scholarly journals Recent Advances in MXene Nanocomposite-Based Biosensors

Biosensors ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 185 ◽  
Author(s):  
Jinho Yoon ◽  
Minkyu Shin ◽  
Joungpyo Lim ◽  
Ji-Young Lee ◽  
Jeong-Woo Choi
Keyword(s):  
Inorganic Compounds ◽  
High Sensitivity ◽  
High Conductivity ◽  
Optical Biosensors ◽  
Electrochemical Biosensors ◽  
Synthesis Methods ◽  
Two Dimensional ◽  
Recent Advances ◽  
Sensitivity And Selectivity

The development of advanced biosensors with high sensitivity and selectivity is one of the most demanded concerns in the field of biosensors. To meet this requirement, up until now, numerous nanomaterials have been introduced to develop biosensors for achieving high sensitivity and selectivity. Among the latest nanomaterials attracting attention, MXene is one of the best materials for the development of biosensors because of its various superior properties. MXenes are two-dimensional inorganic compounds with few atomic layers that possess excellent characteristics including high conductivity and superior fluorescent, optical, and plasmonic properties. In this review, advanced biosensors developed on the basis of the MXene nanocomposite are discussed with the selective overview of recently reported studies. For this, introduction of the MXene including the definition, synthesis methods, and its properties are discussed. Next, MXene-based electrochemical biosensors and MXene-based fluorescent/optical biosensors are provided, which are developed on the basis of the exceptional properties of the MXene nanocomposite. This review will suggest the direction for use of the Mxene nanocomposite to develop advanced biosensors with high sensitivity and selectivity.

scholarly journals Recent advances in mode-locked fiber lasers based on two-dimensional materials

Nanophotonics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 2315-2340 ◽  
Author(s):  
Junli Wang ◽  
Xiaoli Wang ◽  
Jingjing Lei ◽  
Mengyuan Ma ◽  
Cong Wang ◽  
...  
Keyword(s):  
Fiber Lasers ◽  
2D Materials ◽  
Synthesis Methods ◽  
Two Dimensional ◽  
New Materials ◽  
Saturable Absorbers ◽  
Operating Wavelength ◽  
Recent Advances ◽  
Two Dimensional Materials ◽  
Diverse Mode

AbstractDue to the unique properties of two-dimensional (2D) materials, much attention has been paid to the exploration and application of 2D materials. In this review, we focus on the application of 2D materials in mode-locked fiber lasers. We summarize the synthesis methods for 2D materials, fiber integration with 2D materials and 2D materials based saturable absorbers. We discuss the performance of the diverse mode-locked fiber lasers in the typical operating wavelength such as 1, 1.5, 2 and 3 μm. Finally, a summary and outlook of the further applications of the new materials in mode-locked fiber lasers are presented.

Recent advances in electrochemical biosensors based on graphene two-dimensional nanomaterials

2016 ◽  
Vol 76 ◽  
pp. 195-212 ◽  
Author(s):  
Yang Song ◽  
Yanan Luo ◽  
Chengzhou Zhu ◽  
He Li ◽  
Dan Du ◽  
...  
Keyword(s):  
Electrochemical Biosensors ◽  
Two Dimensional ◽  
Recent Advances

Conducting polymer based electrochemical biosensors

2016 ◽  
Vol 18 (12) ◽  
pp. 8264-8277 ◽  
Author(s):  
Nihan Aydemir ◽  
Jenny Malmström ◽  
Jadranka Travas-Sejdic
Keyword(s):  
Conducting Polymer ◽  
High Sensitivity ◽  
Cost Effective ◽  
Electrochemical Biosensors ◽  
Sensitivity And Selectivity ◽  
Biological Analytes

Conducting polymer (CP)-based electrochemical biosensors have gained great attention as such biosensor platforms are easy and cost-effective to fabricate, and provide a direct electrical readout of the presence of biological analytes with high sensitivity and selectivity.

scholarly journals Monitoring Biomaterials with Light: Review of Surface Plasmon Resonance Biosensing Using two Dimensional Materials

2021 ◽  
Author(s):  
Parsa Yari ◽  
Homa Farmani ◽  
Ali Farmani ◽  
Amir Mosavi
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
High Sensitivity ◽  
Optical Biosensors ◽  
Two Dimensional ◽  
Plasmonic Sensors ◽  
Analysis Instrument ◽  
Two Dimensional Materials ◽  
Fiber Optical

The purpose of this paper is to present advanced techniques in optical biodevices. Moreover different configurations involving the generation of fiber optical biosensors are described. To overcome some limitations of fiber optical biosensors, plasmonic phenomena proposed. In addition novel plasmonic phenomena have broaden researcher’s horizons in new discovering in terms of technology and application. As regards there are many challenges to detect ultra-low concentration samples with high sensitivity in real time. Researchers have always made great efforts to discover more effective methods. Throughout the paper SPR and LSPR as a powerful analysis instrument are introduced. Finally surveys the current practical performances of plasmonic sensors in detection of bio target are provided. As a result these devices demonstrate great potential in identifying target analytic due to their unique optical biosensors.

One-pot synthesis of dendritic Pt3Ni nanoalloys as nonenzymatic electrochemical biosensors with high sensitivity and selectivity for dopamine detection

Nanoscale ◽  
2017 ◽  
Vol 9 (31) ◽  
pp. 10998-11003 ◽  
Author(s):  
Ge Gao ◽  
Zongkui Zhang ◽  
Kai Wang ◽  
Qiang Yuan ◽  
Xun Wang
Keyword(s):  
High Sensitivity ◽  
Electrochemical Biosensors ◽  
Facile Synthesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
Dopamine Detection ◽  
Sensitivity And Selectivity

We report a facile synthesis of dendritic Pt3Ni nanoalloys and their applications for dopamine biosensors. The LOD of dopamine on dendritic Pt3Ni nanoalloy microelectrodes can decrease down to 0.01 μM.

scholarly journals Recent Advances in Sensing Applications of Molecularly Imprinted Photonic Crystals

2021 ◽  
Vol 9 ◽  
Author(s):  
Jing Fan ◽  
Lili Qiu ◽  
Yu Qiao ◽  
Min Xue ◽  
Xiao Dong ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
High Sensitivity ◽  
Molecularly Imprinted ◽  
Naked Eye ◽  
Sensing Applications ◽  
Recent Advances ◽  
Molecular Imprinting Technology ◽  
Sensitivity And Selectivity ◽  
Target Molecules ◽  
Naked Eye Detection

Photonic crystals (PhCs) with a brightly colored structure are novel materials and are widely used in chemical and biological sensing. Combining PhCs with molecular imprinting technology (MIT), the molecularly imprinted PhC (MIPC) sensors are fabricated, which can specifically recognize the target molecules. Aside from high sensitivity and selectivity, the MIPC sensors could recognize the naked eye detection because of its optical properties. In this review, an overview of recent advances in sensing applications of MIPC sensors including the responsive mechanisms, application in environmental monitoring, and the application to human health were illustrated. The MIPC sensors all responded to the analytes specifically and also showed high sensitivity in real samples, which provided a method to realize the rapid, convenient, naked eye, and real-time detection. Furthermore, the current limitations and potential future directions of MIPC sensors were also discussed.

MOF-Derived Porous CeO2−x/C Nanorods and Their Applications in Uric Acid Biosensor

NANO ◽  
2018 ◽  
Vol 13 (07) ◽  
pp. 1850085 ◽  
Author(s):  
Jinbao Luo ◽  
Jiewu Cui ◽  
Yan Wang ◽  
Dongbo Yu ◽  
Yongqiang Qin ◽  
...  
Keyword(s):  
Uric Acid ◽  
Oxygen Vacancies ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Linear Range ◽  
Electrochemical Biosensors ◽  
Practical Applications ◽  
Sensitivity And Selectivity ◽  
Metal Organic ◽  
Uric Acid Biosensor

Selectivity is significant to the practical applications of electrochemical biosensors in clinical and diagnostic field. In this paper, porous CeO[Formula: see text]/C nanorods (NRs) derived from Ce-based metal organic framework (MOF) were synthesized and employed as substrate to construct uric acid biosensors with high sensitivity and selectivity at low working potential. The morphology, microstructures and elemental states of as-prepared samples were investigated by SEM, XRD, TEM and XPS systematically. It was found that a great amount of oxygen vacancies was introduced into the interstitial of CeO2 and nonstoichiometric CeO2/C (CeO[Formula: see text]/C) nanorods based on Ce-MOF were formed under calcination in Ar atmosphere. The increased oxygen vacancies enabled the negatively shifting of the working potential towards H2O2 detection for CeO[Formula: see text]/C nanorods, favoring the construction of biosensors based on the detection of H2O2. Uric biosensors based on CeO[Formula: see text]/C NRs exhibited a high sensitivity of 220.0[Formula: see text][Formula: see text]A[Formula: see text][Formula: see text][Formula: see text]cm[Formula: see text][Formula: see text][Formula: see text][Formula: see text]mM[Formula: see text] and a linear range from 50[Formula: see text][Formula: see text]M to 1000[Formula: see text][Formula: see text]M at working potential of [Formula: see text]0.4[Formula: see text]V versus SCE. It also exhibited superior selectivity toward interferents coexisting with uric acid in urine due to the low working potential.

scholarly journals Two-Dimensional Layered Nanomaterial-Based Electrochemical Biosensors for Detecting Microbial Toxins

Toxins ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 20 ◽  
Author(s):  
Zhuheng Li ◽  
Xiaotong Li ◽  
Minghong Jian ◽  
Girma Selale Geleta ◽  
Zhenxin Wang
Keyword(s):  
Homeland Security ◽  
Transition Metal Dichalcogenides ◽  
High Sensitivity ◽  
Cost Effective ◽  
Great Promise ◽  
Electrochemical Biosensors ◽  
Two Dimensional ◽  
Algal Toxins ◽  
2D Nanomaterials ◽  
Microbial Toxins

Toxin detection is an important issue in numerous fields, such as agriculture/food safety, environmental monitoring, and homeland security. During the past two decades, nanotechnology has been extensively used to develop various biosensors for achieving fast, sensitive, selective and on-site analysis of toxins. In particular, the two dimensional layered (2D) nanomaterials (such as graphene and transition metal dichalcogenides (TMDs)) and their nanocomposites have been employed as label and/or biosensing transducers to construct electrochemical biosensors for cost-effective detection of toxins with high sensitivity and specificity. This is because the 2D nanomaterials have good electrical conductivity and a large surface area with plenty of active groups for conjugating 2D nanomaterials with the antibodies and/or aptamers of the targeted toxins. Herein, we summarize recent developments in the application of 2D nanomaterial-based electrochemical biosensors for detecting toxins with a particular focus on microbial toxins including bacterial toxins, fungal toxins and algal toxins. The integration of 2D nanomaterials with some existing antibody/aptamer technologies into electrochemical biosensors has led to an unprecedented impact on improving the assaying performance of microbial toxins, and has shown great promise in public health and environmental protection.

scholarly journals Advances in Optical Biosensors and Sensors Using Nanoporous Anodic Alumina

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5068
Author(s):  
Mahmoud Amouzadeh Tabrizi ◽  
Josep Ferre-Borrull ◽  
Lluis F. Marsal
Keyword(s):  
Heavy Ions ◽  
Review Paper ◽  
High Sensitivity ◽  
Anodic Alumina ◽  
Optical Biosensors ◽  
Sensor Applications ◽  
Nanoporous Anodic Alumina ◽  
Sensitivity And Selectivity ◽  
Good Potential ◽  
Gas Molecules

This review paper focuses on recent progress in optical biosensors using self-ordered nanoporous anodic alumina. We present the fabrication of self-ordered nanoporous anodic alumina, surface functionalization, and optical sensor applications. We show that self-ordered nanoporous anodic alumina has good potential for use in the fabrication of antibody-based (immunosensor), aptamer-based (aptasensor), gene-based (genosensor), peptide-based, and enzyme-based optical biosensors. The fabricated optical biosensors presented high sensitivity and selectivity. In addition, we also showed that the performance of the biosensors and the self-ordered nanoporous anodic alumina can be used for assessing biomolecules, heavy ions, and gas molecules.

Schottky diodes based on 2D materials for environmental gas monitoring: a review on emerging trends, recent developments and future perspectives

2021 ◽  
Author(s):  
Minu Mathew ◽  
Chandra Sekhar Rout
Keyword(s):  
Gas Sensing ◽  
2D Materials ◽  
Schottky Diodes ◽  
High Sensitivity ◽  
Future Perspectives ◽  
Working Temperature ◽  
Emerging Trends ◽  
Gas Sensing Properties ◽  
Recent Developments ◽  
Sensitivity And Selectivity

This review details the fundamentals, working principles and recent developments of Schottky junctions based on 2D materials to emphasize their improved gas sensing properties including low working temperature, high sensitivity, and selectivity.

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