Biomimetic multifunctional E-skins integrated with mechanoluminescence and chemical sensing abilities

2021 ◽  
Author(s):  
Xin Yang ◽  
Xu Zhang ◽  
Qingbao Guan ◽  
Xinxing Zhang
Keyword(s):  
Chemical Sensing ◽  
Strain Sensing ◽  
Metal Doped

We present a facile method to prepare multifunctional sensors with visual strain sensing and ammonia monitoring abilities based on PANI@CNCs and metal-doped ZnS microparticle-embedded PDMS composites.

scholarly journals Swelling-Based Chemical Sensing With Unmodified Optical Fibers

2021 ◽  
Author(s):  
Alin Jderu ◽  
Dorel Dorobantu ◽  
Dominik Ziegler ◽  
Marius Enachescu
Keyword(s):  
Water Quality ◽  
Optical Fibers ◽  
Food Processing ◽  
Chemical Sensing ◽  
Low Cost ◽  
Water Quality Monitoring ◽  
Medical Diagnostics ◽  
Distributed Sensing ◽  
Quality Monitoring ◽  
Strain Sensing

AbstractWe use distributed fiber optic strain sensing to examine swelling of the fiber’s polymer coating. The distributed sensing technique that uses unmodified low-cost telecom fibers opens a new dimension of applications that include leak detection, monitoring of water quality, and waste systems. On a short-range length scale, the technology enables “lab-on-a-fiber” applications for food processing, medicine, and biosensing for instance. The chemical sensing is realized with unmodified low-cost telecom optical fibers, namely, by using swelling in the coating material of the fiber to detect specific chemicals. Although generic and able to work in various areas such as environmental monitoring, food analysis, agriculture or security, the proposed chemical sensors can be targeted for water quality monitoring, or medical diagnostics where they present the most groundbreaking nature. Moreover, the technique is without restrictions applicable to longer range installations.

scholarly journals Nanoparticles Synthesised in the Gas-Phase and Their Applications in Sensors: A Review

Applied Nano ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 70-86
Author(s):  
Evangelos Skotadis ◽  
Evangelos Aslanidis ◽  
Maria Kainourgiaki ◽  
Dimitris Tsoukalas
Keyword(s):  
Gas Phase ◽  
Metallic Nanoparticles ◽  
Chemical Sensing ◽  
Strain Sensing ◽  
Phase Synthesis ◽  
Comprehensive Review ◽  
Gas Phase Synthesis ◽  
Sensing Applications ◽  
Sensing Technology ◽  
The Subject

This article aims to provide a comprehensive review of recent advances in the use of gas-phase synthesized nanoparticles in the field of sensing technology. Since there are numerous and diverse reviews that already cover the subject extensively, this review focuses predominantly but not exclusively on gas-phase synthesized metallic nanoparticles and their most prominent sensing-applications. After a brief overview on the main uses of nanoparticles in science and technology, as well as a description of the dominant fabrication methods, the review discusses their incorporation in strain-sensing, chemical sensing and bio-sensing as well as a few other sensing-applications. The review highlights the inherent advantages of nanoparticles, as well as how they combine with flexible gas-phase synthesis processes.

Characterization of Metal-Doped Methylated Microporous Silica for Molecular Separations

2016 ◽  
Vol 2 (2) ◽  
pp. 85-100
Author(s):  
Tània Gumí ◽  
Hany El-Feky ◽  
Kelly Briceño ◽  
Kamila Szałata ◽  
Miguel Hevia
Keyword(s):  
Microporous Silica ◽  
Molecular Separations ◽  
Metal Doped

Review of Microfluidic Devices for On-Chip Chemical Sensing

2016 ◽  
Vol 136 (6) ◽  
pp. 244-249
Author(s):  
Takahiro Watanabe ◽  
Fumihiro Sassa ◽  
Yoshitaka Yoshizumi ◽  
Hiroaki Suzuki
Keyword(s):  
Chemical Sensing ◽  
Microfluidic Devices ◽  
On Chip

Processing of Iridium Doped Materials and Experimental Investigation of Their Hydrogen Adsorption Capacity

2018 ◽  
Vol 69 (6) ◽  
pp. 1468-1472
Author(s):  
Radu Mirea ◽  
Mihai Iordoc ◽  
Gabriela Oprina ◽  
Gimi Rimbu
Keyword(s):  
Adsorption Capacity ◽  
Hydrogen Adsorption ◽  
Weight Ratio ◽  
H2 Adsorption ◽  
Cyclic Voltametry ◽  
Physical Chemical ◽  
Good Consistency ◽  
Metal Doped ◽  
And Storage ◽  
Poly Aniline

The paper aims to present the investigation of H2 adsorption capacity in metal doped nanostructured materials, by using two methods. Carbonic materials are considered to be one of the most promising materials to be used for hydrogen adsorption and storage. They have different applications and one of the most important is considered to be fuel cells technology. By using metals for doping these materials, the adsorption capacity increases, thus approaching the target of 6.5% weight ratio of H2 adsorbed in a substrate. Within these investigations multi-wall nanotubes and poly-aniline have been used as substrates. The poly-aniline has been prepared and doped in laboratory while the nanotubes used in experiments have been purchased from the market and afterwards doped in laboratory. The doping procedure consists of a physical-chemical method which involves salts of the metal for doping and the use of ultrasounds in order to activate the substrate for doping. The adsorption capacity of the carbonic materials has been determined by using spill over phenomena in a PCT Pro-User apparatus, provided by SETARAM and also by cyclic voltametry, by using VoltaLab-40 apparatus. In order to investigate the adsorption capacity of the nanostructured carbonic materials, the experiments have been carried out at different pressures. Both substrates have been characterized in order to determine their porosity, BET surface and structure. The collected data have been processed by using the PCT Pro-User apparatus�s software. The results have been compared with the available data from literature and a good consistency was found.

Metal Doped-C3N4/Fe2O4: Efficient and Versatile Heterogenous Catalysts for Organic Transformations

2019 ◽  
Vol 23 (12) ◽  
pp. 1284-1306
Author(s):  
Vijai K. Rai ◽  
Fooleswar Verma ◽  
Suhasini Mahata ◽  
Smita R. Bhardiya ◽  
Manorama Singh ◽  
...  
Keyword(s):  
Ring Opening ◽  
Carbon Nitride ◽  
Addition Reaction ◽  
High Surface ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride ◽  
Organic Transformations ◽  
Reduction Reactions ◽  
Activation Reaction ◽  
Metal Doped

The polymeric graphitic carbon nitride (g-C3N4) has been one of the interesting earth abundant elements. Though g-C3N4 finds application as a photocatalyst, its photocatalytic behaviour is limited because of low efficiency, mainly due to rapid charge recombination. To overcome this problem, several strategies have been developed including doping of metal/non-metal in the cavity of g-C3N4. Moreover, the CoFe2O4 NPs have been used in many organic transformations because of its high surface area and easy separation due to its magnetic nature. This review describes the role of cobalt ferrite as magnetic nanoparticles and metal-doped carbon nitride as efficient heterogeneous catalysts for new carbon-carbon and carbon-hetero atom bond formation followed by heterocyclization. Reactions which involved new catalysts for selective activation of readily available substrates has been reported herein. Since nanoparticles enhance the reactivity of catalyst due to higher catalytic area, they have been employed in various reactions such as addition reaction, C-H activation reaction, coupling reaction, cyclo-addition reaction, multi-component reaction, ring-opening reaction, oxidation reaction and reduction reactions etc. The driving force for choosing this topic is based-on huge number of good publications including different types of spinels/metal doped-/graphitic carbon nitride reported in the literature and due to interest of synthetic community in recent years. This review certainly will represent the present status in organic transformation and for exploring further their catalytic efficiency to new organic transformations involving C-H activation reaction through coupling, cyclo-addition, multi-component, ring-opening, oxidation and reduction reactions.

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