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作者： Morimoto, Y. Takamura, T. Ishikawa, R. Ko, P.J. Sandhu, A. Department of Electrical and Electronic Engineering Tokyo Institute of Technology Tokyo 152-0033 Japan Department of Electrical and Electronic Engineering Tokyo Institute of Technology Japan Society for the Promotion of Science Tokyo 152-0033 Japan Evolving Education and Research Center for Spatio-Temporal Biological Network Tokyo Tech Global COE Program Tokyo 226-8501 Japan Electronics-Inspired Interdisciplinary Research Institute Toyohashi University of Technology 1-1Hibarigaoka Tempaku-cho Toyohashi Aichi 441-8580 Japan

Detection of small concentrations of sub-200-nm-sized SPBs (superparamagnetic beads with sizes similar to target molecules) used as magnetic labels' is critical for the development of rapid, highly sensitive, and portable point of care treatment (POCT) systems. Currently, magnetoresistive (MR) biosensors are used for the detection of large concentrations of SPBs but such an approach is not suitable for monitoring small numbers of sub-200-nm SPBs due to the intrinsic noise of these electronic devices. In order to overcome this limitation of conventional MR sensors, we have developed a simple procedure for detecting small concentrations of sub-200-nm-diameter SPBs for biosensing by exploiting magnetically induced self-assembly of micrometer-sized SPBs onto nanometer targets. Here, our approach enables the physical amplification of the signal from otherwise undetectable nano-SPB targets using Hall biosensors without using the application of ac, magnetic fields or lock-in detection, thereby enabling the production of a simple POCT protocol for a wide range of applications. © 2011 American Institute of Physics.

关键词： Biosensors

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An electronically controlled current-mode triangular/square wave generator employing MO-CCCCTAs

An electronically controlled current-mode triangular/square ...

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International Conference on Electrical engineering/electronics, Computer, Telecommunications and Information technology

作者： Srisakul, T. Silapan, P. Siripruchyanun, M. Department of Electronics Phitsanulok Technical College Muang Phitsanulok 65000 Thailand Electrical and Industrial Program Faculty of Industrial Uttaradit Rajabhat University Muang Uttaradit 53000 Thailand Department of Teacher Training in Electrical Engineering Faculty of Technical Education King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand

ISBN: (纸本)9781457704246

A new current-mode triangular/square wave generator based on MO-CCCCTAs (Multiple output current controlled current conveyor transconductance amplifiers) is presented in this paper. The circuit description is very simple, its construction consists of 2 MO-CCCCTAs and 1 grounded capacitor without any external resistor. The output frequency and amplitude can be electronically/independently tuned via corresponding input bias currents. With mentioned features, it is very suitable to realize in a monolithic chip. The PSpice simulation results are depicted, and agree well with the theoretical anticipation. The maximum power consumption is approximately 1.62mW at ±1.5V power supply. © 2011 IEEE.

关键词： Square wave generators

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An implementation of a 2D FIR filter using the signed-digit number system

An implementation of a 2D FIR filter using the signed-digit ...

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electronics, Communications and Photonics Conference (SIECPC), Saudi International

作者： Yasser Mohammad Seddiq Hesham Altwaijry Department of Computer Engineering King Saud University Saudi Arabia National Program of Electronics Communications and Photonics King Abdulaziz City for Science and Technology Saudi Arabia

An FIR filter is implemented in this work. Enhancing the arithmetic operations of the filter is considered. For the addition operation, the signed-digit number system is utilized. For the multiplication operation, Booth-3 algorithm is used to reduce the number of partial products. Then a 1D filter is used to construct a 2D filter that is deployed on real hardware in an image processing application.

关键词： Finite impulse response filter Filtering algorithms Delay Field programmable gate arrays Digital signal processing Adders

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Optical Transmittance for Analysis of the Dynamics of Self-Assembled Rotating Chains of Superparamagnetic Micro- and Nano Beads in Solution

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Journal of Physics: Conference Series 2012年第1期352卷

作者： Pil Ju Ko Tsukasa Takamura Adarsh Sandhu Department of Electrical and Electronic Engineering Tokyo Institute of Technology 2-12-1 O-okayama Meguro-ku Tokyo 152-8552 Japan Tokyo Tech Global COE Program on Evolving Education and Research Center for Spatio-Temporal Biological Network Tokyo 152-8552 Japan Electronics-Inspired Interdisciplinary Research Institute (EIIRIS) Toyohashi University of Technology Hibarigaoka Tempaku-cho Toyohashi 441-8580 Japan

Optically monitoring biosensing procedures based on the dynamics of an aqueous solution containing functionalized superparamagnetic beads in the application of the external rotating magnetic field has been developed for a rapid, highly sensitive, and inexpensive bioassay. Typically, the dynamics of micrometer diameter beads is observed by conventional optical microscopes. For greater affinity to biomolecules, there is a demand which necessitates the use of nanometer sized superparamagnetic beads, comparable size to actual biomolecules. However, a limited amount of work for monitoring the dynamics of nanometer sized beads has been performed thus far due to the maximum resolution of microscopes. Here, we propose a novel protocol enabling us monitor the dynamics of nanometer-diameter beads via change in the optical transmittance.

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LTCC system-on-package (SoP) module of an 60-GHz Amplitude Shift-Keying (ASK) transceiver

LTCC system-on-package (SoP) module of an 60-GHz Amplitude S...

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Asia-Pacific Conference on Microwave

作者： Young Chul Lee Young-Bae Jung Azzemi Ariffin Division of Marine Electronics and Communication Engineering Mokpo National Maritime University Mokpo Jeonnam South Korea Electronics Engineering Hanbat National Uiversity Daejeon South Korea System Technology Program TMR&D Innovation Centre Telekom Research and Development Sdn. Bhd. Cyberjaya Selangor Darul Ehsan Malaysia

In this paper, a Amplitude Shift-Keying (ASK) transceiver low-temperature co-fired ceramic (LTCC) system-on-package (SoP) compact module is presented for 60 GHz wireless communication applications. The transceiver (TRx) module has been designed and implemented in the six-layer LTCC dielectric. The eight GaAs RF integrated circuit (IC) chips for a transmitter (Tx) and receiver (Rx), one LPF for a detector, a high-isolation via fence, and DC bias components are fully integrated into the single LTCC multi-layer dielectric substrate of the size of 17.8 × 17.9 × 0.6 mm 3 . The Tx part shows an output power of 12.8 dBm at 62.24 GHz. The IF flatness of below -2dBm, conversion gain of 38 dB and recovered eye diagram of the 1.25Gbps pattern are obtained in the Rx part.

关键词： Amplitude shift keying Wireless communication Transceivers Microwave integrated circuits Substrates Radio transmitters

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Microfluidic flow cytometer utilizing optical space-time coding technique

Microfluidic flow cytometer utilizing optical space-time cod...

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IEEE Photonics Conference (IPC)

作者： Tsung-Feng Wu Zhe Mei Luca Pion-Tonachini Yu-Hwa Lo Materials Science and Engineering Program University of California at San Diego La Jolla CA USA School of Information and Electronics Beijing Institute of Technology Beijing China Department of Electrical and Computer Engineering University of California at San Diego La Jolla CA USA

An optical-coding technique for microfluidic flow cytometers to detect forward scattering and large angle scattering signals that can be used to differentiate beads and cells.

关键词： Optical scattering Microfluidics Optical sensors Optical signal processing Optical device fabrication Biomedical optical imaging

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PDMS through-hole fabrication by soft lithography using CH4/He atmospheric RF plasma surface treatment

PDMS through-hole fabrication by soft lithography using CH4/...

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IEEE International Conference on Micro Electro Mechanical Systems

作者： Jongchan Choi Kyeong-Hwan Lee Ji A Choi Sun Hwa Lee Sung Yang School of Information and Mechatronics Gwangju Institute of Science and Technology Gwangju South Korea Department of Rural and Biosystems Engineering Chonnam National University Gwangju South Korea Institute of Medical System Engineering Gwangju Institute of Science and Technology Gwangju South Korea Department of Nanobio Materials and Electronics School of Information and Mechatronics Graduate Program of Medical System Engineering Gwangju Institute of Science and Technology Gwangju South Korea

This paper presents a PDMS micro through-hole molding method by simple soft lithography process in which the surface of a master mold and a substrate is treated by atmospheric CH 4 /He RF plasma to feature hydrophobic property on the surface. Rectangular and circular-shaped PDMS micro through-hole layers are made by the proposed fabrication method. As one of the applications of the PDMS micro through-hole layer for multi-layered systems, a radial concentration gradient generator including a micro through-hole layer is constructed and its performance is tested. The micro through-holes fabricated by the proposed method are well-defined. The concentration gradients measured in radial directions are in a similar level. Also, the tearing problem, which is often happened in spin-coating and lift-off molding methods, is not observed during the fabrication process of the PDMS micro through-holes. Therefore, we believe that the proposed fabrication method contributes to improve the technology for PDMS through-hole fabrication.

关键词： Surface treatment Fabrication Plasmas Substrates Helium Generators Radio frequency

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A parallel architecture for ray-tracing with an embedded intersection algorithm

A parallel architecture for ray-tracing with an embedded int...

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IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Alexandre S. Nery Nadia Nedjah Felipe M.G. França Lech Jozwiak LAM-Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering-Electronic Systems Eindhovan University of Technology Netherlands Department of Electronics Engineering and Telecommunications-Faculty of Engineering Universidade do Estado do Rio de Janeiro (UERJ) Brazil

Real time rendering of three-dimensional scenes in Ray Tracing is a hard problem. However, parallel implementations have been enabling real time performance, as the algorithm can be highly parallelized. Thus, a custom parallel design in hardware is likely to achieve a good performance. In this paper, we further improve the GridRT architecture overall performance by embedding the ray-triangle intersection computation into the precessing elements that form the architecture. Low cost and high rendering performance are the main concerns in this novel design. The results show that the execution time of each intersection computation is reduced by at least 50%, while the area cost is practically unchanged or even reduced when compared to the original GridRT implementation.

关键词： Ray tracing Registers Equations USA Councils Mathematical model Parallel architectures

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Hardware Reuse in Modern Application-Specific Processors and Accelerators

Hardware Reuse in Modern Application-Specific Processors and...

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Euromicro Symposium on Digital System Design

作者： Alexandre S. Nery Lech Jozwiak Menno Lindwer Mauro Cocco Nadia Nedjah Felipe M.G. Franca LAM-Computer Architecture and Microelectronics Laboratory Systems Engineering and Computer Science Program COPPE Universidade Federal do Rio de Janeiro Brazil Department of Electrical Engineering-Electronic Systems Eindhoven University of Technology Netherlands Silicon Hive-Intel UMG Netherlands Department of Electronics Engineering and Telecommunications-Faculty of Engineering Universidade do Estado do Rio de Janeiro Brazil

Effective exploitation of the application-specific parallel patterns and computation operations through their direct implementation in hardware is the base for construction of high-quality application-specific (re-)configurable application specific instruction set processors (ASIPs) and hardware accelerators for modern highly-demanding applications. Although it receives a lot of attention from the researchers and practitioners, a very important problem of hardware reuse in ASIP and accelerator synthesis is clearly underestimated and does not get enough attention in the published research. This paper is an effect of an industry and academic collaborative research. It analyses the problem of hardware sharing, shows its high practical relevance, as well as a big influence of hardware sharing on the major circuit and system parameters, and its importance for the multi-objective optimization and tradeoff exploitation. It also demonstrates that the state-of-the-art synthesis tools do not sufficiently address this problem and gives several guidelines related to enhancement of the hardware reuse.

关键词： Hardware Resource management Computer architecture Optimization program processors Adders Delay

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An electronically controlled current-mode triangular/square wave generator employing MO-CCCCTAs

An electronically controlled current-mode triangular/square ...

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International Conference on Electrical engineering/electronics, Computer, Telecommunications and Information technology, ECTI-CON

作者： T. Srisakul P. Silapan M. Siripruchyanun Department of Electronics Phitsanulok Technical College Phitsanulok Thailand Electrical and Industrial Program Faculty of Industrial Uttaradit Rajabhat University Uttaradit Thailand Department of Teacher Training in Electrical Engineering Faculty of Technical Education King Mongkut''s University of Technology North Bangkok Bangkok Thailand

关键词： Topology Equations Computers Mathematical model SPICE

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