Colorful textile antennas integrated into embroidered logos

We present a new methodology to create colorful textile antennas that can be embroidered within logos or other aesthetic shapes. Conductive threads (e-Threads) have already been used in former embroidery unicolor approaches as attributed to the corresponding conductive material, viz. silver or copper. But so far, they have not been adapted to \u27print\u27 colorful textile antennas. For the first time, we propose an approach to create colorful electronic textile shapes. In brief, the embroidery process uses an e-Thread in the bobbin case of the sewing machine to embroider the antenna on the back side of the garment. Concurrently, a colorful assistant yarn is threaded through the embroidery needle of the embroidery machine and used to secure or \u27couch\u27 the e-Threads onto the fabric. In doing so, a colorful shape is generated on the front side of the garment. The proposed antennas can be unobtrusively integrated into clothing or other accessories for a wide range of applications (e.g., wireless communications, Radio Frequency IDentification, sensing)

Durability of Wearable Antennas Based on Nonwoven Conductive Fabrics: Experimental Study on Resistance to Washing and Ironing

Adhesive nonwoven conductive fabrics are appealing materials for fabricating fully textile antennas for wearable wireless systems. Wearable antennas should be flexible, lightweight, and mechanically resistant. Additionally, the antenna performance should be robust to activities related to daily use of garments, such as washing and ironing. Accordingly, in this work, the results of several washing tests performed on fully textile antennas fabricated by exploiting three different adhesive nonwoven conductive fabrics are reported

Full embroidery designed electro-textile wearable tag antenna for WBAN application

A flexible and totally wearable textile antenna is proposed by embroidering the conductive threads into garments. A purely polyester substrate has been utilized, which provides a tag that can be easily integrated with the clothes. The proposed tag antenna is small with dimensions of 72 × 20 × 2.75 mm3 and offers an enhanced performance in terms of gain and stability when worn on different body locations. Experimental results demonstrate an improved impedance matching owing to the elasticity of the E-shaped inductive feeder. Close agreement has been achieved between the simulated and measured results

Recent advances of wearable antennas in materials, fabrication methods, designs, and their applications: state-of-the-art

The demand for wearable technologies has grown tremendously in recent years. Wearable antennas are used for various applications, in many cases within the context of wireless body area networks (WBAN). In WBAN, the presence of the human body poses a significant challenge to the wearable antennas. Specifically, such requirements are required to be considered on a priority basis in the wearable antennas, such as structural deformation, precision, and accuracy in fabrication methods and their size. Various researchers are active in this field and, accordingly, some significant progress has been achieved recently. This article attempts to critically review the wearable antennas especially in light of new materials and fabrication methods, and novel designs, such as miniaturized button antennas and miniaturized single and multi-band antennas, and their unique smart applications in WBAN. Finally, the conclusion has been drawn with respect to some future directions

Abstracts & Author Biographies for Textile Society of America, \u3ci\u3e15th Biennial Symposium (2016): Crosscurrents: Land, Labor, and the Port\u3c/i\u3e

Dr. Heather J Abdelnur, Ph.D. Reena Aggarwal Patricia Alvarez Cecilia Anderson Emily Anderson Lynne Anderson Jaiya A Anka Adebowale Biodun Areo and Margaret Olugbemisola Areo Margaret Olugbemisola Areo and Adebowale Biodun Areo David Arrellanes Jenny Balfour-Paul Suzi Ballenger Ruth Barnes Jody Benjamin Carole F. Bennett Julie Berman Noga Bernstein Medha Bhatt Amy Bogansky Elaine Bourque Laurie A Brewer Carrie Brezine Donna Brown Sarah S. Broomfield Susan Brown Heather R Buechler Shelby A Burchett Tara R Bursey Bonnie S. Carter Nynne J Christoffersen Laura Cochrane Lia Cook Françoise Cousin Jamie Credle Maria Curtis Pamela I Cyril-Egware Sonja K Dahl Mary Lou Davis Virginia Davis Deborah Deacon Alejandro B. de Avila Corinne Debaine-Francfort Amanda J Denham Sophie Desrosiers Sophie Desrosiers & Corinne Debaine-Francfort Sudha Dhingra Textile Crafts of India Katharine A. Diuguid Sharon Donnan Frances Dorsey and Robin E. Muller Sharmila Dua Maximilien Durand Mercedes Durant Philippe Dwyer and Rebecca. A. Zerby Eiluned M Edwards Benjamin Ehlers Catharine Ellis Deborah L Emmett Emily A. Engel and Maya Stanfield-Mazzi Leila Eslami Shirazi Faegheh Sarah E. Fee Andrea V Feeser Blenda Femenías Chriztine Foltz Cynthia Fowler Kate Frederick Gao Xia Carolina Gana and Lynne Jenkins Amalia Ramírez Garayza Jenny Garwood Alison A. Gates Surabhi Ghosh Rachel Green Gaby Greenlee Anu H Gupta and Shalina Mehta Thea Haines Louise Hamby and Valerie Kirk Karen Hampton Michaela Hansen Donna Hardy Joan G Hart Kimberly Hart Andrea M. Heckman Sandra L Heffernan Jan Heister Sarah Held Angela Hennesy Ines Hinojosa and Laurie Wilkins Memory Holloway Sylvia W Houghteling Kate Irvin Carol James Janis Jefferies Janis K Jefferies and Barbara Layne Lynne Jenkins and Carolina EunKyung (E.K.) Jeong Donald Clay Johnson Susan Kaiser and Minjung E Lee Jean L Kares Anjali Karolia Hiroko Karuno Alice Kettle Rebecca J. Keyel Valerie Kirk and Louise Hamby Jeana Eve Klein Sirpa Kokko and Riikka H Räisänen Studia Vernacula Deborah E Kraak Sumru B Krody Wendy S Landry Eleanor A Laughlin Minjung E Lee and Susan Kaiser V Margaret L Leininger Margaret L Leininger Tasha Lewis and Helen Trejo The Cultivator Transactions of the New York Agricultural Society The National Wool Grower American Sheep Industry Christina Lindholm Christina Lindholm Mary A Littrell David Loranger and Eulanda Sanders Shannon C Ludington Joanne Lukacher Caitrin Lynch Suzanne P MacAulay Louise M Macul Jane A Malcolm-Davies Kathleen Mangan Lavanya Mani Diana Marks Dawn G. Marsh Christine Martens Marcella Martin Bettina L Matzkuhn Suzanne H McDowell Julia McHugh MacKenzie Moon Ryan Anu H Gupta and Shalina Mehta Karina R Melati Perette E Michelli Eric Mindling Kate Mitchell Rebecca J Summerour and Dana Moffett Robin Muller and Frances Dorsey Hiroshi Murase Vasantha Muthian Willian Nassu Jeff Neale Sumiyo Okumura Fannie Ouyang Ava B Pandiani Slit Tapestry Red/Green Raksha Parekh Teresa A Paschke Pooja R. Pawar Karin E Peterson and Leisa Rundquist Amanda H Phillips Everyday Luxuries Paul Pressly Amy Putansu Riikka H Räisänen and Sirpa Kokko Uthra D Rajgopal Annie Ringuedé Kirsty M Robertson Lesli Robertson Regina A Root Nancy B Rosoff Ann P Rowe Leisa Rundquist and Karin E Peterson Katie M Sabo Stephanie Sabo Shohrat S. Saiyed Eulanda Sanders and David Loranger and Donna R. Danielson Laura I Sansone Joan Saverino Jessica L. Shaykett Jess Sheehan Lacy M Simkowitz Ruth Katzenstein Souza Carmela Spinelli Jeffrey C Splitstoser Maya Stanfield-Mazzi and Emily A. Engel Kathleen A Staples Laurie Carlson Steger Brooks Harris Stevens Cathy Stevulak Rebecca J Summerour and Dana Moffett Maleyne M Syracuse Helen Trejo and Tasha Lewis Kelly Thompson Linda J Thorsen Lynn C Tinley Tomoko Torimaru Helen Trejo Marta D. Turok Deborah Valoma Lisa M VandenBerghe Storm Janse van Rensburg Pauline M Verbeek-Cowart Belinda J. von Mengersen Lisa Vinebaum Yoshiko Wada Mary E Walker Sera J Waters Melinda Watt Marcia Weiss Susanna White Namita Wiggers Laurie Wilkins and Ines Hinojosa Robin B. Williams Liz Williamson Kathleen Curtis Wilson Christine A Wiltshier Charlotte Wittmann Sarah J Worden Ayşem Yanar Rebecca A. Zerby and Philippe Dwyer Callen Zimmerman Stephanie Zollinger Martha Zunig

Engineering of hybrid materials for self-powered flexible sensors

Department of Energy Engineering (Energy Engineering)Along with the 4th industrial revolution, the great advance in wearable electronics has led a new paradigm in our life. Especially, wearable sensor technology has received great attention as promising candidates to improve the quality of life by realizing the ???Internet of Things??? which can be utilized in daily healthcare, intelligent control, daily activity monitoring, and human-machine interface systems. The ideal wearable devices require several characteristics providing light weight, flexible, unobtrusive, autonomously powered for the convenience of user and sustainable uses. Although various emerging technologies have been suggested to meet these requirements, there are still challenges for highly flexible and unobtrusive forms, multifunctionality, and sustainable uses, which are directly related to widespread practical applications. In response to these requirements, several approaches to explore functional materials and to design the effective structures for advanced sensor performances with sustainable uses, high sensitivity, and multifunctionality. For sustainable uses, self-powered sensing system can be developed by triboelectric/piezoelectric/pyroelectric effect, which can rule out any problems with power sources. For wearable and flexible form factors, textile and extremely thin films, which are mountable and attachable on the human body, are used instead of conventional obtrusive devices, improving the wearing sensing of devices. Moreover, the selection of multifunctional materials and modification of material characteristics can realize multifunctionality which can respond to different stimuli (pressure and temperature) simultaneously. Furthermore, soft/hard and organic/inorganic hybrid materials can be used for effective design of high performance wearable sensor by distribution control in dissimilar materials, which is attributed to effectively localized strain and large contrast of dielectric properties. Therefore, self-powered wearable sensors can be developed with functional materials, unique design and novel approach for characteristic modification, which can provide a promising platform to realize ideal wearable sensors for future applications such as daily healthcare, intelligent control, daily activity monitoring, and human-machine interface systems. In this thesis, we suggest the strategy for advanced sustainable wearable sensors with better wearing sensation, multimodality, and enhanced sensory functions through structure design and modification of material characteristics. Firstly, we briefly summarize the fundamental working principles, the latest research trends, and potential applications in Chapter 1. In Chapter 2, we demonstrate as-spun P(VDF) fiber-based self-powered textile sensors with high sensitivity, mechanical stability, and washing durability. In Chapter 3, we introduce multimodal wearable sensors without signal interference based on triboelectric and pyroelectric effect, which is attributed to controllable polarity of P(VDF-TrFE) via ferroelectric polarization. In Chapter 4, we suggest a novel method for high performance of triboelectric sensors based on alternating P(VDF-TrFE)/BaTiO3 multilayer nanocomposites, which is attributed to the efficient stress concentration and large contrast of dielectric properties. Lastly, we summarize this thesis with future prospects in Chapter 5.clos

Smart Sensor Technologies for IoT

The recent development in wireless networks and devices has led to novel services that will utilize wireless communication on a new level. Much effort and resources have been dedicated to establishing new communication networks that will support machine-to-machine communication and the Internet of Things (IoT). In these systems, various smart and sensory devices are deployed and connected, enabling large amounts of data to be streamed. Smart services represent new trends in mobile services, i.e., a completely new spectrum of context-aware, personalized, and intelligent services and applications. A variety of existing services utilize information about the position of the user or mobile device. The position of mobile devices is often achieved using the Global Navigation Satellite System (GNSS) chips that are integrated into all modern mobile devices (smartphones). However, GNSS is not always a reliable source of position estimates due to multipath propagation and signal blockage. Moreover, integrating GNSS chips into all devices might have a negative impact on the battery life of future IoT applications. Therefore, alternative solutions to position estimation should be investigated and implemented in IoT applications. This Special Issue, “Smart Sensor Technologies for IoT” aims to report on some of the recent research efforts on this increasingly important topic. The twelve accepted papers in this issue cover various aspects of Smart Sensor Technologies for IoT

Colorful Textile Antennas Integrated into Embroidered Logos

We present a new methodology to create colorful textile antennas that can be embroidered within logos or other aesthetic shapes. Conductive threads (e-threads) have already been used in former embroidery unicolor approaches as attributed to the corresponding conductive material, viz. silver or copper. But so far, they have not been adapted to ‘print’ colorful textile antennas. For the first time, we propose an approach to create colorful electronic textile shapes. In brief, the embroidery process uses an e-thread in the bobbin case of the sewing machine to embroider the antenna on the back side of the garment. Concurrently, a colorful assistant yarn is threaded through the embroidery needle of the embroidery machine and used to secure or ‘couch’ the e-threads onto the fabric. In doing so, a colorful shape is generated on the front side of the garment. The proposed antennas can be unobtrusively integrated into clothing or other accessories for a wide range of applications (e.g., wireless communications, Radio Frequency IDentification, sensing)