dimethylamino)methyl)phenol (amino-2-DMAMP) receptors diethyl chlorophosphate (DCP) simulant. 2-DMAMP DCP are demonstrated 31P-nuclear magnetic resonance (NMR) electrospray ionization mass spectrometry (ESI-MS/MS). proposed layer utilized through design realization electronic chemosensor using meta-nanochannel field-effect transistor (MNC FET). SiO2 area MNC FET functionalized amino-2-DMAMP amine-based chemistry, response quantified. An demonstrated, coupled limit 1 pg/mL, dynamic 8 orders magnitude, linearity sensitivity. high grade pave way to specific, label-free, quantitative, low-cost, easy-to-operate, field-deployable sensors.

Language: Английский

Citations

0