Browsing by Issue Date, starting with "2013-03-11"

Now showing 1 - 20 of 32207

平面天線
(2013-03-11)
鍾世忠
;
王思本
;
凌菁偉
本發明係揭露一種平面天線，其包含一基板、一接地面以及一饋入線，接地面設置於基板之一側，且接地面具有一鏤空部，饋入線用以饋入一訊號，且設置於該基板之另一側，對應該鏤空部。本發明亦揭露一種平面天線，其包含一基板、一接地面以及一饋入線，接地面設置於基板之一側，且接地面具有一第一鏤空部和一第二鏤空部，饋入線用以饋入一訊號，並設置於該基板之另一側，該饋入線具有一第一分支饋入部和一第二分支饋入部，且該第一分支饋入部和該第二分支饋入部分別對應該第一鏤空部和該第二鏤空部。
Service integrated access network using highly spectral-efficient MASK-MQAM-OFDM coding
(2013-03-11)
Sung, Jiun-Yu
;
Chow, Chi-Wai
;
Yeh, Chien-Hung
;
Wang, Yin-Chen
;
光電工程學系
A highly spectral-efficient M-ary amplitude shift keying M-ary quadrature amplitude modulation orthogonal frequency division multiplexing (MASK-MQAM-OFDM) was proposed for the access network. With the highly spectral-efficient characteristic of MASK-MQAM-OFDM, seamless integration among passive-optical network (PON), wireless fiber-to-the-antenna (FTTA), and optical wireless visible light communication (VLC) can be achieved without using extra bandwidth for different services. A proof-of-concept experiment was demonstrated. The relation between the spectral efficiency of the MASK-MQAM-OFDM and the upstream signal performance was also discussed. (c) 2013 Optical Society of America
聲學照相機
(2013-03-11)
白明憲
;
林家鴻
;
劉冠良
本發明係提供一種聲學照相機，其上設有包括第一聲源擷取裝置、第二聲源擷取裝置以及開關，開關分別與第一聲源擷取裝置及第二聲源擷取裝置連接，利用開關選擇第一聲源擷取裝置或第二聲源擷取裝置後，以進行將被測物的聲源重建為聲場。其中第一聲源擷取裝置中的第一麥克風陣列係一種可用於近場聲場之等間距的麥克風陣列，第二聲源擷取裝置中的第二麥克風陣列係一種可用於遠場聲場之非等間距的麥克風陣列。
High thermal stability of correlated color temperature using current compensation in hybrid warm white high-voltage LEDs
(2013-03-11)
Chen, Kuo-Ju
;
Kuo, Hsuan-Ting
;
Chen, Hsin-Chu
;
Shih, Min-Hsiung
;
Wang, Chao-Hsun
This study experimentally and numerically examines the correlated color temperature (CCT) stability issue for hybrid warm white high-voltage light-emitting diodes (HV-LEDs) by using a current compensation method. This method could efficiently maintain the CCT stability factor at approximately 1.0 and yield greater color uniformity with Delta u'v' values ranging from 0.017 to 0.003 in CIE 1976 chromaticity coordinates. The simulation results show that the red chip intensity drop is the primary cause of CCT instability in the hybrid warm white system when the temperature increases. Therefore, Furthermore, results indicate that the relative lumen drop improves from 21% to 15% by using a current compensation method. (c) 2013 Optical Society of America
Surface-enhanced Raman scattering of graphene with photo-assisted-synthesized gold nanoparticles
(2013-03-11)
Cheng, Cheng-En
;
Lin, Chi-Yuan
;
Chang, Hao-Yu
;
Huang, Chen-Han
;
Lin, Hsing-Ying
This paper presents a convenient and reliable method to prepare gold nanoparticles (AuNPs) on graphene. Photo-assisted synthesis (PAS) was employed to grow AuNPs in AuCl4- electrolyte on graphene. The size of AuNPs could be as large as 130 nm. This optical method had a steady growth rate of AuNPs. The distribution of AuNPs was well controlled by focusing the laser for PAS. The minimum diameter of the distribution was approximately 1 mu m. Surface-enhanced Raman scattering of graphene due to AuNPs was observed. Electrical fields near AuNPs calculated by the finite-difference time-domain algorithm ensured that the Raman enhancement was attributed to the localized surface plasmons of AuNPs. (c) 2013 Optical Society of America
適用於五子棋或者是六子棋的自動棋譜產生系統及其方法
(2013-03-11)
莊仁輝
;
羅國華
;
許諾白
;
吳毅成
一種自動棋譜產生方法，找出攝影機所拍攝之棋盤影像中的棋子區域，並由棋盤影像判定是否有異動之棋子；並依照棋子的先後順序建立棋盤上所有棋子在影像中的位置相對關係，再藉由此位置相對關係資訊重建棋盤的座標系與各棋子之位置及思考時間，此自動棋譜產生方法可免除因需偵測棋盤格線所可能造成的困擾與誤差，並獲得一準確的電子棋譜。
古蘭經─造物主的話
(2013-03-13)
趙錫鴻
;
開放教育推動中心
;
Open Education Office
課程首頁本課程是由交通大學新文藝復興閱讀計畫提供。 96 年 8 月當各大學紛紛摩拳擦掌準備迎接新生的同時，交通大學校長吳重雨則因為一則來自於七月份泰晤士報，有關於英國首相布朗公布其夏日讀書清單的新聞中，看到了他對知識的尊重。在這同時，吳重雨校長也思考著，要如何為學生準備追求知識的環境和激發他們對知識的尊重與喜愛。台積電張忠謀董事長曾陳述他 18 歲進入哈佛那一年，博覽文史哲理工經典群籍，至此奠定了他求知的基礎，並借海明威名言，將其改為「哈佛這一年為人生可帶走的盛宴。」吳重雨校長以張董事長的學習為借鏡，認為學生固然能藉由自我閱讀的方式學習到豐沛的知識，但透過名人、大師親臨現場地介紹經典書籍，更能加深學子們對於書籍的認識與興趣，這也是「新文藝復興閱讀計劃」 ( 以下簡稱 : 「經典名著選讀」 ) 活動展開籌劃的緣由。於是，吳重雨校長便積極敦請「交大通識教育委員會」，接手籌備本計劃的相關活動，而該中心也成為實際施行本計畫的策動、開課以及認證單位。至此，期許交大學子藉由閱讀、聽講來提昇人文素養、開拓視野的「新文藝復興閱讀計劃」，就此展開。
Mobility management with the central-based location area policy
(2013-03-13)
Liou, Ren-Huang
;
Lin, Yi-Bing
;
資訊工程學系
;
Department of Computer Science
In Long Term Evolution (LTE), the cells (the radio coverages of base stations) are grouped into the Tracking Areas (TAs), and the TAs are further grouped into the TA List (TAL). The location of the User Equipment (UE) is tracked at the TAL level. To better capture the "movement locality" of the UE, when the UE leaves the current TAL, the UE is assigned a new TAL whose central TA is the TA where the UE currently resides. This paper investigates the performance of the central-based LTE mobility management scheme, and compares this scheme with the previously proposed central-based mobility management schemes: the movement-based and the distance-based schemes. Our study indicates that under some traffic/mobility patterns, the LTE scheme yields the best performance. (C) 2012 Elsevier B.V. All rights reserved.
Energy transfer and phosphorescence-quenching dynamics in a phosphorescent host-guest system
(2013-03-13)
Chang, Chih-Wei
;
Lee, Rei-Yun
;
Diau, Eric Wei-Guang
;
應用化學系
;
應用化學系分子科學碩博班
We investigated the energy transfer dynamics in a phosphorescent host-guest system. Two spirobifluorene derivatives, [2,7-bis(2,2-diphenylvinyl)-9,9'-spirobifluorene] (DPVSBF) and [2,7-bis(1,2,2-triphenylvinyl)-9,9'-spirobifluorene] (TPVSBF), were doped with the red phosphor complex [Os(bpftz)(2)(PPh2Me)(2)] (Os-R). The two hosts exhibit similar host-to-guest energy transfer efficiencies; however, the backward energy transfer from the Os-R complex to TPVSBF is slower than that from Os-R to DPVSBF. Quantum chemical calculations suggest that the backward energy transfer dynamics are related to the host's triplet-state energy level. The greater energy of the TPVSBF triplet state compared to that of DPVSBF plays a crucial role in its ability to confine triplet excitons in Os-R. (C) 2013 Elsevier B. V. All rights reserved.
ELECTRICAL TEST STRUCTURE APPLYING 3D-ICS BONDING TECHNOLOGY FOR STACKING ERROR MEASUREMENT
(2013-03-14)
Chen Kuan-Neng
;
Li Shih-Wei
A 3D integrated circuit including a first wafer and a second wafer is provided. The first wafer includes a first conduction pattern. The second wafer includes a second conduction pattern which is electrically connected to the first conduction pattern. A displacement between the first wafer and the second wafer is determined by a resistance of the first conduction pattern and the second conduction pattern.
Anharmonic Rice-Ramsperger-Kassel-Marcus (RRKM) and product branching ratio calculations for the partially deuterated protonated water dimers: Dissociation and isomerization
(2013-03-14)
Song, Di
;
Su, Hongmei
;
Kong, Fan-ao
;
Lin, Sheng-Hsien
;
應用化學系分子科學碩博班
Partially deuterated protonated water dimers, H2O center dot H+ center dot D2O, H2O center dot D+ center dot HDO, and HDO center dot H+ center dot HDO, as important intermediates of isotopic labeled reaction of H3O+ + D2O, undergo direct dissociation and indirect dissociation, i.e., isomerization before the dissociation. With Rice-Ramsperger-Kassel-Marcus theory and ab initio calculations, we have computed their dissociation and isomerization rate constants separately under the harmonic and anharmonic oscillator models. On the basis of the dissociation and isomerization rate constants, branching ratios of two primary products, [HD2O+]/[H2DO+], are predicted under various kinetics models with the harmonic or anharmonic approximation included. The feasible kinetics model accounting for experimental results is shown to include anharmonic effect in describing dissociation, while adopting harmonic approximation for isomerization. Thus, the anharmonic effect is found to play important roles affecting the dissociation reaction, while isomerization rates are shown to be insensitive to whether the anharmonic or harmonic oscillator model is being applied. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794152]
Growth, dielectric properties, and memory device applications of ZrO2 thin films
(2013-03-15)
Panda, Debashis
;
Tseng, Tseung-Yuen
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
In the advancement of complementary metal-oxide-semiconductor device technology, SiO2 was used as an outstanding dielectric and has dominated the microelectronics industry for the last few decades. However, with the recent size downscaling, ultrathin SiO2 is no longer suitable. ZrO2 has been introduced as a high-k dielectric to replace SiO2. This paper reviews recent progress of ZrO2 thin films as dielectric layers for volatile dynamic random access memory ( DRAM) applications and as a gate dielectric for CMOS devices. Materials and electrical properties of ZrO2 films obtained by different deposition methods are compared. The effects of different top and bottom electrodes, and different doping elements, on ZrO2 dielectric properties are described. Applications discussed include the use of ZrO2 in Ge and SiGe nanocrystal-embedded nonvolatile flash memory devices. ZrO2 films as charge trapping layers in SOZOS (poly-Si/SiO2/ZrO2/SiO2/Si) and TAZOS (TaN/Al2O3/ZrO2/SiO2/Si) based nonvolatile flash memory stacks, and bipolar, unipolar, and nonpolar ZrO2-based resistive switching memory devices are also briefly discussed. The impact of electrode materials, metal nanocrystals, metal implantation, metal doping, metal layers, and oxide ion conductor buffer layer on resistive switching properties and switching parameters of emerging ZrO2-based resistive switching memory devices for high speed, low power, nanoscale, nonvolatile memory devices are briefly reviewed. A roadmap of the applications of ZrO2 thin film in future low power, nanoscale microelectronic device applications is realized from this review. (c) 2013 Elsevier B.V. All rights reserved.
Characteristics of high-water-uptake activated carbon/Nafion hybrid membranes for proton exchange membrane fuel cells
(2013-03-15)
Chien, Hung-Chung
;
Tsai, Li-Duan
;
Lai, Chien-Ming
;
Lin, Jiunn-Nan
;
Zhu, Chao-Yuan
A cost-effective and high-throughput method for producing high-water-uptake membranes is developed by combining high-porosity and superior-surface-area activated carbon with Nation. The resultant activated carbon/Nafion hybrid composite exhibits high water uptake and an improved proton conductivity, which can be exploited in a proton exchange membrane fuel cell (PEMFC). This hybrid membrane displays a superior performance to that of the commercial Nation 211 when used in fuel-cell measurements. Electrochemical impedance spectroscopy (EIS) is used to simulate the changes in resistance during the operation of the fuel cells and conclusively explains the improved performance of the composite membranes. (C) 2012 Elsevier B.V. All rights reserved.
Growth of N-Glycyl-L-Valine (GV) single crystal and its spectral, thermal and optical characterization
(2013-03-15)
Janarthanan, S.
;
Samuel, R. Sugaraj
;
Rajan, Y. C.
;
Suresh, P.
;
Thangaraj, K.
A nonlinear optical crystal of N-Glycyl-L-Valine (GV) single crystals was grown by slow evaporation solution growth technique from an aqueous solution. The unit cell parameters and the crystal structure were determined by single crystal X-ray diffraction study. The Fourier transform infrared (FTIR) and proton nuclear magnetic resonance (H-1 NMR) spectral studies were carried out to identify the functional groups of the grown crystals. The ultraviolet visible near infrared (UV-Vis-NIR) spectrum was recorded to study the optical transparency of the grown crystal. The thermogravimetric (TG) and differential thermal (DTA) analyses revealed the thermal stability of the sample. The presence of second harmonic generation (SHG) for the grown crystal was confirmed by Kurtz-Perry powder technique. (C) 2012 Elsevier B.V. All rights reserved.
12 GHz passive harmonic mode-locking in a 1.06 mu m semiconductor optical amplifier-based fiber laser with figure-eight cavity configuration
(2013-03-15)
Chen, Hou-Ren
;
Lin, Kuei-Huei
;
Tsai, Chih-Ya
;
Wu, Hsiao-Hua
;
Wu, Chih-Hsuan
We report the generation of passively harmonic mode-locked pulses using a 1.06 mu m semiconductor optical amplifier (SOA) in a figure-eight laser configuration operated in the all-normal-dispersion regime. Different orders of harmonic mode-locking can be obtained from 30 MHz to 12.02 GHz by changing the injection current of the SOA from 80 to 660 mA together with the adjustment of polarization controllers. The highest pulse repetition rate increases almost linearly with the SOA current. As SOA current is set to 660 mA, we obtain the intracavity power of 46 mW at the highest repetition rate of 12.02 GHz, corresponding to the 1202th harmonic of the fundamental mode-locking frequency. To our best knowledge, this is the lowest intracavity power to generate the highest repetition rate with a passively mode-locked laser in the all-normal-dispersion regime. (C) 2013 Optical Society of America
The burn-in test scheduling problem with batch dependent processing time and sequence dependent setup time
(2013-03-15)
Pearn, W. L.
;
Hong, J. S.
;
Tai, Y. T.
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工業工程與管理學系
;
Department of Industrial Engineering and Management
The burn-in test scheduling problem (BTSP) is a variation of the complex batch processing machine scheduling problem, which is also a generalisation of the liquid crystal injection scheduling problem with incompatible product families and classical identical parallel machine problem. In the case we investigated on the BTSP, the jobs are clustered by their product families. The product families can be clustered by different product groups. In the same product group, jobs with different product families can be processed as a batch. The batch processing time is dependent on the longest processing time of those jobs in that batch. Setup times between two consecutive batches of different product groups on the same batch machine are sequentially dependent. In addition, the unequal ready times are considered in the BTSP which involves the decisions of batch formation and batch scheduling in order to minimise the total machine workload without violating due dates and the limited machine capacity restrictions. Since the BTSP involves constraints on unequal ready time, batch dependent processing time, and sequence dependent setup times, it is more difficult to solve than the classical parallel batch processing machine scheduling problem with compatible product families or incompatible product families. These restrictions mean that the existing methods cannot be applied into real-world factories directly. Consequently, this paper proposes a mixed integer programming model to solve the BTSP exactly. In addition, two efficient solution procedures which solve the BTSP are also presented.
Direct observation of quasi-coherent thermal emission by a three-dimensional metallic photonic crystal
(2013-03-15)
Hsieh, Mei-Li
;
Bur, James
;
Kim, Yong-Sung
;
Lin, Shawn-Yu
;
光電工程學系
We report a direct observation of a quasi-coherent thermal emission from a heated three-dimensional photonic-crystal sample. While the sample was under Joule heating, we observed multiple oscillations in its emission interferogram and deduced a coherent length of L-coh congruent to 20-40 mu m, 5-10 times longer than that of a blackbody at comparable wavelengths. The observed, relatively long coherent length is attributed to coupling of thermal emission into lossy Bloch modes that oscillate coherently over a distance determined by decay length and the slow light nature of Bloch modes at the band-edges. (C) 2013 Optical Society of America
Improved DNA detection by utilizing electrically neutral DNA probe in field-effect transistor measurements as evidenced by surface plasmon resonance imaging
(2013-03-15)
Chen, Wen-Yih
;
Chen, Hon-Chen
;
Yang, Yuh-Shyong
;
Huang, Chun-Jen
;
Chan, Hardy Wai-Hong
Intensive efforts have been focused on the development of ultrasensitive DNA biosensors capable of quantitative gene expression analysis. Various neutralized nucleic acids have been demonstrated as alternative and attractive probe for the design of a DNA chip. However, the mechanism of the improvements has not been clearly revealed. In this investigation, we used a newly developed neutral ethylated DNA (E-DNA), a DNA analog with the "RO-P-O" backbone (wherein R could be methyl, ethyl, aryl, or alkyl group) obtained from synthetic procedures, and a silicon nanowire (SiNW) field-effect transistor (FET) to evaluate the difference in DNA detection performance while using E-DNA and DNA as probes. It is demonstrated that using the E-DNA probe in the FET measurement could have a significantly enhanced effect upon the detection sensitivity. Surface plasmon resonance imaging (SPRi) was used to evidence the mechanism of the improved detection sensitivity. SPRi analysis showed the amounts of probe immobilization on the sensor surface and the hybridization efficiency were both enhanced with the use of E-DNA. Consequently, neutral ethylated DNA probe hold a great promise for DNA sensing, especially in the electrical-based sensor. (C) 2012 Elsevier B.V. All rights reserved.
Photoluminescent Gold Nanoclusters as Sensing Probes for Uropathogenic Escherichia coli
(2013-03-15)
Chan, Po-Han
;
Ghosh, Bhaswati
;
Lai, Hong-Zheng
;
Peng, Hwei-Ling
;
Mong, Kwok Kong Tony
Glycan-bound nanoprobes have been demonstrated as suitable sensing probes for bacteria containing glycan binding sites. In this study, we demonstrated a facile approach for generating glycan-bound gold nanoclusters (AuNCs). The generated AuNCs were used as sensing probes for corresponding target bacteria. Mannose-capped AuNCs (AuNCs@Mann) were generated and used as the model sensors for target bacteria. A one-step synthesis approach was employed to generate AuNCs@Mann. In this approach, an aqueous solution of tetrachloroauric acid and mannoside that functionized with a thiol group (Mann-SH) was stirred at room temperature for 48 h. The mannoside functions as reducing and capping agent. The size of the generated AuNCs@Mann is 1.95 +/- 0.27 nm, whereas the AuNCs with red photoluminescence have a maximum emission wavelength of similar to 630 nm (lambda(excitation) = 375 nm). The synthesis of the AuNCs@Mann was accelerated by microwave heating, which enabled the synthesis of the AuNCs@Mann to complete within 1 h. The generated AuNCs@Mann are capable of selectively binding to the urinary tract infection isolate Escherichia coli J96 containing the mannose binding protein FimH expressed on the type 1 pili. On the basis of the naked eye observation, the limit of detection of the sensing approach is as low as similar to 2 x 10(6) cells/mL.
Analysis of optical properties in cylindrical dielectric photonic crystal
(2013-03-15)
Hu, Chung-An
;
Wu, Chien-Jang
;
Yang, Tzong-Jer
;
Yang, Su-Lin
;
電子物理學系
In this work, theoretical formulas for the H-polarization electromagnetic propagation in a cylindrical multilayer structure (CMS) are given. The relationships between two modes, H- and E-polarization are pointed out. With the derived formulae, we present the numerical results for three model structures such as the single cylindrical interface, the single cylindrical slab, and the cylindrical photonic crystal (CPC). In the single cylindrical interface, it is found that there exists a Brewster starting radius at which a minimum reflectance is attained in H-polarization. In the single cylindrical slab, the result illustrates that the reflectance response in the wavelength domain contains the oscillating and nonoscillating regions. As for the CPC, we find the PBG structure at zero azimuthal mode number is very similar to that of planar photonic crystal. The PBG, however, can be strongly influenced by increasing the azimuthal mode number in a CPC. (C) 2012 Elsevier B.V. All ights reserved.