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카테고리Category

홈 > 학문/산업 분야별 강좌

학문/산업 분야별 강좌

전체강좌 87, 현재 1 / 전체 9페이지
  • LED를 이용한 포터블 형광센서시스템 영상 +강의담기 학문/산업 분야별 강좌 ▶ 반도체_센서기술 ▶

     

    LED 및 실리콘광센서를 이용하여 microfluidics chip을 통한 미세조류 등 의 환경시료를 분석할 수 있는 현장진단형 형광센서시스템의 설계 및 그 활용에 대해 발표하고, 다양한 분야에 대한 응용에 대해 논의하고자 함.

    형광센서 모델은 타겟 분석물을 자극하기 위한 3가지 상이한 파장의 발광다이오드 (LED)를 사용하고, 샘플로부터 낮은 형광 방출을 검출하기 위해 매우 정밀한 SiPM(Silicon Photomultiplier)을 사용함. 그에 대응하는 형광 측정을 위한 정밀한 광 검출기를 사용함. 각 분석물로부터 얻어진 형광 방출 패턴에 기초하여, 다중 분석물의 혼합물에서 하나의 분석물을 검출이 가능함.

    또한 루이지애나주립대에서 진행 중인 다양한 센서 연구에 대해 소개하고자 함

     

    더보기+
    강좌기간 : 2018-11-23 ~ 2018-11-23 | 강좌수 : 1 | 최근업데이트 : 2018-11-23 |조회 : 16
  • Advanced control for efficient power conversion integrated circuits From high-power to RF systems 파일영상 +강의담기 학문/산업 분야별 강좌 ▶ 전력전자/에너지 시스템 ▶ 세미나 및 튜토리얼

    Circuits and architectures for efficient power conversion have become crucial in emerging smart systems. Switching power amplifiers (PA) are very attractive for such applications, because they exhibit better efficiency compared to linear PA designs, due to saturated operation. Switching PAs also allow for utilization of deep submicron CMOS technologies, due to which these designs can be easily integrated with digital circuits, and can benefit from process scaling, in performance as well as in area.

    Pulse-width-modulation (PWM) is commonly used with switching PAs. A PWM signal typically employs a high-frequency switching pulse waveform as a carrier signal, wherein the pulse-width or duty-cycle of each pulse is modulated by a given low-frequency input signal. The carrier frequency can vary from several kHz to GHz, and is typically determined by the target application.

    In this presentation, advanced control for efficient power conversion circuits that use PWM from high-power to RF applications will be presented. I will present a digitally-intensive transmitter using RF-PWM with carrier-switching in the first part of the presentation. Proposed carrier switching concept not only allows the transmitter to drive modulated signals with large peak-to-average power ratio (PAPR), but also improves the back-off efficiency. The second part of the presentation, I will present a high-speed PWM driver with multi-level class-D PA. Employing a PLL-based PWM architecture enables high switching frequency operation with high linearity and a multi-level output stage provides high efficiency, at high switching frequency by reducing the switching levels. The final part of the presentation, I will present an efficient buck/buck-boost reconfigurable LED driver that supports PWM and pulse-frequency-modulation (PFM) operation. Power factor (PF) and total harmonic distortion (THD) are improved by employing proposed adequate reference control.

     

     

    강좌기간 : 2018-11-21 ~ 2018-11-21 | 강좌수 : 1 | 최근업데이트 : 2018-11-21 |조회 : 9
  • Efficient Memory Architecture Design for Emerging Technologies 영상 +강의담기 학문/산업 분야별 강좌 ▶ IT 융합 ▶

    We are facing the end of Moore's law and Dennard scaling. Since transistor scaling is slowing down, the continued demand for power and performance efficient systems forces computer architects to re-think traditional computer architectures and search for alternative ways to realize better performance. In this trend, the computer architecture community pays attention to emerging technologies such as die-stacked DRAM, non-volatile memory, and heterogeneous architecture systems (HAS). However, since modern systems have been optimized for conventional CPUs and memories for decades, systems now need new designs in order to maximize their benefits from these new technologies. My research investigated the impact of these new challenges on modern systems and redesigned architectures to reduce the overheads. In my talk, I will introduce a new die-stacked DRAM cache design which solves the problem of the wasted capacity in the previous DRAM cache design. Additionally, I will introduce our speculative execution scheme for the persistency overhead, where we speculate past long latency persistency operations using checkpoint-based processing. Finally, I will discuss our approach to reduce the overhead of GPU address translation requests using neighborhood-aware coalescing.

     

     

    강좌기간 : 2018-11-07 ~ 2018-11-07 | 강좌수 : 1 | 최근업데이트 : 2018-11-07 |조회 : 16
  • Modelling of Bionic Manipulators 영상 +강의담기 학문/산업 분야별 강좌 ▶ IT 융합 ▶ 세미나 및 튜토리얼

    The Biomimetic science consists in understanding some natural behaviours and to reproduce their functioning. The main issue of the bionic research is to find the most adapted technology imitating a nature behaviour. Among the different kind of bionic robots, a class of the continuum robots characterized by a constant curvature are often used to describe a biological elephant trunk. Determination of forward and inverse kinematics of such robots is always difficult, since these robots are characterize by infinite degrees of freedom. An accurate dynamic model of these class of robots can help in developing satisfactory model based control scheme. The talk will discuss forward and inverse kinematics of bionic manipulators.

     

     

    강좌기간 : 2018-11-01 ~ 2018-11-01 | 강좌수 : 1 | 최근업데이트 : 2018-11-02 |조회 : 2
  • Beyond the acoustic diffraction limit: Super-resolution Ultrasound Imaging 영상 +강의담기 학문/산업 분야별 강좌 ▶ IT 융합 ▶ 세미나 및 튜토리얼

    The recently introduced super-resolution imaging technique based on microbubble center localization has shown potential to achieve unprecedented high spatial resolution beyond the acoustic diffraction limit. However, a major drawback of the current super-resolution imaging approach is low temporal resolution because it requires a large number of imaging frames. In this talk, a new imaging sequence and signal processing approach for super-resolution ultrasound imaging are presented to improve temporal resolution by employing deconvolution and spatio-temporal-interframe-correlation based data acquisition and motion compensation. The proposed method not only identifies a tiny vessel with a diameter of 41 μm, 5 times higher spatial resolution than the acoustic diffraction limit at 7.7 MHz, but also significantly improves temporal resolution that allows for imaging vessels over cardiac motion.

     

    강좌기간 : 2018-10-31 ~ 2018-11-01 | 강좌수 : 2 | 최근업데이트 : 2018-11-02 |조회 : 17
  • Research Environments in France and Heterogeneous Integration with Energy Harvesting Techniques for Wireless Sensor Network 영상 +강의담기 학문/산업 분야별 강좌 ▶ 반도체_센서기술 ▶ 세미나 및 튜토리얼

     

    This seminar will first introduce the research environments of France focusing on French governmental research organizations such as CNRS, INSERM, CEA, INRA etc. The system of CNRS, the largest research institute of France, will be explained with its history and highlights. Research topic of CNRS researchers is important to begin their career and thus an example will be shortly introduced. Secondly, research activities on heterogeneous integration for wireless sensor network will be summarized. Powering sensor nodes based on external vibration is interesting to make them energically autonomous. As a method of energy harvesting, extraction of electrical energy using a vibrating piezoelectric device is being attractive. Other energy harvesting devices will be also presented.

     

    더보기+
    강좌기간 : 2018-10-25 ~ 2018-10-25 | 강좌수 : 1 | 최근업데이트 : 2018-10-26 |조회 : 15
  • CMOS integrated circuits and system for affordable terahertz electronics 영상 +강의담기 학문/산업 분야별 강좌 ▶ 첨단센서인력양성 ▶ 세미나 및 튜토리얼

    Sub-terahertz and terahertz waves, electromagnetic waves within the frequency range from 100GHz to 10THz, enable unprecedented capabilities thanks to their unique characteristics, such as short wavelength, wide bandwidth and spectral specificity. 

    더보기+
    강좌기간 : 2018-07-13 ~ 2018-07-13 | 강좌수 : 1 | 최근업데이트 : 2018-09-20 |조회 : 14
  • MEMS-Based Bio Devices, Liquid Metal Electronics and Nanophotonics 영상 +강의담기 학문/산업 분야별 강좌 ▶ 첨단센서인력양성 ▶ 세미나 및 튜토리얼

     

    더보기+
    강좌기간 : 2018-06-29 ~ 2018-06-29 | 강좌수 : 1 | 최근업데이트 : 2018-09-20 |조회 : 8
  • Vertical silicon nanowires for image sensor applications 영상 +강의담기 학문/산업 분야별 강좌 ▶ 첨단센서인력양성 ▶ 세미나 및 튜토리얼

    Conventional image sensors achieve color imaging using absorptive organic dye filters. 

    더보기+
    강좌기간 : 2018-04-30 ~ 2018-04-30 | 강좌수 : 1 | 최근업데이트 : 2018-09-20 |조회 : 6
  • High performance InAs quantum dot lasers epitaxially grown on on-axis (001) Si for silicon photonics 영상 +강의담기 학문/산업 분야별 강좌 ▶ 첨단센서인력양성 ▶ 세미나 및 튜토리얼

    Quantum dot lasers epitaxially grown on Si are promising for an efficient light source for
    silicon photonics.
     

    더보기+
    강좌기간 : 2018-01-03 ~ 2018-01-03 | 강좌수 : 1 | 최근업데이트 : 2018-09-20 |조회 : 10
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