Browsing by Issue Date, starting with "2010-06-17"

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DISPLAY
(2010-06-17)
Fan, Shih-Kang
;
Chiu, Cheng-Pu
;
Hsu, Ching-Hsiang
;
Mo, Chi-Neng
;
Chiang, Mei-Tsao
A display includes a first substrate, a first electrode, a second substrate, a second electrode and a display material layer. The first electrode is disposed on the first substrate and the second electrode is disposed on the second substrate. The display material layer is disposed between the first electrode and the second electrode. The display material layer of the invented display includes a solution and a plurality of first micro beads, wherein each of the first micro beads further has a plurality of different axis lengths in different axis directions, and the axis length in at least an axis direction is different from the axis lengths in the rest axis directions so that the first micro beads present different arrangement densities in different driving frequencies under the influence of polarized self-arrangement effect.
Disrupted long-range spin-spiral ordering and electric polarization in the Zn-substituted quantum helimagnet LiCu2-xZnxO2
(2010-06-18)
Hsu, H. C.
;
Lee, W. L.
;
Lin, J. -Y.
;
Liu, H. L.
;
Chou, F. C.
Long-range spin-spiral ordering in quantum quasi-two-dimensional helimagnet LiCu2O2 is destroyed by similar to 8% Zn2+ substitution and a magnetic anomaly near similar to 14 K of different character emerges. Zn substitution may have introduced either a magnetic ground state of spin glass in nature, antiferromagnetic ordering with complex easy-plane anisotropy, or a gapped phase which is phase separated and proportional to the Zn substitution level on a short-range ordered background. The magnetic ground state is modified at the same time that the electric polarization disappears.
Disrupted long-range spin-spiral ordering and electric polarization in the Zn-substituted quantum helimagnet LiCu(2-x)Zn(x)O(2)
(2010-06-18)
Hsu, H. C.
;
Lee, W. L.
;
Lin, J. -Y.
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Liu, H. L.
;
Chou, F. C.
Long-range spin-spiral ordering in quantum quasi-two-dimensional helimagnet LiCu(2)O(2) is destroyed by similar to 8% Zn(2+) substitution and a magnetic anomaly near similar to 14 K of different character emerges. Zn substitution may have introduced either a magnetic ground state of spin glass in nature, antiferromagnetic ordering with complex easy-plane anisotropy, or a gapped phase which is phase separated and proportional to the Zn substitution level on a short-range ordered background. The magnetic ground state is modified at the same time that the electric polarization disappears.
Au-decorated Na(x)H(2-x)Ti(3)O(7) nanobelts exhibiting remarkable photocatalytic properties under visible-light illumination
(2010-06-18)
Pu, Ying-Chih
;
Chen, Yu-Chih
;
Hsu, Yung-Jung
;
材料科學與工程學系
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Department of Materials Science and Engineering
We demonstrated for the first time that Na-intercalated H(2)Ti(3)O(7) (Na(x)H(2-x)Ti(3)O(7)) NBs, prepared in the typical alkaline hydrothermal process, can effectively absorb visible light to carry out photocatalytic reactions. With the capability of effective light absorption in visible range, Na(x)H(2-x)Ti(3)O(7) NBs performed much better in the photoclegradation of thionine than the other three counterpart products including H(2)Ti(3)O(7), mixed Na(2)Ti(6)O(13)/TiO(2) and anatase TiO(2) under visible-light irradiations. As compared to the relevant commercial products like P-25 TiO(2) and Na(2)Ti(3)O(7) powders, the as-synthesized Na(x)H(2-x)Ti(3)O(7) NBs exhibited superior photocatalytic efficiency under UV illumination, demonstrating their potential as an efficient photocatalyst in relevant redox reactions. A further enhancement in the photocatalytic activity can be achieved for Na(x)H(2-x)Ti(3)O(7) NBs when Au nanoparticles of suitable amount were deposited on their surfaces. This improvement is due to the band offsets between Na(x)H(2-x)Ti(3)O(7) and Au, which may promote charge carrier separation to favor the photocatalysis. The recycling test reveals that Au-decorated Na(x)H(2-x)Ti(3)O(7) NBs could be promisingly utilized in the long-term course of photocatalysis. Furthermore, the result of performance evaluation under natural sunlight shows that the current Au-decorated Na(x)H(2-x)Ti(3)O(7) NBs can be used as highly efficient photocatalysts which may practically harvest energy from sunlight. (C) 2010 Elsevier B.V. All rights reserved.
Au-decorated NaxH2-xTi3O7 nanobelts exhibiting remarkable photocatalytic properties under visible-light illumination
(2010-06-18)
Pu, Ying-Chih
;
Chen, Yu-Chih
;
Hsu, Yung-Jung
;
材料科學與工程學系
;
Department of Materials Science and Engineering
We demonstrated for the first time that Na-intercalated H2Ti3O7 (NaxH2-xTi3O7) NBs, prepared in the typical alkaline hydrothermal process, can effectively absorb visible light to carry out photocatalytic reactions. With the capability of effective light absorption in visible range, NaxH2-xTi3O7 NBs performed much better in the photoclegradation of thionine than the other three counterpart products including H2Ti3O7, mixed Na2Ti6O13/TiO2 and anatase TiO2 under visible-light irradiations. As compared to the relevant commercial products like P-25 TiO2 and Na2Ti3O7 powders, the as-synthesized NaxH2-xTi3O7 NBs exhibited superior photocatalytic efficiency under UV illumination, demonstrating their potential as an efficient photocatalyst in relevant redox reactions. A further enhancement in the photocatalytic activity can be achieved for NaxH2-xTi3O7 NBs when Au nanoparticles of suitable amount were deposited on their surfaces. This improvement is due to the band offsets between NaxH2-xTi3O7 and Au, which may promote charge carrier separation to favor the photocatalysis. The recycling test reveals that Au-decorated NaxH2-xTi3O7 NBs could be promisingly utilized in the long-term course of photocatalysis. Furthermore, the result of performance evaluation under natural sunlight shows that the current Au-decorated NaxH2-xTi3O7 NBs can be used as highly efficient photocatalysts which may practically harvest energy from sunlight. (C) 2010 Elsevier B.V. All rights reserved.
Simulating the dynamics of inextensible vesicles by the penalty immersed boundary method
(2010-06-20)
Kim, Yongsam
;
Lai, Ming-Chih
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數學建模與科學計算所(含中心)
;
Graduate Program of Mathematical Modeling and Scientific Computing, Department of Applied Mathematics
In this paper, we develop an immersed boundary (IB) method to simulate the dynamics of inextensible vesicles interacting with an incompressible fluid. In order to take into account the inextensibility constraint of the vesicle, the penalty immersed boundary (pIB) method is used to virtually decouple the fluid and vesicle dynamics. As numerical tests of our current pIB method, the dynamics of single and multiple inextensible vesicles under shear flows have been extensively explored, and compared with the previous literature. The method is also validated by a series of convergence study, which confirms its consistent first-order accuracy on the velocity field, the vesicle configuration, the vesicle area and the perimeter errors. In addition, the method is also applied to study a binary-component vesicle problem. (C) 2010 Elsevier Inc. All rights reserved.
Single stage transmission type broadband solar concentrator
(2010-06-21)
Wang, Chih-Ming
;
Huang, Hung-I
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Pan, J. W.
;
Kuo, Hung-Zen
;
Hong, Hwen-Fen
In this paper, a single stage solar cell concentrator is designed and discussed. The proposed concentrator consists of refraction prisms and total internal reflection prisms in the inner and outer areas, respectively. In order to compensate for dispersion, all odd zones gather the light onto the - D position, while all even zones gather the light onto the + D position. Finally, the hybrid concentrator achieves optical efficiency of 89.8% for normally incident light without an antireflection coating. An acceptance angle of +/- 0.78 degrees at 1dB loss is achieved without using additional secondary optics. In addition, the fabrication tolerance is also analyzed. (C) 2010 Optical Society of America
Novel yellowish-orange Sr8Al12O24S2:Eu2+ phosphor for application in blue light-emitting diode based white LED
(2010-06-21)
Kuo, Te-Wen
;
Huang, Chien-Hao
;
Chen, Teng-Ming
;
應用化學系
;
Department of Applied Chemistry
A new yellowish-orange phosphor, Sr8Al12O24S2:Eu2+, was synthesized by the solid-state method and its photoluminescence properties were investigated by excitation and emission spectra. Its excitation band is extending from 400-500 nm, which is adaptable to the emission band of blue LED chips (450-470 nm). Upon the excitation of 450 nm light, the phosphor exhibits strong yellowish-orange emission centered at 605 nm with good thermal stability. A white light-emitting diode (W-LED) that consists of a blue LED chip (similar to 470 nm) and a (Sr0.92Eu0.08)(8)Al12O24S2 phosphor is demonstrated. The CIE 1931 chromaticity coordinates (x, y) are (0.34, 0.25), the correlated color temperature (CCT) is 4300 K, and the luminous efficacy of this W-LED is 14.2 1m/W at room temperature and with a forward-bias current of 400 mA. (C) 2010 Optical Society of America
轉型演員　運動明星受考驗
(2010-06-21)
李志豪
;
Department of Communication and Technology
;
傳播與科技學系
僅以本文紀念筆者最愛的摔角手，巨石強森（The Rock），曾經的人民的冠軍。用「紀念」兩個字或許太過駭人聽聞，這位仁兄還沒有去天堂與其他名人堂等級的摔角手齊聚一堂。不過自從他在2001年上映的《神鬼傳奇二》客串魔蠍大帝之後，本職的摔角手工作有一陣沒一陣，大部分的時間都在忙碌著電影的拍攝，直到2004年巨石強森離開擂台之後就再也沒有打過一場正式比賽了。
社區處遇孩子另一個家
(2010-06-21)
鄭琬馨
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Department of Communication and Technology
;
傳播與科技學系
位於彰化的兒童學苑，是專門安置輕微犯罪兒童的機構，這些個案因為原生家庭無法好好照顧他們，導致產生偏差行為，並且無法進行後續的教育和輔導。兒童學苑和其他類似的安置機構，就是為了讓這些犯罪兒童有一個家的感覺，透過社工和專業人士的輔導和陪伴，以教養代替懲罰的方式，希望能讓這些兒童獲得正確的價值觀。
Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs
(2010-06-21)
Huang, Hsin-Tao
;
Tsai, Chuang-Chuang
;
Huang, Yi-Pai
;
光電工程學系
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顯示科技研究所
This work presents a novel "pulsed spray (PS)" process for the coating of yellow YAG:Ce3+ phosphor on blue InGaN-based light emitting diodes (LEDs). To coat a phosphor layer of high quality on an LED chip surface, the PS approach is used and studied because of the uniform color distribution, providing a wide range of color temperatures. This PS coating approach applies phosphor by exploiting mechanical principles without risk of chemical pollution. Additionally, it can be applied to wire-bonded LEDs and an array of LED chips on a substrate to fabricate a large-area, planar illumination system of high optical quality, which is easy to manufacture. (C) 2010 Optical Society of America
CD音質歌手 CHIA
(2010-06-21)
許庭瑜
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Department of Communication and Technology
;
傳播與科技學系
NICO界中的CD音質歌手CHIA
交大e-News第073期
(2010-06-21)
Secretariat
;
國立交通大學秘書室
Novel yellowish-orange Sr(8)Al(12)O(24)S(2):Eu(2+) phosphor for application in blue light-emitting diode based white LED
(2010-06-21)
Kuo, Te-Wen
;
Huang, Chien-Hao
;
Chen, Teng-Ming
;
應用化學系
;
Department of Applied Chemistry
A new yellowish-orange phosphor, Sr(8)Al(12)O(24)S(2):Eu(2+), was synthesized by the solid-state method and its photoluminescence properties were investigated by excitation and emission spectra. Its excitation band is extending from 400-500 nm, which is adaptable to the emission band of blue LED chips (450-470 nm). Upon the excitation of 450 nm light, the phosphor exhibits strong yellowish-orange emission centered at 605 nm with good thermal stability. A white light-emitting diode (W-LED) that consists of a blue LED chip (similar to 470 nm) and a (Sr(0.92)Eu(0.08))(8)Al(12)O(24)S(2) phosphor is demonstrated. The CIE 1931 chromaticity coordinates (x, y) are (0.34, 0.25), the correlated color temperature (CCT) is 4300 K, and the luminous efficacy of this W-LED is 14.2 1m/W at room temperature and with a forward-bias current of 400 mA. (C) 2010 Optical Society of America
一百級的最後喀報之路
(2010-06-21)
蔡欣穎
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Department of Communication and Technology
;
傳播與科技學系
親愛的同胞們，我們終於離開喀報，和多多公主的懷抱了。
Integration of Non-Lambertian LED and Reflective Optical Element as Efficient Street Lamp
(2010-06-21)
Pan, Jui-Wen
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Tu, Sheng-Han
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Sun, Wen-Shing
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Wang, Chih-Ming
;
Chang, Jenq-Yang
A cost effictive, high throughput, and high yield method for the increase of street lamp potency was proposed in this paper. We integrated the imprinting technology and the reflective optical element to obtain a street lamp with high illumination efficiency and without glare effect. The imprinting technique can increase the light extraction efficiency and modulate the intensity distribution in the chip level. The non-Lambertian light source was achieved by using imprinting technique. The compact reflective optical element was added to efficiently suppress the emitting light intensity with small emitting angle for the uniform of illumination intensity and excluded the light with high emitting angle for the prevention of glare. Compared to the conventional street lamp, the novel design has 40% enhancement in illumination intensity, the uniform illumination and the glare effect elimination. (C) 2010 Optical Society of America
落跑猴
(2010-06-21)
羅兆恆
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Department of Communication and Technology
;
傳播與科技學系
關不住的跑猴「寶寶」
生物科技熱　人才過剩憂
(2010-06-21)
郭伯宇
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Department of Communication and Technology
;
傳播與科技學系
生物科技熱　人才過剩憂
燦爛千陽社會福利基金會
(2010-06-21)
張國鍵
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Department of Communication and Technology
;
傳播與科技學系
曹慶先生退休後，全力投入慈善機構的建設，在他不斷地努力籌辦之下，至今已經創立三家公益基金會，並幫助無數的病患或弱勢者。這三家基金會為，提供植物人完善照顧的創世基金會；為年邁獨居、失能、失智老人提供幫助的華山基金會；以及秉持著「防飢」、「防寒」、「防病」的理念所創立的人安基金會，並幫助街友重新踏入社會。
志工服務耕耘你的心
(2010-06-21)
陳宣聿
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Department of Communication and Technology
;
傳播與科技學系
「耕心」二字，指的是耕耘自己的心靈，成立於二ＯＯ八年的耕心社，是大同大學唯一的服務性社團，除了定期舉辦社團活動、捐募物資給需要的人們之外，耕心社的同學們也和懷慈老人養護所合作，平均一學期一到兩次，號召同學們前往懷慈養護所做志工，利用一整天的時間陪伴養護所的爺爺奶奶們，參與服務的大學生也從中得到許多未曾擁有的經驗。