Multilayer Thin Films - Versatile Applications for Materials Engineering最新文献

Concepts for Designing Tailored Thin Film Surfaces with Potential Biological Applications 设计具有潜在生物学应用的定制薄膜表面的概念

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.89092

N. Muzzio, O. Azzaroni, S. Moya, M. Pasquale

引用次数: 3

Nano Layers of 2D Graphene Versus Graphene Oxides for Sensing Hydrogen Gas 纳米层二维石墨烯与氧化石墨烯传感氢气

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.88538

Anuradha Kashyap, S. Sinha, P. B. Barman, S. K. Hazra

{"title":"Nano Layers of 2D Graphene Versus Graphene Oxides for Sensing Hydrogen Gas","authors":"Anuradha Kashyap, S. Sinha, P. B. Barman, S. K. Hazra","doi":"10.5772/intechopen.88538","DOIUrl":"https://doi.org/10.5772/intechopen.88538","url":null,"abstract":"Hydrogen is one of the most useful but dangerous gases because of its broad combustion range and small ignition temperature. Currently, there is a great need for hydrogen detectors with selectivity, high sensitivity and reliable operations in view of its safe production, storage, transportation and other applications. In this regard, nano thin films of two dimensional materials like graphene, graphene oxide (GO) and reduced graphene oxide (rGO) have immense promise because their material attributes can be exceptionally tuned to achieve the desired characteristics. Also graphene oxide and reduced graphene oxide serve as potential sensing hosts due to the presence of functional groups on their surfaces. In this chapter, an attempt has been made to compare the work done in the field of hydrogen sensors using pure graphene and graphene derivatives such as graphene oxide and reduced graphene oxide. The response parameters like sensitivity, stability, selectivity, response time, recovery time, detection limit, linearity, dynamic range, and working temperatures for various graphene based sensors have been elaborately compared. Finally, a conclusion and future outlook on nano scale thin film of graphene and graphene oxides for gas sensing have been briefly discussed.","PeriodicalId":391660,"journal":{"name":"Multilayer Thin Films - Versatile Applications for Materials Engineering","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123308312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Environmental Gas Sensors Based on Nanostructured Thin Films 基于纳米结构薄膜的环境气体传感器

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.89745

N. Sureshkumar, A. Dutta

{"title":"Environmental Gas Sensors Based on Nanostructured Thin Films","authors":"N. Sureshkumar, A. Dutta","doi":"10.5772/intechopen.89745","DOIUrl":"https://doi.org/10.5772/intechopen.89745","url":null,"abstract":"Since the discovery of electron microscopes, nanomaterials and nanotechnology have been influencing academic and industrial research greatly for bringing out newer and better products with improved materials’ properties. In the field of environmental gas sensors too, the demonstration of nanomaterials for sensing various gases has become a common practice. Environmental gas pollution has turned out to be a huge concern in the society due to the progress of civilization. The awareness of health hazard for different toxic/polluting gases and rectification measure by imposing stricter norms has prompted extensive research to develop efficient gas sensors to detect trace level of pollution from various sources. Thin film, ultrathin film, and nanostructure materials of metal oxide semiconductor, polymer, metal, carbon nanotube, graphene, etc. with or without sensitizers have been investigated for sensing various toxic gases. New device structures have been fabricated to achieve high sensitivity, selectivity, fast response, etc. The microstructure and thickness of film are found to influence the performance greatly. Various methods of preparations and mechanism of sensing are being explored. All these aspects and the challenges were discussed in this chapter.","PeriodicalId":391660,"journal":{"name":"Multilayer Thin Films - Versatile Applications for Materials Engineering","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123213444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Multilayered Nanostructures Integrated with Emerging Technologies 与新兴技术相结合的多层纳米结构

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.89329

M. Braunger, R. C. Hensel, Gabriel Gaál, Mawin J M Jimenez, V. Rodrigues, A. Riul

{"title":"Multilayered Nanostructures Integrated with Emerging Technologies","authors":"M. Braunger, R. C. Hensel, Gabriel Gaál, Mawin J M Jimenez, V. Rodrigues, A. Riul","doi":"10.5772/intechopen.89329","DOIUrl":"https://doi.org/10.5772/intechopen.89329","url":null,"abstract":"Surface and interface functionalization are crucial steps to introduce new functionalities in numerous applications, as faster dynamics occur on surfaces rather than bulk. Within this context, the layer-by-layer (LbL) technique is a versatile methodology to controllably form organized nanostructures from the spontaneous adsorption of charged molecules. It enables the assembly of multilayered LbL films on virtually any surface using non-covalent molecular interactions, allowing the nanoengineering of interfaces and creation of multifunctional systems with distinct building blocks (polymers, clays, metal nanoparticles, enzymes, organic macro-molecules, etc.). Several applications require thin films on electrodes for sensing/ biosensing, and here we explore LbL films deposited on interdigitated electrodes (IDEs) that were 3D-printed using the fusing deposition modeling (FDM) technique. IDEs covered with LbL films can be used to form multisensory systems employed in the analysis of complex liquids transforming raw data into specific patterns easily recognized by computational and statistical methods. We extend the FDM 3D-printing methodology to simplify the manufacturing of electrodes and microchannels, thus integrating an e-tongue system in a microfluidic device. Moreover, the continuous flow within microchannels contributes to faster and more accurate analysis, reducing the amount of sample, waste, and costs.","PeriodicalId":391660,"journal":{"name":"Multilayer Thin Films - Versatile Applications for Materials Engineering","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133978925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Synthesis and Characterization of CoO-ZnO-Based Nanocomposites for Gas-Sensing Applications 气敏用coo - zno基纳米复合材料的合成与表征

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.88760

Parthasarathy Panchatcharam

{"title":"Synthesis and Characterization of CoO-ZnO-Based Nanocomposites for Gas-Sensing Applications","authors":"Parthasarathy Panchatcharam","doi":"10.5772/intechopen.88760","DOIUrl":"https://doi.org/10.5772/intechopen.88760","url":null,"abstract":"CoO-ZnO composite nanofibers were synthesized through electrospinning technique. CoO-ZnO composite nanofibers were fabricated by doping zinc (zinc acetate dihydrate) and varied concentrations of cobalt (cobalt oxide) in the ratio of 1, 3, and 5 wt%, respectively. By modifying the solvent and the electrospinning parameters, different tests were carried out to optimize the morphological properties of the synthesized composite nanofibers. The morphological characterization was performed by scanning electron microscopy (SEM) with a field emission gun. The atomic composition of the nanofibers was analyzed by energy-dispersive X-ray (EDX) spectroscopy using a solid-state detector. Gas-sensing performances are done at different temperatures like at room temp, 50°C, and 100°C to find out the optimum operating temperature for detecting acetone gas. The sensitivity studies of CoO-ZnO composite nanofiber were carried out over different concentrations of acetone gas from 50 to 250 ppm. The sensitivity of this sensor developed is found to be increasing with increase in temperature and also increases if dopant concentration increases when compared with pure nanofibers. The sensitivity analysis proved a fact that uncalcinated CoO-ZnO composite nanofibers can be helpful in the detection of diabetics at the early stage with acetone concentration in the breaths.","PeriodicalId":391660,"journal":{"name":"Multilayer Thin Films - Versatile Applications for Materials Engineering","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115556246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Review on Metal Oxide-Graphene Derivative Nano-Composite Thin Film Gas Sensors 金属氧化物-石墨烯衍生物纳米复合薄膜气体传感器研究进展

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.90622

A. Hazra, Nagesh Samane, S. Basu

{"title":"A Review on Metal Oxide-Graphene Derivative Nano-Composite Thin Film Gas Sensors","authors":"A. Hazra, Nagesh Samane, S. Basu","doi":"10.5772/intechopen.90622","DOIUrl":"https://doi.org/10.5772/intechopen.90622","url":null,"abstract":"Most of the available commercial solid-state gas/vapor sensors are based on metal oxide semiconductors. Metal oxides (MOs) change their conductivity while exposed to gas or vapors ambient can be utilized as gas or vapor sensing materials. In recent days, graphene has attracted tremendous attention owing to its two-dimensional structure with an extremely high surface to volume ratio, electron mobility, and thermal conductivity. However, intrinsic graphene is relatively inef-ficient for the adsorption of gas/vapor molecules. In this regard, graphene oxide (GO) and reduced graphene oxide (rGO), which are graphene species functionalized with different oxygen groups that offer a higher amount of adsorption sites improving the sensitivity of the film. Up to now, many research groups across the globe have reported the promising performance towards gas detection using various GO/rGO-metal oxide nanocomposites. This chapter reviews the composites of graphene oxide or reduced graphene oxide and metal oxides in nanoscale dimensions (0-D, 1-D, 2-D, and 3-D) for gas sensing applications considering two specific focus areas, that is, synthesis of nanocomposites and performance assessment for gas/vapor sensing.","PeriodicalId":391660,"journal":{"name":"Multilayer Thin Films - Versatile Applications for Materials Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130136637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Multilayered and Chemiresistive Thin and Thick Film Gas Sensors for Air Quality Monitoring 用于空气质量监测的多层和化学电阻薄膜和厚膜气体传感器

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.89710

T. Bhowmick, V. Ambardekar, A. Ghosh, M. Dewan, Partha Pratim Bandyopadhyay, S. Nag, Subhasish Basu Majumder

{"title":"Multilayered and Chemiresistive Thin and Thick Film Gas Sensors for Air Quality Monitoring","authors":"T. Bhowmick, V. Ambardekar, A. Ghosh, M. Dewan, Partha Pratim Bandyopadhyay, S. Nag, Subhasish Basu Majumder","doi":"10.5772/intechopen.89710","DOIUrl":"https://doi.org/10.5772/intechopen.89710","url":null,"abstract":"Selective detection of gases such as nitrogen dioxide (NO 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), and various volatile organic components (VOCs) is necessary for air quality monitoring. Detection of hydrogen (H 2 ) is equally important as it is a flammable gas and poses serious threat of explosion when exposed to oxygen gas. We have studied the sensing characteristics of these gases using thin film deposited by chemical solution deposition as well as relatively thicker films deposited by atmospheric plasma spray (APS) process. The chapter starts with the sensing mechanism of chemiresistive sensors followed by the definition of gas sensing parameters. Subsequently, we have demonstrated selective NO 2 sensing characteristics of zinc oxide-graphene (ZnO-G) multilayered thin film followed by CO and H 2 sensing characteristics of ZnO thin film and SnO 2 thick film. Cross-sensitivity among CO and H 2 gases has been addressed through the analysis of conductance transients with the determination of activation energy, E a , and heat of adsorption, Q. The concepts of reversible and irreversible sensing have also been discussed in relation to CO and H 2 gases. CO 2 sensing characteristics of LaFe 0.8 Co 0.2 O 3 (LFCO)-ZnO thin film have been elucidated. Interference from CO has been addressed with principal component analyses and the ascertaining of E a and Q values. Additionally, the variation of response with temperature for each gas was simulated to determine distinct parameters for the individual gases. Further, VOC sensing characteristics of copper oxide (CuO) thin film and WO 3 -SnO 2 thick film were investigated. Principal component analysis was performed to discriminate the gases in CuO thin film. The interaction of WO 3 -SnO 2 thick film with various VOCs was found to obey the Freundlich adsorption isotherm based on which E a and Q values were determined.","PeriodicalId":391660,"journal":{"name":"Multilayer Thin Films - Versatile Applications for Materials Engineering","volume":"211 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115583817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Metal Organic Frameworks-Based Optical Thin Films 基于金属有机框架的光学薄膜

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.86290

Cheng-an Tao, Jianfang Wang, Rui-Bin Chen

引用次数: 2

Nanostructured Silicon Sensors 纳米结构硅传感器

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.88316

H. Mamedov

引用次数: 0

Multilayer Thin Films on Fine Particles 细颗粒上的多层薄膜

Multilayer Thin Films - Versatile Applications for Materials Engineering Pub Date : 2020-01-15 DOI: 10.5772/intechopen.89972

S. Habibzadeh, E. Rahmani, M. Saeb, M. Ganjali, J. Chaouki

引用次数: 3