Browsing by Issue Date, starting with "2011-12-05"

Now showing 1 - 20 of 39564

High-performance vertical polymer nanorod transistors based on air-stable conjugated polymer
(2011-12-05)
Chao, Yu-Chiang
;
Chung, Chin-Ho
;
Zan, Hsiao-Wen
;
Meng, Hsin-Fei
;
Ku, Ming-Che
A vertical polymer nanorod transistor was realized based on an air-stable poly[5,5'-bis(3-dodecyl-2-thienyl)-2,2'-bithiophene] with a high highest occupied molecular orbital energy level. The influence of the work function of the emitter on the performances of the space-charge-limited transistor was investigated. When MoO3/Al was used as the top emitter and indium tin oxide was used as the bottom collector, the operating voltage of 0.6 V, the on/off current ratio of 4 x 10(4), and the switching swing of 105 mV/decade were achieved. A low-power-consumption inverter was also demonstrated. (C) 2011 American Institute of Physics. [doi:10.1063/1.3668086]
Mg-induced terahertz transparency of indium nitride films
(2011-12-05)
Ahn, H.
;
Chia, J. -W.
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Lee, H. -M.
;
Hong, Y. -L.
;
Gwo, S.
Terahertz time-domain spectroscopy (THz-TDS) has been used to investigate electrical properties of Mg-doped indium nitride (InN). Mg-doping in InN was found to significantly increase terahertz transmittance. THz-TDS analysis based on the Drude model shows that this high transmittance from Mg-doped InN is mainly due to the reduction in mobility associated with ionized dopants. The Hall-effect-measured mobility is typically lower than the THz-TDS-measured mobility for the same samples. However, the results of both measurements have the same slope in the linear relation between mobility and density. By introducing a compensation ratio of similar to 0.2, an excellent agreement in mobilities of two methods is obtained. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3669538]
交大e-News第107期
(2011-12-05)
Secretariat
;
國立交通大學秘書室
Sensitivity evaluation of rhodamine B hydrazide towards nitric oxide and its application for macrophage cells imaging
(2011-12-05)
Wu, Chi-Ming
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Chen, Yen-Hao
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Dayananda, Kasala
;
Shiue, Tsun-Wei
;
Hung, Chen-Hsiung
A colorless and non-fluorescent rhodamine derivative, rhodamine B hydrazide (RH), is applied to detect nitric oxide and form fluorescent rhodamine B (RB). The reaction mechanism of RH with NO is proposed in this study. The probe shows good stability over a broad pH range (pH > 4). Furthermore, fluorescence intensity of RH displays an excellent linearity to the NO concentration and the detection limit is as low as 20 nM. A 1000-fold fluorescence turn-on from a dark background was observed. Moreover, the selectivity study indicated that the fluorescence intensity increasing in the presence of NO was significantly higher than those of other reactive oxygen/nitrogen species. In exogenously generated NO detection study, clear intracellular red fluorescence was observed in the presence of S-nitroso-N-acetyl-D,L-penicillamine (SNAP, a kind of NO releasing agent). In endogenously generated NO detection study, increasing incubation time of RH with lipopolysaccharied (LPS) pre-treated cells could obtain a highly fluorescent cell image. These cell imaging results demonstrated that RH can efficiently penetrate into Raw 264.7 cells and be used for detection of exogenously and endogenously generated nitric oxide. (C) 2011 Elsevier B.V. All rights reserved.
Voltage-controlled oscillator
(2011-12-06)
Chen Wei-Zen
;
Wu Chung-Yu
;
Yu Chi-Yao
A voltage-controlled oscillator comprises a variable inductor, a negative impedance circuit, an operating voltage source and a ground point. The variable inductor comprises a transformer and a transistor switch, the transformer comprising a primary side coil and a secondary side coil, the primary side coil comprising a first coil and a second coil, and the secondary side coil comprising a third coil and a fourth coil. The transistor switch is connected in parallel with the primary side coil to adjust an inductance value of the variable inductor based on a gate voltage. The negative impedance circuit is connected in parallel with the secondary side coil to compensate the power consumption of the voltage-controlled oscillator during oscillation. The operating voltage source is electrically connected between the third coil and the fourth coil, and the ground point is electrically connected between the first coil and the second coil.
Coherent tunable filter apparatus and wireless communication front-end circuit thereof
(2011-12-06)
Kuo Chien-Nan
;
Shih Horng-Yuan
;
Pang Yi-Hsin
A front-end circuit with coherent tunable filters is provided. The circuit includes a first filter, an amplifier, and a second filter. The amplifier is coupled to the first filter, and the second filter is coupled to the amplifier. Furthermore, the amplifier is placed between the first and second filters. The first filter has a first tunable intermediate frequency, and is used to filter a received signal. The amplifier is used to amplify the output of the first filter. The second filter has a second tunable intermediate frequency, and is used to filter the output of the amplifier. The first and second intermediate frequencies have a coherent-tuning relation with each other.
Method for forming an interfacial passivation layer on the Ge semiconductor
(2011-12-06)
Liu Po-Tsun
;
Huang Chen-Shuo
;
Huang Yi-Ling
;
Cheng Szu-Lin
;
Sze Simon M.
The invention discloses a method for forming an interfacial passivation layer on the Ge semiconductor. The supercritical CO2 fluids is used to form an interfacial passivation layer between Ge channel and gate insulator layer, and improve the dielectric characteristics of gate insulator after high-temperature thermal annealing process.
Dual-threshold-voltage two-port sub-threshold SRAM cell apparatus
(2011-12-06)
Chang Mu-Tien
;
Huang Po-Tsang
;
Hwang Wei
The invention relates to a dual-threshold-voltage two-port sub-threshold SRAM cell apparatus. The above-mentioned apparatus comprises a first inverter, a second inverter, an access transistor and a read buffer. The first inverter and the second inverter include a plurality of first operating elements and a plurality of second operating elements for storing data. The access transistor is coupled to the first inverter and the second inverter, wherein the first operating elements and the second operating elements are high threshold voltage operating elements and the access transistor is low threshold voltage operating transistor. The read buffer is used for performing a read operation.
静电放电防护装置及静电放电防护电路
(2011-12-07)
柯明道
;
许哲纶
;
陈稳义
;
周业宁
;
黄晔仁
本发明公开了一种静电放电防护装置及电路，包括衬底、第一井区、第二井区、第一、第二、第三及第四扩散区、本体、第一及第二栅极。衬底具有第一导电型。第一及第二井区具有第二导电型，并形成于衬底之中。第一扩散区具有第三导电型，并形成于第一井区之中。本体具有第一导电型，并形成于衬底、第一及第二井区之中。第二扩散区具有第三导电型，并形成于本体之中。第一栅极控制第一扩散区与本体的电连接。第三扩散区具有第四导电型，并形成于本体之中。第四扩散区具有第四导电型，并形成于第二井区之中。第二栅极控制第三与第四扩散区的电连接。本发明实施例的静电放电防护装置及电路，能够防止闩锁现象的发生，避免破坏集成电路。
SYSTEM AND METHOD OF TRANSMIT DIVERSITY FOR WIRELESS COMMUNICATIONS
(2011-12-08)
MA CHUN-YING
;
HUANG CHIA-CHI
A system and method of transmit diversity for wireless communication. The system includes a transmitting terminal having a plurality of transmission antennas and a receiving terminal having a plurality of receiving antennas. The method includes analyzing channel state information obtained by the transmitting terminal; selecting an antenna to be one in use from the receiving antennas; matching the selected antenna in use with the wireless signals that are to be transmitted; transmitting wireless signals that are matched to the receiving terminal for being calculated and determining the pre-selected antenna in use, thereby significantly reducing complexities of the receiving terminal.
A High-Pressure Study of the Effects of TiO(2) Nanoparticles on the Structural Organization of Ionic Liquids
(2011-12-08)
Chang, Hai-Chou
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Chang, Shu-Chieh
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Hung, Tzu-Chieh
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Jiang, Jyh-Chiang
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Kuo, Jer-Lai
The local structures between nano-TiO(2) and 1-ethyl-3-methylimidazolium trifluorornethanesulfonate (EMI(+)TFS(-) ) and 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BMI(+)TES(-)) were investigated using high-pressure infrared spectroscopy. No significant changes in C-H spectral features of EMI(+)TFS(-) were observed in the presence of nano-TiO(2) under ambient pressure. As the EMI(+)TES(-)/nano-TiO(2) mixture was compressed to 0.3 GPa, the imidazolium C-H absorptions became two sharp bands at 3108 and 3168 cm(-1), respectively, and the alkyl C-H stretching absorption exhibits a new band at 3010 cm(-1) associated with a weaker band at 3028 cm(-1). It appears that pressure stabilizes the isolated conformations due to pressure-enhanced imidazolium C-H-nano-TiO(2) interactions. Our results also reveal that alkyl C-H groups play non-negligible roles at the conditions of high pressures. The results of BMI(+)TFS(-)/nano-TiO(2) are remarkably different from what is revealed for EMI(+)TFS(-)/nano-TiO(2). The spectral features and band frequencies of BMI(+)TFS(-)/nano-TiO(2) are almost identical to those of pure BMI(+)TES(-) under various pressures. This study demonstrates that changes to the alkyl chain length of the cation could be made to control the order and strength of ionic liquid/nano-TiO(2) interactions.
AUTOMATIC PATENT TRANSACTION SYSTEM
(2011-12-08)
LEE Chen-Yi
;
Huang Ching-Yao
;
Chang Chih-Hua
;
Wu Chih-Wei
;
Wu I-Ju
The invention discloses an automatic patent transaction system. The invention comprises a patent database, a member database, a match computing device, a share computing device, a non-member database, and a licensing and transacting computing device. The operation method of the invention also comprises a method for the participation of member and non-member, and a method for the participation of member only. Thus, the invention is able to increase the trade efficiency of the patent and reduce the trade cost of the patent.
VIRTUAL CHANNEL PLATFORM
(2011-12-08)
FAN SHIH-KANG
;
CHEN WEN-JUNG
A virtual channel platform is disclosed. Said virtual channel platform comprises two spaced electrode plates, which can provide an electric field, and a voltage source electrically connected to the two electrode plates. Said plates define a virtual reservoir and a virtual channel. When the voltage source provides a voltage between the electrode plates, the electric field generates a force to drive a driven fluid streaming from the virtual reservoir to the virtual channel, allowing the virtual channel to be filled with the driven fluid fully.
A High-Pressure Study of the Effects of TiO2 Nanoparticles on the Structural Organization of Ionic Liquids
(2011-12-08)
Chang, Hai-Chou
;
Chang, Shu-Chieh
;
Hung, Tzu-Chieh
;
Jiang, Jyh-Chiang
;
Kuo, Jer-Lai
The local structures between nano-TiO2 and 1-ethyl-3-methylimidazolium trifluorornethanesulfonate (EMI+TFS- ) and 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BMI+TES-) were investigated using high-pressure infrared spectroscopy. No significant changes in C-H spectral features of EMI+TFS- were observed in the presence of nano-TiO2 under ambient pressure. As the EMI+TES-/nano-TiO2 mixture was compressed to 0.3 GPa, the imidazolium C-H absorptions became two sharp bands at 3108 and 3168 cm(-1), respectively, and the alkyl C-H stretching absorption exhibits a new band at 3010 cm(-1) associated with a weaker band at 3028 cm(-1). It appears that pressure stabilizes the isolated conformations due to pressure-enhanced imidazolium C-H-nano-TiO2 interactions. Our results also reveal that alkyl C-H groups play non-negligible roles at the conditions of high pressures. The results of BMI+TFS-/nano-TiO2 are remarkably different from what is revealed for EMI+TFS-/nano-TiO2. The spectral features and band frequencies of BMI+TFS-/nano-TiO2 are almost identical to those of pure BMI+TES- under various pressures. This study demonstrates that changes to the alkyl chain length of the cation could be made to control the order and strength of ionic liquid/nano-TiO2 interactions.
Excited State ab Initio and Franck-Condon Simulation of S(1) -> S(0) Fluorescence Excitation Spectra of p-, m-, and o-Difluorobenzenes
(2011-12-08)
Yang, Qianliu
;
He, Rongxing
;
Shen, Wei
;
Li, Huabing
;
Li, Ming
Although difluorobenzenes (DFBs) are well-known organic molecules to understand the electronic structure and spectroscopy of benzene and its derivatives, few theoretical investigations have been performed to simulate their fine spectra and assign their vibrational bands. In this work, the fluorescence excitation (FEX) spectra of the first excited singlet states for three DFBs molecules (para-, meta- and ortho-difluorobenzene) were simulated by the Franck-Condon calculations with the displaced harmonic oscillator approximation plus the distorted correction. The calculated results indicated that the spectral profiles of three DFBs are primarily described by the Franck-Condon progression of their totally symmetric vibrational modes. Specifically, it is found that modes v(3) and v(8) of para-DFB, v(8) and v(9) of meta-DFB, and ortho-DFB play the most important roles in the fluorescence spectra. By taking into account the contributions of the distorted effect, we could assign most of the dominant overtones from the nontotally symmetric vibrational modes, and the results agree well with the experimental assignments. Some inferred and unassigned vibrational transitions in experiment were confirmed according to the present calculated results. In addition, in the simulated fluorescence spectra, we tentatively assigned several combination bands with relative moderate intensity and weak vibrational lines which appeared in the experimental observations but the corresponding assignments were not given. The present work reproduced satisfactorily the experimental FEX spectra of p-, m-, and o-DFBs derivatives and provided a useful method to simulate the FEX spectra of dihalogenated benzene molecules.
Excited State ab Initio and Franck-Condon Simulation of S-1 -> S-0 Fluorescence Excitation Spectra of p-, m-, and o-Difluorobenzenes
(2011-12-08)
Yang, Qianliu
;
He, Rongxing
;
Shen, Wei
;
Li, Huabing
;
Li, Ming
Although difluorobenzenes (DFBs) are well-known organic molecules to understand the electronic structure and spectroscopy of benzene and its derivatives, few theoretical investigations have been performed to simulate their fine spectra and assign their vibrational bands. In this work, the fluorescence excitation (FEX) spectra of the first excited singlet states for three DFBs molecules (para-, meta- and ortho-difluorobenzene) were simulated by the Franck-Condon calculations with the displaced harmonic oscillator approximation plus the distorted correction. The calculated results indicated that the spectral profiles of three DFBs are primarily described by the Franck-Condon progression of their totally symmetric vibrational modes. Specifically, it is found that modes v(3) and v(8) of para-DFB, v(8) and v(9) of meta-DFB, and ortho-DFB play the most important roles in the fluorescence spectra. By taking into account the contributions of the distorted effect, we could assign most of the dominant overtones from the nontotally symmetric vibrational modes, and the results agree well with the experimental assignments. Some inferred and unassigned vibrational transitions in experiment were confirmed according to the present calculated results. In addition, in the simulated fluorescence spectra, we tentatively assigned several combination bands with relative moderate intensity and weak vibrational lines which appeared in the experimental observations but the corresponding assignments were not given. The present work reproduced satisfactorily the experimental FEX spectra of p-, m-, and o-DFBs derivatives and provided a useful method to simulate the FEX spectra of dihalogenated benzene molecules.
精彩校園　異國嘉年華
(2011-12-11)
許鈺煊
;
Department of Communication and Technology
;
傳播與科技學系
異國美食、文化、趣味遊戲！由十多個不同國家的同學共同擺攤的「異國嘉年華」在交大校園注入了不一樣的元素，也拉近了本地生與外籍生之間的距離。
我是男生　我是女生　
(2011-12-11)
洪欣慈
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Department of Communication and Technology
;
傳播與科技學系
電影《裝扮遊戲》中，導演用最率真的童年時期，給了劇中主角洛兒一個夏天的機會，讓她暫時扮演男生，但在外在性別的轉換過程中，心理上卻無法順利調適。以性別啟蒙為本片主軸，《裝扮遊戲》以溫暖的基調詮釋出了屬於小孩的敏感心思。
樂活生命　樂活新北
(2011-12-11)
楊雅涵
;
Department of Communication and Technology
;
傳播與科技學系
新北市文化局第一次主辦的2011年樂活浮洲藝術嘉年華，在12月的3~16號舉行了一系列的活動。為了帶動浮洲區的藝術文化產業，嘉年華結合了創意市集、手作工作坊以及新北市的表演團體，讓大家可以接觸美，自己創作藝術。
尋找一個　更好的世界
(2011-12-11)
楊佳靜
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Department of Communication and Technology
;
傳播與科技學系
人人渴望愛與和平的世界，但在面對充滿暴力及不公平的現實社會，是否真正還有能夠冷靜、以理性面對的人？哪裡才是真正更好的世界？