• Title/Summary/Keyword: MULTILAYER

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Ordered Hybrid Nanomaterials from Self-Assembled Polymeric Building Blocks

  • Kim, Dong-Ha
    • Proceedings of the Polymer Society of Korea Conference
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    • 2006.10a
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    • pp.309-309
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    • 2006
  • Latest developments on hybrid nanostructured materials fabricated by applying self-assembly strategies on organic/inorganic nanotemplates are discussed. Within this frame, numerous functional nanomaterials including arrays of composite metal/semiconductor nanoparticles, planar waveguides and functional multilayer thin films are generated using self-assembled polymers as templates or building blocks. In particular, surface plasmon resonance based optical sensing is employed to investigate nanofabrication processes occurring in nanoscale dimention. We also suggest unprecedented pathways to hybrid supramolecular multilayer nanoarchitectures in 1D or 2D geometry via layer-by-layer self-assembly.

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Nonlinear system control by use of neural networks

  • Zhang, Ping;Sankai, Yoshiyuki;Ohta, Michio
    • 제어로봇시스템학회:학술대회논문집
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    • 1994.10a
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    • pp.411-415
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    • 1994
  • An adaptive learning control scheme by use of multilayer neural networks for compensating for uncertainties in nonlinear dynamic system is examined. Multilayer neural networks are introduced to map the uncertainties in nonlinear dynamics and perform nonlinear state feedback. Parameters of neural networks are adjusted by conventional back-propagation algorithms modified with the projection operation. Effectiveness of the proposed scheme for tracking control are demonstrated through computer simulations.

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Pulse Propagation Characteristics of Multilayer-Multiconcuctor Transmission Line Network (다층 다도체 선로로 구성된 회로의 펄스전송 특성)

  • 장행종;임영석
    • Journal of the Korean Institute of Telematics and Electronics A
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    • v.31A no.10
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    • pp.39-47
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    • 1994
  • In this paper, by modeling the Multilayer-Multiconductor Transmission Line(MMTL) with the characteristic parameters-effective dielectric constant, eigen modal voltages, characteristic impedances at each mode, pulse propagation characteristics of MMTL network are simulated. Transmission line modelling is performed in frequency domain, then time domain resposes are obtained by transforming the frequency domain response using fast Fourier transform.

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Micromagnetic Simulations for Spin Transfer Torque in Magnetic Multilayers

  • You, Chun-Yeol
    • Journal of Magnetics
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    • v.17 no.2
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    • pp.73-77
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    • 2012
  • We investigate spin transfer torque (STT) in magnetic multilayer structures using micromagnetic simulations. We implement the STT contribution for magnetic multilayer structures in addition to the Landau-Lifshitz-Gilbert (LLG) micromagnetic simulators. In addition to the Sloncewski STT term, the zero, first, and second order field-like terms are also considered as well as the effects of the Oersted field due to the running current are addressed. We determine the switching current densities of the free layer with the exchange biased synthetic ferrimagnetic reference layers for various cases.

On Designing a Robot Manipulator Control System Using Multilayer Neural Network and Immune Algorithm (다층 신경망과 면역 알고리즘을 이용한 로봇 매니퓰레이터 제어 시스템 설계)

  • 서재용;김성현;전홍태
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 1997.10a
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    • pp.267-270
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    • 1997
  • As an approach to develope a control system with robustness in changing control environment conditions, this paper will propose a robot manipulator control system using multilayer neural network and immune algorithm. The proposed immune algorithm which has the characteristics of immune system such as distributed and anomaly detection, probabilistic detection, learning and memory, consists of the innate immune algorithm and the adaptive immune algorithm. We will demonstrate the effectiveness of the proposed control system with simulations of a 2-link robot manipulator.

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Analysis of Optoelectronic Neural Networks with Persistent Photoconductors Array (잔류 광전도체 어레이를 이용한 광전신경망의 학습성능분석)

  • 김종문
    • Proceedings of the Optical Society of Korea Conference
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    • 1991.06a
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    • pp.29-34
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    • 1991
  • An optoelectronic implementation of analog and non-volatile synaptic weights of neural networks is proposed by using the doping modulated amophous silicon multilayer. The persistent photoconductivity(PPC) of the multilayer induced by a short illumination is characterized in experiment and implemented to the non-volatile synaptic weights. An optoelectronic processor with the single layer perceptron algorithm is also proposed. Some learning equations of the processor and the results of simulation are presented.

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The Electrical Conductivity and Electrochemical Characteristics of Amphiphilic Milecules Multilayer Film confined with Hetero Type (양친매성 다중층막의 전기적 도전성 및 전기적 특성)

  • 최인희;박수길;임기조;이주성
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 1996.05a
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    • pp.269-272
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    • 1996
  • The electrochemical behavior of Ru complex and PD complex monolayer, deposited on conductive substrate by the Langmuir-Blodgett(LB) technique as monolayer and multilayer, has been studied by cyclic voltammetry. Monolayer films show stable reversible state. Atomic resolution imaging of LB highly-conductive, environmently stable organic films has been obtained by atomic force microscopy (AFM) showing their closely packed structure,

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Equivalent Circuit Design of 2.4GHz Band LTCC Bandpass Filter (2.4GHz 대역 LTCC 대역통과 여파기의 등가회로 설계)

  • 성규제;양승환;김동연;유재하;여동훈
    • Proceedings of the IEEK Conference
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    • 2003.11c
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    • pp.313-316
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    • 2003
  • The LTCC bandpass filter using multilayer resonators is made of combline type and interdigital type parallel coupled-lines. The equivalent circuits of parallel coupled-lines are analysed. They are applied to make an equivalent circuit of LTCC bandpass filter using multilayer resonators. The 3-pole bandpass filter of the center frequency of 2.45GHz with 200Hz bandwidth is designed and fabricated. The simulated result of the bandpass filter are presented.

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High efficiency organic light emitting-diodes (OLEDs) using multilayer transparent electrodes

  • Yun, Chang-Hun;Cho, Hyun-Su;Yoo, Seung-Hyup
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.823-825
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    • 2009
  • We present multilayer transparent electrodes (MTEs) that resulted in organic light-emitting diodes (OLEDs) with the 90 % higher forward luminous efficiency and 30% higher external quantum efficiency (EQE) than conventional ITO based devices respectively. Optimization method of such MTE structure is investigated in consideration of both injection and optical structure.

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