• 제목/요약/키워드: EAPap

검색결과 33건 처리시간 0.022초

생체모방 종이구동기의 원리 및 응용 가능성 (Electroactive Paper Actuator: Principle and Its Application Possibility)

  • 윤성률;정우철;강유근;김재환
    • 제어로봇시스템학회논문지
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    • 제10권11호
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    • pp.971-975
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    • 2004
  • This paper deals with the idea of Electroactive paper (EAPap) actuator and its application possibility. EAPap is a paper that produces large displacement under electrical excitation. EAPap is made with a cellulose paper by constructing thin electrodes on both sides of the paper. When electrical voltage is applied on the electrodes, the EAPap produces bending displacement. EAPap has merits in terms of lightweight, dryness, large displacement output, low actuation voltage and low power consumption. Since the power requirement is so small that it is suitable for microwave-driven smart actuators. This paper describes the working principle and performance of EAPap as an artificial muscle and its possibility far many applications.

Electroactive Paper(EAPap)를 이용한 표면탄성파 센서 (Surface Acoustic Wave Sensor Using Electroactive Paper(EAPap))

  • 이민희;김주형;김재환
    • 한국소음진동공학회논문집
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    • 제18권11호
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    • pp.1128-1133
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    • 2008
  • Cellulose based electroactive paper(EAPap) has been developed as a new smart material due to its advantages of piezoelectricity, large displacement, low power consumption, low cost and flexibility. EAPap can be used for a surface acoustic wave (SAW) device using the piezoelectric property of EAPap, resulting in the cost effective and flexible SAW device. In this paper, inter digit transducer(IDT) structure using lift-off technique with a finger gap of 10mm was used for micro fabrication of the cellulose EAPap SAW devices. The performance of IDT patterned SAW device was characterized by a Network Analyzer. The feasibility of cellulose EAPap as a potential acoustic device was presented and explained.

셀룰로오스 압전 종이를 이용한 진동 센서 응용 연구 (A study on the vibration sensor application of cellulose piezoelectric paper)

  • 김흥수
    • 한국전산구조공학회:학술대회논문집
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    • 한국전산구조공학회 2011년도 정기 학술대회
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    • pp.288-289
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    • 2011
  • 압전 효과에 기초한 셀룰로오스 압전 종이의 진동센서 응용 가능성을 알아보았다. EAPap (Electroactive paper)은 재생과정과 테입 캐스팅을 이용해 만들었으며, 얇은 적층 필름을 이용해 코팅하였다. EAPap 샘플을 알루미늄 외팔보에 부착하여 진동 실험을 수행하였다. EAPap 센서의 출력을 비교하기 위해 가속도계를 이용하여 보의 응답 특성을 동시에 측정하였으며, 유한요소법을 이용해 보의 동특성을 구하여 비교하였다. EAPap 센서는 주위 환경 노이즈의 영향을 많이 받았는데, 접지와 절연을 통해 이러한 노이즈의 영향을 많이 감소시킬 수 있었으며, 실험결과로부터 EAPap의 진동센서 응용 가능성을 확인하였다.

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전도성 폴리머와 셀룰로오스 종이를 결합한 EAPap 작동기 (Conductive Polymer Coated Electro-active Paper (EAPap) as Hybrid Actuator)

  • 윤성률;김재환
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2004년도 추계학술대회논문집
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    • pp.275-278
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    • 2004
  • Electro-Active Paper (EAPap) is attractive for EAP actuator due to its merit in terms of light weight, dry condition, large displacement output, low actuation voltage and low power consumption. The EAPap is based on cellulose paper, and is shown to involve primarily transport of ions in response to an external electric field. This actuating mechanism is similar to conductive polymer based actuators. For performance improvement of EAPap, hybrid actuators are tried. The actuators based on cellulose paper attached conducting polypyrrole, polyaniline and single wall carbon nanotube/polyaniline(emeraldine base) have been achieved by Electro chemical deposition and mechanical deposition of the polymers onto cellulose paper.

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CP-EAPap 생체모방 작동기의 제조 및 성능 (CP-EAPap biomimetic actuator fabrication and performance)

  • 이곡파;김재환;데시판데
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2005년도 춘계학술대회논문집
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    • pp.360-363
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    • 2005
  • Biomimetic actuators composed of cellophane with an electrically conducting polyaniline(PANI) film have been fabricated and tested in air ambience conditions doped with two different counter ions such as perchlorate (${ClO_4}^-$) and tetrafluoroborate (${BF_4}^-$). Fabrication of the trilayer CP//CELLOPHANE//CP substantially enhanced the tip displacement (13.2mm) compared to the small displacement (8.3mm) of the bilaye. CP//CELLOPHANE. The ion migration among layers is the main factor behind the expansion of cellophane, while the expansion/contraction of PANI are dependent on the redox reaction of the polymer. The displacement of the composite is dominated by the humidity content. This implies that the actuation principle is possibly due to the assistance of water existing.

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Effect of Room Temperature Ionic Liquids Adsorption on Electromechanical Behavior of Cellulose Electro-Active Paper

  • Mahadeva, Suresha K.;Yi, Chen;Kim, Jae-Hwan
    • Macromolecular Research
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    • 제17권2호
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    • pp.116-120
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    • 2009
  • The cellulose smart material called electro-active paper (EAPap) is made by regenerating cellulose. However, the actuator performance is degraded at low humidity levels. To solve this drawback, EAPap bending actuators were made by activating wet cellulose films in three different room-temperature ionic liquids: l-butyl-3-methylimidazolium hexaflurophosphate ($BMIPF_6$), 1-butyl-3-methylimidazolium chloride (BMICL) and 1-butyl-3-methylimidazolium tetrafluroborate ($BMIBF_4$). In the results, the actuator performance was dependent on the type of anions in the ionic liquids, in the order of $BF_4$>Cl>$PF_6$. The BMIBF 4-activated actuator showed the maximum displacement of 3.8 mm with low electrical power consumption at relatively low humidity. However, the BMICL-activated actuator showed a slight degradation of actuator performance. Further performance and durability improvement will be possible once various ionic liquids are blended with cellulose.

Flexible Patch Rectennas for Wireless Actuation of Cellulose Electro-active Paper Actuator

  • Yang, Sang-Yeol;Kim, Jae-Hwan;Song, Kyo-D.
    • Journal of Electrical Engineering and Technology
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    • 제7권6호
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    • pp.954-958
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    • 2012
  • This paper reports a flexible patch rectenna for wireless actuation of cellulose electro-active paper actuator (EAPap). The patch rectenna consists of rectifying circuit layer and ground layer, which converts microwave to dc power so as to wirelessly supply the power to the actuator. Patch rectennas are designed with different slot length at the ground layer. The fabricated devices are characterized depending on different substrates and polarization angles. The EAPap integrated with the patch rectenna is actuated by the microwave power. Detailed fabrication, characterization and demonstration of the integrated rectenna-EAPap actuator are explained.

생체 모방 종이 작동기의 면내 변형에 관한 연구 (Study on In-plane Strains of Electro-Active Paper)

  • 정우철;김재환;이선곤;배성훈
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2005년도 추계학술대회논문집
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    • pp.727-730
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    • 2005
  • Cellulose based Electro-Active Papers (EAPap) is very promising material due to its merits in terms of large bending deformation, low actuation voltage, ultra-lightweight, and biodegradability. These advantages make it possible to utilize applications, such as artificial muscles and achieving flapping wings, micro-insect robots and smart wall papers. This paper investigates the in-plane strains of EAPap under electric fields, which are useful for a contractile actuator application The preparation of EAPap samples and the in-plane strain measurement system are explained, and the test results are shown in terms of electric field, frequency and the oriental ions of the samples. The power consumption and the strain energy of EAPap samples are discussed. Although there are still unknown facts in EAPap material, this in-plane strain may be useful for artificial muscle applications.

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전도성 폴리아닐린(Polyaniline)을 이용한 전기작동 종이(EAPap)의 굽힘변형 개선 (Bending Displace Improvement of Electro-active Paper Using Conductive Polyaniline Coating)

  • 김주형;윤성률;김재환
    • 한국소음진동공학회논문집
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    • 제18권12호
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    • pp.1310-1316
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    • 2008
  • Bi-layer and tri-layer structures of electro-active paper(EAPap) using conductive polyaniline(PANI) coating were investigated to improve bending displacement of cellulose EAPap. Two different counter ions, perchlorate($CIO_4^-$) and tetrafluoroborate($BF_4^-$), are used as dopant ions in the PANI processing. The actuation performances of hi-layer and tri-layer structure are evaluated in terms of tip displacement, blocked force, strain energy density and power output density. The actuation performance of the tri-layer actuator was better than the hi-layer structure, and the maximum displacement and blocked force of tri-layer $CIO_4^-$ doped-PANI-EAPap were 13.2 mm and 0.15 mN, respectively. Also the power output of the actuator is similar to the required power of biological muscle application.