• 제목/요약/키워드: PbTiO$_3$/P(VDF/TrFE)

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초전형 적외선 센서용 PbTiO3/P(VDF/TrFE) 박막의 제조 및 특성 (Fabrication and characteristics PbTiO3/P(VDF/TrFE) thin films for pyroelectric infrared sensor)

  • 권성열
    • 센서학회지
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    • 제12권1호
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    • pp.10-15
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    • 2003
  • 초전형 적외선 센서의 감지물질로 사용하기 위해 $PbTiO_3$/P(VDF/TrFE) 복합재료 박막을 스핀코팅방법을 사용하여 제작하였다. 시료는 65 wt% VDF와 35 wt% TrFE의 함량 P(VDF/TrFE) 분말을 사용하였으며 세라믹-고분자 복합재료를 제조하기 위하여 사용된 세라믹은 $PbTiO_3$ 분말을 사용하였다. 제조된 복합재료의 P(VDF/TrFE)와 $PbTiO_3$의 결합성을 확인하기 위해 제조된 박막의 표면은 SEM을 통해 관찰하였고 복합재료의 커패시턴스와 비유전율, 유전손실은 임피던스 분석기 (HP4192A)로 측정하였으며, 복합재료의 초전계수는 반도체 파라미터 분석기(HP4145B)로 조사하였다.

적외선 감지를 위한 0~3 $PbTiO_3$/P(VDF/TrFE) 복합체 필름의 향상된 초전 특성 (Improved Pyroelectric Characteristics of 0~3 $PbTiO_3$/P(VDF/TrFE) Composites Films for Infrared Sensing)

  • 권성열
    • 폴리머
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    • 제35권5호
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    • pp.375-377
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    • 2011
  • 두 단계 스핀 코팅 방법을 사용하여 세라믹 체적 분율 0.10과 0.13의 $PbTiO_3$/P(VDF/TrFE) 0~3형 복합재료를 제작하고 분석하였다. 0~3형 $PbTiO_3$/P(VDF/TrFE) 복합재료를 SEM 전자현미경 사진으로 성공적으로 확인할 수 있었다. 이러한 전자현미경 사진을 통하여 복합재료의 0~3형 구조를 재확인하였다. 0~3형 $PbTiO_3$/P(VDF/TrFE) 복합재료는 P(VDF/TrFE) 공중합체보다 센서용 전기적 특성이 우수함을 나타내었다. 그러므로 이러한 낮은 유전상수와 높은 초전계수를 나타내는 0~3형 $PbTiO_3$/P(VDF/TrFE) 복합재료는 더 높은 성능을 나타낼 수 있는 새로운 초전형 센서 재료로 사용될 수 있다.

The Fabrication and Characteristics of 0-3 PbTiO$_3$/P(VDF/TrFE) Nanocomposite Thin Films for Passive Pyroelectric Infrared Sensors

  • Kwon, Sung-Yeol
    • KIEE International Transactions on Electrophysics and Applications
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    • 제4C권2호
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    • pp.73-76
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    • 2004
  • 0-3 PbTiO$_3$/P(VDF/TrFE) nanocomposite thin films for passive pyroelectric infrared sensors were fabricated by a two-step spin coating technique. 65wt% VDF and 35 wt% TrFE was formed into a P(VDF/TrFE) powder. Nano size PbTiO$_3$ powder was used. 0-3 connectivity of PbTiO$_3$/P(VDF/TrFE) composite film was successfully achieved and observed using SEM photography. The dielectric constant and pyroelectric coefficient were measured and compared with P(VDF/TrFE). A very low dielectric constant (13.48 at 1KHz and sufficiently high pyroelectric coefficient (3.101 nC/$\textrm{cm}^2$ㆍk at 5$0^{\circ}C$) were measured. This nanocomposite can be used for a new pyroelectric infrared sensor to achieve better performance.

Pyroelectric Characteristics of 0-3 PbTiO3/P(VDF/TrFE) Nanocomposites Thin Films for Infrared Sensing

  • 권성열
    • 한국재료학회지
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    • 제17권4호
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    • pp.236-238
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    • 2007
  • [ 0-3PbTiO_3/P$ ](VDF/TrFE) nanocomposites thin films for passive pyroelectric infrared sensor have been fabricated by two-step spin coating technique. 65 wt% VDF and 35 wt% TrFE was formed to a P(VDF/TrFE) poder Nano size $PbTiO_3$ powder was used. 0-3 connectivity of $PbTiO_3$(VDF/TrFE) composites film is achieved and also observed by SEM photography successfully. The dielectric constant, and pyroelectric coefficient measured and compared with P (VDF/TrFE). A very low dielectric constant (13.48 at 1 kHz) and high enough pyroelectric coefficient (3.101 $nC/cm^2$.k at $50^{circ}C$) neasured. This nanocomposites can be used for a new pyroelectric infrared sensor for better performance.

VHF 대역에 있어서 $PbTiO_{3}$송신/P(VDF-TrFE) 수신 광대역 초음파변환자 (A $PbTiO_{3}$ Transmitting/P(VDF-TrFE) Receiving Wideband Ultrasonic Transducer in VHF Band)

  • Ha, Kang-Lyeol;Kim, Moo-Joon;Kim, Jung-Ho;Kim, Jung-Soon
    • The Journal of the Acoustical Society of Korea
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    • 제23권4E호
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    • pp.120-124
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    • 2004
  • A new type of high frequency wideband ultrasonic transducer with a separation between a transmitter and a receiver was proposed and its characteristics were simulated using a PSpice model. The piezoelectric ceramic $PbTiO_{3}$ as a transmitter and the piezoelectric copolymer P(VDF- TrFE) as a receiver were used for high sensitivity and wide bandwidth, respectively. The characteristics of the focusing transducer with center frequency of approximately 35MHz fabricated in this study showed very wide bandwidth, which could give an axial spatial resolution better than $30{\mu}m$ in B-mode image for biological tissues.

Characteristics of a $PbTiO_{3}$ Transmitting/P(VDF-TrFE) Receiving Ultrasonic Transducer in VHF Band

  • Ha Kang-Lyeol;Kim Moo-Joon;Kim Jung-Ho;Kim Jung-Soon
    • 한국음향학회:학술대회논문집
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    • 한국음향학회 2004년도 춘계학술발표대회 논문집 제23권 1호
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    • pp.311-314
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    • 2004
  • A new type of high frequency wideband ultrasonic transducer with a separation between a transmitter and a receiver was proposed and its characteristics were simulated using the PSpice model. The piezoelectric ceramic $PbTiO_{3}$ as a transmitter and the piezoelectric copolymer P(VDF-TrFE) as a receiver were used for high sensitivity and wide bandwidth, respectively. The characteristics of a center frequency approximately 40MHz focusing transducer fabricated in this study showed very wide bandwidth which could give an axial spatial resolution better than 30um in the B-mode image for biological tissues.

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Fabrication and Characteristics of Pyroelectric Infrared Sensor Using $PbTiO_3$/P(VDF/TrFE) Nanocomposites Thin Film (ICCAS 2004)

  • Kwon, Sung-Yeol;Bae, Jong-Il;Jo, Bong-Kwan;Kim, Do;Ahn, Doo-Sung
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2004년도 ICCAS
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    • pp.2041-2044
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    • 2004
  • A pyroelectric sensor using $PbTiO_3$/P(VDF/TrFE) nanocomposites thin film for sensing materials has been fabricated and evaluated with other commercial pyroelectric sensors that use ceramic materials for sensing. The device was mounted in a TO-5 housing to detect infrared light of 5.5 ~ 14 ${\mu}m$ wavelength. The NEP (noise equivalent power) and specific detectivity D of the device were 1.30 ${\times}$ $10^{-8}$W and 1.53 ${\times}$ $10^7$cm /W respectively under emission energy of 13 ${\mu}$W/c$m^2$ respectively. This result shows a better characteristic than the other commercial pyroelectric infrared sensors.

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