Browsing by Issue Date, starting with "2010-03-05"

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交大e-News第066期
(2010-03-05)
Secretariat
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國立交通大學秘書室
In Vivo Resonance Raman Detection of Ferrous Cytochrome c from Mitochondria of Single Living Yeast Cells
(2010-03-05)
Onogi, Chikao
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Hamaguchi, Hiro-o
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應用化學系
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應用化學系分子科學碩博班
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Department of Applied Chemistry
Raman spectra of mitochondria in living budding yeast cells (zygote of Saccharonlyces cerevisiae and Saccharomyces bayanus) have been recorded with 532 nm excitation. Strong and sharp Raman bands are observed at 1584, 1315, 1129, 749, and 601 cm(-1), in addition to known phospholipid bands. These Raman bands are not observed in the corresponding Raman spectrum of mitochondria obtained with 632.8 nm excitation. Their peak positions and relative intensities agree excellently with the reported resonance-enhanced Raman bands of ferrous cylochrome c, which has a Q-band absorption at 520 nm. We have thus succeeded in detecting ferrous cytochrome c, one of the key intermediates in the electron-transport chain in mitochondria, in vivo without any pretreatment. In vivo resonance Raman detection of ferrous cytochrome c opens up new possibilities for real-time and quantitative tracing of respiration dynamics in mitochondria in a single living cell.
Deep Red Emission of Ca(19)Ce(PO(4))(14):Mn(2+) Phosphor for Fluorescent Lamp and PDP Applications
(2010-03-05)
Kuo, Te-Wen
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Chung, Hsiu-Pei
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Chen, Teng-Ming
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應用化學系
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Department of Applied Chemistry
The unprecedented deep red-emitting phosphor, Ca(19)Ce(PO(4))(14):Mn(2+), has been fabricated by a convenient solid-state method. A strong red emission centered at 637 nm corresponding to the 4T1(4G) -> 6A1(6S) transition of Mn(2+) is observed under 130-300 nm excitation. The chromaticity coordinates of optimized phosphor were found to be (0.69, 0.29). In addition, we have also made an attempt to observe strong red emission displayed by this phosphor for use as coating material on compact fluorescent lamps (CFLs). It is a promising candidate for application in CFLs as a red-emitting color converter.
Simulation of characteristic variation in 16 nm gate FinFET devices due to intrinsic parameter fluctuations
(2010-03-05)
Li, Yiming
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Hwang, Chih-Hong
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Han, Ming-Hung
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傳播研究所
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電機工程學系
High-kappa/metal-gate and vertical channel transistors are well-known solutions to continue the device scaling. This work extensively explores the physics and mechanism of the intrinsic parameter fluctuations in nanoscale fin-type field-effect transistors by using an experimentally validated three-dimensional quantum-corrected device simulation. The dominance fluctuation sources in threshold voltage, gate capacitance and cutoff frequency have been found. The emerging fluctuation source, workfunction fluctuation, shows significant impacts on DC characteristics; however, its impact is reduced in AC characteristics due to the screening effect of the inversion layer. Additionally, the channel discrete dopant may enhance the electric field and therefore make the averaged cutoff frequency of fluctuated devices larger than the nominal value of cutoff frequency.
Electronic and Vibrational Coherence Dynamics in a Cyanine Dye Studied Using a Few-Cycle Pulsed Laser
(2010-03-05)
Wang, Ying
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Kobayashi, Takayoshi
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電子物理學系
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Department of Electrophysics
We report the relaxation times of electronic and vibrational coherence in the cyanine dye 1,1',3,3,3',3'-hexamethyl-4,4',5,5'-dibenzo-2,2'-indotricarbocyanine, measured using a 7.1 fs pulsed laser. The vibrational phase relaxation times are found to be between 380 and 680 fs in the ground and lowest excited singlet states. The vibrational dephasing times of the 294, 446, and 736 cm(-1) modes are relatively long among the six modes associated with excited-state wave packets. The slower relaxations are explained in terms of a coupled triplet of vibrational modes, which preserves coherence by forming a tightly bound group to satisfy the condition of circa conservation of vibrational energy. Using data from the negative-time range (i.e., when the probe pulse precedes the pump pulse), the electronic phase relaxation time is found to be 31 +/- 1 fs. The dynamic vibrational mode in the excited state (1171 cm(-1)), detected in the positive-time range, is also studied from the negative-time traces under the same experimental conditions.
Deep Red Emission of Ca19Ce(PO4)(14):Mn2+ Phosphor for Fluorescent Lamp and PDP Applications
(2010-03-05)
Kuo, Te-Wen
;
Chung, Hsiu-Pei
;
Chen, Teng-Ming
;
應用化學系
;
Department of Applied Chemistry
The unprecedented deep red-emitting phosphor, Ca19Ce(PO4)(14):Mn2+, has been fabricated by a convenient solid-state method. A strong red emission centered at 637 nm corresponding to the 4T1(4G) -> 6A1(6S) transition of Mn2+ is observed under 130-300 nm excitation. The chromaticity coordinates of optimized phosphor were found to be (0.69, 0.29). In addition, we have also made an attempt to observe strong red emission displayed by this phosphor for use as coating material on compact fluorescent lamps (CFLs). It is a promising candidate for application in CFLs as a red-emitting color converter.
A New Poly(amide urethane) Solid State Electrolyte Containing Supramolecular Structure
(2010-03-09)
Yen, Ying-Chieh
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Cheng, Chih-Chia
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Kuo, Shiao-Wei
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Chang, Feng-Chih
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應用化學系
Transient to digital converters
(2010-03-09)
Ker
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Ming-Dou
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Yen
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Cheng-Cheng
;
Liao
A digital converter including a first adjustment unit and a first transient detection unit. The first adjustment unit adjusts amplitude of an electrostatic discharge (ESD) pulse to generate a first adjustment signal when an ESD event occurs in a first power line and a second power line is at a complementary level. The first transient detection unit generates a first digital code according to the first adjustment signal.
Neutral Dissociation of Superexcited Oxygen Molecules in Intense Laser Fields
(2010-03-11)
Song, Di
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Azarm, Ali
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Kamali, Yousef
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Liu, Kai
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Xia, Andong
Superexcited States (SESs) of oxygen molecules and their neutral dissociation processes have been studied both experimentally and theoretically using intense femtosecond laser. We find that at the laser Intensity of similar to 2 x 10(14) W/cm(2), ultrashort laser pulse causes neutral dissociation of oxygen molecule by way of SESs. The dissociation products are the excited neutral oxygen atoms, which are observed that fluorescence,Spectroscopy. Laser power dependence of the fluorescence intensity shows that each molecule effectively absorbs ill average of tell laser photons. The total energy absorbed is sufficient to stimulate the molecule to many of the SESs The effect is equivalent to single photon excitation in the extreme-ultraviolet (XUV) region by synchrotron radiation (SR). Morse potential energy curves (PECs). are constructed for the SESs of O(2) molecules. In light of the PECs, predissociation mechanism is proposed for the neutral dissociation. Quasi-classical trajectroy (QCT) calculations show that the predissociation time is as short as 100 fs, which is consistent with our experimental measurement using ultrafast pump-probe technique
內儲存無關項控制之階層式搜尋線
(2010-03-11)
張書瑋
;
張銘宏
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黃威
;
黃柏蒼
本發明提供一種內儲存無關項控制之階層式搜尋線，其係在內容可定址記憶體中區分出複數區塊，每一區塊包含複數區域搜尋線、一總體搜尋線、一緩衝器及一記憶單元，將資料依照前置內容的長短依序儲存於區塊中，其中具有最長前置內容者儲存於最底部，並以其內無關項之狀態值做為緩衝器之控制訊號，控制總體搜尋線尚之資料是否被傳遞到區域搜尋線，而區域搜尋線再將值傳送到記憶單元中。本發明無須複雜的控制電路及額外之儲存單元，且由於控制訊號係直接取自於無關項之狀態值，故可有效降低搜尋線之功率消耗而不增加搜尋延遲時間。
PHPIT and fabrication thereof
(2010-03-11)
Wei, Kung-Hwa
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Chang, Yao-Te
The present invention provides PHPIT and fabrication thereof. PHPIT has a side-chain-tethered with hexylphenanthrenyl-imidazole polythiophene. The visible light absorption of the PHPIT/PCBM blend is enhanced by the presence of the electron-withdrawing hexylphenanthrenyl-imidazole. The PHPIT/PCBM blend experienced more-balanced electron and hole mobilities and solvability.
低密度高強度高韌性合金材料
(2010-03-11)
劉增豐
;
李堅瑋
本發明係關於一種低密度、高強度、高韌性之合金材料及其製法。該合金材料其主要包含15~33重量百分比之錳、6~10重量百分比之鋁、0.6~1.2重量百分比之碳、0.1~1.0重量百分比之矽及其餘比例以鐵為基材之合金材料，其具有6.6~6.9 g/cm3的密度、25~70%的延伸率或100~190ksi的抗拉強度等極佳的性質，故使得該合金材料可達到高強度、低密度、高延展性及優異表面性質之高爾夫桿頭設計目的，且該合金材料更可降低高爾夫桿頭在電鍍過程中所產生的孔蝕孔洞及缺陷的發生，因此大幅降低產品的不良率及成本。
RESOURCE ALLOCATION METHOD FOR MULTI-USERS MULTIPLE INPUT MULTIPLE OUTPUT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM AND APPARAUS THEREOF
(2010-03-11)
Wang, Li-Chun
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Yeh, Chu-Jung
The present invention is direct to the resource allocation method for MU-MIMO-OFDM system and the apparatus thereof. The MU-MIMO-OFDM system has a plurality of users and a plurality of sub-channels. The sub-channels are assigned to the users according to the capacity ratio constraints and a scheduling rule, and then the power of the user is determined according to the limit power of the MU-MIMO-OFDM system. Wherein the values of power of the sub-channels assigned to the user are the same, the scheduling rule may be Max-Min or Max Sum-Rate rule, and the allocation of the sub-channels may be user-oriented or sub-channel oriented.
VOLTAGE-CONTROLLED OSCILLATOR
(2010-03-11)
Chen, Wei-Zen
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Wu, Chung-Yu
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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.
Nonadiabatic Response Model of Laser-Induced Ultrafast pi-Electron Rotations in Chiral Aromatic Molecules
(2010-03-12)
Kanno, Manabu
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Kono, Hirohiko
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Fujimura, Yuichi
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Lin, Sheng H.
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應用化學系
We theoretically investigated the nonadiabatic couplings between optically induced pi-electron rotations and molecular vibrations in a chiral aromatic molecule irradiated by a nonhelical, linearly polarized laser pulse. The results of wave packet dynamics simulation show that the vibrational amplitudes strongly depend on the initial rotation direction, clockwise or counterclockwise, which is controlled by the polarization direction of the incident pulse. This suggests that attosecond pi-electron rotations can be observed by spectroscopic detection of femtosecond molecular vibrations.
《我不是連續殺人魔》
(2010-03-14)
陳明鈺
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Department of Communication and Technology
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傳播與科技學系
沉迷於連續殺人魔事件的約翰，從小知道自己不同於周遭所有人。他生活中的唯一樂趣，來自於母親與阿姨共同經營的葬儀社幫忙，他不斷的隱藏跟壓抑自己所有可能傷害人的想法，但最近發生的殺人魔事件讓他心裡的怪物逐漸的被釋放...
《醫魂》病房中的人文精神
(2010-03-14)
黃艾如
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Department of Communication and Technology
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傳播與科技學系
「醫學是種不確定的藝術，因為每個人都帶著自己謎團而來，尋求解答。」這是目前擔任耶魯大學醫學院外科臨床教授的許耳文‧努蘭，在他去年年底最新出版的作品《醫魂──努蘭的醫學故事集》提到，也揭示了這位今年八十歲的老醫生，對醫學與生命的想法。
島內出走　熱血單車行　　
(2010-03-14)
溫苔詠
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Department of Communication and Technology
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傳播與科技學系
古人云：「讀萬卷書，行萬里路」強調人們要多外出以便拓展自己的視野。而現代的交通又比古代發達許多，跟以前比起來，古諺已經不再是那麼難實踐的一句話。時代在變，人們不只比以前更忙碌，同時出現了更多旅行的機會。如果說身體沒有食物的補充就等於沒有能量的來源，那麼旅行便是充實我們內涵的重要食物之一。
總編輯的話
(2010-03-14)
宋宜玲
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Department of Communication and Technology
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傳播與科技學系
總編輯的話
保育人輓歌《灰熊人》
(2010-03-14)
徐念慈
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Department of Communication and Technology
;
傳播與科技學系
2003年的秋天，知名保育人士提姆崔德威，死了。死於他一生保護的最愛－灰熊。他死狀慘烈，屍體被灰熊瘋狂啃食，甚至連他的女友愛咪‧胡根也同時慘死於熊爪。諷刺的是，他們死前近乎來自地獄的的哀鳴與尖叫，全被他們用來記錄灰熊作息的錄影機錄下。