• Title/Summary/Keyword: Nano Device

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A Study of Nano Sensor based on Graphene Resonator (그래핀 공진기 기반의 나노 센서에 대한 연구)

  • Lee, Jun Ha
    • Journal of the Semiconductor & Display Technology
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    • v.16 no.1
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    • pp.102-105
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    • 2017
  • Currently, the size of the electronic device is in the nano area. In order to control the movements of these nanoscale devices, one should be able to understand the physical phenomena in the nano area. Recently, due to carbon nanotubes and mechanical outstanding electrical conductivity and mechanical characteristics of the carbon nanotubes and Graphene behaves to apply. Efforts have been active. There are various tubes with a radius of a in a compact mass in the form of a Multi walled carbon nanotubes in different between the radius. Van der Waals force can move smoothly without friction with each other by the nanoscale motor turning, using the properties, making. This is the lightest solids per unit area on the thickness is electrical atomic layer one of the substance and the electrical conductivity, the best material and mechanical characteristics are very much. Many studies because great is the ideal nanoelectromechanical device of material is being considered. In this study, electrical resonator for a new structure proposed and the nature and methodology would like to come up.

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Effects of nano silver contents on screen printed-etched gate electrodes and electrical characteristics of OTFTs

  • Lee, Mi-Young;Park, Ji-Eun;Song, Chung-Kun
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.917-919
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    • 2009
  • Effects of nano-silver contents(15~50wt%) on screen printed-etched gate electrodes and electrical characteristics of OTFTs were investigated. As Ag contents increased, the screen-printed film was transferred exactly without spreading and obtained the densely-packed layer with a stable and excellent conductivity but, its thickness was increased and surface became rougher. It was found that the leakage current of MIM devices and off-state currents of OTFTs became larger due to poor step coverage of PVP dielectric layer on the thick and rough gate electrodes for nano-Ag inks with Ag contents more than 30wt%.

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Using nano-micro-control technology to improve breathing pressure in vocal music technique teaching innovation

  • Jiayue Cui;Hongliang Zhang
    • Advances in nano research
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    • v.15 no.3
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    • pp.239-251
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    • 2023
  • In the present study, we aim to use nanotechnology sensors/actuators to capture pressure and frequency of voice singers and to send signals for improving breathing pressure. In this regard, a circular composite structure having 3 different layers are used. The core layer is nano-composite material reinforced with graphene nanoplatelets. The face sheets are piezo electric materials connected to electrical circuit capable of measuring and applying voltage to the piezoelectric layers. This sensors have extremely smaller size than conventional sensors attached to the neck of singer and, hence, minimizes the influences on the output voice of the singer. A brief theoretical framework are presented for nonlocal strain gradient theory and geometry of the sensor is described in detail. The controlling procedure along with experimental results on 20 amateur and professional singer participants are also presented. The results of the study indicate that the participants could gain benefit from the device for improving their ability in phonation and keeping their frequency at a constant level although they have difficulty in the beginning of the experiment getting used to the device.

Photo Diode and Pixel Modeling for CMOS Image Sensor SPICE Circuit Analysis (CMOS 이미지센서 SPICE 회로 해석을 위한 포토다이오드 및 픽셀 모델링)

  • Kim, Ji-Man;Jung, Jin-Woo;Kwon, Bo-Min;Park, Ju-Hong;Park, Yong-Su;Lee, Je-Won;Song, Han-Jung
    • 전자공학회논문지 IE
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    • v.46 no.4
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    • pp.8-15
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    • 2009
  • In this paper, we are indicated CMOS Image sensor circuit SPICE analysis for the Photo Diode and pixel Modeling. We get a characteristic of the photoelectric current using a device simulator Medici and develop the Photodiode model for applying a SPICE simulation. For verifying the result, We compared the result of SPICE simulation with the result of mixed mode simulation about the testing circuit structure consisted photodiode and NMOS.

Characterization of the High Luminance Top Emission Organic Light-emitting Devices (TEOLEDs) Using Dual Cathode Layer (이중 음극층을 이용한 고휘도 전면발광(Top emission) 유기EL소자의 특성평가)

  • Kang, Yoon-Ho;Lee, Su-Hwan;Shin, Dong-Won;Kim, Sung-Jun;Kim, Dal-Ho;Lee, Gon-Sub;Park, Jea-Gun
    • Journal of the Semiconductor & Display Technology
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    • v.5 no.3 s.16
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    • pp.23-27
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    • 2006
  • Recently, Top emission organic light-emitting diode (TEOLED) has been attracted by their potential application for the development of flat panel display (FPD). We have fabricated the high luminance top emission organic-emitting diode (TEOLED) using dual cathode layer and three top emitting structure. These devices were characterized by electroluminescence (EL) and current density-voltage (J-V) measurements. After compared it with Au anode structure, luminance of the device using dual anode was better than using without Al device. Consequently, Al layers are very good candidates for a promising electron-injecting buffer layer for top emission light-emitting diode (TEOLED).

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