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Nanocomposites for electronic applications that can be embedded for textiles and wearables

Science China(Technological Sciences) 2019年第6期62卷 895-902页

作者： SERRANO-GARCIA William JAYATHILAKA Wanasinghe Arachchige Dumith Madushanka CHINNAPPAN Amutha TRAN Thang Quyet BASKAR Chinnappan THOMAS Sylvia Wilson RAMAKRISHNA Seeram Department of Electrical engineering University of South Florida Tampa 33620 USA Department of Mechanical engineering National University of Singapore Singapore 119077 Singapore thdc institute of hydropower engineering and technology tehri Uttarakhand Technical University Dehradun 249001 India

In the present review, we have selected advances in electrospinning nanofibers that we envision to be embedded in textiles and wearables. These nanofibers have been proven to be excellent options for applications such as power generation, sensing, and communication. Their similitude with already known woven meshes makes these fibers perfect for electronically active textiles.These fibers offer well known characteristics such as mechanical flexibility, high surface area-to-volume ratio, light weight and can be tuned by carefully selecting the active materials in the precursor solution. Here we will discuss polymers with electroactive, piezoelectric, triboelectric and their composites that have been used in fiber structures by using the electrospinning technique.

关键词： nanofibers electrospinning electronic textiles electroactive materials

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Role of Chromium Intermediate Thin-Film on the Growth of Silicon Oxide (SiO<sub>x</sub>) Nanowires

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World Journal of Nano Science and engineering 2014年第1期4卷 1-6页

作者： Anima Johari Anoopshi Johari Vikas Rana M. C. Bhatnagar CARE Physics Department IIT Delhi New Delhi India thdc institute of hydropower engineering and technology Tehri India

In the present work, one-dimensional nanostructures of silicon oxide (SiOx) have been synthesized by thermal annealing method with and without chromium thin film on silicon substrate. The synthesis was carried out at different process temperatures ranging from 1000°C to 1100°C by using gold/chromium (Au/Cr) catalysts stack layer on the Si substrate in nitrogen (N2) ambience. The as-synthesized SiOx nanostructures have tetragonal rutile structure and show polycrystalline nature. The SEM images reveal wire-like nanostructures on the substrate with and without chromium thin film. Under the catalytic reaction of the gold/chromium metal, the density of SiOx nanowires is enhanced, since the Cr layer serves as a diffusion barrier for the diffusion of the gold downwards into the Si substrate. The vapor-liquid solid (VLS) growth mechanism is found to be dominant in the growth of SiOx nanowires. Furthermore, X-Ray diffraction microscopy (XRD) and Photoluminescence spectroscopy (PL) analysis conclude the defect free growth of the SiOx nanowires on gold/chrome/silicon substrate.

关键词： SiOx Nanowires Catalyst Assisted Growth Gold Chromium Thermal Annealing

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Identification of Sustainability Indicators and Evaluation of Transportation Corridors during Construction Using Fuzzy VIKOR Method

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Journal of Civil engineering and Architecture 2015年第10期9卷 1217-1228页

作者： Shishir Bansal Sameer Verma Santosh K. Singh Environmental engineering Department D TU (Delhi Technological University) Delhi 110092 India thdc (tehri Hydro Development Corporation) institute of Hydro Power engineering and technology Uttarakhand 249001 India

Sustainability is popularly defined as meeting the needs of the present generation without compromising the ability of future generations to meet their own needs. Social, economic and environmental parameters are most commonly accepted as the three pillars of sustainability. In this paper, various sustainability indicators have been identified during the construction stage for elevated transportation corridors and thereafter classified under various categories. Using fuzzy VIKOR technique, sustainability evaluation of transportation corridors is made on two selected project sites of two different government organizations using various identified sustainability indicators, i. e., a 3.2-km long elevated road project under construction from Vikaspuri to Meerabagh in West Delhi by PWD (Public Works Department) and the metro rail elevated corridor (part) from Punjabi Bagh to Mayapuri as a part of Phase 3, Line 7 by DMRC (Delhi Metro Rail Corporation). The study is made at both sites in the midst of the construction period and it is identified that during the construction stage, the sustainability of these transportation corridors is just not limited to three pillars, but in actuality, it is much beyond that. From the study, it is inferred that the metro rail elevated corridor is a more sustainable corridor, in the context of the identified sustainability indicators.

关键词：可持续性评价运输通道鉴定评价施工过程模糊可持续发展高架道路 R法

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