Browsing by Issue Date, starting with "2007-11-19"

Now showing 1 - 20 of 58673

Pi-shape gate polycrystalline silicon thin-film transistor for nonvolatile memory applications
(2007-11-19)
Chen, Shih-Ching
;
Chang, Ting-Chang
;
Liu, Po-Tsun
;
Wu, Yung-Chun
;
Ko, Chin-Cheng
In this work, we studied a pi-shape gate polycrystalline silicon thin-film transistor (poly-Si TFT) with silicon-oxide-nitride-oxide-silicon (SONOS) layers and nanowire channels for the application of electric driver and nonvolatile memory. The proposed pi-gate TFT-SONOS has superior transfer characteristics and its output characteristic also exhibits the high driving current and the suppression of the kink effect. For memory application, the device can provide high program/erase efficiency and large threshold voltage shift under adequate bias operation. The enhanced performance for the pi-gate TFT-SONOS is attributed to the larger effective channel width and the number of channel corners. (C) American Institute of Physics.
Effect of UV curing on electrical properties of a UV-Curable co-Polyacrylate/Silica nanocomposite as a transparent encapsulation resin for device packaging
(2007-11-20)
Wang, Yu-Young
;
Hsieh, Tsung-Eong
;
材料科學與工程學系
;
Department of Materials Science and Engineering
Electrical properties of UV-curable co-polyacrylate/silica nanocomposite resins prepared via sol-gel process for device encapsulation were investigated. It was found that, by appropriate UV curing process and the formation of nanoscale silica particles finely dispersed in the resin matrix, the leakage current density of the nanocomposite resin films decreases from 235 to 1.3 nA (.) cm(-2) at the applied electrical field of 10 kV (.) cm(-1). The silica nanoparticles also restricted the motions of polar functional groups in organic matrix that the nanocomposite films with satisfactory dielectric properties [dielectric constant (epsilon) = 3.93 and tangent loss (tan delta = 0.0472) could be obtained. Chemical structure analyses revealed that excessive UV curing results in photooxidation and/or photodegradation in resin samples, leading to the polar groups and ionic/radical segments in organic matrix as well as the -Si-O-Si- structure in the vicinity of silica nanoparticles. These organic/inorganic functional groups generated more permeation paths for charge carrier migration and hence deteriorated the electrical properties of the nanocomposite samples. Though post-baking treatment at 80 degrees C for 1 h followed by UV curing improved the rigidity of the resin sample, it brought the polar functional groups closer to each other and similarly degraded electrical properties of the nanocomposite resins.
交大e-News第014期
(2007-11-20)
Secretariat
;
國立交通大學秘書室
超半球固態浸沒式透鏡之製法
(2007-11-21)
徐文祥
;
孫翊庭
本發明係提供一種超半球固態浸沒式透鏡之製法，係於一基材上塗佈正光阻層後，以第一、二片光罩進行第一、二次曝光，可經由第一次足量曝光在正光阻層上產生之圖案來進行對準，使得第二片光罩上之曝光圖案可經由對準轉移到正光阻層上的特定區域，接著進行回流(reflow)，即可形成超半球固態浸沒式透鏡(SSIL)；可使整個製程容易而不需昂貴或是複雜的設備即可完成，且方便利用後續的半導體製程額外製作其他光學元件；與已製作之超半球固態浸沒式透鏡(SSIL)作整合，所以不需組裝即可製作具有功能性的元件，進而達到易於製作，且應用面廣泛易與其他光學元件作整合，利於批次大量生產。
Glass transition-related thermorheological complexity in polystyrene melts
(2007-11-21)
Lin, Y-H
;
應用化學系
;
Department of Applied Chemistry
The relaxation-modulus G( t) functional forms covering the whole time range are given by incorporating a stretched exponential for the structural-(glassy-) relaxation process into the extended reptation theory ( ERT; for entangled systems) or the Rouse theory ( for entanglement-free systems). The creep compliance J ( t) curves of two entangled ( A and B) and one entanglement-free ( C) polystyrene samples ( Plazek) as well as the viscoelastic spectra G*(omega) of four entanglement-free polystyrene samples ( Inoue et al) have been quantitatively analyzed in terms of the given G( t) functional forms. In such quantitatively successful analyses, the ERT or the Rouse theory works as the frame of reference in both the line shape and timescale. The thermorheological complexity in the J ( t) curves is explained naturally and precisely by the temperature dependence of the energetic-interaction-derived structural relaxation being stronger than that of the entropic ERT or Rouse dynamics in a simple way. Structural-relaxation times tau(S)(=18s' K') of all the studied samples are equally well separated into two decoupled quantities: the structural- growth parameter s' and the frictional factor K' ( for the Rouse Mooney or Rouse modes of motion). The separation is fundamentally a clean-cut process: s' is determined entirely by the line shape of J ( t) or G*(omega) while K' is calculated from the timescale shifting factor obtained from the superposition of the calculated curves onto the measured. The glassy- relaxation strength A(G)(f) and the stretching parameter beta extracted from the J ( t) and G*(omega) results over the glassy- relaxation region are in good agreement. The glass-transition temperature T-g is defined as corresponding to tau(S) = 1000 s for all the studied samples. The tau(S), s' and K' data points of samples A, B and C extracted from their J ( t) curves individually fall closely on the same curves when expressed as a function of Delta T = T - T-g, revealing a T-g-related universality within the polystyrene system, entangled or not. The revealed universality confirms the previously derived conclusion that the ERT and the Rouse theory have the same footing at the Rouse-segmental level. Representing important physical features of the universality, the length-scale of the structural relaxation increases as Delta T diminishes and reaches the value of similar to 3 nm at Delta T = 0 ( or at T-g) for all three samples, A, B and C. Extracted from the G*(omega) results, the tau(S), s' and K' data of samples with molecular weights just below and well below entanglement molecular weight M-e ( 13 500) are found to deviate more from the respective universal curves with decreasing molecular weight. Deviation is estimated to start occurring at M-w = 12 000.
A novel fluorene-triphenylamine hybrid that is a highly efficient host material for blue-, green-, and red-light-emitting electrophosphorescent devices
(2007-11-23)
Shih, Ping-I
;
Chien, Chen-Han
;
Wu, Tang-Iy
;
Shu, Ching-Fong
;
應用化學系
TFTPA (tris[4-(9-phenylfluoren-9-yl)phenyl]amine), a novel host material that contains a triphenylamine core and three 9-phenyl-9-fluorenyl peripheries, was effectively synthesized through a Friedel-Crafts-type substitution reaction. Owing to the presence of its sterically bulky 9-phenyl-9-fluorenyl groups, TFTPA exhibits a high glass transition temperature (186 degrees C) and is morphologically and electrochemically stable. In addition, as demonstrated from atomic force microscopy measurements, the aggregation of the triplet iridium dopant is significantly diminished in the TFTPA host, resulting in a highly efficient full-color phosphorescence. The performance of TFTPA-based devices is far superior to those of the corresponding mCP- or CBP-based devices, particularly in blue- and red-emitting electrophosphorescent device systems. The efficiency of the FIrpic-based blue-emitting device reached 12% (26 cd A(-1)) and 18 lm W-1 at a practical brightness of 100 cd m(-2); the Ir(piq)(2)acac-based red-emitting device exhibited an extremely low turn-on voltage (2.6 V) and a threefold enhancement in device efficiency (9.0 lm W-1) relative to those of reference devices based on the CBP host material.
大學生打工新觀點
(2007-11-25)
楊宇軒
;
Department of Communication and Technology
;
傳播與科技學系
70年代出生的那一代往往被社會稱為草莓族，因其外表雖光鮮亮麗卻吃不了苦、受不了挫折。然而我們身邊卻有一些大學生顛覆了社會傳統的印象，他們在忙碌的學業下自己賺錢生活，為家庭減輕不少的負擔。
從台啤看台灣籃球文化
(2007-11-25)
汪承漢
;
Department of Communication and Technology
;
傳播與科技學系
從台啤看台灣籃球文化
熊寶貝　單純的搖滾爆發
(2007-11-25)
張雅雯
;
Department of Communication and Technology
;
傳播與科技學系
介紹熊寶貝樂團
蔡健雅《Good-bye & Hello》
(2007-11-25)
彭敬雅
;
Department of Communication and Technology
;
傳播與科技學系
睽違一年，歌壇創作才女蔡健雅於今年10月發行全新專輯《Good-bye & Hello》。2007年對蔡健雅來說充滿轉折：離開合作10年的經紀公司，投身新東家〈亞神音樂〉；開始一段刻骨銘心的感情，卻又倏地結束。帶著移動經歷的感觸，在《Good-bye & Hello》中，蔡健雅使用同樣內斂卻又動人的嗓音，揮別過去，唱出新的自己。
一探「環校越野機車道」
(2007-11-25)
賴奕如
;
Department of Communication and Technology
;
傳播與科技學系
從北大門到南大門，整修前跟整修後的機車道
無與倫比的<<蘇打綠>>
(2007-11-25)
姜建亨
;
Department of Communication and Technology
;
傳播與科技學系
蘇打綠前陣子才辦過成功的演唱會想探討一下他們從地下團崛起以及發展到至今的經過以及介紹"無與倫比的美麗"這張專輯的歌曲
第八期總編輯的話
(2007-11-25)
鄧詠兒
;
Department of Communication and Technology
;
傳播與科技學系
總編輯的話
《另一個衣櫃：雙性戀者的生命故事與認同》
(2007-11-25)
鄭瑋津
;
Department of Communication and Technology
;
傳播與科技學系
一本關於雙性戀的書，16年後才在台灣出版，一群被異性戀及同性戀孤立的性別社群，勾起怎麼樣的感動與認同？
陳群典遊遍五大洲的旅遊經
(2007-11-25)
黃夙蓮
;
Department of Communication and Technology
;
傳播與科技學系
念研究所期間，出過很多國家，也當過一陣子專職導遊。
《崇拜》令人掉淚的情歌
(2007-11-25)
林憶宏
;
Department of Communication and Technology
;
傳播與科技學系
梁靜茹的新專輯的個人感想
謝宗穎：I want to be better！
(2007-11-25)
薛怡凡
;
Department of Communication and Technology
;
傳播與科技學系
交大生科系大三的謝宗穎，擁有精采的過去，卻擁抱現在單純卻務實的生活。
蘇打綠《無與倫比的美麗》
(2007-11-25)
姚翔
;
Department of Communication and Technology
;
傳播與科技學系
蘇打綠新專輯
校隊書卷─張瑋宬
(2007-11-25)
陳惠玟
;
Department of Communication and Technology
;
傳播與科技學系
誰說四肢發達，頭腦就會簡單？拋開這些世俗的既定印象，國立交通大學資工系98級張瑋宬要告訴大家，他就是可以樣樣都拿第一。
瑪莉蓮曼森
(2007-11-25)
鍾瑄
;
Department of Communication and Technology
;
傳播與科技學系
瑪莉蓮曼森（Marilyn Manson），全美家長最懼怕的樂團，他們將自己塑造成象徵惡魔的公羊頭、無血色的蒼白肌膚、血盆大口和全白的眼珠，把美國文化避諱的所有意象通通搬上舞台，毫不忌諱地扮演基督教最恐懼的撒旦形象。