Toxic Gas Sensors and Biosensors

2021 ◽  
Keyword(s):  
Thin Films ◽  
Metal Oxides ◽  
Gas Sensors ◽  
Transition Metal Dichalcogenides ◽  
Glucose Sensing ◽  
Healthcare Applications ◽  
Glucose Biosensors ◽  
Metal Dichalcogenides ◽  
Toxic Gas ◽  
No2 Detection

The book focuses on novel sensor materials and their environmental and healthcare applications, such as NO2 detection, toxic gas and biosensing, hydrazine determination, glucose sensing and the detection of toxins and pollutants on surfaces. Materials covered include catalytic nanomaterials, metal oxides, perovskites, zeolites, spinels, graphene-based gas sensors, CNT/Ni nanocomposites, glucose biosensors, single and multi-layered stacked MXenes, black phosphorus, transition metal dichalcogenides and P3OT thin films.

scholarly journals Nanoengineering Approaches Toward Artificial Nose

2021 ◽  
Vol 9 ◽  
Author(s):  
Sanggon Kim ◽  
Jacob Brady ◽  
Faraj Al-Badani ◽  
Sooyoun Yu ◽  
Joseph Hart ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
High Surface ◽  
High Surface Area ◽  
Transition Metal Dichalcogenides ◽  
Sensor Arrays ◽  
Artificial Nose ◽  
Electrical Sensing ◽  
Sensitivity And Selectivity ◽  
Metal Dichalcogenides

Significant scientific efforts have been made to mimic and potentially supersede the mammalian nose using artificial noses based on arrays of individual cross-sensitive gas sensors over the past couple decades. To this end, thousands of research articles have been published regarding the design of gas sensor arrays to function as artificial noses. Nanoengineered materials possessing high surface area for enhanced reaction kinetics and uniquely tunable optical, electronic, and optoelectronic properties have been extensively used as gas sensing materials in single gas sensors and sensor arrays. Therefore, nanoengineered materials address some of the shortcomings in sensitivity and selectivity inherent in microscale and macroscale materials for chemical sensors. In this article, the fundamental gas sensing mechanisms are briefly reviewed for each material class and sensing modality (electrical, optical, optoelectronic), followed by a survey and review of the various strategies for engineering or functionalizing these nanomaterials to improve their gas sensing selectivity, sensitivity and other measures of gas sensing performance. Specifically, one major focus of this review is on nanoscale materials and nanoengineering approaches for semiconducting metal oxides, transition metal dichalcogenides, carbonaceous nanomaterials, conducting polymers, and others as used in single gas sensors or sensor arrays for electrical sensing modality. Additionally, this review discusses the various nano-enabled techniques and materials of optical gas detection modality, including photonic crystals, surface plasmonic sensing, and nanoscale waveguides. Strategies for improving or tuning the sensitivity and selectivity of materials toward different gases are given priority due to the importance of having cross-sensitivity and selectivity toward various analytes in designing an effective artificial nose. Furthermore, optoelectrical sensing, which has to date not served as a common sensing modality, is also reviewed to highlight potential research directions. We close with some perspective on the future development of artificial noses which utilize optical and electrical sensing modalities, with additional focus on the less researched optoelectronic sensing modality.

Large-area synthesis of transition metal dichalcogenides via CVD and solution-based approaches and their device applications

Nanoscale ◽  
2021 ◽  
Author(s):  
Anh Tuan Hoang ◽  
Kairui Qu ◽  
Xiang Chen ◽  
Jong-Hyun Ahn
Keyword(s):  
Thin Films ◽  
Chemical Vapor Deposition ◽  
Transition Metal ◽  
Vapor Deposition ◽  
Transition Metal Dichalcogenides ◽  
Chemical Vapor ◽  
Large Area ◽  
Wafer Scale ◽  
Metal Dichalcogenides ◽  
Device Applications

This article reviews the latest advances in the synthesis of wafer-scale thin films using chemical vapor deposition and solution-based methods and various device applications.

scholarly journals TEM investigation of MoSeC films

2008 ◽  
Vol 14 (S3) ◽  
pp. 7-10 ◽  
Author(s):  
C. Silviu Sandu ◽  
Tomas Polcar ◽  
Albano Cavaleiro
Keyword(s):  
Thin Films ◽  
Transition Metal ◽  
Magnetron Sputtering ◽  
Transition Metal Dichalcogenides ◽  
Deposition Method ◽  
Practical Applications ◽  
Mechanical And Tribological Properties ◽  
Lubricating Material ◽  
Metal Dichalcogenides ◽  
Contact Pressures

Transition metal dichalcogenides (TMD) are widely used as self-lubricating material either as oil additive or directly as thin films. Magnetron sputtering is a deposition method allowing depositing such films with high density and adhesion. However, their spread use in practical applications is still hindered since their excellent sliding properties are deteriorated in the presence of humidity and under high contact pressures. MoSe2, one of the members of TMD family recently studied, has been co-sputtered with carbon in order to improve the mechanical and tribological properties when compared to pure MoSe2 films.

Transition metal dichalcogenides-based flexible gas sensors

2020 ◽  
Vol 303 ◽  
pp. 111875 ◽  
Author(s):  
Rahul Kumar ◽  
Neeraj Goel ◽  
Mirabbos Hojamberdiev ◽  
Mahesh Kumar
Keyword(s):  
Transition Metal ◽  
Gas Sensors ◽  
Transition Metal Dichalcogenides ◽  
Metal Dichalcogenides

Polyaniline thin films as a toxic gas sensors in SAW system*

2005 ◽  
Vol 129 ◽  
pp. 121-124 ◽  
Author(s):  
W. P. Jakubik ◽  
M. Urbanczyk ◽  
E. Maciak ◽  
T. Pustelny ◽  
A. Stolarczyk
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Toxic Gas

Sensing and electrocatalytic activity of tungsten disulphide thin films fabricated via metalorganic chemical vapour deposition

2021 ◽  
Author(s):  
Jan-Lucas Wree ◽  
Jean-Pierre Glauber ◽  
Denis Oehl ◽  
Alessia Niessen ◽  
Aleksander Kostka ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrocatalytic Activity ◽  
Vapour Deposition ◽  
Transition Metal Dichalcogenides ◽  
Chemical Vapour ◽  
Tungsten Disulphide ◽  
Structural And Electronic Properties ◽  
Metal Dichalcogenides ◽  
Metalorganic Chemical Vapour Deposition ◽  
Metalorganic Chemical

The unique structural and electronic properties of transition metal dichalcogenides (TMDs) and in particular tungsten disulphide (WS2) makes it interesting for a variety of applications such as electrocatalytic hydrogen evolution...

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