• Title/Summary/Keyword: probe design

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A Probe Design Method for DNA Microarrays Using ${\epsilon}$-Multiobjetive Evolutionary Algorithms (${\epsilon}$-다중목적 진화연산을 이용한 DNA Microarray Probe 설계)

  • Cho Young-Min;Shin Soo-Yong;Lee In-Hee;Zhang Byoung-Tak
    • Proceedings of the Korean Information Science Society Conference
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    • 2006.06a
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    • pp.82-84
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    • 2006
  • 최근의 생물학적인 연구에 DNA microarray가 널리 쓰이고 있기 때문에, 이러한 DNA microarray를 구성하는데 필요한 probe design 작업의 중요성이 점차 커져가고 있다. 이 논문에서는 probe design 문제를 thermodynamic fitness function이 2개인 multi-objective optimization 작업으로 변환한 뒤, ${\epsilon}$-multiobjective evolutionary algorithm을 이용하여 probe set을 찾는다. 또한, probe 탐색공간의 크기를 줄이기 위하여 각 DNA sequence의 primer 영역을 찾는 작업을 진행하며, 사용자가 직접 프로그램을 테스트할 수 있는 웹사이트를 제공한다. 실험 대상으로는 mycoides를 선택하였으며, 이 논문에서 제안된 방법을 사용하여 성공적으로 probe set을 발견할 수 있었다.

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Design and Fabrication of Dual Tip Si3N4 Probe for Dip-pen Nanolithograpy (Dip-pen nanolithography를 위한 이중 팁을 가진 질화규소 프로브의 설계 및 제조)

  • Kim, Kyung Ho;Han, Yoonsoo
    • Journal of the Korean institute of surface engineering
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    • v.47 no.6
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    • pp.362-367
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    • 2014
  • We report the design, fabrication of a $Si_3N_4$ probe and calculation of its mechanical properties for DPN(dip pen nanolithography), which consists of dual tips. Concept of dual tip probe is to employ individual tips on probe as either an AFM tip for imaging or a writing tip for nano patterning. For this, the dual tip probe is fabricated using low residual stress $Si_3N_4$ material with LPCVD deposition and MEMS fabrication process. On the basis of FEM analysis we show that the functionality of dual tip probe for imaging is dependent on the dimensions of dual tip probe, and high ratio of widths of beam areas is preferred to minimize curvature variation on probe.

Optimal design of slider for stable flying characteristic using 4${\times}$l near-field probe array

  • Jung Min-su;Hong Eo-Jin;Park Kyoung-Su;Park No-Cheol;Yang Hyun-Seok;Park Young-Pil;Lee Sung-Q;Park Kang-Ho
    • 정보저장시스템학회:학술대회논문집
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    • 2005.10a
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    • pp.171-176
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    • 2005
  • In the information storage development, the trend of the storage device is to increase the recording density. Among such an effort, near-field probe recording is spotlighted as a method of high increasing recording density. For the successfully embodiment of storage device, the actuating mechanism of near-field probe is essentially designed. In this paper, we suggest the slider similar with conventional HDDs and design the slider using near- field probe for the purpose of applying the slider in order to control gap between probe and media. The most important object of slider design is to guarantee the flying ability and stability. For achievement of these design objects, we perform two step of optimal design process. The media is mod! eled as random displacement, which is only considered roughness of disk surface. The design slider is analyzed with dynamic state in assumed media. At this process, the optimal model is confirmed to stable flying stability.

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Optimal Design of Slider for Stable Flying Characteristics using $4{\times}1$ Near-field Probe Array

  • Jung, Min-Su;Hong, Eo-Jin;Park, Kyoung-Su;Park, No-Cheol;Yang, Hyun-Seok;Park, Young-Pil;Lee, Sung-Q;Park, Kang-Ho
    • Transactions of the Society of Information Storage Systems
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    • v.2 no.1
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    • pp.65-70
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    • 2006
  • In the information storage development, the trend of the storage device is to increase the recording density. Among such an effort, near-field probe recording is spotlighted as a method of high increasing recording density. For the successfully embodiment of storage device, the actuating mechanism of near-field probe is essentially designed. In this paper, we suggest the slider similar with conventional HDD and design the slider using near-field probe for the purpose of applying the slider in order to control gap between probe and media. The most important object of slider design is to guarantee the flying ability and stability. For achievement of these design objects, we perform two step of optimal design process. The media is supposed to model as random displacement, which is only considered roughness of disk surface. The design slider is analyzed with dynamic state in assumed media. At this process, the optimal model is confirmed to stable flying stability.

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Design, analyses, and evaluation of a spiral TDR sensor with high spatial resolution

  • Gao, Quan;Wu, Guangxi;Yu, Xiong
    • Smart Structures and Systems
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    • v.16 no.4
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    • pp.683-699
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    • 2015
  • Time Domain Reflectometry (TDR) has been extensively applied for various laboratory and field studies. Numerous different TDR probes are currently available for measuring soil moisture content and detecting interfaces (i.e., due to landslides or structural failure). This paper describes the development of an innovative spiral-shaped TDR probe that features much higher sensitivity and resolution in detecting interfaces than existing ones. Finite element method (FEM) simulations were conducted to assist the optimization of sensor design. The influence of factors such as wire interval spacing and wire diameter on the sensitivity of the spiral TDR probe were analyzed. A spiral TDR probe was fabricated based on the results of computer-assisted design. A laboratory experimental program was implemented to evaluate its performance. The results show that the spiral TDR sensor featured excellent performance in accurately detecting thin water level variations with high resolution, to the thickness as small as 0.06 cm. Compared with conventional straight TDR probe, the spiral TDR probe has 8 times the resolution in detecting the water level changes. It also achieved 3 times the sensitivity of straight TDR probe.

Design and Experimental Studies of Radial-Outflow Type Diagonal Flow Fan

  • Kinoue, Yoichi;Shiomi, Norimasa;Setoguchi, Toshiaki
    • International Journal of Fluid Machinery and Systems
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    • v.6 no.1
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    • pp.18-24
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    • 2013
  • In order to apply the design method of diagonal flow fan based on axial flow design to the design of radial-outflow type diagonal flow fan which has lower specific speed of 600-700 [$min^{-1}$, $m^3/min$, m], radial-outflow type diagonal flow fan which specific speed was 670 [$min^{-1}$, $m^3/min$, m] was designed by a quasi three-dimensional design method. Experimental investigations were conducted by fan characteristics test, flow surveys by a five-hole probe and a hot wire probe. Fan characteristics test agreed well with the design values. In the flow survey at rotor outlet, the characteristic region was observed. Two flow phenomena are considered as the cause of the characteristic region, one is tip leakage vortex near rotor tip and another is pressure surface separation on the rotor blade.

Characteristic Analysis and Design of PC Probe for Eddy Current Testing (와전류탐상을 위한 PC 프로브의 특성해석 및 설계)

  • Kim Yong Taek;Lee Hyang-beom
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.965-967
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    • 2004
  • In this paper, characteristic analysis of PC(Pancake Coil) probe with the size variation is presented for eddy current testing. Characteristics of probe are numerically calculated by using the finite element method. From the numerical analysis, the optimum frequency and groups for an experiment are selected. Probes are made and experiment is performed. From the experimental results, the probe shows maximum sensitivity when the size of defect is equal to the size of probe and when the inside diameter is similar to the width of probe and when the height is low. The result can be helpful to the standard of design of PC probe for eddy current testing.

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Atom Probe Tomography: A Characterization Method for Three-dimensional Elemental Mapping at the Atomic Scale

  • Choi, Pyuck-Pa;Povstugar, Ivan
    • Journal of Powder Materials
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    • v.19 no.1
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    • pp.67-71
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    • 2012
  • The present paper gives an overview about the Atom Probe Tomography technique and its application to powder materials. The preparation of needle-shaped Atom Probe specimens from a single powder particle using focused-ion-beam milling is described. Selected experimental data on mechanically alloyed (and sintered) powder materials are presented, giving insight into the atomic-scale elemental redistribution occurring under powder metallurgical processing.

Probe Design and Fabrication for Measuring Near Field (근역장 측정용 프로브의 설계 및 제작)

  • 김병찬;최형도;이애경;이형수
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.13 no.2
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    • pp.164-169
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    • 2002
  • This paper reports on design and fabrication of near field probe operating at 300~3000 MHz. Design parameters are extracted by equivalent circuit of E-field probe and simulation using S parameter is performed to predict probes performance. The probe consists of a dipole antenna with 3.25 mm length, a zero bias Schottky diode and a highly resistive transmission line. A TEM cell was used for performance evaluation.

A Study on the System Design for Deep-Space Probe Reference Model (표준 심우주 탐사선 시스템 설계 연구)

  • Euikeun Kim;Hyeon-Jin Jeon
    • Journal of Space Technology and Applications
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    • v.3 no.1
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    • pp.44-57
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    • 2023
  • In order for a latecomer in deep-space exploration such as Korea to quickly keep pace with advanced deep-space exploration countries in the mutually-beneficial space exploration market, it is essential to derive a deep-space probe reference model that can reduce development period and cost. In this paper, concept and configuration for the deep-space probe reference model consisting of basic, lightweight, and expansion types are newly presented, which are based on commonly required designs for various deep-space probes. The proposed configuration adopts modular design so that the expandability and design/implementation efficiency are improved. In addition, the electrical system design pursuing lightweight and expandability is also described, which is applicable to the proposed three-types of deep-space probe reference model.