Browsing by Issue Date, starting with "2010-03-22"

Now showing 1 - 20 of 46643

Room-temperature operation type-II GaSb/GaAs quantum-dot infrared light-emitting diode
(2010-03-22)
Lin, Shih-Yen
;
Tseng, Chi-Che
;
Lin, Wei-Hsun
;
Mai, Shu-Cheng
;
Wu, Shung-Yi
A GaSb/GaAs quantum-dot light-emitting diode (QD LED) with a single GaSb QD layer is investigated in this paper. The room-temperature photoluminescence peak blueshift with increasing excitation power densities suggests a type-II alignment of the GaSb/GaAs heterostructures. Significant electroluminescence (EL) is observed for the device under forward biases, which suggests that pronounced dipole transitions occur at the GaSb/GaAs interfaces. With increasing forward biases, the observed EL peak blueshift confirms that the origin of luminescence is from the type-II GaSb/GaAs QD structures. A model is established to explain the operation mechanisms of the type-II QD LED.
Colossal electroresistance and colossal magnetoresistance in spinel multiferroic CdCr(2)S(4)
(2010-03-22)
Sun, C. P.
;
Huang, C. L.
;
Lin, C. C.
;
Her, J. L.
;
Ho, C. J.
Colossal magnetoresistance (CMR) and colossal electroresistance (CER) induced by the electric field in spinel multiferroic CdCr(2)S(4) are reported. It is found that a metal-insulator transition in CdCr(2)S(4) is triggered by the electrical field. In magnetic fields, the resistivity rho of CdCr(2)S(4) responds similarly to that of CMR manganites. Combing previous reports, these findings make CdCr(2)S(4) the unique compound to possess all four properties of the colossal magnetocapacitive, colossal electrocapacitive, CER, and CMR. The present results open a new venue for searching new materials to show CMR by tuning electric and magnetic fields.
Ab initio chemical kinetics for the reactions of N(2) with singlet and triplet C(2)O radicals
(2010-03-22)
Zhu, R. S.
;
Xu, S. C.
;
Lin, M. C.
;
交大名義發表
;
National Chiao Tung University
The possible energy pathways for the reactions of N(2) with singlet and tripled C(2)O have been investigated at the CCSD(T)/6-311+G(3df)//B3LYP/6-311+G(3df) level of theory. Our results show that the rate-controlling transition states for the formation of (3)CNN + CO, NCO + CN and (3)NCN + CO through triplet surface have 36.2, 57.7 and 60.5 kcal/mol barriers relative to the reactants (3)C(2)O + N(2). Formation of (1)CNN + CO and (1)NCN + CO via the singlet surface needs to overcome 43.7 and 66.9 kcal/mol barriers. The dominant products are (1,3)CNN + CO and cyc-(1)NCN + CO, their rate constants in cm(3) molecule (1) s (1) can be presented as k(1) ((3)CNN + CO) = 3.5 x 10(-11) exp(-36.8 kcal/mol/RT), k(2) ((1)CNN + CO) <= 2.9 x 10(-12) exp(-33.2 kcal/mol/RT) and k(3) (cyc-(1)NCN + CO) = 6.86 x 10(-20)exp(-27.7 kcal/mol/RT), which are signi. cantly lower than those assumed in the literature. The rate constants for the formation of (3)NCN + CO and NCO + CN are too small to be important due to their high exit barriers. The predicted heats of reaction for formation of products NCO + CN, (3)CNN + CO and (3)NCN + CO are 45.9, 18.1 and -10.7 kcal/mol, which agree excellently with the experimental values, 45.8, 17.7 and -10.7 kcal/mol. Our results imply that the reaction of C(2)O with N2 cannot compete with the CH + N(2) reaction for prompt-NO formation in hydrocarbon combustion. (C) 2010 Elsevier B. V. All rights reserved.
Ab initio chemical kinetics for the reactions of N-2 with singlet and triplet C2O radicals
(2010-03-22)
Zhu, R. S.
;
Xu, S. C.
;
Lin, M. C.
;
交大名義發表
;
National Chiao Tung University
The possible energy pathways for the reactions of N-2 with singlet and tripled C2O have been investigated at the CCSD(T)/6-311+G(3df)//B3LYP/6-311+G(3df) level of theory. Our results show that the rate-controlling transition states for the formation of (CNN)-C-3 + CO, NCO + CN and (NCN)-N-3 + CO through triplet surface have 36.2, 57.7 and 60.5 kcal/mol barriers relative to the reactants (C2O)-C-3 + N-2. Formation of (CNN)-C-1 + CO and (NCN)-N-1 + CO via the singlet surface needs to overcome 43.7 and 66.9 kcal/mol barriers. The dominant products are (CNN)-C-1,3 + CO and cyc-(NCN)-N-1 + CO, their rate constants in cm(3) molecule (1) s (1) can be presented as k(1) ((CNN)-C-3 + CO) = 3.5 x 10(-11) exp(-36.8 kcal/mol/RT), k(2) ((CNN)-C-1 + CO) <= 2.9 x 10(-12) exp(-33.2 kcal/mol/RT) and k(3) (cyc-(NCN)-N-1 + CO) = 6.86 x 10(-20)exp(-27.7 kcal/mol/RT), which are signi. cantly lower than those assumed in the literature. The rate constants for the formation of (NCN)-N-3 + CO and NCO + CN are too small to be important due to their high exit barriers. The predicted heats of reaction for formation of products NCO + CN, (CNN)-C-3 + CO and (NCN)-N-3 + CO are 45.9, 18.1 and -10.7 kcal/mol, which agree excellently with the experimental values, 45.8, 17.7 and -10.7 kcal/mol. Our results imply that the reaction of C2O with N2 cannot compete with the CH + N-2 reaction for prompt-NO formation in hydrocarbon combustion. (C) 2010 Elsevier B. V. All rights reserved.
Colossal electroresistance and colossal magnetoresistance in spinel multiferroic CdCr2S4
(2010-03-22)
Sun, C. P.
;
Huang, C. L.
;
Lin, C. C.
;
Her, J. L.
;
Ho, C. J.
Colossal magnetoresistance (CMR) and colossal electroresistance (CER) induced by the electric field in spinel multiferroic CdCr2S4 are reported. It is found that a metal-insulator transition in CdCr2S4 is triggered by the electrical field. In magnetic fields, the resistivity rho of CdCr2S4 responds similarly to that of CMR manganites. Combing previous reports, these findings make CdCr2S4 the unique compound to possess all four properties of the colossal magnetocapacitive, colossal electrocapacitive, CER, and CMR. The present results open a new venue for searching new materials to show CMR by tuning electric and magnetic fields.
Wavelength-multiplex and space-multiplex holographic storage device
(2010-03-25)
Su, Wei-Chia
;
Chen, Yeh-Hung
;
Chung, Te-Yuan
The present invention discloses a wavelength-multiplex and space-multiplex holographic storage device, which comprises a storage medium, a plurality of signal light beams and at least one reference light beam. The signal light beams have different wavelengths and illuminate the storage medium. The reference light beam illuminates the storage medium and interferes with the signal light beams to form a plurality of interference patterns. The interference patterns are respectively stored on different-depth storage layers of the storage medium. The present invention not only has a high access rate but also has a large storage capacity.
Electrical stimulation system and method for generating virtual channels
(2010-03-25)
Choi, Charles Tak Ming
;
Hsu, Chen Hua
;
Lee, Yeng Ting
Electrical stimulation system and method for generating virtual channels are disclosed. The electrical stimulation system comprises: an electrode controller, a carrier, a plurality of electrode units, and a buffer layer. The electrode units are disposed on the carrier, and each of the electrode units are electrically connected to the electrode controller independently. Besides, the electrode units and the carrier are covered with the buffer layer. When the electrode controller receive a control signal and drive the corresponding electrode units, the electrical currents output from the corresponding electrode units can electrically interfere with each other to generate a virtual channel between the corresponding electrode units.
SENSING ELEMENT, MANUFACTURING METHOD THEREOF, AND BIOLOGICAL DETECTION SYSTEM EMPLOYING SUCH SENSING ELEMENT
(2010-03-25)
Sheu, Jeng-Tzong
;
Chen, Chen-Chia
;
Li, Yaw-Kuen
;
Chang, Ko-Shing
A sensing element includes a field-effect transistor (FET) with an ultra-thin channel, a reference electrode, a first and a second passivation layer, and a microchannel. The first and the second passivation layer enclose a first and a second portion of the FET, respectively. The microchannel is bonded to the first and the second passivation layer, such that the microchannel is extended across the channel of the ultra-thin channel FET. The ultra-thin channel has a chemically or physically modified surface. When an analyte to be tested passes through the microchannel and is in contact with the modified surface of the ultra-thin channel, it results in changes in the conductance of the ultra-thin channel FET. Trace detection may be conducted on the analyte by observing changes in the conductance. A method for manufacturing the sensing element and a biological detection system employing the sensing element are also provided.
インテリジェント走行支援システム
(2010-03-25)
▲呉▼▲びん▼飛
;
陳昭栄
;
彭信元
;
陳盈翰
;
林▲うん▼欣
【課題】携帯端末に適用するインテリジェント走行支援システムを提供する。【解決手段】レーン逸脱検出、荷物紛失検出、走行状況下での前方物体検出、走行状況下での側方物体検出、及び走行状況下での後方物体検出を含む、複数の安全モードで検出でき、また、異なるモジュールからの検出結果に従い警告を発することができる。最後に、異なるモジュールからの検出結果に従い、リアルタイム画像を保存でき、その後関連情報を、他の場所にリアルタイムで通知するために、ＧＰＳシステム及びデジタル地図からの情報と合致させて、送信できる。【選択図】図１
Adjustable optical signal delay module and method thereof
(2010-03-25)
Chen, Jye Hong
;
Kao, Wei-Che
;
Peng, Peng-Chun
;
Lin, Chun-Ting
;
Wu, Fang Ming
The present invention relates to an adjustable optical signal delay module, particularly to a module, which adjusts power of an amplified spontaneous emission generated by a semiconductor optical amplifier and reversely feeds the adjusted amplified spontaneous emission back to the semiconductor optical amplifier to vary a group refractive index of the semiconductor optical amplifier and delay the timing of an optical signal, whereby the present invention can replace the pump laser conventionally required by a CPO mechanism. In the present invention, the feedback optical loop comprises a variable optical attenuator, an optical filter, and optical circulators. An user can control the delay timing of optical signals via adjusting optical power in the feedback optical loop. The present invention can decrease the fabrication cost of an optical signal delay module and reduce the volume thereof.
Complexity of cis-regulatory organization of six3a during forebrain and eye development in zebrafish
(2010-03-26)
Chao, Chung-Hao
;
Wang, Horng-Dar
;
Yuh, Chiou-Hwa
;
生物科技學系
;
Department of Biological Science and Technology
Background: Six3a belongs to the SIX family of homeodomain proteins and is expressed in the most anterior neural plate at the beginning of neurogenesis in various species. Though the function of Six3a as a crucial regulator of eye and forebrain development has been thoroughly investigated, the transcriptional regulation of six3a is not well understood. Results: To elucidate the transcriptional regulation of six3a, we performed an in vivo reporter assay. Alignment of the 21-kb region surrounding the zebrafish six3a gene with the analogous region from different species identified several conserved non-coding modules. Transgenesis in zebrafish identified two enhancer elements and one suppressor. The D module drives the GFP reporter in the forebrain and eyes at an early stage, while the A module is responsible for the later expression. The A module also works as a repressor suppressing ectopic expression from the D module. Mutational analysis further minimized the A module to four highly conserved elements and the D module to three elements. Using electrophoresis mobility shift assays, we also provided evidence for the presence of DNA-binding proteins in embryonic nuclear extracts. The transcription factors that may occupy those highly conserved elements were also predicted. Conclusion: This study provides a comprehensive view of six3a transcription regulation during brain and eye development and offers an opportunity to establish the gene regulatory networks underlying neurogenesis in zebrafish.
Mr.妥瑞　討人厭的朋友
(2010-03-28)
宋宜玲
;
Department of Communication and Technology
;
傳播與科技學系
如果人生可以重來，我還是不想要這個朋友。
真正的珍惜
(2010-03-28)
吳奕樺
;
Department of Communication and Technology
;
傳播與科技學系
小時候，對於眼睛看到的東西，都充滿強烈的好奇心，隨心所欲又任意妄為，長大後才發現，以前的自己，幼稚的荒謬又好笑。
這條文化創意的漫漫長路
(2010-03-28)
林忻
;
Department of Communication and Technology
;
傳播與科技學系
文化創意產業發展法正式在年初通過，對於台灣的創意市場而言，無疑地是往前跨了一大步，然而許多先進國家近幾年來愈趨重視「文化創意產業」的概念，也是此立法背後的推力之一；台灣以往不論在文化或是創意方面，始終都沒有成為國家的重點發展項目，甚至在拼經濟的口號聲中，許多精神層面的建設，很容易被漠視與遺忘，這也導致台灣在文化創意產業的領域中沒辦法有所突破，而與許多國家出現相當程度的落差。
從鄉村到城市　家鄉變了？
(2010-03-28)
徐瑩峰
;
Department of Communication and Technology
;
傳播與科技學系
國小畢業以後，我離開了居住十三年的小鎮，賣掉了家傳的果園，像當時的多數人一樣，和兄弟一起前往充滿機會的台北。晃眼一過也五十多年了，隨著人生起落，家鄉、城市也都不一樣了。
熱情狂燃喜樂無敵
(2010-03-28)
鄭伊婷
;
Department of Communication and Technology
;
傳播與科技學系
小女子樂器癡癮發作每每都要狠削父母荷包一筆但就是喜歡 "無樂不學"
我願意為你歌唱
(2010-03-28)
許庭瑜
;
Department of Communication and Technology
;
傳播與科技學系
男孩希望有人能夠為他唱歌終於一位少女出現在男孩的面前
生命新思維死刑惹爭議
(2010-03-28)
林乃絹
;
Department of Communication and Technology
;
傳播與科技學系
死刑存廢經過多年以來爭論未果，近日更因前法務部長王清峰拒絕簽署死刑執行令而成為新聞焦點。一直以來，死刑制度的複雜層次缺乏嚴肅的正視，更缺乏必要的公共辯論，不但造成相關知識和資訊缺乏，深思熟慮的政策或替代措施也無從形成。四個專精於法學和社會學的學者，分別對此議題表達個人觀點，死刑存廢的抉擇，正考驗台灣司法與民眾的智慧。
《孩子的第一哩路》
(2010-03-28)
陳柏全
;
Department of Communication and Technology
;
傳播與科技學系
二○○六年，紙風車文教基金會執行長李永豐不願意見到台灣的小孩子，因為外在環境而有了欣賞藝術的差距，因此發願展開「紙風車３１９鄉村兒童藝術工程」，期望讓偏遠地區的小孩子，一樣能觀賞到國家劇院規格的兒童劇；每一個鄉鎮只需要募款到三十五萬，紙風車劇團就到這些地方免費招待演出，而《孩子的第一哩路》是紙風車劇團在演出第一百場之後所出的特輯，用以紀念這中間對活動辛苦付出的所有人。
從創作中找自己　林麗芳
(2010-03-28)
樂嘉妮
;
Department of Communication and Technology
;
傳播與科技學系
林麗芳的最新作品《我的母親》，入圍2009年的女性影展。林麗芳善於以簡單直述的手法記錄對象，將真實的鏡頭直接呈現給觀眾。發現自己渴望創作記錄片時，林麗芳三十七歲，他轉換跑道栽進記錄片的世界，因為只有這樣才能感受到生命中的光和熱。