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采用反射式液晶显示器和有机电致发光器件前后双置组合而成的高环境对比度显示器

作者：李君浩(jiun-haw lee) 刘南洲(David N. Liu) (美)吴诗聪(Shin-Tson Wu)

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现代显示 2006年第10期 30-36页

作者： jiun-haw lee Xinyu Zhu Yi-Hsin Lin Wing Kit Choi Tien-Chun Lin Sheng-Chih Hsu Hoang-Yan Lin Shin-Tson Wu 公伟刚（译）朱正龙（译）周立译（译）台湾国立大学光电工程研究生院和电子工程系台北美国中佛罗里达大学光学光子学院美国佛罗里达奥兰多京东方光电科技有限公司

一种高环境对比度(A-CR)和大开口率的显示器已经从理论上证明,并通过把一个正常显黑反射型显示器(NB-RLCD)和一个有机电致发光器件(OLED)堆垛的实验加以证明。这种前后双置(以下称为tandem型)的器件组合可以分别在明亮或昏暗的环境下切... 详细信息

一种高环境对比度(A-CR)和大开口率的显示器已经从理论上证明,并通过把一个正常显黑反射型显示器(NB-RLCD)和一个有机电致发光器件(OLED)堆垛的实验加以证明。这种前后双置(以下称为tandem型)的器件组合可以分别在明亮或昏暗的环境下切换NB-RLCD模式或OLED模式。RLCD的正常显黑特性也可以提升OLED模式工作时的A-CR性能。为了在RLCD模式下获得更好的图像品质,一个复杂并且具有传输功能的结构被用于消除镜面反射和提高可视角至CR﹥2:1超过55°的锥面可视角度。另外,这样的结构也可以提高OLED49.4%的表面量子效率。在我们的实验里,忽略环境亮度因素并使A-CR保持在100:1以上。

关键词：高环境对比度液晶显示器有机电致发光器件

A NEW FABRICATION PROCESS FOR A FLEXIBLE SKIN WITH TEMPERATURE SENSOR ARRAY AND ITS APPLICATIONS

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Acta Mechanica Sinica 2004年第2期20卷 140-145页

作者： lee Gwo-Bin HUANG Fu-Chun lee Chia-Yen MIAU jiun-Jih DepartmentofEngineeringScience NationalChengKungUniversityTainanTaiwan701China InstituteofAeronauticsandAstronautics NationalChengKungUniversityTainanTaiwan701China

This paper reports a novel technique for fabrication of a flexible skin with a temperature sensor array (40×1 sensors). A simplified MEMS technology using platinum resistors as sensing materials, which are sandwiched between two polyimide layers as flexible substrates is developed. The two polyimide layers are deposited on top of a thin aluminum layer, which serves as a sacrificial layer such that the flexible skin can be released by metal etching and peeled off easily. The flexible skin with a temperature sensor array has a high mechanical flexibility and can be handily attached on a highly curved surface to detect tiny temperature distribution inside a small area. The sensor array shows a linear output and has a sensitivity of 7.5 mV/°C (prior to amplifiers) at a drive current of 1 mA. To demonstrate its applications, two examples have been demonstrated, including measurement of temperature distribution around a micro heater of a micro PCR (polymerase chain reaction) chip for DNA amplification and detection of separation point for flow over a circular cylinder. The development of the flexible skin with a temperature sensor array may be crucial for measuring temperature distribution on any curved surface in the fields of aerodynamics, space exploration, auto making and biomedical applications etc.

关键词： MEMS flexible skin temperature sensors TCR polyimide

Morphological and semi-quantitative characteristics of diesel soot agglomerates emitted from commercial vehicles and a dynamometer

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Journal of Environmental Sciences 2009年第4期21卷 452-457页

作者： LUO Chin-Hsiang lee Whei-May LIAW jiun-Jian Department of Safety Health and Environmental Engineering Hungkuang University Graduate Institute of Environmental Engineering "National" Taiwan University Graduate Institute of Information and Communication Engineering Chaoyang University of Technology

Diesel soot aggregates emitted from a model dynamometer and 11 on-road vehicles were segregated by a micro-orifice uniform deposit impactor （MOUDI）. The elemental contents and morphological parameters of the aggregates were then examined by scanning electron microscopy coupled with an energy dispersive spectrometer （SEM-EDS）, and combined with a fractional Brownian motion （fBm） processor. Two mode-size distributions of aggregates collected from diesel vehicles were confirmed. Mean mass concentration of 339 mg/m3 （dC/dlogdp） existed in the dominant mode （180-320 nm）. A relatively high proportion of these aggregates appeared in PM 1, accentuating the relevance regarding adverse health effects. Furthermore, the fBm processor directly parameterized the SEM images of fractal like aggregates and successfully quantified surface texture to extract Hurst coefficients （H） of the aggregates. For aggregates from vehicles equipped with a universal cylinder number, the H value was independent of engine operational conditions. A small H value existed in emitted aggregates from vehicles with a large number of cylinders. This study found that aggregate fractal dimension related to H was in the range of 1.641-1.775, which is in agreement with values reported by previous TEM-based experiments. According to EDS analysis, carbon content ranged in a high level of 30%-50% by weight for diesel soot aggregates. The presence of Na and Mg elements in these sampled aggregates indicated the likelihood that some engine enhancers composed of biofuel or surfactants were commonly used in on-road vehicles in Taiwan. In particular, the morphological H combined with carbon content detection can be useful for characterizing chain-like or cluster diesel soot aggregates in the atmosphere.

关键词： diesel soot fractal morphology carbon fractional Brownian motion

Applying model simulation and photochemical indicators to evaluate ozone sensitivity in southern Taiwan

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Journal of Environmental Sciences 2011年第5期23卷 790-797页

作者： Yen-Ping Peng Kang-Shin Chen Hsin-Kai Wang Chia-Hsiang Lai Ming-Hsun Lin Cheng-haw lee Graduate Institute of Environmental Engineering "National" Taiwan University Institute of Environmental Engineering National Sun Yat-Sen University Institute of Environmental Engineering National Sun Yat-Sen University Department of Health Safety and Environmental Engineering Central Taiwan University of Science and Technology Department of Resources Engineering National Cheng-Kung University

Ozone sensitivity was investigated using CAMx simulations and photochemical indicator ratios at three sites （Pingtung City, Chao-Chou Town, and Kenting Town） in Pingtung County in southern Taiwan during 2003 and 2004. The CAMx simulations compared fairly well with the hourly concentrations of ozone. Simulation results also showed that Pingtung City was mainly a volatile organic compounds （VOC）-sensitive regime, while Chao-Chou Town was either a VOC-sensitive or a NOx-sensitive regime, depending on the seasons. Measurements of three photochemical indicators （H202, HNO3, and NOy） were conducted, and simulated three transition ranges of H202/HNO3 （0.5-0.8）, O3/HNO3 （10.3-16.2） and O3/NOy （5.7-10.8） were adopted to assess the ozone sensitive regime at the three sites. The results indicated that the three transition ranges yield consistent results with CAMx simulations at most times at Pingtung City. However, both VOC-sensitive and NOx-sensitive regimes were important at the rural site Chao-Chou Town. Kenting Town, a touring site at the southern end of Taiwan, was predominated by a NOx-sensitive regime in four seasons.

关键词： photochemical indicator ozone sensitivity volative organic compounds NOx CAMx

CT Brain Image:Abnormalities Recognition and Segmentation

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Journal of Donghua University(English Edition) 2010年第2期27卷 246-249页

作者： TONG Hau-lee Mohammad Faizal Ahmad Fauzi Ryoichi Komiya haw Su-Cheng Faculty of Information Technology Multimedia UniversityJalan Multimedia Faculty of Engineering Multimedia UniversityJalan Multimedia

In order to develop an automated segmentation system for Computed Tomography （CT） brain images, a new approach which consists of several unsupervised segmcotation techniques was introduced. The system segments the CT brain images into three partitions, i. e., abnormalities, cerebrospinal fluid （CSF）, and brain matter. Our approach consists of two phase-segmentation methods. In the first phase segmentation, k-means and fuzzy cmeans （FCM） methods were implemented to segment and transform the images into the binary images. Based on the connected component in binary images, a decision tree was employed for the annotation of normal or abnormal regions. In the second phase segmentation, the modified FCM with population-diameter independent （PDI） segmentation was applied to segment the images into CSF and brain matter. The experimental results have shown that our proposed system is feasible and yield satisfactory results.

关键词： computed tomography ursupervised segmentation k-means fuzzy c-means population-diameter indepentdent

A low power 50Hz argon plasma for surface modification of polytetrafluoroethylene

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Plasma Science and Technology 2022年第11期24卷 1-13页

作者： Yen Theng LAU Wee Siong CHIU Hong Chun lee haw jiunn WOO Oi Hoong CHIN Teck Yong TOU Department of Physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Faculty of Engineering Multimedia UniversityPersiaran CyberjayaCyberjaya 63100Malaysia

The characteristics of a low power 50 Hz argon plasma for surface treatment of polytetrafluoroethylene(PTFE)film is presented in this *** current–voltage behavior of the discharge and time-varying intensity of the discharge showed that a DC glow discharge was generated in reversed polarity at every *** discharge power between 0.5 and 1 W,the measured electron temperature and density were 2–3 eV and∼10^(8) cm^(−3),*** optical emission spectrum of the argon plasma showed presence of some‘impurity species’such as OH,N_(2) and H,which presumably originated from the residual air in the discharge *** exposure of PTFE films to the argon glow plasma at pressure 120 Pa and discharge power 0.5 to 1 W,the water contact angle reduced by 4%to 20%from the original 114°at pristine condition,which confirms improvement of its surface *** increase in wettability was attributed to incorporation of oxygen-containing functional groups on the treated surface and concomitant reduction in fluorine as revealed by the XPS analysis and increase in surface roughness analyzed from the atomic force *** upon storage in ambient air showed retention of the induced increase in surface wettability.

关键词： 50 Hz glow discharge plasma surface treatment PTFE hydrophobic recovery ageing effect

Uniqueness, scale, and resolution issues in groundwater model parameter identification

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Water Science and Engineering 2015年第3期8卷 175-194页

作者： Tian-chyi J.Yeh De-qiang Mao Yuan-yuan Zha Jet-chau Wen Li Wan Kuo-chin Hsu Cheng-haw lee Department of Hydrology and Water Resources The University of Arizona Department of Resources Engineering National Cheng Kung University Department of Geophysics Colorado School of Mines State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Department of Safety Health and Environmental Engineering National Yunlin University of Science and Technology Research Center for Soil & Water Resources and Natural Disaster Prevention National Yunlin University of Science and Technology

This paper first visits uniqueness, scale, and resolution issues in groundwater flow forward modeling problems. It then makes the point that non-unique solutions to groundwater flow inverse problems arise from a lack of information necessary to make the problems well defined. Subsequently, it presents the necessary conditions for a well-defined inverse problem. They are full specifications of （1） flux boundaries and sources/sinks, and （2） heads everywhere in the domain at at least three times （one of which is t = 0）, with head change everywhere at those times being nonzero for transient flow. Numerical experiments are presented to corroborate the fact that, once the necessary conditions are met, the inverse problem has a unique solution. We also demonstrate that measurement noise, instability, and sensitivity are issues related to solution techniques rather than the inverse problems themselves. In addition, we show that a mathematically well-defined inverse problem, based on an equivalent homogeneous or a layered conceptual model, may yield physically incorrect and scenario-dependent parameter values. These issues are attributed to inconsistency between the scale of the head observed and that implied by these models. Such issues can be reduced only if a sufficiently large number of observation wells are used in the equivalent homogeneous domain or each layer. With a large number of wells, we then show that increase in parameterization can lead to a higher-resolution depiction of heterogeneity if an appropriate inverse methodology is used. Furthermore, we illustrate that, using the same number of wells, a highly parameterized model in conjunction with hydraulic tomography can yield better characterization of the aquifer and minimize the scale and scenario-dependent problems. Lastly, benefits of the highly parameterized model and hydraulic tomography are tested according to their ability to improve predictions of aquifer responses induced by independent stresses not u

关键词： Uniqueness Scale Resolution Forward and inverse problems Hydraulic tomography

CHAP-Hyaluronic Acid (CHAP-HA) Filler as an Optimal Candidate for Forehead Filler Augmentation Using a 3-Point Injection Technique

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Journal of Cosmetics, Dermatological Sciences and Applications 2021年第2期11卷 76-83页

作者： Hsiao-Tung lee haw-Yueh Thong Department of Radiology Shin-Kong Wu Ho-Su Memorial Hospital Taiwan Department of Dermatology Shin-Kong Wu Ho-Su Memorial Hospital Taiwan

Minimally invasive forehead augmentation is becoming increasingly popular in Asia. However, treatment of the glabella is associated with injection-related complications. The safety of injections can be increased through a thorough understanding of the anatomy and precise injection planes. The authors propose a 3-point injection technique for forehead augmentation in Asian patients that uses CHAP-hyaluronic acid (CHAP-HA) filler. The longevity of the filler was assessed using high-resolution ultrasound (HRU) imaging. Fifteen patients were examined using HRU before and immediately after treatment and at 1 month, 3 months, 6 months, and 12 months. As evident in HRU imaging, CHAP-HA remained visible within surrounding tissue for 6.4 ± 3.7 months. The mean Global Aesthetic Improvement Scale rating was 2.4 ± 0.5 immediately after treatment, 2.8 ± 0.3 at 1 month, 2.7 ± 0.5 at 3 months, 2.1 ± 0.6 at 6 months, and 1.5 ± 0.6 at 12 months. Minimal side effects were reported. The authors demonstrated that CHAP-HA filler may be an optimal candidate for forehead filler augmentation using a 3-point injection technique.

关键词： CHAP-Hyaluronic Acid (CHAP-HA) Filler High-Resolution Ultrasound (HRU) Forehead Augmentation