• 한국전기전자재료학회논문지
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• 제26권5호
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• pp.367-372
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• 2013

In this paper, micro dried bio-potential electrodes are demonstrated for sEMG (surface ElectroMyoGraphic) signal measurement using conductive epoxy on the textile fabric. Micro dried bio-potential electrodes on the textile fabric substrate have several advantages over the conventional wet/dry electrodes such as good feeling of wearing, possibility of extended-wearing due to the good ventilation. Also these electrodes on the textile fabric can easily apply to the curved skin surface. These electrodes are fabricated by the screen-printing process with the size of $1mm{\times}10mm$ and the resultant resistance of these electrodes have the average value of $0.4{\Omega}$. The conventional silver chloride electrode shows the average value of $0.3{\Omega}$. However, the electrode on the textile fabric are able to measure the sEMG signal without feeling of difference and this electrode shows the lower resistance of $1.03{\Omega}$ than conventional silver chloride electrode with $2.8{\Omega}$ in the condition of the very sharp curve surface (the radius of curvature is 40 mm).

• 복식문화연구
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• 제9권1호
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• pp.100-110
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• 2001

The purpose of this study is to identify Internet usage for the implementation of Quick Response Supply Chain Management across Business-to-Business Electronic Commerce in textile and apparel industry. This paper involves theoretical studies, which developed 3 steps to analyze the relationship of B-to-B EC, SCM, and QR, and provides broader awareness of new trend in the textile and apparel industry. SCM as one of B-to-B EC solutions introduced QR into the textile and apparel industry in 1985, and B-to-B EC is regarded as a means for achievement of QR with the widespread adoption of Internet technologies by businesses over the last four years. Finally, the Internet enables textile and apparel firms to access international networks of suppliers, distributors, and customers, so Internet-based B-to-B EC, SCM, and QR with Internet/EDI and XML/EDI are expected to become a central part in propelling fashion business into new directions.

• 한국정보시스템학회지:정보시스템연구
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• 제11권1호
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• pp.151-173
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• 2002

The purpose of the current study is to identify the critical success factors of information systems in small-and-medium-sized firms in general, and also to investigate any differences of those critical success factors between two different industries: the electronic and textile industries. To accomplish this purpose, we collected and analyzed 115 and 108 questionnaires from the electronic and textile industries respectively. From the results of statistical analysis, critical success factors of small-and-medium-sized companies in general were obtained, and critical success factors from two industries were compared and the differences were able to be identified. The results of the analysis of the questionnaires are as follows: 1) The organizational characteristics of the electronic industry showed some differences from those of the textile industry; 2) Small-and-medium-sized companies in the electronic industry appeared to have some differences from companies in the textile industry in terms of critical success factors of information systems. Such factors as education and training, quality level of software, capability of users, business processes, standardization of data management, level of organization, user involvement, support of top management were significantly different between two industries.

• Bulletin of the Korean Chemical Society
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• 제32권7호
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• pp.2279-2285
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• 2011

The geometries, electronic structures and absorption spectra of the two organic triphenylamine-based dyes TA-St-CA and TA-DM-CA, containing identical electron donors and acceptors but the different conjugated bridges, were studied by density functional theory (DFT) at the B3LYP and PBE1PBE levels, respectively. The influence of para-orientating methoxyl units on the electronic structures and light absorption properties of the dyes and the consequent photovoltaic performance of the dye-sensitized solar cells (DSSCs) were investigated in detail. The results indicate that the introduction of the para-orientating methoxyl units into the conjugated bridge induces the increased absorption wavelength as well as the more negative EHOMO corresponding to the bigger driving force $(E_{I^-/I^-_3}-E_{HOMO})$ for dye reduction, which together improve the photovoltaic performance of TA-DM-CA, although there is a decline of the open circuit voltage caused by the more negative $E_{LUMO}$.

• 감성과학
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• 제24권3호
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• pp.81-90
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• 2021

본 연구에서는 전기 근육 자극(electrical muscle stimulation, EMS)에 사용되는 기존의 하이드로겔 패드의 단점인 사용 편의성, 쾌적성 등을 보완할 수 있는 e-textile (electronic textile)을 이용한 전기 근육 자극(electrical muscle stimulation, EMS) 패드인 EMSCT (electrical muscle stimulation conductive textile)를 연구를 하고자 하였다. SWCNT (Single-Walled Carbon Nanotube)와 H₂O의 농도 및 함침 공정 횟수를 변수로 하여, EMSCT는 5가지 직물(라디론, 네오프렌, 스판쿠션, 폴리100%, 베르가모)에 전도성을 부여하여 실험이 진행되었다. SWCNT (Single-Walled Carbon Nanotube)와 H₂O을 이용한 패딩 공정을 거쳤으며, 교류 측정 결과 하이드로겔과 가장 유사한 교류를 나타내는 것은 SWCNT:H₂O = 2:1의 베르가모 원단이라는 결과를 얻을 수 있었다. 또한, 편의성, 사용성, 심리적 만족성에 관한 사용성 평가를 통해 기존 하이드로겔 패드에 비해 EMSCT가 좋은 사용성을 가진다는 결과를 얻을 수 있다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.453-456
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• 2005

Significance verification of electric fabric compared with existing electrode is very useful for the wearable and ubiquitous healthcare. In this paper, we verified the significance between Ag/AgCl electrode and electric fabric in dry-normal condition through heart rate variability analysis. We can find 98 % or more similarity about low frequency and high frequency which is important parameter for the heart rate variability analysis between two different electrodes in experiment. From this result, we confirmed that the power spectral density of low frequency, high frequency component from the electric fabric has high similarity compared with the result of heart rate variability from Ag/AgCl electrode in dry-normal condition.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2000년도 추계학술발표대회 논문집
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• pp.183-186
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• 2000

A new textile metal matrix composite fur electronic packaging was developed and characterized. The thermal management materials consist of a plain woven carbon fabric as reinforcement and pure aluminum as matrix. The finite element method has been utilized in the analysis of thermal stress between the constituent components of packaging. The prototype part was manufactured by the liquid pressurizing method. The composite has CTE values of 4 to $5{\times}10^{-6}\;^{\circ}C^{-1}$10 in the range of $25^{\circ}C$ ~ 175$^{\circ}C$, resulting in good agreement with electronic materials such as Si and GaAs.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 봄 학술발표회 논문집
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• pp.36-39
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• 2003

Conducting polymers are finding increasing number of applications in various electronic devices such as chemical sensors, electrochromic display, light emitting diodes, etc. Polyaniline(PANI) ranks among highly prospective conduction polymers. PANI was first synthesis in 1862[1] and has been extensively studied as a conducting polymer since the 1980s[2]. The side range of electrical, electrochemical and optical properties coupled with good environmental stability makes PANI potentially attractive for application as an electronic material. (omitted)

• 센서학회지
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• 제27권3호
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• pp.186-191
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• 2018

Smart textile industries have been precipitously developed and extended to electronic textiles and wearable devices in recent years. In particular, owing to an increasingly aging society, the elderly healthcare field has been highlighted in the smart device industries, and pressure sensors can be utilized in various elderly healthcare products such as flooring, mattress, and vital-sign measuring devices. Furthermore, elderly healthcare products need to be more lightweight and flexible. To fulfill those needs, textile-based pressure sensors is considered to be an attractive solution. In this research, to apply a textile to the second layer using a pressure sensing device, a novel type of conductive textile was fabricated using vapor phase polymerization of poly(3,4-ethylenedioxythiophene) (PEDOT). Vapor phase polymerization is suitable for preparing the conductive textile because the reaction can be controlled simply under various conditions and does not need high-temperature processing. The morphology of the obtained PEDOT-conductive textile was observed through the Field Emission Scanning Electron Microscope (FESEM). Moreover, the resistance was measured using an ohmmeter and was confirmed to be adjustable to various resistance ranges depending on the concentration of the oxidant solution and polymerization conditions. A 3-layer 81-point multi-pressure sensor was fabricated using the PEDOT-conductive textile prepared herein. A 3D-viewer program was developed to evaluate the sensitivity and multi-pressure recognition of the textile-based multi-pressure sensor. Finally, we confirmed the possibility that PEDOT-conductive textiles could be utilized by pressure sensors.

• Bulletin of the Korean Chemical Society
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• 제31권9호
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• pp.2531-2536
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• 2010

Density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations have been employed to investigate the molecular structures and absorption spectra of two dyes containing diphenylaniline and 4-diphenylamino-diphenylaniline as donor moiety (TPA1 and TPA3). The geometries indicate that the strong conjugation is formed in the dyes. The electronic structures suggest that the intramolecular charge transfer from the donor to the acceptor occurs, and the electron-donating capability of 4-diphenylamino-diphenylaniline is stronger than that of diphenylaniline. The computed highest occupied molecular orbital (HOMO) energy levels are -5.31 and -4.90 eV, while the lowest unoccupied molecular orbital (LUMO) energies are -2.29 and -2.26 eV for TPA1 and TPA3, respectively, revealing that the interfacial charge transfer between the dyes and the semiconductor electrode are electron injection processes from the photon-excited dyes to the semiconductor conduction band. Furthermore, all the experimental absorption bands of TPA1 and TPA3 have been assigned according to the TDDFT calculations.