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Hydrogels: Glacier Moraine Formation‐Mimicking Colloidal Particle Assembly in Microchanneled, Bioactive Hydrogel for Guided Vascular Network Construction (Adv. Healthcare Mater. 2/2015)

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Advanced Healthcare Materials 2015年第2期4卷

作者： Min Kyung Lee Max H. Rich Artem Shkumatov Jae Hyun Jeong Marni D. Boppart Rashid Bashir Martha U. Gillette Jonghwi Lee Hyunjoon Kong Department of Chemical and Biomolecular Engineering Institute of Genomic Biology University of Illinois at Urbana‐Champaign Urbana IL 61801 USA Department of Pathobiology University at Illinois at Urbana‐Champaign Urbana IL 61801 USA Department of Chemical Engineering Soongsil University Seoul 156–743 Korea Department of Kinesiology and Community Health University of Illinois at Urbana‐Champaign IL 61801 USA Beckman Institute for Advanced Science and Technology University of Illinois at Urbana‐Champaign IL 61801 USA Department of Electrical and Computer Engineering & Bioengineering University of Illinois at Urbana‐Champaign IL 61801 USA Neuroscience Program Department of Cell and Developmental Biology University of Illinois at Urbana‐Champaign IL 61801 USA Department of Chemical Engineering and Materials Science Chung‐Ang University Seoul 156–756 Korea

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Shape-dependent dispersion and alignment of nonaggregating plasmonic gold nanoparticles in lyotropic and thermotropic liquid crystals

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Physical Review E 2014年第5期89卷 052505-052505页

作者： Qingkun Liu Jianwei Tang Yuan Zhang Angel Martinez Shaowei Wang Sailing He Timothy J. White Ivan I. Smalyukh Department of Physics and Materials Science and Engineering Program University of Colorado at Boulder Boulder Colorado 80309 USA Centre for Optical and Electromagnetic Research Zhejiang University Hangzhou 310058 People's Republic of China Air Force Research Laboratory Materials and Manufacturing Directorate WPAFB OH USA Department of Electrical Computer and Energy Engineering and Liquid Crystals Materials Research Center University of Colorado at Boulder Boulder Colorado 80309 USA Renewable and Sustainable Energy Institute National Renewable Energy Laboratory and University of Colorado Boulder Colorado 80309 USA

We use both lyotropic liquid crystals composed of prolate micelles and thermotropic liquid crystals made of rod-like molecules to uniformly disperse and unidirectionally align relatively large gold nanorods and other complex-shaped nanoparticles at high concentrations. We show that some of these ensuing self-assembled orientationally ordered soft matter systems exhibit polarization-dependent plasmonic properties with strongly pronounced molar extinction exceeding that previously achieved in self-assembled composites. The long-range unidirectional alignment of gold nanorods is mediated mainly by anisotropic surface anchoring interactions at the surfaces of gold nanoparticles. Polarization-sensitive absorption, scattering, and extinction are used to characterize orientations of nanorods and other nanoparticles. The experimentally measured unique optical properties of these composites, which stem from the collective plasmonic effect of the gold nanorods with long-range order in a liquid crystal matrix, are reproduced in computer simulations. A simple phenomenological model based on anisotropic surface interaction explains the alignment of gold nanorods dispersed in liquid crystals and the physical underpinnings behind our observations.

关键词： LYOTROPIC liquid crystals PLASMONS (Physics) GOLD nanoparticles MICELLES NANORODS COMPOSITE materials

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Analytic compact model of ballistic and quasi-ballistic cylindrical gate-all-around metal-oxide-semiconductor field effect transistors including two subbands

Analytic compact model of ballistic and quasi-ballistic cyli...

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作者： Cheng, He Uno, Shigeyasu Numata, Tatsuhiro Nakazato, Kazuo Department of Electrical Engineering and Computer Science Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan JST CREST Chiyoda Tokyo 102-0075 Japan Department of Electrical and Electronic Engineering Ritsumeikan University Kusatsu Shiga 525-8577 Japan

We propose a compact model of drain current in the ballistic and quasi-ballistic modes for cylindrical gate-all-around (GAA)-MOSFETs with two subbands based on the perturbation theory. By setting one unknown parameter, we can use it to express surface potential and electron confinement energy levels to calculate drain current analytically. With our compact model, we obtained a good agreement with the numerical compact model. In addition, we carry out a NMOS inverter circuit simulation using this model. © 2013 The Japan Society of Applied Physics.

关键词： Drain current

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Electrolytic tilt sensor with domed cap for improved performance

Electrolytic tilt sensor with domed cap for improved perform...

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作者： Choi, Ju Chan Choi, Young Chan Lee, June Kyoo Kong, Seong Ho Graduate School of Electrical Engineering and Computer Science Kyungpook National University Daegu 702-701 Korea Republic of School of Electronics Engineering Kyungpook National University Daegu 702-701 Korea Republic of

In recent years, some efforts have been made in our laboratory to improve the performance of previously reported electrolyte-based tilt sensors. Even though the previously reported electrolytic tilt sensors have merits of low cost and a simple fabrication process, they show several undesirable performances such as inconsistent response time and slow reversion when it returns to the initial position (inclination angle of 0°) from an arbitrary tilted position. The irregular performances are caused by the flat upper cover. In this paper, we report the design and fabrication of an electrolytic tilt sensor with a domed cap for improving the response time and instant reversion. For a fast and regular reversion, the cavities on the cap substrate have been designed to be a domed shape. The measured reversion time with the proposed tilt sensor from 10 ° to the initial state was approximately 0.3 s, which is more than 6 times faster than the previously reported one. © 2013 The Japan Society of Applied Physics.

关键词： Electrolytes

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Infrared detector array with an incident-ray concentrator

Infrared detector array with an incident-ray concentrator

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作者： Choi, Ju Chan Lee, June Kyoo Choi, Young Chan Jung, Dong Geun Kong, Seong Ho Graduate School of Electrical Engineering and Computer Science Kyungpook National University Daegu 702-701 Korea Republic of School of Electronics Engineering Kyungpook National University Daegu 702-701 Korea Republic of

In this paper, we report an infrared (IR) detector array combined with an incident-ray concentrator for improving performance characteristics, such as optical responsivity and fill factor. To achieve an improved optical responsivity, the use of an IR concentrating structure for collecting incident IR rays is proposed in this paper. This structure is combined with an IR detector by epoxy bonding. Compared with a conventional IR detector without an IR concentrator, the responsivity of the proposed IR detector with an IR concentrator increased approximately 17.5%. By applying the IR concentrator, the fill factor of the fabricated IR detector array was also increased owing to the increased input IR light in the sensing area. © 2013 The Japan Society of Applied Physics.

关键词： Infrared detectors

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Development and evaluation of a hospital-wide healthcare-associated surgical site infection detection algorithm

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Journal of Microbiology, Immunology and Infection 2015年第2期48卷 S43-S43页

作者： Yi-Ju Tseng Bo-Chiang Huang Hui-Chi Lin Ming-Yuan Chen Rung-Ji Shang Wang-Huei Sheng Yee-Chun Chen Feipei Lai Shan-Chwen Chang Children's Hospital Informatics Program Boston Children's Hospital Boston MA USA Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taiwan Center for Infection Control National Taiwan University Hospital (NTUH) Taiwan Information Systems Office NTUH Taipei Taiwan Department of Internal Medicine NTUH and College of Medicine Taiwan National Institute of Infectious Diseases and Vaccinology National Health Research Institutes Taiwan Department of Computer Science and Information Engineering National Taiwan University Taiwan

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All-polymer electrolytic tilt sensor with conductive poly(dimethylsiloxane) electrodes

All-polymer electrolytic tilt sensor with conductive poly(di...

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作者： Lee, June Kyoo Choi, Ju Chan Kong, Seong Ho Graduate School of Electrical Engineering and Computer Science Kyungpook National University Daegu 702-701 Korea Republic of School of Electronics Engineering Kyungpook National University Daegu 702-701 Korea Republic of

In this study, an all-polymer electrolytic tilt sensor with conductive and corrosion-resistant poly(dimethylsiloxane) (PDMS) electrodes was designed and its performances were characterized. A PDMS cavity in the sensor for holding an electrolyte was fabricated by soft lithography using an ultraviolet-sensitive polymer. A conductive PDMS composite (gPDMS) with graphite powder was used for the electrode to measure the inclination angle of the electrolyte. A gPDMS composite with a graphite concentration above 40wt% was able to function as a conductive polymer. The fabricated all-polymer tilt sensor exhibited a detectable inclination range of 60 and showed a relatively linear output signal compared with those exhibited by conventional micromachined tilt sensors with axis asymmetrical cavities. The maximum hysteresis of the output signal was approximately 0.1 Vrms when the sensor repeatedly tilted and leveled off. In addition to the fundamental characterization of the sensor, various characteristics of the all-polymer tilt sensor, such as time-dependent and electrolyte-volume-dependent variations in the output signal, were investigated in this study. While the performance of the proposed sensor was comparable to that of conventional silicon-micromachined tilt sensors, the sensor could be produced at a fraction of the cost required to fabricate the conventional sensors. © 2013 The Japan Society of Applied Physics.

关键词： Electrolytes

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An effective routing protocol with guaranteed route preference for mobile Ad Hoc networks

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International Journal of Distributed Sensor Networks 2014年第unknown期2014卷 1-18页

作者： Chien, Feng-Tsun Wu, Kuo-Guan Chan, Yu-Wei Chang, Min-Kuan Su, Yi-Sheng Department of Electronics Engineering National Chiao Tung University Hsinchu City 30010 Taiwan Graduate Institute of Communication National Chung Hsing University Taichung City 402 Taiwan Department of Electrical Engineering National Chung Hsing University Taichung City 402 Taiwan Department of Information Management Chung Chou University of Science and Technology Yuanlin 510 Taiwan Department of Computer Science and Information Engineering Chang Jung Christian University Tainan City 71101 Taiwan

Battery power and queue conservation are critical issues in mobile ad hoc network (MANET). These two factors not only affect the delivery ratio but also the lifetime of the network. In this work, we will propose a simple and effective routing protocol to extend the lifetime and to evenly distribute the traffic loads of the networks as possible. Furthermore, a concept of serving capacity is introduced to reflect the level of congestion around a node. In this way, the proposed routing protocols can avoid network congestion and achieve higher packet delivery ratios. The extensive computer simulation is conducted to compare the proposed protocol against many existing routing protocols. The results show that the proposed routing protocol can have better performance in terms of queueing length, lifetime, and packet delivery ratio and have comparable end-to-end delays. © 2014 Feng-Tsun Chien et al.

关键词： ROUTING (computer network management) AD hoc networks (computer networks) INTERNET protocols ENERGY conservation INTERNET traffic computer simulation

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A revisit of marino-tomei's result on output feedback control of a class of non-minimum phase nonlinear systems

A revisit of marino-tomei's result on output feedback contro...

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9th IFAC Symposium on Nonlinear Control Systems, NOLCOS 2013

作者： Lin, Wei Wei, Wei Liu, Xinghua Dept. of Electrical Engineering and Computer Science Case Western Reserve University Cleveland OH 44106 United States Harbin Institute of Technology Shenzhen Graduate School China

ISBN: (纸本)9783902823472

In this note, global stabilization by output feedback is investigated for a class of non-minimum-phase nonlinear systems previously considered by Marino and Tomei (2005). It is shown that it is possible to construct, via a new design method that involves no filter transformation, a globally stabilizing dynamic output feedback controller of order n, instead of n + 2(ρ - 1), for the non-minimum phase nonlinear system in output feedback form Marino and Tomei (2005), under a slightly general condition (i.e., Assumption 2.2) together with the assumption that the nonlinear system is non-minimum-phase with respect to the original output, but minimum-phase with respect to a virtual linear output. Two examples are given to illustrate the simplicity of the new design approach and its effectiveness. © IFAC.

关键词： Feedback control

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Optics and photonics of Taiwan international conference: Introduction by the feature editors

Optics and photonics of Taiwan international conference: Int...

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作者： Fuh, Andy Y.-G. Khoo, Iam Choon Lin, Tsung-Hsien Huang, Yi-Pai Chien, Liang-Chy Chigrinov, Vladimir G. Yang, Tsung-Hsun Department of Physics Advanced Optoelectronic Technology Center National Cheng Kung University Tainan701 Taiwan Department of Electrical Engineering Pennsylvania State University University ParkPA16802 United States Department of Photonics National Sun Yat-Sen University Kaohsiung804 Taiwan Department of Photonics and Display Institute National Chiao Tung University Hsin-Chu300 Taiwan Chemical Physics Interdisciplinary Program Liquid Crystal Institute Kent State University KentOH44242 United States Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong Department of Optics and Photonics National Central University Chung-Li City320 Taiwan

This Applied Optics feature issue is dedicated to the Optics and Photonics of Taiwan International Conference (OPTIC 2013), held 5-7 December 2013 in Zhongli (Chung-Li), Taiwan. The conference takes place every year at different universities in Taiwan. This feature issue is particularly focused on a broad range of topics covered under subconference VII (Display Technology), and also includes topics pertaining to display technology under other subconferences. In addition, the feature issue is open to all other researchers in the related area. © 2014 Optical Society of America.

关键词： Photonics

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