Browsing by Issue Date, starting with "2013-01-16"

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一種電子顯微鏡樣品盒
(2013-01-16)
陳智
;
杜經寧
本發明係有關於一種電子顯微鏡樣品盒，包括：一第一基板、一第二基板、一或以上之光電元件、及一金屬黏著層。該第一基板具有一第一表面、一第二表面、一第一凹槽、及一或以上之第一導孔，該第一導孔係貫穿第一基板。該第二基板具有一第三表面、一第四表面、及一第二凹槽。該光電元件係設置於第一基板及第二基板間。另外，該金屬黏著層，係設置於該第一基板與該第二基板間以形成一空間，使樣品容置於其中。此外，本發明更包括一或以上之栓塞，係可密封第一導孔，使本發明之樣品盒密封並以電子顯微鏡即時觀測。
具磁控制之奈米孔洞型藥物載體
(2013-01-16)
陳三元
;
陳柏溶
;
劉典謨
;
胡尚秀
本發明提供一種具磁控制之奈米孔洞型藥物載體，其利用一無機或有機之基材來裝載藥物，作為藥物載體，並使用具有磁敏感性的磁性奈米粒子包覆於基材表面，以將藥物封圍起來。本發明之具磁控制之奈米孔洞型藥物載體可利用一外部磁場訊號來控制磁性奈米粒子的移除率，以控制藥物釋放行為及釋放量。
一種電子顯微鏡樣品盒
(2013-01-16)
陳智
;
杜經寧
本發明係有關於一種電子顯微鏡樣品盒，包括：一第一基板、一第二基板、及一金屬黏著層。該第一基板具有一第一表面、一第二表面、一第一凹槽、及一或以上之第一導孔，該第一導孔係貫穿第一基板。該第二基板具有一第三表面、一第四表面、及一第二凹槽。另外，該金屬黏著層，係設置於該第一基板與該第二基板間以形成一空間，使樣品容置於其中，此外，本發明更包括一或以上之栓塞，係可密封第一導孔，使本發明之樣品盒密封並以電子顯微鏡即時觀測。
載藥型隱形眼鏡及其製備方法
(2013-01-16)
劉典謨
;
劉佩鈴
本發明係揭露一種載藥型隱形眼鏡及其製備方法，此載藥型隱形眼鏡具有一隱形眼鏡本體，隱形眼鏡本體至少包含有一雙性混成奈米載體，其上係載有藥物分子。本發明更藉由藥物分子之光或熱敏感性差異，以分別製作出兩種不同類型的包覆型及浸藥型之載藥型隱形眼鏡。本發明係利用具有良好藥物包覆能力和生物相容性極高之雙性混成奈米載體包覆藥物分子，達到藥物分子長期緩慢釋放至眼睛組織裡，使藥物之損失、對人體產生副作用機率降至最低，以達到醫療、保健目的者。
可消除雜音且增進語音辨識率之方法
(2013-01-16)
白明憲
;
劉孆婷
;
桂振益
;
徐偉智
一種可消除雜音且增進語音辨識率之方法，包括以下步驟：提供二個以上的麥克風，用以接收至少二麥克風訊號；將麥克風訊號利用快速傅立葉轉換至頻率域，以取得其中之語音訊號與雜音訊號；計算語音訊號與雜音訊號之夾角，並使用一相位差演算法，進一步找出一耳間時間差；依據該夾角計算出耳間時間差之一閥值；依據耳間時間差與其閥值，使用一遮蔽法則，以取得語音訊號並去除雜音訊號；以及將語音訊號利用一反快速傅立葉轉換暨疊加模組轉至時間域輸出，藉此去除聲源中的雜音部分，以增進語音品質。
基於擴增實境與雲端計算之應用程式執行方法與系統
(2013-01-16)
陳烈武
;
曾煜棋
;
彭昱豪
一種創新的應用程式執行方法與系統，可利用動態影像或靜態照片來讓使用者取得欲通訊/查詢對象之識別帳號並觸發特定程式/網頁功能的人性化介面。本發明讓使用者不必自行輸入欲通訊對象的識別帳號，如E-Mail位址、MSN識別、Facebook識別、FTP IP、甚至是關鍵字等，只需一指拖曳人臉到應用程式圖示/網頁圖示上或將該應用程式圖示/網頁圖示拖曳到該人臉上，即可輕鬆完成執行應用程式/網站功能的過程，有效地降低使用者操作複雜度，並提供簡易的應用軟體與網站服務操作方法。
光感測元件及其製備方法
(2013-01-16)
陳智
;
劉健民
;
曾院介
本發明係有關於一種光感測元件及其製備方法，本發明之光感測元件具有極大蕭特基接面且其包括：一第一導電層；複數金屬奈米線，該每一金屬奈米線之一端係與該第一導電層連接，且該每一金屬奈米線之表面係覆有一半導體層，該半導體層之厚度係為1nm-20nm；以及一第二導電層，係對應該第一導電層而配置，該複數金屬奈米線係配置於該第一導電層與該第二導電層之間，且該第二導電層與該複數金屬奈米線表面之半導體層接觸；其中，該光感測元件係用於感測波長10nm-400nm之紫外光。
Weak antilocalization in topological insulator Bi2Te3 microflakes
(2013-01-16)
Chiu, Shao-Pin
;
Lin, Juhn-Jong
;
電子物理學系
;
物理研究所
;
Department of Electrophysics
We have studied the carrier transport in two topological insulator (TI) Bi2Te3 microflakes between 0.3 and 10 K and under applied backgate voltages (V-BG). Logarithmic temperature dependent resistance corrections due to the two-dimensional electron-electron interaction effect in the presence of weak disorder were observed. The extracted Coulomb screening parameter is negative, which is in accord with the situation of strong spin-orbit scattering as is inherited in the TI materials. In particular, positive magnetoresistances (MRs) in the two-dimensional weak-antilocalization (WAL) effect were measured in low magnetic fields, which can be satisfactorily described by a multichannel-conduction model. Both at low temperatures of T < 1 K and under high positive VBG, signatures of the presence of two coherent conduction channels were observed, as indicated by an increase by a factor of approximate to 2 in the prefactor which characterizes the WAL MR magnitude. Our results are discussed in terms of the (likely) existence of the Dirac fermion surface states, in addition to the bulk states, in the three-dimensional TI Bi2Te3 material. DOI: 10.1103/PhysRevB.87.035122
Analysis of unequal error protection for LDPCA codes
(2013-01-17)
Sun, Y. -C.
;
Tsai, W. -J.
;
資訊工程學系
;
Department of Computer Science
Unequal error protection extensions of low density parity check accumulate (UEP-LDPCA) codes are discussed and several potential applications are proposed. Two UEP-LDPCA schemes are analysed and code parameters are optimised using a density evolution algorithm. Simulation results show that the extensions have the significant unequal error protection property. This activates new directions for existing applications.
Enhanced photoactivity of Cu-deposited titanate nanotubes for removal of bisphenol A
(2013-01-17)
Doong, Ruey-an
;
Chang, Sue-min
;
Tsai, Chia-wei
;
環境工程研究所
;
Institute of Environmental Engineering
One-dimensional nanotubes are promising nanostructured materials for a wide variety of environmental applications. In this study, the Cu-deposited titanate nanotubes (TNTs) were fabricated using an alkaline hydrothermal method at 150 degrees C and then 0.5-2 wt% Cu(II) ions were photodeposited onto the calcined TNTs at 500 degrees C for enhanced photodegradation of bisphenol A (BPA) under illumination of 365 nm UV light. The as-synthesized TNTs showed tubular structures with the outer diameter and inter-layer spacing of 7-10 and 0.8 nm, respectively. The X-ray absorption near-edge spectral results provided a strong support on the partially structural change from layered trititanate to anatase TiO2 through the distortion of octahedral TiO6 unit at 500 degrees C and the production of mixture of CuO and Cu2O after photodeposition of Cu ions, resulting in the formation of Cu-deposited TiO2/TNT nanocomposites to enhance the photocatalytic activity. A nearly complete removal of BPA by the Cu-deposited TiO2/TNTs was observed, and the pseudo-first-order rate constants (k(obs)) for BPA photodegradation by Cu-deposited TiO2/TNTs at pH 7.0 were 1.8-5.2 and 4.3-12.7 times higher than those of pure Degussa P25 and ST01 TiO2, respectively. In addition, the k(obs) for BPA photodegradation reached the maximum value of 0.253 +/- 0.032 min(-1) at 1 wt% Cu(II). The X-ray photoelectron spectra showed that the ratio of Cu2O to total Cu increased from 3.2% in the dark to 35.2% after illumination of 365 nm UV light for 5 min. In addition, electron paramagnetic resonance results indicated that the copper ions could serve as the electron mediators to prolong the retention time of photo-generated radicals, resulting in the enhancement of photodegradation efficiency and rate of BPA by Cu-deposited TiO2/TNTs. (C) 2012 Elsevier B.V. All rights reserved.
Neutral-Fragmentation Paths of Methane Induced by Intense Ultrashort IR Laser Pulses: Ab Initio Molecular Orbital Approach
(2013-01-17)
Koseki, Shiro
;
Shimakura, Noriyuki
;
Teranishi, Yoshiaki
;
Lin, Sheng Hsien
;
Fujimura, Yuichi
Instantaneous (laser-field-dependent) potential energy curves leading to neutral fragmentations of methane were calculated at several laser intensities from 1.4 x 10(13) to 1.2 x 10(14) W/cm(2) (from 1.0 x 10(10) to 3.0 X 10(10) V/m) using ab initio molecular orbital (MO) methods to validate the observation of neutral fragmentations induced by intense femtosecond IR pulses (Kong et al. J. Chem. Phys. 2006, 125, 133320). Two fragmentation paths, CH2 + 2H and CH2 + H-2, in T-1(2) superexcited states that are located in the energy range of 12-16 eV were considered as the reaction paths because these states are responsible for Jahn-Teller distortion opening up reaction paths during ultrashort pulses. As field intensity increased, the low-lying excited (1)A(1) states originated from the Jahn-Teller T-1(2) states were substantially stabilized along the neutral-fragment path CH4 -> CH2 + 2H and were located below the ionization threshold. On the other hand, the low-lying excited B-1(1) states, which also originate from the Jahn-Teller T-1(2) states, were embedded on the ionized state along the dissociation path to CH2 + H-2. This indicates that ionic fragments, rather than neutral ones, are produced along the CH2 + H-2 path. The computational results support neutral fragmentations through superexcited states proposed by Kong et al.
Enhanced Magnetic Anisotropy via Quasi-Molecular Magnet at Organic-Ferromagnetic Contact
(2013-01-17)
Hsu, Yao-Jane
;
Lai, Yu-Ling
;
Chen, Chih-Han
;
Lin, Ying-Chang
;
Chien, Hsiu-Yun
To realize the origin of efficient spin injection at organic-ferromagnetic contact in organic spintronics, we have implemented the formation of quasi-molecular magnet via surface restructuring of a strong organic acceptor, tetrafluoro-tetracyanoquinodimethane (F4-TCNQ), in contact with ferromagnetic cobalt. Our results demonstrate a spin-polarized F4-TCNQ layer and a remarkably enhanced magnetic anisotropy of the Co film. The novel magnetic properties are contributed from strong magnetic coupling caused by the molecular restructuring that displays an angular anchoring conformation of CN and upwardly protruding fluorine atoms. We conclude that the pi bonds of CN, instead of the lone-pair electrons of N atoms, contribute to the hybridization-induced magnetic coupling between CN and Co and generate a superior magnetic order on the surface.
Observation of disordered wave functions with conical second-harmonic generation and verification of transition from extended to prelocalized states in weak localization
(2013-01-18)
Lin, Y. C.
;
Tuan, P. H.
;
Yu, Y. T.
;
Liang, H. C.
;
Su, K. W.
We experimentally acquire the disordered wave functions from the conical second-harmonic generation to explore the variation of weak localization from extended to prelocalized states. We numerically verify that the experimental density distributions with different extents of weak localization can be excellently analyzed with a reduced version of the nonlinear sigma model (RV-NLS model). Moreover, we demonstrate that the chi-square distributions with fractional degrees of freedom are practically equivalent to the density distributions of the RV-NLS model. Our finding indicates that the concept of fractional degrees of freedom can be applied to the statistical properties of disordered wave functions. DOI: 10.1103/PhysRevB.87.045117
NEUTRINO FLAVOR RATIOS ON THE EARTH FOR DECAY AND OSCILLATION SCENARIOS
(2013-01-20)
Liu, T. C.
;
Lai, Kwang-Chang
;
Lin, Guey-Lin
;
物理研究所
;
Institute of Physics
Due to flavor transition mechanisms in neutrino propagations, both neutrino oscillation and decay, neutrinos flavor ratio at astrophysical sources can quite different from observed ratios on the Earth.(1) We use the recent global fitting result of the mixing angle values(2) to determine the allowed neutrino flavor ratios on the Earth for standard neutrino oscillation and general decay mechanisms. In this analysis, four types of the neutrino decay mechanisms can be distinguished from the oscillation case easily with arbitrary initial neutrino flavor ratio and the other four types of neutrino decay mechanisms can be distinguished from the oscillation case with the specified source. The rest types of neutrino decays strongly overlap with the oscillation and cannot be identified.
行走輔助系統
(2013-01-21)
宋開泰
;
江信毅
;
黃科棟
本發明係揭露一種行走輔助系統，其包含運動模組、電流感測模組及中央控制模組。其中，各運動模組包含全向輪、馬達、軸編碼器及控制器，馬達係連接全向輪並驅動全向輪進行全向移動，軸編碼器則連接馬達並擷取其轉速而對應產生轉速值，控制器則連接軸編碼器及馬達，並接收轉速值及控制馬達。電流感測模組係連接馬達並感測馬達之電流而對應產生電流值。中央控制模組則連接運動模組及電流感測模組，且根據所接收到之轉速值及電流值控制運動模組。其中，當使用者未對行走輔助系統施力時，中央控制模組即控制運動模組靜止，而當使用者對行走輔助系統施外力時，中央控制模組即根據外力控制運動模組運作。
感測元件、製造方法及其生物檢測系統
(2013-01-21)
許鉦宗
;
陳振嘉
;
李耀坤
;
張可欣
本發明係揭露一種感測元件、製造方法及其生物檢測系統。此感測元件包含一具有通道之場效應電晶體、一參考電極、一第一頓化層、一第二頓化層以及一微流道。第一頓化層用以包覆場效應電晶體之一端，第二頓化層用以包覆場效應電晶體之另一端，微流道與第一頓化層及第二頓化層接合，使其微流道橫跨於通道場效應電晶體通道上。場效應電晶體一通道表面以化學或物理方法修飾之，當一待測樣品透過微流道接觸通道之表面時，通道場效應電晶體之電導即可隨之改變達成微量偵測。
管網滲漏偵測方法與裝置
(2013-01-21)
黃彥禎
;
葉弘德
本發明提出一種管網滲漏偵測方法，其包括步驟：建構一管網，該管網中具有至少一滲漏點與一流場；計算該流場的一穩態解；對該流場施加一擾動；以及基於該穩態解而計算該流場的一暫態解以獲得與該至少一滲漏相關的滲漏資訊。
Probing into the metal-graphene interface by electron transport measurements
(2013-01-21)
Lin, Yen-Fu
;
Wang, Sheng-Tsung
;
Pao, Chia-Chen
;
Li, Ya-Chi
;
Lai, Cheng-Chieh
Metal-graphene contact recently attracts much attention because of its effects on the performance and the operational speed of graphene field-effect transistor. Simple two-probe graphene devices on mechanically exfoliated graphene flakes are fabricated and the temperature behavior of resistance is measured from room temperature down to liquid helium temperature for the study of electron transport in the interface. Comparing experimental data with several different transport theories, it is confirmed that the model of fluctuation-induced tunneling conduction describes precisely the electron transport and indicates the existence of a thin insulating layer in the metal-graphene interface. Through the interface probing by electron transport measurements, the way to reduce the contact resistance is suggested. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789554]
Inferring homologous protein-protein interactions through pair position specific scoring matrix
(2013-01-21)
Lin, Chun-Yu
;
Chen, Yung-Chiang
;
Lo, Yu-Shu
;
Yang, Jinn-Moon
;
生物科技學系
Background: The protein-protein interaction (PPI) is one of the most important features to understand biological processes. For a PPI, the physical domain-domain interaction (DDI) plays the key role for biology functions. In the post-genomic era, to rapidly identify homologous PPIs for analyzing the contact residue pairs of their interfaces within DDIs on a genomic scale is essential to determine PPI networks and the PPI interface evolution across multiple species. Results: In this study, we proposed "pair Position Specific Scoring Matrix (pairPSSM)" to identify homologous PPIs. The pairPSSM can successfully distinguish the true protein complexes from unreasonable protein pairs with about 90% accuracy. For the test set including 1,122 representative heterodimers and 2,708,746 non-interacting protein pairs, the mean average precision and mean false positive rate of pairPSSM were 0.42 and 0.31, respectively. Moreover, we applied pairPSSM to identify similar to 450,000 homologous PPIs with their interacting domains and residues in seven common organisms (e.g. Homo sapiens, Mus musculus, Saccharomyces cerevisiae and Escherichia coli). Conclusions: Our pairPSSM is able to provide statistical significance of residue pairs using evolutionary profiles and a scoring system for inferring homologous PPIs. According to our best knowledge, the pairPSSM is the first method for searching homologous PPIs across multiple species using pair position specific scoring matrix and a 3D dimer as the template to map interacting domain pairs of these PPIs. We believe that pairPSSM is able to provide valuable insights for the PPI evolution and networks across multiple species.
兆赫波分束器裝置
(2013-01-21)
趙如蘋
;
潘犀靈
;
林家任
;
林俊賢
本發明揭露一種兆赫波分束器，其用以分束一兆赫波成為多個兆赫波。兆赫波分束器包括液晶相位光柵與電壓控制單元。電壓控制單元耦接液晶相位光柵，且提供一控制電壓來改變液晶相位光柵中的液晶分子的排列，使得兆赫波通過液晶相位光柵而分成多個兆赫波。