Browsing by Issue Date, starting with "2012-11-21"

Now showing 1 - 20 of 34947

Efficient solid-state white light-emitting electrochemical cells based on phosphorescent sensitization
(2012-11-21)
Su, Hai-Ching
;
Chen, Hsiao-Fan
;
Chen, Po-Hsien
;
Lin, Shih-Wei
;
Liao, Chih-Teng
Efficient phosphorescent sensitized white light-emitting electrochemical cells (LECs) based on a blue-emitting phosphorescent cationic transition metal complex (CTMC) doped with a red-emitting fluorescent dye are demonstrated. Blue phosphorescence and phosphorescence-sensitized red fluorescence contribute to white emission. Furthermore, the microcavity effect of the device structure is utilized to suppress the green part of the electroluminescence (EL) spectrum of the blue-emitting phosphorescent metal complex (1) via destructive interference. Hence, more saturated blue EL emission can be obtained. When combined with saturated red emission, white EL emission with Commission Internationale de l'Eclairage coordinates approaching (0.33, 0.33) can be obtained without the need for saturated deep-blue emitting CTMCs. Peak external quantum efficiency and power efficiency of the phosphorescence sensitized white LECs are up to 7.9% and 15.6 lm W-1, respectively. These efficiencies are among the highest reported for white LECs and reveal that phosphorescent sensitization is useful for improving device efficiencies of white LECs.
Particle chain display - an optofluidic electronic paper
(2012-11-21)
Fan, Shih-Kang
;
Chiu, Cheng-Pu
;
Hsu, Ching-Hsiang
;
Chen, Shih-Chiang
;
Huang, Li-Lin
A particle-based display medium and a driving mechanism insensitive to the charge polarity of those particles, based on the transformation of particle chains, are developed for reflective electronic paper displays. Particle chains are formed by dipole-dipole interactions between polarized particles with an appropriate electric field applied across the tested display medium, L e. the solution that regulates the light in the field of display technology, containing neutral polystyrene (PS) particles dispersed in water. Formation of the particle chains results in a large change in optical transmittance and reflectance of the display medium. The performance of the particle chain displays (PCD) was evaluated according to macroscopic (device), microscopic (particle) and optical (reflectance) points of view. A display medium (thickness 100 mu m) containing colored PS particles (3 mu m, 2.5% w/v) was polarized to display the fixed images of the directly driven electrodes and programmable images of arrayed (5 x 5) electrodes with electric fields (0.48 MV m(-1) and 0.09 MV m(-1), 500 kHz, respectively). The formation of particle chains under electric fields (0.2 MV m(-1) and 0.4 MV m(-1), 500 kHz) was observed in the microscopic images of a display medium (thickness 100 mu m) with fluorescent PS particles (5 mu m, 1%). Images recorded with a confocal microscope demonstrated the particle chains. The opacity, a common parameter serving to characterize a display medium, was derived by measuring the reflectance ratio of a black background to a white background of the display medium with varied thickness and particle concentration. The temporal response of a display medium (thickness 50 mu m) with black PS particles (3 mu m, 5%) was tested. When an electric field (0.6 MV m(-1), 500 kHz) was applied, the reflectance increased twice at the first data point in 0.7 s, attaining a contrast ratio of 2. Application of a voltage (20 s) yielded a contrast ratio of 10. The performance of a tested display medium, composed of simple PS particles and water and driven to form particle chains by polarization, is reported.
一種鈣鈦礦氧化物觸媒的製備方法
(2012-11-21)
吳樸偉
;
張雲閔
本發明係提供一種La0.6Ca0.4Co1-xIrxO3(x=0~1)鈣鈦礦氧化物觸媒的製備方法。該觸媒在鹼性系統中，同時具有優良的氧氣生成與還原反應雙功能催化能力。使用固態燒結法(Solid State Reaction Method)，且以檸檬酸鹽法(Amorphous Citrate Precursor)與機械研磨法(Mechanical Alloying)以製備鈣鈦礦觸媒。此觸媒的電化學活性，相對於傳統La0.6Ca0.4CoO3，不論是電流對電壓曲線、定電流放電或定電流充電，不僅能有效地降低電流對電壓的損失，更能有效地提升電化學性能。
Isotope Label-Aided Mass Spectrometry Reveals the Influence of Environmental Factors on Metabolism in Single Eggs of Fruit Fly
(2012-11-21)
Tseng, Te-Wei
;
Wu, June-Tai
;
Chen, Yu-Chie
;
Urban, Pawel L.
;
應用化學系
In order to investigate the influence of light/dark cycle on the biosynthesis of metabolites during oogenesis, here we demonstrate a simple experimental protocol which combines in-vivo isotopic labeling of primary metabolites with mass spectrometric analysis of single eggs of fruit fly (Drosophila melanogaster). First, fruit flies were adapted to light/dark cycle using artificial white light. Second, female flies were incubated with an isotopically labeled sugar (C-13(6)-glucose) for 12 h - either during the circadian day or the circadian night, at light or at dark. Third, eggs were obtained from the incubated female flies, and analyzed individually by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS): this yielded information about the extent of labeling with carbon-13. Since the incorporation of carbon-13 to uridine diphosphate glucose (UDP-glucose) in fruit fly eggs is very fast, the labeling of this metabolite was used as an indicator of the biosynthesis of metabolites flies/eggs during 12-h periods, which correspond to circadian day or circadian night. The results reveal that once the flies adapted to the 12-h-light/12-h-dark cycle, the incorporation of carbon-13 to UDP-glucose present in fruit fly eggs was not markedly altered by an acute perturbation to this cycle. This effect may be due to a relationship between biosynthesis of primary metabolites in developing eggs and an alteration to the intake of the labeled substrate - possibly related to the change of the feeding habit. Overall, the study shows the possibility of using MALDI-MS in conjunction with isotopic labeling of small metazoans to unravel the influence of environmental cues on primary metabolism.
於矽晶片上形成太陽能電池之矽鍺層的方法
(2012-11-21)
張翼
;
唐士軒
;
林岳欽
本發明係在矽基板上成長矽鍺層，並在其上成長三五族化合物半導體太陽能電池。首先在矽晶片上使用矽離子佈植方法以促進矽晶片和矽鍺磊晶層的鬆弛，降低矽鍺磊晶層的厚度，再於矽基板上生長無應力的P型摻雜矽鍺緩衝層，藉以降低三五族高效率太陽能電池生產成本。並於矽鍺緩衝層上形成三五族高效率太陽能電池。
Stable Isotope-Labeled Raman Imaging Reveals Dynamic Proteome Localization to Lipid Droplets in Single Fission Yeast Cells
(2012-11-21)
Venkata, Hemanth Nag Noothalapati
;
Shigeto, Shinsuke
;
應用化學系
;
應用化學系分子科學碩博班
;
Department of Applied Chemistry
Lipid droplets have been hypothesized to be intimately associated with intracellular proteins. However, there is little direct evidence for both spatiotemporal and functional relations between lipid droplets and proteins provided by molecular-level studies on intact cells. Here, we present in vivo time-lapse Raman imaging, coupled with stable-isotope (C-13) labeling, of single living Schizosaccharomyces pombe cells. Using characteristic Raman bands of proteins and lipids, we dynamically visualized the process by which C-13-glucose in the medium was assimilated into those intracellular components. Our results show that the proteins newly synthesized from incorporated C-13-substrate are localized specifically to lipid droplets as the lipid concentration within the cell increases. We demonstrate that the present method offers a unique platform for proteome visualization without the need for tagging individual proteins with fluorescent probes.
Laser-Polarization Effects on Coherent Vibronic Excitation of Molecules with Quasi-Degenerate Electronic States
(2012-11-22)
Kanno, Manabu
;
Ono, Yukari
;
Kono, Hirohiko
;
Fujimura, Yuichi
;
應用化學系分子科學碩博班
The laser-polarization effects on nonadiabatically couple pi-electron rotation (ring current) and molecular vibration have been theoretically analyzed for aromatic molecules with quasi-degenerate excited states irradiated by an ultrashort laser pulse of arbitrary polarization. We first derived general formulations of the coherent electronic wave packet and expectation value of electronic angular momentum within a frozen-nuclei model. The relative quantum phase of the superposed quasi-degenerate States, which.. determines the oscillating behavior of angular momentum; can be manipulated by the ellipticity and orientation of the incident laser. Nuclear wave packet simulations with a model molecule confirmed the controllability of pi-electron rotation, although the angular momentum is gradually reduced by nonadiabatic couplings. The amplitude of molecular vibration depends prominently on the orientation of linear polarization vectors rather than the helicity of circular polarization. The characteristic feature in vibrational amplitudes is attributed to the interference in nonadiabatic transition governed by the-relative quantum phase between nuclear wave packets. This offers a new strategy for laser control of molecular vibrations through the wave packet interference in nonadiabatic transition.
DRUG CARRIER WITH THERMAL SENSITIVITY, MANUFACTURING METHOD THEREOF, AND USE THEREOF
(2012-11-22)
CHEN San-Yuan
;
HU Shang-Hsiu
;
HUANG Hsin-Yang
A drug carrier with thermal sensitivity, a manufacturing method thereof, and a use thereof are disclosed. The drug carrier comprises a nano-magnetic particle, a drug, a composite polymer, and a dense silica shell. The nano-magnetic particle and the drug are encapsulated in the composite polymer which is formed by self-assembly a water-soluble polymer (such as poly vinyl alcohol) and a thermosensitive copolymer (such as Pluronic F68 or Pluronic F127). The stability and drug release of the drug carrier a can be adjusted by combining PVA and thermosensitive copolymer with a different ratio. When an external magnetic field was applied, the cores exhibit significant size shrinkage and the diameter of the drug carrier decreases more than 10 folds due to the change of temperature, which causes burst-like drug release because of shell destruction and physical collapse of the drug carrier.
RUTHENIUM COMPLEX-BASED PHOTOSENSITIZER DYES FOR DYE-SENSITIZED SOLAR CELLS
(2012-11-22)
Diau Eric Wei-Guang
;
Huang Wei-Kai
This invention relates to ruthenium complex-based photosensitizer dyes for dye-sensitized solar cells, which have a general structural formula represented by formula (I).
Vanadium Substitution of LiFePO4 Cathode Materials To Enhance the Capacity of LiFePO4-Based Lithium-Ion Batteries
(2012-11-22)
Chiang, Ching-Yu
;
Su, Hui-Chia
;
Wu, Pin-Jiun
;
Liu, Heng-Jui
;
Hu, Chih-Wei
The mechanism of enhancing the capacity of the LiFePO4 cathodes in lithium ion batteries by the addition of a small amount of vanadium, which locate on the lithium site and induce lithium vacancies in the crystal structure, is reported in this article. As a result, the capacity increases from 138 mAh/g found for pristine LiFePO4 to 155 mAh/g for the V-added compound, and the conductivity increases from 4.75 x 10(-4) S/cm for the LiFePO4 without V addition to 1.9 x 10(-2) S/cm for the V-added compound. A possible model to facilitate the enhancement of conductivity and capacity is described with evidence supported by X-ray powder diffraction, X-ray absorption spectroscopy, and neutron powder diffraction data.
LOCALIZATION DEVICE AND LOCALIZATION METHOD WITH THE ASSISTANCE OF AUGMENTED REALITY
(2012-11-22)
Lo Chi-Chung
;
Tseng Yu-Chee
;
Lin Chung-Wei
;
Kuo Lun-Chia
;
Lin Tsung-Ching
A localization device assisted with augmented reality and a localization method thereof are provided. The localization device includes a subject object coordinate generating unit, a relative angle determining element and a processing unit. The subject object coordinate generating unit selects at least three subject objects outside the localization device and obtains at least three subject object coordinate values of the at least three subject objects. The relative angle determining element determines at least two viewing angle differences between any two of the at least three subject objects. The processing unit generates a location coordinate value of the localization device according to the at least two viewing angle differences and the at least three subject object coordinate values.
民歌音樂的波瀾
(2012-11-25)
高綮翊
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Department of Communication and Technology
;
傳播與科技學系
每個年代，都有屬於他們的流行歌，這些旋律，陪伴著那個時代的人成長，體會過年少青狂，經歷過成長蛻變。每一首歌背後，都連結著一個個的故事，值得我們細細品味。
這個人　我的瘋言瘋語
(2012-11-25)
張睿文
;
Department of Communication and Technology
;
傳播與科技學系
無法表達，因為不想讓人知道。當看到的時候，千萬不要看得太認真，因為真假虛實並沒有一定的標準。就當作保有童年的天真和無知的胡言亂語吧！
V怪客的革命魅力
(2012-11-25)
陳儀澧
;
Department of Communication and Technology
;
傳播與科技學系
撇開經過改編之後翻攝的電影會有失原味，導演詹姆斯．麥克特透過整部電影，想向觀眾述說的理念、以及敘事運用的手法操作，可以說是相當的出神入化。
榮耀勁竹　誰羽爭鋒
(2012-11-25)
姜藍茵
;
Department of Communication and Technology
;
傳播與科技學系
國立交通大學羽球隊舉辦的勁竹盃，迄今已邁入第十三屆。今年勁竹盃沿襲以往傳統，廣邀各大專院校羽球校隊共襄盛舉。各校好手齊聚一堂，除了檢視練習成果，也期望為自己代表的學校爭取榮譽。
魔力歌詞　心有靈犀
(2012-11-25)
王柔婷
;
Department of Communication and Technology
;
傳播與科技學系
「你不是文字的奴隸，你是他的主人。」至今才五十歲的林夕，創作量多元豐富，為無數歌手寫出代表作，其中包括張國榮的〈追〉、王菲的〈紅豆〉、陳奕迅的〈十年〉到近期歌手A-Lin的〈失戀無罪〉。
Nanomechanical properties of GaSe thin films deposited on Si(111) substrates by pulsed laser deposition
(2012-11-25)
Jian, Sheng-Rui
;
Juang, Jenh-Yih
;
Luo, Chih-Wei
;
Ku, Shin-An
;
Wu, Kaung-Hsiung
The correlations between the crystalline structure and mechanical properties of GaSe thin films were investigated by means of X-ray diffraction (XRD) and nanoindentation techniques. The GaSe thin films were deposited on Si(111) substrates deposited at various deposition temperatures using pulsed laser deposition (PLD). The XRD results indicate that all the GaSe thin films are pure hexagonal phase with highly (000l)-oriented characteristics. Nanoindentation results revealed apparent discontinuities (so-called multiple "pop-in" events) in the load-displacement curve, while no discontinuity was observed in the unloading segment of the load-displacement curve. The hardness and Young's modulus of GaSe thin films determined by the continuous stiffness measurements (CSM) method indicated that both mechanical parameters increased with the increasing deposition temperature with the hardness and the Young's modulus being increased from 1.2 +/- 0.1 to 1.8 +/- 0.1 GPa and from 39.6 +/- 1.2 to 68.9 +/- 2.7 GPa, respectively, as the deposition temperature was raised from 400 to 475 degrees C. These results suggest that the increased grain size might have played a prominent role in determining the mechanical properties of the PLD-derived GaSe thin films. (C) 2012 Elsevier B. V. All rights reserved.
放映人生的電影時光
(2012-11-25)
鄭乃文
;
Department of Communication and Technology
;
傳播與科技學系
《時光電影院》是愛好電影的幾米，向自己喜愛的電影，以及電影的美麗致敬的繪本。幾米用繪本創作一個熱愛電影的女孩的故事，展現電影的生命力以及人們的生命與電影的浪漫關係。
那位小男孩
(2012-11-25)
林芷瑩
;
Department of Communication and Technology
;
傳播與科技學系
手足，所指的是兄弟姐妹，世界上除了父母之外最親最愛我們的人。他們就如同我們的生命共同體，之間有著奇妙的心電感應，這一輩子血濃於水，誰也永遠離不開誰。
理所當然的台灣巷弄
(2012-11-25)
吳悅萍
;
Department of Communication and Technology
;
傳播與科技學系
跟著一台英國經典國民車，在《台灣巷弄》中走進走出，細細觀察那些習以為常的事物，被描繪成一張張插畫，突然之間會覺得它們很陌生，但在記憶和眼前所見相互衝擊之後，熟悉感油然而生，不經令人會心一笑。