Browsing by Issue Date, starting with "2012-02-16"

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具容忍變異字元線驅動抑制機制之隨機存取記憶體
(2012-02-16)
莊景德
;
林宜緯
;
陳家政
;
石維強
本發明提供一種隨機存取記憶體，其包括複數個字元線驅動器、至少一第一追隨電晶體與第二追隨電晶體。各字元線驅動器有一輸入端以接收一解碼訊號、一電源端以接受一工作電壓、與一驅動端以驅動一字元線。一實施例中，第一追隨電晶體有兩通道端，分別耦接字元線驅動器的驅動端與第二追隨電晶體的一個通道端。其中，第一追隨電晶體的電子特性追隨字元線驅動器中驅動電晶體的電子特性，第二追隨電晶體的電子特性追隨各記憶單元中閘通電晶體的電子特性。
液晶透鏡及其製造方法
(2012-02-16)
廖凌嶢
;
黃乙白
;
林裕閔
;
謝漢萍
本發明係揭露一種液晶透鏡及其製造方法，其包含一第一基板、一第一電極、一第一配向層、一液晶層、一第二配向層、一電場均化層、至少一第二電極、一第三電極及一第二基板。第一電極設於第一基板上，第一配向層設於第一電極上，液晶層設於第一配向層上，第二配向層設於液晶層上，電場均化層設於第二配向層上，第二電極及第三電極設於電場均化層上，且第三電極設於第二電極之間。第二基板則設於第二電極及第三電極上。其中第三電極係配合第二電極產生電場梯度，並藉由電場均化層均勻影響液晶層，使液晶達到快速聚焦的效果。
軟性微系統結構及其製造方法
(2012-02-16)
趙子元
;
梁家瑋
;
鄭裕庭
一種將多晶片/單晶片整合於軟基材上形成軟性微系統結構的製造方法，該方法包含低溫覆晶製程以及晶圓級的半導體製程。在本發明中，晶片係利用低溫覆晶製作出金屬對金屬之連接結構，以使晶片整合於軟性基板上；另外，更利用蝕刻位於軟性基板下之犧牲層，使軟性基板可由操作基板上分離。因此，本發明係使用標準化製程將晶片整合於軟基材上，且不需使用特殊的材料或製程，故具有製程簡單、成本低的優點。
Time-Resolved Spectroscopy of Ultrafast Photoisomerization of Octopus Rhodopsin under Photoexcitation
(2012-02-16)
Yabushita, Atsushi
;
Kobayashi, Takayoshi
;
Tsuda, Motoyuki
;
電子物理學系
;
Department of Electrophysics
A primary process in vision is the cis-trans photoisomerization of a chromophore of rhodopsin, called retinal. In the present work, we have performed ultrafast time-resolved spectroscopy of octopus rhodopsin. using a sub-5-fs pulse laser. In comparison with our previous study on bacteriorhodopsin, we found that octopus rhodopsin follows similar dynamics after photoexcitation but with different time constants. Spectrogram analysis showed that a C=N stretching mode appeared directly after photoexcitation. After reaching the conical intersection region at 80 fs, the overlapping hydrogen out-of-plane and in-plane C=C-H modes emerged as distinct peaks at similar to 200 fs, finishing a rapid relaxation along the coordinate related with these modes. The intensities of these peaks and a C=C stretching mode were found to be modulated at a period of similar to 500 fs, reflecting torsional motion around the C=C double bond before thermalization with the distribution of structural variations in the all-trans structure in configuration space.
Deciphering the Preference and Predicting the Viability of Circular Permutations in Proteins
(2012-02-16)
Lo, Wei-Cheng
;
Dai, Tian
;
Liu, Yen-Yi
;
Wang, Li-Fen
;
Hwang, Jenn-Kang
Circular permutation (CP) refers to situations in which the termini of a protein are relocated to other positions in the structure. CP occurs naturally and has been artificially created to study protein function, stability and folding. Recently CP is increasingly applied to engineer enzyme structure and function, and to create bifunctional fusion proteins unachievable by tandem fusion. CP is a complicated and expensive technique. An intrinsic difficulty in its application lies in the fact that not every position in a protein is amenable for creating a viable permutant. To examine the preferences of CP and develop CP viability prediction methods, we carried out comprehensive analyses of the sequence, structural, and dynamical properties of known CP sites using a variety of statistics and simulation methods, such as the bootstrap aggregating, permutation test and molecular dynamics simulations. CP particularly favors Gly, Pro, Asp and Asn. Positions preferred by CP lie within coils, loops, turns, and at residues that are exposed to solvent, weakly hydrogen-bonded, environmentally unpacked, or flexible. Disfavored positions include Cys, bulky hydrophobic residues, and residues located within helices or near the protein's core. These results fostered the development of an effective viable CP site prediction system, which combined four machine learning methods, e. g., artificial neural networks, the support vector machine, a random forest, and a hierarchical feature integration procedure developed in this work. As assessed by using the hydrofolate reductase dataset as the independent evaluation dataset, this prediction system achieved an AUC of 0.9. Large-scale predictions have been performed for nine thousand representative protein structures; several new potential applications of CP were thus identified. Many unreported preferences of CP are revealed in this study. The developed system is the best CP viability prediction method currently available. This work will facilitate the application of CP in research and biotechnology.
燃料電池、具有面穿透導電性之板體及其製作方法
(2012-02-16)
許富明
;
陳仁浩
本發明係揭露一種燃料電池、具有面穿透導電性之板體及其製作方法。其中具有面穿透導電性之板體包含一基板及複數個線狀導體，各線狀導體係鍍覆一層金屬材料，並受一磁場的導引而以垂直於基板表面的方式，設置於基板中。另外，基板係為環氧樹脂，線狀導體為碳纖維，而金屬材料則為鐵、鈷或鎳等磁性材料。
Quenching effects of gold nanoparticles in nanocomposites formed in water-soluble conjugated polymer nanoreactors
(2012-02-17)
Yang, Po-Jen
;
Chu, Hsuan-Chih
;
Lee, Yu-Hsien
;
Kobayashi, Takayoshi
;
Chen, Te-Cheng
In this paper we describe the first example of the in situ synthesis of gold nanoparticles (AuNPs) in the presence of a water-soluble conjugated polyfluorene (NPF) presenting pendent ammonium groups, with the polymer acting as an aqueous surfactant and providing fluorescent nanoreactors. Using this approach, we produced well-dispersed NPF-AuNP nanocomposites without the need for any additional reducing agents. The photoluminescence emission intensity of NPF-AuNP nanocomposite solution was quenched to a greater extent upon increasing the concentration of AuNPs, presumably through energy transfer or electron transfer from the fluorescent polymer to the metal nanoparticles. Through variations in the degrees of protonation and deprotonation of the amino groups of NPF at different values of pH, we found that the extent of quenching of AuNPs in NPF-AuNP nanocomposite solutions was directly related to the adsorption and desorption behavior of NPF on the metal surfaces. Transmission electron microscopy revealed that the greatest aggregation of AuNPs in the nanocomposite solution occurred at pH 3. suggesting that the ammonium groups (RNMe2 at pH 8.5; RNMe2H+ at pH 3) of the polymer side chains adsorbed onto the AuNP surfaces under these conditions. Distinct time-resolved fluorescence signals of the AuNP-quenched NPF polymers at different values of pH confirmed the interactions between these species. (C) 2012 Elsevier Ltd. All rights reserved.
障害乗越え補助装置
(2012-02-17)
鄭璧瑩
;
黄健寶
白色発光蛍光体およびその発光装置
(2012-02-17)
陳登銘
;
張峻魁
交大e-News第112期
(2012-02-20)
Secretariat
;
國立交通大學秘書室
具環境光感測功能之液晶顯示器及其方法
(2012-02-21)
戴亞翔
;
何漢清
;
鄭枷彬
本發明係揭露一種具環境光感測功能之液晶顯示器及其方法。本方法首先將一電容耦接於一薄膜電晶體之源極，然後計算電容之電位因電荷減少而產生轉態所需要之轉態時間，再根據轉態時間來計算環境光的強度。本發明另揭露一種環境光感測電路，包括一薄膜電晶體、一電容及一讀出開關。當環境光變化時，薄膜電晶體之漏電流亦隨之變化，而使電容之電位轉態所需要的轉態時間產生變化，讀出開關便將電容之電位傳遞到資料讀出線，因而從轉態時間中計算出環境光的強度。本發明之液晶顯示器，則包括複數個電容、複數個讀出開關及一處理模組。
數位式快速鎖定頻率合成器
(2012-02-21)
陳巍仁
;
楊松諭
本發明主要為一種數位式鎖相迴路頻率合成裝置，具有高速鎖定以及低相位雜訊特性。其中鎖相迴路由一相位偵測器、可控制振盪器、自動動態調整迴路增益之迴路濾波器、回授相位積分電路、參考相位積分電路所組成。在迴路鎖定過程中，透過自動動態調整迴路增益之迴路濾波器，偵測積分電路輸出資訊以及相位偵測電路輸出資訊，動態的調整迴路濾波器中直饋路徑以及積分路徑的增益，使迴路鎖定速度加快。本案並提出一種高速計數器的電路，透過一組非同步計數器、資料擷取暫存器與取樣相位產生器，達成高速低功率之計數器。
No more CKY two-forms in the NHEK
(2012-02-21)
Mitsuka, Yoshihiro
;
Moutsopoulos, George
;
電子物理學系
;
Department of Electrophysics
We show that in the near-horizon limit of a Kerr-NUT-AdS black hole, the space of conformal Killing-Yano two-forms does not enhance and remains of dimension 2. The same holds for an analogous polar limit in the case of extremal NUT charge. We also derive the conformal Killing-Yano p-form equation for any background in an arbitrary dimension in the form of parallel transport.
微型光學讀取裝置
(2012-02-21)
陳政寰
;
蘇雅妮
本發明係揭露一種微型光學讀取裝置，用以提供一入射光至一光學記錄媒體，並接收來自此光學記錄媒體之反射光，此微型光學讀取裝置包含：一光源產生元件以產生此入射光；一軸向式分光元件用以根據入射光及反射光之極化方向，使此入射光完全穿透，並使此反射光發生偏折；一光偏極元件係設置於軸向式分光元件及光學記錄媒體之間，用以改變入射光及來自光學記錄媒體之反射光之極化方向；一像散式反射鏡係接收並像散聚焦來自軸向式分光元件之反射光，且進行反射；一光感測元件用以接收來自像散式反射鏡之反射光，並將其轉換為相應之電訊號。
Generalized path integral method for Elliott-Yafet spin relaxations in quantum wells and narrow wires
(2012-02-22)
Tsai, Jengjan
;
Chang, Cheng-Hung
;
物理研究所
;
Institute of Physics
We generalized the semiclassical path integral method originally used in the D'yakonov-Perel' mechanism to study the spin relaxation of the Elliott-Yafet mechanism in low-dimensional systems. In quantum wells, the spin properties calculated by this method confirmed the experimental results. In two-dimensional narrow wires, size and impurity effects on the Elliott-Yafet relaxation were predicted, including the wire-width-dependent relaxation time, the polarization evolution on the sample boundaries, and the relaxation behavior during the diffusive-ballistic transition. These properties were compared with those of the D'yakonov-Perel' relaxation calculated under similar conditions. For ballistic narrow wires, we derived an exact relation between the Elliott-Yafet relaxation time and the wire width, which confirmed the above simulations.
ADDRESS GENERATION APPARATUS AND METHOD FOR QUADRATIC PERMUTATION POLYNOMIAL INTERLEAVER
(2012-02-23)
LEE SHUENN-GI
;
WANG CHUNG HSUAN
;
SHEEN WERN-HO
An address generation apparatus for quadratic permutation polynomial (QPP) interleaver receives several configurable parameters and uses a plurality of QPP units to compute and outputs a plurality of interleaving addresses according to a QPP function Π(i)=(f1i+f2i2) mod k, where f1 and f2 are QPP coefficients, k is information block length of an input sequence, 0≦i≦k−1, and mod is a modulus operation. Each of the plurality of QPP units is a parallel computation unit, and outputs in parallel a corresponding group of interleaver addresses, where Π(i) is also a ith interleaving address generated by the apparatus.
DRY ELECTRODE FOR BIOMEDICAL SIGNAL MEASURING SENSOR
(2012-02-23)
LIN CHIN-TENG
;
LIAO LUN-DE
A dry electrode for biomedical signal measuring sensor includes a conductive sponge, a conductive fabric, and a thin metal film. The conductive fabric covers the whole conductive sponge, and the thin metal film is disposed on one face of the conductive fabric opposite to the conductive sponge. When using the dry electrode in measuring biomedical signal, it is not necessary to apply a conductive gel on a patient's skin, at where the biomedical signal is to be measured. Without the need of applying the conductive gel, the dry electrode is readily for measuring biomedical signal at any time and can be conveniently used in measuring signal over a long period of time without the problem of an attenuated signal due to gradually becoming dried conductive gel.
DATA-AWARE DYNAMIC SUPPLY RANDOM ACCESS MEMORY
(2012-02-23)
Chuang Ching-Te
;
Yang Hao-I
;
Lin Yi-Wei
;
Hwang Wei
;
Shih Wei-Chiang
A Random Access Memory (RAM) with a plurality of cells is provided. In an embodiment, the cells of a same column are coupled to a same pair of bit-lines and are associated to a same power controller. Each cell has two inverters; the power controller has two power-switches. For the cells of the same column, the two power-switches respectively perform independent supply voltage controls for the two inverters in each cell according to data-in voltages of the bit-lines during Write operation.
Extended object tunneling: Current-carrying states of Abrikosov vortices in a superconductor with artificial nanobarriers
(2012-02-24)
Rosenstein, B.
;
Shapiro, I.
;
Shapiro, B. Ya.
;
Li, Dingping
;
Frydman, A.
We consider the structure and dynamics of two-dimensional fluxons created by a magnetic field in a type-II superconductor film with critical temperature T-1 in the presence of nanostripes of material with a higher critical temperature T-2. The width of the stripes is of the order of the coherence length xi. Such a stripe plays the role of a potential barrier for vortices. When subjected to the current J parallel to the stripe, vortices move toward the barrier. Below the critical current J(c), the flux flow is effectively halted by the barrier, while above J(c), flux penetrates the stripe and passes the barrier. The mechanism of the barrier penetration ("soliton tunneling" occurs even at zero temperature) is rather unusual: the vortices adjust their shape, and upon passing the barrier, they shrink their cores. The critical current and the I-V curves are calculated numerically and analytically using variational approach.
サスペンデッドナノワイヤチャネルを有するトランジスタ構造とその製造方法
(2012-02-24)
林鴻志
;
蘇俊榮
;
徐行徽
;
李冠樟