scholarly journals New EMC Effects with Multi-layered Type of EM Shield

2021 ◽  
Vol 1 (2) ◽  
pp. 14-17
Author(s):  
Aron Tesfalem Berhe ◽  
Frank Graebner
Keyword(s):  
Electromagnetic Interference ◽  
Negative Impact ◽  
Electronic Devices ◽  
Design Analysis ◽  
Electromagnetic Shield ◽  
Electro Magnetic ◽  
Shield Design

Electro-magnetic interference is one of the biggest problems which hinder electrical and/or electronic devices from operating efficiently in addition to the negative impact it can have on environment. However, with proper shielding, unwanted electromagnetic interference can be substantially reduced, hence to achieve better EM compatibility among devices and avail safer environment. This paper presents multi-layered electromagnetic shield design analysis by considering different scenarios. The analysis is based on simulation done using MATLAB

Polymeric textile-based electromagnetic interference shielding materials, their synthesis, mechanism and applications – A review

2021 ◽  
pp. 152808372110370
Author(s):  
Faiza Safdar ◽  
Munir Ashraf ◽  
Amjed Javid ◽  
Kashif Iqbal
Keyword(s):  
Electromagnetic Interference ◽  
Hybrid Composites ◽  
Electronic Devices ◽  
High Tech ◽  
Emi Shielding ◽  
Materials Synthesis ◽  
Synthesis Mechanism ◽  
High Frequencies ◽  
Textile Materials ◽  
Shielding Composites

The rapid proliferation of electronic devices and their operation at high frequencies has raised the contamination of artificial electromagnetic radiations in the atmosphere to an unprecedented level that is responsible for catastrophe for ecology and electronic devices. Therefore, the lightweight and flexible electromagnetic interference (EMI) shielding materials are of vital importance for controlling the pollution generated by such high-frequency EM radiations for protecting ecology and human health as well as the other nearby devices. In this regard, polymeric textile-based shielding composites have been proved to be the best due to their unique properties such as lightweight, excellent flexibility, low density, ease of processability and ease of handling. Moreover, such composites cover range of applications from everyday use to high-tech applications. Various polymeric textiles such as fibers, yarn, woven, nonwoven, knitted, as well as their hybrid composites have been extensively manipulated physically and/or chemically to act as shielding against such harmful radiations. This review encompasses from basic concept of EMI shielding for beginner to the latest research in polymeric-based textile materials synthesis for experts, covering detailed mechanisms with schematic illustration. The review also covers the gap of materials synthesis and their application on polymeric textiles which could be used for EMI shielding applications. Furthermore, recent research regarding rendering EMI shielding properties at various stages of polymeric textile development is provided for readers with critical analysis. Lastly, the applications along with environmental compliance have also been presented for better understanding.

scholarly journals Ultrathin, Lightweight, and Flexible CNT Buckypaper Enhanced Using MXenes for Electromagnetic Interference Shielding

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Rongliang Yang ◽  
Xuchun Gui ◽  
Li Yao ◽  
Qingmei Hu ◽  
Leilei Yang ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
High Performance ◽  
Electronic Devices ◽  
Deposition Process ◽  
Shielding Effectiveness ◽  
Emi Shielding ◽  
Emi Shielding Effectiveness ◽  
X Band ◽  
Wearable Electronic Devices ◽  
Emi Se

AbstractLightweight, flexibility, and low thickness are urgent requirements for next-generation high-performance electromagnetic interference (EMI) shielding materials for catering to the demand for smart and wearable electronic devices. Although several efforts have focused on constructing porous and flexible conductive films or aerogels, few studies have achieved a balance in terms of density, thickness, flexibility, and EMI shielding effectiveness (SE). Herein, an ultrathin, lightweight, and flexible carbon nanotube (CNT) buckypaper enhanced using MXenes (Ti3C2Tx) for high-performance EMI shielding is synthesized through a facile electrophoretic deposition process. The obtained Ti3C2Tx@CNT hybrid buckypaper exhibits an outstanding EMI SE of 60.5 dB in the X-band at 100 μm. The hybrid buckypaper with an MXene content of 49.4 wt% exhibits an EMI SE of 50.4 dB in the X-band with a thickness of only 15 μm, which is 105% higher than that of pristine CNT buckypaper. Furthermore, an average specific SE value of 5.7 × 104 dB cm2 g−1 is exhibited in the 5-μm hybrid buckypaper. Thus, this assembly process proves promising for the construction of ultrathin, flexible, and high-performance EMI shielding films for application in electronic devices and wireless communications.

scholarly journals Electromagnetic Interference assessment of small electronic devices with a TEM cell

2021 ◽  
Vol 1826 (1) ◽  
pp. 012093
Author(s):  
J H Angelo ◽  
M S Dias ◽  
M L Pereira Filho ◽  
A F G F Junior ◽  
J M Janiszewski
Keyword(s):  
Electromagnetic Interference ◽  
Electronic Devices ◽  
Tem Cell

scholarly journals Design, Analysis and Testing of Multi-axis Vibration Fixture for Electronic Devices

2016 ◽  
Vol 9 (34) ◽  
Author(s):  
, Venkat ◽  
, Varun ◽  
Arun Kumar Singh ◽  
, Srikrishna ◽  
Sharan Mudda ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Design Analysis

scholarly journals The Effects of Preschoolers’ Media Usage Habits on Their Daily Life and Sustainability

2019 ◽  
Vol 10 (2) ◽  
pp. 112-128
Author(s):  
Begum Canaslan Akyar ◽  
Özkan Sapsaglam
Keyword(s):  
Home Environment ◽  
Negative Impact ◽  
Electronic Devices ◽  
Media Usage ◽  
Case Study Design ◽  
Digital World ◽  
Digital Contents ◽  
Reported Study ◽  
Different Levels

Abstract Today’s children are born into a digital world and are exposed to various electronic devices and digital contents both in the home environment and other environments since the first years of life. Children, who are a natural recipient of the environment in which they live, are exposed to the effects of the digital world at different levels and reflect these effects in different ways. The purpose of the reported study is to investigate if preschoolers’ daily media usage habits affects their drawings. This study is planned according to the case study design of qualitative research methods. The study was conducted with 15 preschoolers and their parents. There were nine boys and six girls in the study. The preschoolers’ drawings and their parents’ interview data were analyzed by using the descriptive analyzing method. The study result shows that there are differences between boys and girls media usage habits. Boys spend more time with media tools than girls. Additionally, boys are exposed to more inappropriate content because of their preferences. The analysis of their drawings revealed that boys are more affected than girls from media contents since boys’ drawings include more characters from media than girls. It can thus be suggested that media tools might be harmful when they are used in a developmentally inappropriate way, and excessive media tool usage has negative impact on children. Therefore, the reported study recommends that parents and caregivers take some precautions to limit preschoolers from spending time with media tools and to control content of children’s activity.

Conductive polymer-based electro-conductive textile composites for electromagnetic interference shielding: A review

2016 ◽  
Vol 47 (8) ◽  
pp. 2228-2252 ◽  
Author(s):  
Subhankar Maity ◽  
Arobindo Chatterjee
Keyword(s):  
Electromagnetic Interference ◽  
Conductive Polymers ◽  
Conductive Polymer ◽  
Polymer Processing ◽  
Textile Composites ◽  
Electromagnetic Shielding ◽  
Electromagnetic Interference Shielding ◽  
Textile Materials ◽  
Electromagnetic Shield ◽  
Conductive Textile

This article reviews the preparation, development and characteristics of conductive polymer-based electro-conductive textile composites for electromagnetic interference shielding. Modification of ordinary textile materials in the form of electro-conductive composites makes them suitable for this purpose. Various metallic and non-metallic electro-conductive textiles have been explored here as the material for electromagnetic shielding. Different approaches of preparing textile electromagnetic shield have been described here. Recent advancements of application of conductive polymers in the field of textile electromagnetic shielding are described. Conductive polymer-coated textile materials showed superior electrical property as electromagnetic shield. Different methods of applications of conductive polymers onto textile surface are described here with their relative merits and demerits. Different conductive polymer-coated woven and nonwoven fabrics prepared by various researchers for electromagnetic shielding are taken into account. The effects of different process parameters of polymer processing on electromagnetic shielding are described.

scholarly journals Shield Effect Of Functional Interlining Fabric

2015 ◽  
Vol 15 (2) ◽  
pp. 93-98 ◽  
Author(s):  
Bosiljka Šaravanja ◽  
Krešimir Malarić ◽  
Tanja Pušić ◽  
Darko Ujević
Keyword(s):  
Electromagnetic Interference ◽  
Electronic Devices ◽  
Scanning Electron Microscopy Micrographs ◽  
Dry Cleaning ◽  
Protective Properties ◽  
Protection Efficiency ◽  
Degree Of Protection ◽  
Functional Textiles ◽  
Before And After ◽  
Cleaning Treatment

AbstractElectromagnetic interference (EMI) have become very serious in a variety of different electronic equipments, such as personal computers (frequency at several GHz), mobile devices (0.9 – 2.4 GHz) and similar. This imposes the need for setting boundaries for EM emission of electric and electronic devices in order to minimize the possibility of interference with radio and wireless communications. Functional textiles can offer protective properties against EM radiation. The aim of this study is to investigate the degree of protection against EM radiation provided by polyamide copper-coated interlining fabric before and after dry cleaning treatment. EM protection efficiency of the interlining functional fabric is explored on both sides at the frequencies of 0.9; 1.8; 2.1 and 2.4 GHz. The results obtained have shown that the interlining fabric has good protective properties against EM radiation, but after dry cleaning, treatment reduction is observed. Scanning electron microscopy micrographs of the interlining surface confirms shield effect decline due to degradation and firing of the copper layers during the process of dry cleaning.

Sign in / Sign up

Export Citation Format

Share Document