• 제목/요약/키워드: Conducting Polymer

검색결과 440건 처리시간 0.031초

감식초 농축액들의 향기성분 분석에 대한 전자코의 적용 (Application of Electronic Nose for Aroma Analysis of Persimmon Vinegar Concentrates)

  • 이부용
    • 한국식품과학회지
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    • 제31권2호
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    • pp.314-321
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    • 1999
  • 새로이 개발되어 식품과학 분야에 도입되기 시작한 conducting polymer로 구성된 32개의 센서를 장착한 전자코를 이용하여 감식초의 농축시 향기성분의 변화를 측정하고 그 데이터를 관능검사와 비교 분석하여, 감식초의 향기성분 분석에 전자코의 활용가능성 여부를 알아보았다. 관능검사와 유기산 분석결과는 감식초 농축액들간의 농축정도에 따른 향기성분 및 유기산 함량의 변화와 차이를 분명히 나타내고 있었으나, conducting polymer로 이루어진 32개의 센서 array가 장착된 전자코는 감식초의 농축 정도에 따른 향기 성분의 패턴 변화를 감지하지 못하고 모두 같은 패턴으로 나타내주고 있어서 conducting polymer 센서가 장착된 전자코는 감식초의 향기성분 분석에는 적합하지 않은 것으로 판단된다.

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기능성을 향상시킨 다양한 전도성 고분자의 전기 변색 현상 (Electrochromism of Various Conducting Polymers with Enhanced Functionality)

  • 고홍조;문봉진;이후성
    • 폴리머
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    • 제30권5호
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    • pp.367-372
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    • 2006
  • 전도성 고분자에 곁가지로 chromophore를 결합시켜 만든 다양한 전기 변색 물질과 그 특성을 소개하였다. 전도성 고분자로는 Polypyrrole, Polythiophene, Poly(3,4-ethylenedioxythiophene), Poly(cyclopen-tadithiophene), 및 poly (1,4-bis [2- (3,4-ethylenedioxy)thienyl] benzene)를 사용하고, chromophore로는 viologen과 perylenetetracarboxylic diimide를 사용한 경우에 대하여 설명하였다. 전도성 고분자와 thromophore의 변색 파장 범위가 다른 경우에는 변색의 다양성을 성취할 수 있었으며, 변색 파장 범위가 비슷한 경우에는 색대비를 높일 수 있다. 최대 색대비를 나타내는 필름의 두께를 쉽게 예측할 수 있는 방법도 설명하였다.

폴리머 기판위에 증착된 ZnO:Al 전도막의 특성연구 (Characterization of conducting aluminium doped zinc oxide (ZnO:Al) thin films deposited on polymer substrates)

  • 구홍모;김쇄현;박종완
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 추계학술대회 논문집 Vol.17
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    • pp.535-538
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    • 2004
  • Zinc Oxide (ZnO) films have attracted considerable attention for transparent conducting films, because of their high conductivity, good optical transmittance from UV to near IR as well as a low-cost fabrication. To increase the conductivity of ZnO, doping of group III elements (Al, Ga, In and B) has been carried out. Transparent conducting films have been applied for optoelectric devices, the development of the transparent conducting thin films on flexible light-weight substrates are required. In this research, the transparent conducting ZnO thin films doped with Aluminum (Al) on polymer substrates were deposited by the RF magnetron suputtering method, and the structural, optical and electrical properties were investigated.

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Impedance를 이용한 전도성고분자 센서의 에탄올 가스 감응특성 (Ethanol Gas Sensing Characteristics of Conducting Polymer Sensor Using Impedance)

  • 이경문;유준부;전희권;이병수;이덕동;허증수
    • 한국재료학회지
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    • 제13권3호
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    • pp.155-159
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    • 2003
  • The polypyrrole and polyaniline thin film sensors which were made by chemical polymerization were employed to detect ethanol gas. With a single sensor element we can obtain characteristic patterns of behaviour across a very wide frequency range when measuring either resistance or capacitance. Impedance spectroscopy was employed to study the gas sensing behavior of both capacitance and resistance based sensors with conducting polymer as the active sensing element.

Conducting Polymer Material Characterization Using High Frequency Planar Transmission Line Measurement

  • Cho, Young-Seek;Franklin, Rhonda R.
    • Transactions on Electrical and Electronic Materials
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    • 제13권5호
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    • pp.237-240
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    • 2012
  • A conducting polymer, poly 3-hexylthiophene (P3HT) is characterized with the metal-insulator-semiconductor (MIS) measurement method and the high frequency planar circuit method. From the MIS measurement method, the relative dielectric constant of the P3HT film is estimated to be 4.4. For the high frequency planar circuit method, a coplanar waveguide is fabricated on the P3HT film. When applying +20 V to the CPW on P3HT film, the P3HT film is in accumulation mode and becomes lossy. The CPW on P3HT film is 1.5 dB lossier than the CPW on $SiO_2$ film without P3HT film at 50 GHz.

PEDOT:PSS/Single Wall Carbon Nanotube Composite Nanoparticles as an Additive for Electric-double Layer Capacitor

  • Park, Jong Hyeok;Lee, Sang Young;Kim, Jong Hun;Ahn, Sunho
    • Journal of Electrochemical Science and Technology
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    • 제3권3호
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    • pp.143-148
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    • 2012
  • The unique effects of highly conductive conducting polymer/SWNT (single walled carbon nanotube) composite nanoparticles in electric double layer capacitors are studied for the enhancement of the adhesive properties, specific capacitance and power characteristics of the electrode. Because the conducting polymer/SWNT composite material, which is believed to act as a polymer binder, an active material for charge storage and a conducting agent, is well distributed on the activated carbon, greatly enhanced adhesion properties, cell capacitance and power characteristics were obtained.

New Morphology of Conducting Polythiophene

  • Karim Mohammad Rezaul;Lee Chul-Jae;Kim Hee-Jin;Bhuiyan Md Tauhidul Islam;Lee Mu-Sang
    • 한국고분자학회:학술대회논문집
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    • 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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    • pp.286-286
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    • 2006
  • We report on a fascinating morphology; giant spherical conducting polythiophene by the in-situ gamma radiation-induced chemical polymerization method. The resultant micron-size buckyball-shaped polymer structures were identified by high resolution transmission electron microscopy and scanning electron microscopy. Different characterizations e.g. Fourier transform infrared, x-ray diffraction, and x-ray photoelectron microscopy were utilized to prove that the new morphological conducting polythiophene was synthesized successfully by this novel method.

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Highly Conductive Flexible Transparent Electrode Using Silver Nanowires & Conducting Polymer

  • Seo, Dong-Min;Kim, Sang-Ho
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2012년도 제42회 동계 정기 학술대회 초록집
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    • pp.547-547
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    • 2012
  • As displays become larger and solar cells become cheaper, there is an increasing need for low-cost transparent electrodes. Intensive effort has been made to replace ITO (Indium Tin Oxide) based transparent electrode with cheap and flexible ones. Among those, silver nanowires have got limelight because of its great conductivity and flexibility. Even though the electric property of the Ag nanowire based transparent electrode surpassed ITO, the optical property needs to be improved (lower transmittance, higher haze). Here, we reported transparent electrode based on Ag nanowires and conducting polymer to improve optical properties. The Ag nanowires are coated onto PET films and the resulting transparent electrode film shows $200ohm/{\Box}$ resistance and > 90% optical transmittance.

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Supercapacitor용 도전성 고분자의 전기화학적 특성 (Electrochemical Properties of Conducting Polymer for Supercapacitor)

  • 강광우;김종욱;김명산;구할본;김형곤
    • 한국전기전자재료학회논문지
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    • 제14권4호
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    • pp.323-327
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    • 2001
  • The purpose of this study is to research and develop conducting polymer(CP) composite electrode for supercapacitor. The radius of semicircle of CP composite cell with polyaniline(PAn) composite electrode adding 30wt% acetylene black was small. The total resistance of supercapacitor cell mainly depended on internal resistance of he electrode. The discharge capacitance of supercapacitor cell with PAn composite electrode adding 30wt% acetylene black in 1st and 50th cycles was 27F/g and 31F/g at current density of 1mA/$\textrm{cm}^2$, respectively. Supercapacitor cell with PAn composite electrode adding 30wt% acetylene black showed a good cycliability. Supercapacitor cell of CP composite electrode with 1M LiClO$_4$/PC brings out god capacitor performance below 4V.

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Conducting Behavior of Carbosilane Dendrimers Including Palladium Ions

  • Kim, Chungkyun;Koo, Bon-Won;Lee, Sang-Bak;Song, Chung-Kun
    • Macromolecular Research
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    • 제10권3호
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    • pp.178-180
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    • 2002
  • The conducting behavior of dendritic carbosilanes including palladium ions (Pd$^{2+}$) has been measured. The palladium ion containing dendrimers were prepared by the addition of palladium dichloride to double-layered dendritic carbosilanes, which consist of phenylethynyl groups (-C≡CPh) on the outmost periphery as well as phenylethenyl and propyleneoxy groups (-CH=CPh- and (CH$_2$)$_3$O-) in the inner shell. By measuring conductivities, palladium ion containing dendrimers revealed an increasing tendency according to the increasing number of double bonds in the inner shells of dendritic carbosilanes.s.