크리스티 맷슨의 자카드 위빙에 적용된 일렉트로닉 텍스타일 연구

김종옥 한국기초조형학회 2019 기초조형학연구 Vol.20 No.1

The purpose of this study was to investigate the expressive characteristics of electronic textiles in interactive weaving works by Christy Matson. It is no exaggeration to say that electronic textiles are playing critical roles in the research and development process of wearable technologies capable of real-time monitoring. In the present study, electronic textiles were presented a new in two paradigms, "in put and out put textiles." In put textiles are electronic, being charged with electric currents. They can serve as soft switches themselves and send out in put signals. Reacting to signals reaching the microboard, out put textiles are electronic ones to serve as out puts. They are an extended paradigm of smart textiles. The expressive characteristics of these new electronic textile categories were analyzed in terms of materials, techniques, and installations based on Christy Matson's jacquard weaving. The analysis results led to a conclusion that they were strongly characterized by the installation features of interior textiles based on input electronic weaving in various conducting materials. The study thus proposes the possibilities of developing diverse interactive textile designs based on the application of smart textile expressions and hopes that its findings will serve as guidelines to lead the smart textile industry. 본 연구의 목적은 크리스티 맷슨의 인터랙티브 위빙 작품에서 표현된 일렉트로닉 텍스타일의 표현 특성을 고찰하는데 있다. 텍스타일 분야에서 실시간 모니터링이 가능한 웨어러블의 기술들이 연구, 개발되고 있는 과정에서일렉트로닉 텍스타일은 중요한 역할을 하고 있다고 해도 과언이 아니다. 이에 본 연구에서 일렉트로닉 텍스타일을 ‘인풋(In Put) 텍스타일’과 ‘아웃풋(Out Put) 텍스타일’의 두 가지 패러다임으로 분류하여 새롭게 제시하였다. 전류가 통하는 텍스타일이며, 스스로 소프트 스위치의 역할이 가능하여 인풋의 신호를 보낼 수 있는 텍스타일과마이크로 보드로 전달된 신호에 따라 반응하는 아웃풋의 역할을 하는 일렉트로닉 텍스타일로 분류하였고 이는스마트 텍스타일의 확장된 패러다임으로 보았다. 이렇게 새롭게 분류한 일렉트로닉 텍스타일의 표현 특성을 크리스티 맷슨의 자카드 위빙을 근거로 재료, 기법, 설치 특성으로 나누어 분석하였다. 이에 다양한 전도성사를 활용한 인풋 일렉트로닉 위빙과 이를 활용한 인터랙티비티의 설치는 공간과 어우러지는 특성이 강하게 보이고 있다는 결과를 도출할 수 있었다. 이를 통해 인테리어 공간을 위한 일렉트로닉 텍스타일의 요소로 활용가능성을 알수 있었다. 이는 다양한 인터랙티브 텍스타일디자인에 관한 개발이 가능함을 제안하며, 스마트 섬유산업을 이끌어 갈 수 있는 가이드라인으로 활용될 수 있기를 기대하는 바이다.

Woven resistive switching using aluminum and carbon fibers for memory devices

이미정 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0

Recently, wearable electronics such as google glasses and smart watch were launched in the market to recieve increasing attention as new generation electronic devices. In the near future, wearable electronics will be literally‘wearable’as smart clothing, smart fabrics and electronic textile form. Some researchers reported electronic textiles suitable for integration of devices using metal wire or conductive yarn. In this paper, we fabricated resistive switching memory devices using one dimensional conductive yarn for flexible electronic textile based on solution processes. Conducting fibers costructing texture were fabricated using and Al coated on carbon yarn, which act as an electrode. Carbon yarns, core of fiberes, were exposed to catalyst and immersed in alumi num precursor solution. Then Polymethylmethacrylate (PMMA) is coated on the conductive aluminium yarn using dip coating method to prevent a short between condcuting fibers and to act as a resistive switching layer. Carbon yarn was placed on the PMMA/Al coated yarn perpendiculary to form another electrode. We observed resistive switching characteristics of Carbon/PMMA/Al/Carbon fiber cross structure. Without forming process, the devices show bipolar resistive switching. The virgin device is in low resistance state. When positive bias is applied, the device switches to high resistance state. In this manner, ‘write’ and ‘erase’ operation was possible switch the resistance of the junction devices of two fibers. Interesting thing is the switching of resistivity worked even more stably without insulating PMMA layer. The device performed with switching more than 100 cycles endurance and retention properties up to 10000s only with two conducting fibers crossed. According to EDS and SEM results, we contemplate that resistive switching occurs in the Al layer which containes significant oxygen level to show native oxide layer of aluminum involved in the process. Furthermore, XPS analysis showed that new phase could be the main reason for the unique properties of resistive switching with two conducting layers which was not observed in conventional metal/metal structure. Switching mechanism with aluminum/carbon structure could be explained in this work with various analysis at the interface and by exploring different configuration of the device structure. Although the study is in early stage, this result shows the possibility of simple approach towards woven electronics using only flexible conductive yarns working with novel mechanism.

Thermal Analysis and Testing of a Heat Pipe With Woven Wired Wick

Seok-Hwan Moon,Gunn Hwang,Sung-Jin Kim,Jeong-Ki Seo IEEE 2014 IEEE transactions on components, packaging, and ma Vol.4 No.6

<P>The heat generation of electronic systems has been increasing because of the increase in the speed and density of such systems. High-power light-emitting diode and power semiconductor modules are examples of electronic systems that exhibit the aforementioned thermal problem. Recently, microsized cooling devices that are developed using the semiconductor process of silicon and glass have been used as electronic cooling solutions. However, microsized cooling devices with an equivalent diameter of less than 1 mm have low cooling capability close to 10 W. Therefore, cooling devices that have high cooling capability are needed in the field of electronic cooling. In this paper, a woven wire wick with a high capillary limit and high productivity was developed, and small-sized heat pipes with outer diameters of 3 and 4 mm were designed, manufactured, and tested. Performance test results show the maximum cooling capability of 27.9 W at a working temperature of 90 °C for the small-sized heat pipe with length of 300 mm and outer diameter of 4 mm. The capillary radius distributions in the vapor-liquid meniscus and the pressure distributions in the vapor and liquid paths were obtained through numerical analysis. The obtained maximum cooling capability at various working temperatures was compared with the experimental results. The maximum cooling capability was compared with that of other wick structures as well.</P>

Anomalous Stretchable Conductivity Using an Engineered Tricot Weave

Lee, Yong-Hee,Kim, Yoonseob,Lee, Tae-Ik,Lee, Inhwa,Shin, Jaeho,Lee, Hyun Soo,Kim, Taek-Soo,Choi, Jang Wook American Chemical Society 2015 ACS NANO Vol.9 No.12

<P>Robust electric conduction under stretching motions is a key element in upcoming wearable electronic devices but is fundamentally very difficult to achieve because percolation pathways in conductive media are subject to collapse upon stretching. Here, we report that this fundamental challenge can be overcome by using a parameter uniquely available in textiles, namely a weaving structure. A textile structure alternately interwoven with inelastic and elastic yarns, achieved via a tricot weave, possesses excellent elasticity (strain up to 200%) in diagonal directions. When this textile is coated with conductive nanomaterials, proper textile engineering allows the textile to obtain an unprecedented 7-fold conductivity increase, with conductivity reaching 33,000 S cm<SUP>–1</SUP>, even at 130% strain, due to enhanced interyarn contacts. The observed stretching conductivity can be described well using a modified 3D percolation theory that reflects the weaving effect and is also utilized for stretchable electronic interconnects and supercapacitors with high performance.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2015/ancac3.2015.9.issue-12/acsnano.5b05465/production/images/medium/nn-2015-05465x_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn5b05465'>ACS Electronic Supporting Info</A></P>

Preparation of antibacterial poly(acrylic acid)-grafted nonwovens using electron beam-induced graft polymerization

김문배,손준용,신준화,정찬희,신관우,황인태 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.1