Nanorods and Nanocomposites最新文献

Copper Bimetals and Their Nanocomposites 铜双金属及其纳米复合材料

Nanorods and Nanocomposites Pub Date : 2020-03-11 DOI: 10.5772/intechopen.87930

H. Shokrvash, R. Rad, A. Massoudi, Reza Shokrvash

引用次数: 1

Polymer Nanocomposite-Based Electrochemical Sensors and Biosensors 基于聚合物纳米复合材料的电化学传感器和生物传感器

Nanorods and Nanocomposites Pub Date : 2020-03-11 DOI: 10.5772/intechopen.86826

B. John

引用次数: 12

Metallo-Dielectric Colloidal Films as SERS Substrate 金属-介电胶体膜作为SERS衬底

Nanorods and Nanocomposites Pub Date : 2019-12-30 DOI: 10.5772/intechopen.90313

A. L. González, Arturo Gomez, M. Toledo-Solano

{"title":"Metallo-Dielectric Colloidal Films as SERS Substrate","authors":"A. L. González, Arturo Gomez, M. Toledo-Solano","doi":"10.5772/intechopen.90313","DOIUrl":"https://doi.org/10.5772/intechopen.90313","url":null,"abstract":"Along this chapter, we probe that the discrete dipole approximation models fairly well the optical response of periodic systems. Herein, we use it to model the reflectance and transmittance, at normal incidence, of colloidal films made of SiO 2 spheres. As the thickness increases from 1 to 12 layers, the photonic band gap shifts to the blue tending to the value corresponding to a 3D opal, 442 nm. A film with more than eight layers resembles the bulk properties of a 3D opal. Our results are compared to a real sample. Besides, we show that taking advantage of the wide and asymmetrical absorbance spectrum of an opal with Au NPs is possible to identify the contribution of each component in the overall spectrum, through a deconvolution analysis. Finally, we present the electric field intensity as the content of metal NP increases in a monolayer. We consider NPs one order of magnitude smaller than the silica spheres, and then, 6, 9, and 17 NPs are hosted in the void. Similar average electric field intensities, about 11 times the incident intensity, are obtained with Au and Ag NPs. But, the spots with these intensities cover a bigger area with Ag NPs than with Au NPs. and transmittance, at normal incidence, of colloidal films made of SiO 2 spheres with a specific diameter of 200 nm. We show that as the thickness increases from 1 to 12 layers, the center of the photonic band gap shifts to the blue tending to the value of 444 nm. This value is very close to the one corresponding to a 3D opal with HCP structure, 442 nm. Analyzing the trend of the position of the BG, a film with more than eight layers resembles that of a 3D artificial opal. We also compared our results with a 3D artificial opal made with silica spheres of the same size as the one studied by us. We found a good qualitative agreement, and the differences are attributed mainly to the presence of defects in the sample.","PeriodicalId":280616,"journal":{"name":"Nanorods and Nanocomposites","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133083073","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

Study of Structural and Melting Properties of Gold Nanorods 金纳米棒的结构与熔化性能研究

Nanorods and Nanocomposites Pub Date : 2019-11-02 DOI: 10.5772/intechopen.84682

R. Essajai

引用次数: 0

Computational Analysis of Nanostructures for Li-Ion Batteries 锂离子电池纳米结构的计算分析

Nanorods and Nanocomposites Pub Date : 2019-10-17 DOI: 10.5772/intechopen.88712

Jameela Fatheema, S. Rizwan

{"title":"Computational Analysis of Nanostructures for Li-Ion Batteries","authors":"Jameela Fatheema, S. Rizwan","doi":"10.5772/intechopen.88712","DOIUrl":"https://doi.org/10.5772/intechopen.88712","url":null,"abstract":"Due to the energy crisis, the focus on the study of new materials has increased vastly. For the increasing demand of renewable energy, there are different ways suggested to attain that, which include the rechargeable batteries and the need to achieve them at smaller costs and for longtime use. Lithium ion batteries have gained a lot of attention for that specific reason. Along with the experiments, the easier way to understand and increase the efficiency of these materials for LIBs is to study them through simulations and theoretically. Density functional theory (DFT)-based study gives us an insight into the internal workings of the compounds used in lithium ion batteries (LIBs). In this chapter, an analysis of different structures is presented for use in LIBs, which mainly includes carbon nanostructures or nanotubes as well as 2D material graphene. The various ways in which the carbon-based structure is enhanced include doping into the structure, heterostructure of graphene with other 2D materials, and adsorption of atoms like Si onto the surface. The adsorption of Li on these various structures and the varying binding energies and capacity with the changing structure along with the understanding at atomic and nanoscale are mentioned.","PeriodicalId":280616,"journal":{"name":"Nanorods and Nanocomposites","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134090345","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

Mechanical and Tribological Properties of Epoxy Nano Composites for High Voltage Applications 高压环氧纳米复合材料的力学和摩擦学性能

Nanorods and Nanocomposites Pub Date : 2019-10-09 DOI: 10.5772/intechopen.88236

R. Aradhya, N. Renukappa

{"title":"Mechanical and Tribological Properties of Epoxy Nano Composites for High Voltage Applications","authors":"R. Aradhya, N. Renukappa","doi":"10.5772/intechopen.88236","DOIUrl":"https://doi.org/10.5772/intechopen.88236","url":null,"abstract":"The tribological and mechanical properties of organomodified montmorillonite (oMMT)-incorporated Epoxy (Epoxy-oMMT), vinyl ester (vinyl ester-oMMT) and titanium dioxide (TiO 2 )-filled Epoxy (Epoxy-TiO 2 ) nanocomposites are discussed below. Implications of introducing oMMT and TiO 2 nanoparticles on mechanical and dry sliding wear properties are presented using micrographs of cast samples and through observations of wear affected surface of nanocomposites. Distribution of nanoparticles and their influence on properties are being emphasized for under-standing the wear properties. The data on mechanical and tribological properties determined experimentally are compared with published literature. The main focus is to highlight the importance of nanofillers in the design of wear-resistant thermoset polymer composites. A detailed study of strength and moduli of Epoxy-oMMT, Epoxy-TiO 2 and vinyl ester-oMMT nanocomposites was taken up as a part of the investigation. A discussion on density, hardness, tensile, flexural test data, and friction and wear of nanocomposites and analysis of results by comparison with prevalent theoretical models and published results of experiments are presented.","PeriodicalId":280616,"journal":{"name":"Nanorods and Nanocomposites","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130192309","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: 0

Kinetic Features of Synthesis of Epoxy Nanocomposites 环氧纳米复合材料合成的动力学特征

Nanorods and Nanocomposites Pub Date : 2019-07-12 DOI: 10.5772/INTECHOPEN.85137

V. Irzhak

引用次数: 1

Graphene-Like Nanocomposites Graphene-Like纳米复合材料

Nanorods and Nanocomposites Pub Date : 2019-06-19 DOI: 10.5772/INTECHOPEN.85513

Z. Rafiei-Sarmazdeh, S. Ahmadi

引用次数: 0

Nanomaterials: An Overview of Nanorods Synthesis and Optimization 纳米材料:纳米棒的合成与优化综述

Nanorods and Nanocomposites Pub Date : 2019-05-13 DOI: 10.5772/INTECHOPEN.84550

Alsultan Abdul Kareem Ghassan, N. Mijan, Y. Taufiq-Yap

引用次数: 40

Nanostructure Technology for EO/IR Detector Applications 纳米结构技术在EO/IR探测器中的应用

Nanorods and Nanocomposites Pub Date : 2019-04-01 DOI: 10.5772/INTECHOPEN.85741

A. Sood, J. Zeller, G. Pethuraja, R. Welser, N. Dhar, P. Wijewarnasuriya

{"title":"Nanostructure Technology for EO/IR Detector Applications","authors":"A. Sood, J. Zeller, G. Pethuraja, R. Welser, N. Dhar, P. Wijewarnasuriya","doi":"10.5772/INTECHOPEN.85741","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.85741","url":null,"abstract":"This chapter covers recent advances in the development of nanostructure-based material technologies to benefit next-generation electro-optical (EO) and infrared (IR) sensor and imager applications. Nanostructured materials can now be integrated into a variety of technological platforms, offering novel optoelectrical properties that greatly enhance device performance in many practical applications. Use of novel carbon nanotube (CNT) based materials has enabled new approaches for applying nanostructure design methodologies that can offer enhanced performance for low-cost bolometers for IR detection and imaging applications. We will discuss the development of carbon nanostructure based infrared detectors and arrays, including concepts that will provide high performance, high frame rate, and uncooled microbolometers for mid-wave infrared (MWIR) and long-wave infrared (LWIR) band detection. In addition, nanostructured antireflection (AR) coatings are being developed that significantly enhance transmission over a broad spectrum, providing substantial improvements in device performance compared to conven-tional thin film AR coatings. These nanostructured AR coatings have been demonstrated over visible to LWIR spectral bands on various substrates. In this chapter, we discuss both theoretical and measured results of these diverse nanostructure technologies to advance sensing performance over a wide range of spectral bands for defense, space, and commercial applications.","PeriodicalId":280616,"journal":{"name":"Nanorods and Nanocomposites","volume":"63 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132463725","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: 14