Browsing by Issue Date, starting with "2013-01-08"

Now showing 1 - 20 of 32709

Benzooxadiazole-based donor/acceptor copolymers imparting bulk-heterojunction solar cells with high open-circuit voltages
(2013-01-08)
Jiang, Jian-Ming
;
Yang, Po-An
;
Lan, Shang-Che
;
Yu, Chia-Ming
;
Wei, Kung-Hwa
In this study we used Suzuki cross-coupling to synthesize three new donor/acceptor copolymers-PFTBO, PAF1130, and PCTBO-featuring soluble alkoxy-modified 2,1,3-benzooxadiazole (BO) moieties as acceptor units and electron-rich building blocks-dialkyl fluorene (F), alkylidene fluorene (AF), and carbazole (C), respectively-as donor units. These polymers, which we characterized using gel permeation chromatography, thermogravimetric analysis, NMR spectroscopy, UV-Vis absorption spectroscopy, and electrochemical cyclic voltammetry, exhibited good solubility, low-lying energy levels for their highest occupied molecular orbitals, excellent thermal stability, and air stability. Using these polymers, we fabricated bulk-heterojunction solar cell devices having the structure indium tin oxide/poly(3,4-ethylenedioxythiophene):polystyrenesulfonate/polymer:[6,6]-phenyl-C-61-butyric acid methyl ester (PC61BM) (1:1, w/w)/Ca/Al. Under AM 1.5G illumination (100 mW cm(-2)), the solar cell incorporating PFTBO exhibited a high value of V-OC of 1.04 V and that based on PCTBO provided a power conversion efficiency of 4.1% without the need for any post treatment. (C) 2012 Elsevier Ltd. All rights reserved.
Low-surface-free-energy polybenzoxazine/polyacrylonitrile fibers for biononfouling membrane
(2013-01-08)
Kao, Tzu-Hao
;
Chen, Jem-Kun
;
Cheng, Chih-Chia
;
Su, Ching-Juan
;
Chang, Feng-Chih
We blended poly(3-phenyl-3,4-dihydro-2H-1,3-benzoxazine) (PBA) into polyacrylonitrile (PAN) to generate low-surface-free-energy fibers without fluorine and silicon elements for electrospinning. Liquid-state BA at room temperature can be solidified in electrospinning process using PAN as a medium through their miscible behavior. Results indicate that the mixing below 50 wt% BA into PAN matrix for electrospinning has no significant dropping beads, indicated a miscible PAN/BA system. Above 70 wt% BA in PAN solution could not be solidified completely after electrospinning, revealed apparent beaded fibers. The PAN/PBA blend fibers, obtained after curing at 300 degrees C, generated a superhydrophobicity because of the low-surface-free-energy PBA. In addition, laser scanning confocal microscope (LSCM) measurements were included to determine the relative amount of antibody that adsorbed to these PAN/PBA fibers to examine the biofouling-resistant property. The results showed an obviously decreased protein adsorption with increasing PBA fraction. The correlations between PAN and PBA would provide insight into the designing and developing of low-surface-free-energy fibers without fluorine and silicon elements to improve biofouling-resistant property. (C) 2012 Elsevier Ltd. All rights reserved.
Crystal Structure and Molecular Packing Behavior of Poly(2,3-diphenyl-1,4-phenylenevinylene) Derivatives Containing Alkyl Side-Chains
(2013-01-08)
Ren, Xiang-Kui
;
Wu, Yu-Chun
;
Wang, Shao-Jie
;
Jiang, Shi-Dong
;
Zheng, Jun-Feng
Phase behavior and crystal structure of a series of poly(2,3-diphenyl-5-alkyl-p-phenylenevinylene) (denoted as DPn-PPV, where n represents the carbon number of the alkyl side-chain, n = 6, 8, 10, 12) were studied using differential scanning calorimetry, one- and two-dimensional (1D and 2D) wide-angle X-ray diffraction (WAXD), and selected area electron diffraction (SAED). The experimental results reveal that DPn-PPV exhibits one crystalline phase at low temperatures. On the basis of 2D WAXD and SAED patterns obtained from the oriented samples, the crystal structures are determined to be orthorhombic for DP6-PPV and monoclinic for DP8-PPV, DP10-PPV, and DP12-PPV. To account for the unusually large unit cell dimensions, we propose that the unit cell of DPn-PPV contains 4 chains (8 chemical repeat units). The complex crystal structure can be attributed to the longitudinal and transverse offsets between the neighboring chains, which shall be mainly due to the requirement of minimizing the steric hindrance caused by the attached pendent groups and maximizing the pi-pi interaction between the chains. The molecular packing scheme was simulated by using Cerius(2) software, of which the result agrees with the experimental data. The polarized UV-vis absorption and polarized solid-state photoluminescence (PL) property of these polymers was also investigated. The PL spectra indicated that the light emitted from the oriented film was preferentially polarized parallel to the shear direction, implying that DPn-PPV may potentially be useful in linearly polarized luminescence devices.
Dereverberation and noise reduction method for microphone array and apparatus using the same
(2013-01-08)
Bai Mingsian R.
;
Hur Ker-Nan
;
Liou Ying-Ting
A dereverberation and noise reduction method adapted for a microphone array and an apparatus using the same are proposed. The microphone array receives a plurality of audio signals from an audio source. The dereverberation and noise reduction method includes the following steps. The received audio signals are processed by a beamforming processing, and a first audio signal is generated. Besides, the received audio signals are processed by a suppression processing, and a suppression audio vector is generated. Further, suppression audio vector is processed by an adaptive filtering processing, and a second audio signal is generated. In addition, the second audio signal is subtracted from the first audio signal to acquire an audio output signal, where parameters of the adaptive filtering processing are adjusted according to a feedback of the audio output signal.
Drug-Carrying Contact Lens And Method For Fabricating The Same
(2013-01-09)
Liu, Dean-Mo
;
Liu, Pei-Ling
The present invention discloses a drug-carrying contact lens and a method for fabricating the same. The drug-carrying contact lens comprises a contact lens containing at least one amphiphatic hybrid nanocarrier carrying drug molecules. According to the heat or light sensitivity of the drug molecule, the present invention respectively fabricates an encapsulation-type drug-carrying contact lens and a drug-soaking type drug-carrying contact lens. The present invention uses a highly-biocompatible amphiphatic hybrid nanocarriers having superior drug encapsulation capability to wrap the drug molecules. Thereby, the drug molecules are uniformly distributed in the contact lens and can be gradually and locally released to the eye of the user wearing the contact lens. Therefore, the present invention can prevent or cure ocular diseases with the loss and side effects of the drug being reduced.
MAGNETICALLY-CONTROLLABLE NANOMETRIC POROUS DRUG CARRIER
(2013-01-10)
CHEN San-Yuan
;
CHEN Po-Jung
;
LIU Dean-Mo
;
HU Shang-Hsiu
The present invention discloses a magnetically-controllable nanometric porous drug carrier, wherein an organic or inorganic matrix is used to carry the drug, and wherein magnetic nanoparticles having magnetosensitivity are used to encapsulate the surface of the matrix and seal the drug inside the matrix. An external magnetic field is used to control the removal rate of the magnetic nanoparticles and control the behavior and rate of drug release.
DRUG-CARRYING CONTACT LENS AND METHOD FOR FABRICATING THE SAME
(2013-01-10)
Liu Dean-Mo
;
Liu Pei-Ling
The present invention discloses a drug-carrying contact lens and a method for fabricating the same. The drug-carrying contact lens comprises a contact lens containing at least one amphiphatic hybrid nanocarrier carrying drug molecules. According to the heat or light sensitivity of the drug molecule, the present invention respectively fabricates an encapsulation-type drug-carrying contact lens and a drug-soaking type drug-carrying contact lens. The present invention uses a highly-biocompatible amphiphatic hybrid nanocarriers having superior drug encapsulation capability to wrap the drug molecules. Thereby, the drug molecules are uniformly distributed in the contact lens and can be gradually and locally released to the eye of the user wearing the contact lens. Therefore, the present invention can prevent or cure ocular diseases with the loss and side effects of the drug being reduced.
Simple method to obtain accurate pretilt angles for thin twisted nematic liquid-crystal cells
(2013-01-10)
Wang, Sheng-Ya
;
Yang, Kei-Hsiung
;
光電系統研究所
;
影像與生醫光電研究所
;
Institute of Photonic System
Modern thin-film-transistor-driven twisted nematic (TN) products on the market require thin cell gaps below the value to satisfy the condition of the Gooch-Tarry first minimum in transmission for fast response times and wide viewing angles. For the first time to our knowledge, we have developed a simple experimental method based on a new configuration of out-of-plane cell rotation and analyzed our data by extended Jones matrix method to obtain accurate pretilt angles for such thin TN cells where the well-accepted configuration of the out-of-plane cell rotation method analyzed by Birecki and Kahn [ The Physics and Chemistry of Liquid Crystal Devices (1980), p. 115] was insufficient to address. (C) 2013 Optical Society of America
TOP-GATE TRANSISTOR ARRAY SUBSTRATE
(2013-01-10)
CHENG Huang-Chung
;
HUANG Yu-Chih
;
YANG Po-Yu
;
CHIANG Shin-Chuan
;
LI Huai-An
A top-gate transistor array substrate includes a transparent substrate with a plane, an ion release layer, a pixel array, and a first insulating layer. The ion release layer is disposed on the transparent substrate and completely covers the plane. The pixel array is disposed on the ion release layer and includes a plurality of transistors and a plurality of pixel electrodes. Each of the transistors includes a source, a drain, a gate and a MOS (metal oxide semiconductor) layer. The drain, the source and the MOS layer are disposed on the ion release layer. The pixel electrodes are electrically connected to the drains respectively. The gate is disposed above the MOS layer. The first insulating layer is disposed between the MOS layers and the gates. The MOS layer contacts the ion release layer. The ion release layer can release a plurality of ions into the MOS layers.
SPECIMEN BOX FOR ELECTRON MICROSCOPE
(2013-01-10)
CHEN Chih
;
TU King-Ning
The present invention relates to a specimen box for an electron microscope, which comprises a first substrate, a second substrate, and a metal adhesion layer. The first substrate has a first surface, a second surface, a first concave, and one or more first through holes, wherein the first through hole penetrates through the first substrate. The second substrate has a third surface, a forth surface, and a second concave. Besides, the metal adhesion layer is disposed between the first substrate and the second substrate to form a space for a specimen placed therein. In addition, the specimen box of the present invention further comprises one or more plugs. When the plug is assembled into the first through hole to seal the specimen box, the in-situ observation can be accomplished by using an electron microscope.
SPECIMEN BOX FOR ELECTRON MICROSCOPE
(2013-01-10)
CHEN Chih
;
Tu King-Ning
The present invention relates to a specimen box for an electron microscope, comprising a first substrate, a second substrate, one or more photoelectric elements, and a metal adhesion layer. The first substrate has a first surface, a second surface, a first concave, and one or more first through holes, wherein the first through holes penetrate through the first substrate. The second substrate has a third surface, a forth surface, and a second concave. The photoelectric element is disposed between the first substrate and the second substrate. In addition, the metal adhesion layer is disposed between the first substrate and the second substrate to form a space for a specimen contained therein. Besides, the present specimen box further comprises one or more plugs. When the plugs are assembled into the first through holes to seal the specimen box, the in-situ observation can be accomplished by using the electron microscope.
PHOTO SENSOR AND METHOD OF FABRICATING THE SAME
(2013-01-10)
Chen Chih
;
Liu Chien-Min
;
Tseng Yuan-Chieh
A photo sensor and a method of fabricating the same are disclosed, the photo sensor of the present invention has ultra-high Schottky junction area per unit volume, and the photo sensor comprises: a first conductive layer; plural metallic nanowires, in which one end of each metallic nanowire connects with the first conductive layer and is covered with a semiconductive layer having a width of 1 nm to 20 nm; and a second conductive layer locating opposite to the first conductive layer, whereby the plural metallic nanowires locate between the first conductive layer and the second conductive layer, and the semiconductive layer contacts with the second conductive layer, wherein the photo sensor of the present invention is used to detect ultra violet (UV) light with a wavelength of 10 nm-400 nm.
協調性可調式濾波裝置及之無線通訊前端電路
(2013-01-11)
郭建男
;
施鴻源
;
龐一心
本發明揭露一種具有協調性可調濾波器之前端電路，此電路包括第一濾波器、放大器與第二濾波器。放大器耦接於第一濾波器，第二濾波器耦接於放大器，放大器位於第一與第二濾波器之間。第一濾波器具有可調節之第一中心頻率，用以對接收信號進行濾波。放大器用以放大第一濾波器之輸出。第二濾波器具有可調節之第二中心頻率，用以對放大器之輸出進行濾波。其中，第一與第二中心頻率具有一協調性的調節關係。
電荷幫浦
(2013-01-11)
吳俊毅
;
謝維致
;
張銘宏
;
黃威
本發明係揭露一種電荷幫浦，可放大一輸入端所接收的輸入電壓，並於一輸出端輸出放大後之輸出電壓。此電荷幫浦包含複數個源汲極耦接電晶體作為充電電容，以及複數個疊接電晶體以對稱設置的方式連接於輸入端與輸出端間，且此電荷幫浦更包含複數個二極體連接式電晶體，以防止源汲極耦接的電晶體在電荷轉移過程中崩潰，並且提高電荷轉移速度。
雙重服務之光纖擷取系統
(2013-01-11)
陳智弘
;
林俊廷
;
施伯宗
;
彭朋群
;
戴盛鵬
本發明係揭露一種雙重服務之光纖擷取系統，包含一光調變裝置，用來接收有線網路之開關鍵控(OOK)訊號與無線網路之微波訊號，並利用開關鍵控訊號與微波訊號對一光源訊號進行調變，以輸出一輸出光源訊號。之後藉由一光纖傳輸通道傳輸輸出光源訊號至光接收裝置，光接收裝置可自輸出光源訊號中擷取開關鍵控訊號與微波訊號。本發明不但可克服光纖色散導致的微波訊號衰減問題，更不需要在使用者端使用光濾波器區分有線網路之開關鍵控訊號與無線網路之微波訊號，因此可應用在波長分波多工(WDM)系統上。
監督參與　重整老屋價值
(2013-01-13)
鄭乃文
;
Department of Communication and Technology
;
傳播與科技學系
新竹監獄周邊雅緻又有歷史價值的日式宿舍建築聚落，自1920年代聚集於此。2012年政府規劃預算準備拆除這些建築，卻受到民間團體強烈反對，這些市民認為這群老屋子蘊藏城市的記憶，亟欲保存這塊珍貴的歷史聚落。
圍棋　通往神乎其技的覺悟
(2013-01-13)
王蒂鷹
;
Department of Communication and Technology
;
傳播與科技學系
2002年，台灣引進日本卡通《棋靈王》，故事主角逐步成為職業棋士的過程令人感動，在社會上掀起一股「圍棋熱」。然而在台灣，成為職業棋士的保障並不穩定，許多年輕的職業棋士選擇升學而放棄圍棋。台灣棋士的未來又該何去何從？
多元音樂　單一信仰
(2013-01-13)
白婞嫈
;
Department of Communication and Technology
;
傳播與科技學系
一聽到「教會音樂」這四個字，會先想到什麼呢？是西方音樂第一本歌曲集「葛利果聖歌」，聖誕季節常有機會聽到的「平安夜」，或是會想起在歌唱比賽中，出現過幾次的「出口」？英文縮寫SOP的「讚美之泉」樂團，其實不「標準」。
聽見交傲底下的態度
(2013-01-13)
姚映竹
;
Department of Communication and Technology
;
傳播與科技學系
校園內有一群學生自發性地展開一連串的「交傲計畫」，企圖喚起交大人的凝聚力，共同為母校建置賢齊館付出。此計畫推動目的與宣傳方式，促使校園裡部分學生積極參與行動，同時也有人抱持著不盡相同的聲音。
搶領退休金　勞工的苦衷
(2013-01-13)
張睿文
;
Department of Communication and Technology
;
傳播與科技學系
勞工權益隨著時代進步越加被重視，政府也不斷承諾勞保制度會隨時間而改變，但對於勞工而言，這些保證並無達到太多成效，去年發生的勞工搶領退休金正是一個最佳寫照。是甚麼樣的原因導致了這樣的結果呢？