Browsing by Issue Date, starting with "2015-03-12"

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INTERCONNECTING STRUCTURE FOR ELECTRICALLY CONNECTING A FIRST ELECTRONIC DEVICE WITH A SECOND ELECTRONIC DEVICE
(2015-03-12)
Li Chun-Hsing
;
Kuo Chien-Nan
;
Ko Chun-Lin
An interconnecting structure for electrically connecting a first electronic device with a second electronic device is provided. The first electronic device has two first bond-pads, and the second electronic device has two second bond-pads electrically connected to the two first bond-pads respectively. The interconnecting structure includes a signal transmission structure electrically connected to the two first bond-pads and the two second bond-pads; and a ground device disposed between the first electronic device and the second electronic device so that the first electronic device and the second electronic device have a same ground potential.
Molecular Orbital Imaging of the Acetone S-2 Excited State Using Time-Resolved (e, 2e) Electron Momentum Spectroscopy
(2015-03-13)
Yamazaki, Masakazu
;
Oishi, Keiya
;
Nakazawa, Hiroyuki
;
Zhu, Chaoyuan
;
Takahashi, Masahiko
We report a time-resolved (e, 2e) experiment on the deuterated acetone molecule in the S-2 Rydberg state with a lifetime of 13.5 ps. The acetone S-2 state was prepared by a 195 nm pump laser and probed with electron momentum spectroscopy using a 1.2 keV incident electron beam of 1 ps temporal width. In spite of the low data statistics as well as of the limited time resolution (+/- 35 ps) due to velocity mismatch, the experimental results clearly demonstrate that electron momentum spectroscopy measurements of short-lived transient species are feasible, opening the door to time-resolved orbital imaging in momentum space.
Non-doped solid-state white light-emitting electrochemical cells employing the microcavity effect
(2015-03-14)
Lin, Guan-Rung
;
Chen, Hsiao-Fan
;
Shih, Hsien-Chang
;
Hsu, Jia-Hong
;
Chang, Yi
Solid-state white light-emitting electrochemical cells (LECs) have attracted research attention owing to their advantages of simple device structure, low operation voltage and compatibility with solution processes. In this work, we demonstrate a simple approach to obtain white electroluminescence (EL) from non-doped LECs based on a blue-emitting complex. With a relatively thicker emissive layer, red emission can be additionally enhanced by the microcavity effect when the recombination zone moves to appropriate positions. Hence, white EL can be harvested by combining blue emission from the complex and red emission from the microcavity effect. These non-doped white LECs show external quantum efficiencies and power efficiencies up to 5% and 12 lm W-1, respectively. These results show that efficient white EL can be obtained in simple non-doped LECs.
Competition and stability analyses among emissions, energy, and economy: Application for Mexico
(2015-03-15)
Pao, Hsiao-Tien
;
Fu, Hsin-Chia
;
管理科學系
;
Department of Management Science
In view of limited natural resources on Earth, linkage among environment, energy, and economy (3Es) becomes important perspectives for sustainable development. This paper proposes to use Lotka-Volterra, model for SUstainable Development (LV-SUD) to analyse the interspecific interactions, equilibria and their stabilities among emissions, different types of energy consumption (renewable, nuclear, and fossil fuel), and real GDP, the main factors of 3Es issues. Modelling these interactions provides a useful multivariate framework for prediction outcomes. Interaction between 3Es, namely competition, symbiosis, or predation, plays an important role in policy development to achieve a balanced use of energy resources and to strengthen the green economy. Applying LV-SUD in Mexico, an emerging markets country, analysing results show that there is a mutualism between fossil fuel consumption and GDP; prey-predator relationships that fossil fuel and GDP enhance the growth of emissions, but emissions inhibit the growth of the others; and commensalisms that GDP benefits from nuclear power, and renewable power benefits from fossil fuel. It is suggested that national energy policies should remain committed to decoupling the relevance between non-clean energy and GDP, to actively developing clean energy and thereby to properly reducing fossil fuel consumption and emissions without harming economic growth. (C) 2015 Elsevier Ltd. All rights reserved.
Using nanoindentation and cathodoluminescence to investigate the residual stress of ZnSe
(2015-03-15)
Wen, Hua-Chiang
;
Chou, Wu-Ching
;
Yau, Wei-Hung
;
Fan, Wen-Chung
;
Lee, Ling
In this study we examined the effects of the nanoindentation-induced residual stress of single-crystalline zinc selenide (ZnSe). We employed the nanoindentation technique to evaluate the dislocation mobility of ZnSe at loading ratios of 10 and 2 mN/min, with a holding time of 120 s under a constant load. We visualized the resultant dislocation and microcracks using cathodoluminescence (CL) spectroscopy and mapping to compare the nanoindentation-induced residual stresses of the various ZnSe samples. CL mapping revealed massive dislocation activities during the loading process. The dislocations played roles as nonradiative recombination centers that quenched the local CL intensity. Transmission electron microscopy also revealed the effects of nanoindentation-induced residual stress. To obtain insight into the influence of the residual stress and to determine the dislocation mobilities for ZnSe films, it was essential to monitor the quenching effect of nonradiative recombination centers as a function of CL mapping. (C) 2014 Elsevier B.V. All rights reserved.
Relative carrier-envelope phase stabilization of hybridly synchronized ultrafast Yb and Er fiber-laser systems with the feed-forward scheme
(2015-03-15)
Fong, Bo-Jyun
;
Lin, Wei-Ting
;
Wu, Shang-Ying
;
Peng, Jin-Long
;
Hsiang, Wei-Wei
Stabilization of the relative carrier-envelope (CE) phase for hybridly synchronized two-color fs Yb and Er fiber-laser systems is demonstrated for the first time by utilizing the feed-forward scheme based on an acousto-optic frequency shifter. The slow drift issues arising from the feed-forward scheme are solved by adding the in-loop relative CE frequency coarse stabilization via modulating the laser pump current. Sub-fs timing locking between the two-color pulses is still maintained due to the fast response and large locking range of hybrid synchronization. The approach provides an alternative way to obtain phase-stable synchronized two-color pulses with higher pulse energies. (C) 2015 Optical Society of America
Exploring students\' behavioural patterns during online peer assessment from the affective, cognitive, and metacognitive perspectives: a progressive sequential analysis
(2015-03-15)
Cheng, Kun-Hung
;
Hou, Huei-Tse
;
數位內容製作中心
;
Center for Digital Content Production
Previous research regarding peer assessment has investigated the relationships between peer feedback and learners\' performance. However, few studies investigate in-depth learning processes during technology-assisted peer assessment activities, particularly from affective, cognitive, and metacognitive perspectives. This study conducts a series of quantitative content analyses and progressive sequential analyses to explore 65 university students\' behavioural transition patterns from the three perspectives when they engage in an online peer assessment over two weeks. The findings show that the students mostly offer positive affective feedback but offer relatively less cognitive or metacognitive feedback. As the activity progresses, they increasingly display cognitive and metacognitive thinking in their feedback as well as increased negative affective feelings. While cognitive-oriented and metacognitive-oriented feedback is frequently provided to the groups who performed better, feedback for the groups who performed worse revealed more questions about direction. Further instructional guidance and system design suggestions are proposed for the implementation of online peer assessment.
The spectrum of the product of operators, and the product of their numerical ranges
(2015-03-15)
Li, Chi-Kwong
;
Tsai, Ming-Cheng
;
Wang, Kuo-Zhong
;
Wong, Ngai-Ching
;
應用數學系
We show that a compact operator A is a multiple of a positive semi-definite operator if and only if sigma(AB) subset of <(W(A)W(B))over bar>, for all (rank one) operators B. An example of a normal operator is given to show that the equivalence conditions may fail in general. We then obtain conditions to identify other classes of operators A so that equivalence conditions hold. (C) 2014 Elsevier Inc. All rights reserved.
Improved output power of GaN-based ultraviolet light-emitting diodes with sputtered AlN nucleation layer
(2015-03-15)
Chiu, C. H.
;
Lin, Y. W.
;
Tsai, M. T.
;
Lin, B. C.
;
Li, Z. Y.
In this work, the ultraviolet light emitting diodes (UV -LEDs) at 380 no were grown on patterned sapphire substrate (PSS) by atmospheric pressure metal organic chemical vapor deposition (AP-MOCVD). A sputtered AlN nucleation layer was utilized on the PSS to enhance the quality of the epitaxial layer. By using high resolution X-ray diffraction, the full width at half maximum of the rocking curve shows that the UV-LEDs with sputtered AlN nucleation layer had better crystalline quality when compared to conventional GaN nucleation samples. From the scanning electron microscope (SEM) and transmission electron microscopy (TEM) images, it can be observed that the Lip and sidewall portion of the pattern was smooth using the sputtered AlN nucleation layer. The threading dislocation densities (TDDs) are reduced from 6 x 107 cm(-2) to 2.5 x 107 cm(-2) at the interface between the u-GaN layers for conventional and AlN PSS devices, respectively. As a result, a much higher light output povver was achieved. The light output power at an injection current of 20 mA was enhanced by 30%. Further photoluminescence (PL) measurement and numerical simulation confirm that this increase or output power can be attributed to the improvement of material quality and light extraction. (C) 2014 Elsevier B.V. All rights reserved.
In situ DOX-calcium phosphate mineralized CPT-amphiphilic gelatin nanoparticle for intracellular controlled sequential release of multiple drugs
(2015-03-15)
Li, Wei-Ming
;
Su, Chia-Wei
;
Chen, Yu-Wei
;
Chen, San-Yuan
;
材料科學與工程學系
A co-delivery strategy has been developed to achieve the synergistic effect of a hydrophobic drug (camptothecin, CPT) and a hydrophilic drug (doxorubicin, DOX) by utilizing the unique structure of amphiphilic gelatin/camptothecin @calcium phosphate-doxorubicin (AG/CPT@CaP-DOX) nanoparticles as a carriers in order to replace double emulsions while preserving the advantages of inorganic materials. The hydrophobic agent (CPT) was encapsulated via emulsion with an amphiphilic gelatin core, and subsequently mineralized by CaP-hydrophilic drug (DOX) through precipitation to form a CaP shell on the CPT-AG amphiphilic gelatin core so that drug molecules with different characteristics (i.e. hydrophobic and hydrophilic) can be encapsulated in different regions to avoid their interaction. The existence of the CaP shell can protect the DOX against free release and cause an increased transfer of DOX across membranes, overcoming multidrug resistance. Release studies from core-shell carriers showed the possibility of achieving sequential release of more than one type of drug by controlling the pH-sensitive CaP shell and degradable AG core. The highly pH-responsive behavior of the carrier can modulate the dual-drug-release of DOX/CPT, specifically in acidic intracellular pH environments. The AG/CPT@CaP-DOX nanoparticles also exhibited higher drug efficiencies against MCF-7/ADR cells than MCF-7 cells, thanks to a synergistic cell cycle arrest/apoptosis-inducing effect between CPT and DOX. As such, this core shell system can serve as a general platform for the localized, controlled, sequential delivery of multiple drugs to treat several diseases, especially for multidrug-resistant cancer cells. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
A comparative investigation on the low-temperature catalytic oxidation of acetone over porous aluminosilicate-supported cerium oxides
(2015-03-15)
Lin, Liang-Yi
;
Wang, ChenYeh
;
Bai, Hsunling
;
環境工程研究所
;
Institute of Environmental Engineering
The performance of cerium oxide supported on mesoporous aluminosilicate particles (Al-MSPs) with a nominal Ce and Al loading of 2.8 and 1.2 wt.%, respectively, was evaluated for the low-temperature oxidation of acetone. The influence of the preparation methods, including one-step aerosol-assisted self-assembly (AASA) method and post-synthetic wet impregnation method, was examined. The results showed that the surface area and pore diameter of Ce/Al-MSPs(50/25) prepared by AASA method were similar to those of Ce-Al-MSPs made via traditional impregnation method, while a better metallic dispersion of Ce and Al oxide species on Ce/Al-MSP5(50/25) was observed as compared to that of Ce-Al-MSPs. The catalytic performances of Ce/Al-MSPs(50/25) and Ce-Al-MSPs were compared with that of cerium-impregnated H-ZSM-5 (Ce-ZSM-5) zeolite catalyst. The activity of freshly made catalysts followed the order: Ce/Al-MSPs(50/25) > Ce-ZSM-5 > Ce-Al-MSPs. The superior catalytic behavior of the Ce/Al-MSPs(50/25) could be due to the combined effect of strong surface reducibility and high acid property. Although Ce-ZSM-5 and Ce-Al-MSPs presented high activity for acetone removal in the beginning, their activities quickly decreased due to the coking effect. In contrast, Ce/Al-MSP5(50/25) showed a good stability during a 24 h test at the reaction temperature of 150 degrees C. Both surface reducibility and acidity played crucial roles for their high catalytic performance and high stability at low temperatures. (C) 2014 Elsevier B.V. All rights reserved.
一種主動矩陣顯示器裝置的畫素電路及其驅動方法
(2015-03-16)
戴亞翔
;
周祿盛
;
林俊佑
;
張嘉鴻
本發明係有關於一種主動矩陣顯示器裝置的畫素電路及其驅動方法，其係以全數位訊號藉由電阻與電晶體，控制預充之畫素電壓放電，而達到所欲灰階。畫素電路包含：第一開關，其控制端係耦合於掃描線，第二開關之第二端耦合於第一開關之第一端，第二開關之第一端耦合第一電源，第二開關之控制端耦合資料線。第三開關之第二端耦合第二電源，儲能元件之第一端耦合於第三開關之第一端，電阻耦合於第一開關之第二端與第三開關之第一端間，藉由控制第三開關，以對儲能元件之第一端預充電至第二電源之電壓值，並控制第一開關與第二開關開啟，以使儲能元件之第一端往第一電源放電，當該儲能元件之該第一端達到所設定之畫素電壓時，關閉該第二開關。 Provided is the pixel circuit for active matrix display apparatus and the driving method thereof, which is controlled by digital signal. The pre-charge pixel voltage is controlled and discharged by controlling the resistor and transistors, so that the desired grey scale is generated. The pixel circuit includes: a first switch, a second switch, a third switch a energy storage device and resistor. The control end of first switch is coupled to scan line. The second end of the second switch is coupled to the first end of the first switch. The first end of the second switch is coupled to the first source. The control end of the second switch is coupled to the data line. The second end of the third switch is coupled to the second source. The first end of the energy storage device is coupled to the first end of the third switch. The resistor is coupled to the second end of the first switch and the first end of the third switch. By controlling the third switch, the first end of the energy storage device is charged to the voltage of the second source. The first switch and the second switch are controlled to switch on, so that the first end of the energy storage device discharging to the first source. The second switch switches off when the first end of the energy storage device reaches the desired pixel voltage.
一種連接結構及其使用方法
(2015-03-16)
李俊興
;
郭建男
;
柯鈞琳
一種連接結構，可應用於一第一電子裝置和一第二電子裝置間的訊號傳遞，其包含傳輸線、第一訊號輸入/輸出端、第二訊號輸入/輸出端、第一焊墊、第二焊墊、訊號焊線、接地焊墊及接地焊線。晶片或載具上的焊墊透過焊線連接在一起，藉由適當設計傳輸線的數目、長度、及特徵阻抗，此結構可呈現寬頻的阻抗匹配及低的插入損失。 An interconnect structure, which can be applied to chip-to-chip or chip-to-carrier communication, composed of transmission lines, the first signal bond-pad, the second signal bond-pad, ground bond-pads and bondwires. The bond-pads on the chip or the carrier are connected to each other by bondwires. By properly designing number of transmission lines, length and characteristics impedance of transmission lines, the structure can provide a broadband signal transfer with good return loss and low insertion loss.
單脈衝雷達的比較器及其訊號產生方法
(2015-03-16)
黃瑞彬
;
郭芳銚
一種單脈衝雷達的比較器及其訊號產生方法。此比較器包括天線陣列、橫向電磁波模態空腔(TEM mode cavity)功率合成器以及切換裝置。天線陣列包括N個天線。橫向電磁波模態空腔功率合成器具有合成埠與M個輸入埠組合，各輸入埠組合具有正相輸入埠與反相輸入埠，N與M為大於1的整數。切換裝置耦接於天線陣列與橫向電磁波模態空腔功率合成器之間，用以將各天線接收的回波訊號傳送至輸入埠組合的其中之一的正相輸入埠或反相輸入埠。其中，橫向電磁波模態空腔功率合成器的合成埠依據輸入埠組合接收的回波訊號產生輸出訊號。 A comparator of a mono-pulse radar and a signal generation method thereof. The comparator includes an antenna array, TEM mode cavity power combiner and a switch device. The antenna array includes N antennas. The TEM mode cavity power combiner includes a combination port and M input port sets, and each of the input port sets has a positive input port and a negative input port, wherein N and M are integer greater than 1. The switch device is coupled between the antenna array and the TEM mode cavity power combiner and used for transmitting the reflected signal received by the antenna array to the positive input port or the negative input port of one of the input port sets. An output signal is generated according to the received reflected signal from the input port sets by the combination port of the TEM mode cavity power combiner.
Near-infrared femtosecond laser ionization of the acetic acid dimer
(2015-03-16)
Amada, Mai
;
Sato, Yasuha
;
Tsuge, Masashi
;
Hoshina, Kennosuke
;
應用化學系
Fragment ions produced after the ionization of the acetic acid dimer (CH3COOH)(2) in a near-infrared intense femtosecond laser field were measured using time-of-flight mass spectrometry. The two-body Coulomb explosion (CE) process (CH3COOH)(2)(2+) -> 2CH(3)COOH(+) with a kinetic energy release of 3.4 eV, similar to the case of (HCOOH)(2)(2+) (Hoshina et al., 2012), was identified. The two-body CE of (CH3COOH)(2)(2+) was induced when the laser polarization direction was perpendicular to the C center dot center dot center dot C intermolecular axisin contrast to the case of (HCOOH)(2)(2+). The preferential configurations may be those that deform dimer structures close to dimer dications during the double-ionization process. (C) 2015 Elsevier B.V. All rights reserved.
ZnO-Coated Carbon Nanotubes: Inter-Diffusion of Carboxyl Groups and Enhanced Photocurrent Generation
(2015-03-16)
Hung, Chia-I
;
Wen, Hua-Chiang
;
Lai, Yao-Cheng
;
Chang, Shih-Hsin
;
Chou, Wu-Ching
ZnO is a defect-governed oxide and emits light at both visible and UV regimes. This work employs atomic layer deposition to produce oxide particles on oxygenated carbon nanotubes, and the composites only show emission profiles at short wavelengths. The quenching of defect-related emissions at long wavelengths is verified, owing to carboxyl diffusion into oxygen vacancies, and doping is supported by ZnCO3 formation in oxide lattice. Fully coated tubes display an increased photocurrent and the quantum efficiency increases by 22% relative to the bare nanotubes.
有機－無機混成矽氧烷水膠組成物及其製備方法和應用
(2015-03-16)
劉典謨
;
許仲育
;
張雅晴
本發明揭露一種有機-無機混成矽氧烷水膠組成物及其製備方法和應用，是利用末端羥基之矽氧烷巨分子與無機矽烷偶聯劑做為原料，在加溫與鹼性環境下進行反應，待其形成澄清透明溶液後，直接與親水性之2-羥基乙基丙烯酸甲酯和甲基丙烯酸進行混合，形成可光聚合之有機-無機混成矽氧烷水膠組成物，而不會造成相分離的情況，且過程中無需添加稀釋劑，也不需有機溶劑處理，再經紫外光加熱固化後所得之有機-無機混成矽氧烷水膠兼具高透光性、尺寸穩定性，未來可廣泛應用於光學、醫材及塗料工業上。 An organic-inorganic hybrid siloxane hydrogel composition, and manufacturing method and using the same are provided. The siloxane macromolecule having terminal hydroxyl groups and the inorganic silane coupling agent are utilized as the material, to react in the heating and alkaline condition to form a clear and transparent solution. The solution is mixed with the hydrophilic 2-hydroxyethyl acrylate and methacrylic acid to form the photopolymerizable organic - inorganic hybrid silicone hydrogel formulation without phase separation. The diluent and the organic solvent treatment are not required. After the formulation by the UV heat curing, the hydrogel is obtained with high transmittance and dimensional stability, and may be widely applied in ophthalmic, medical device and coating industry in the future.
Active liquid crystal array device and the fabrication method thereof
(2015-03-17)
Jen Tai-Hsiang
;
Chen Chih-Wei
;
Chang Yu-Cheng
;
Hsieh Po-Yuan
;
Huang Yi-Pai
An active liquid crystal array device is provided. A gate control electrode is disposed on the first transparent conductive substrate, a first transparent insulation layer is disposed on the gate control electrode, a liquid crystal control electrode is disposed on the first transparent insulation layer, a second transparent conductive substrate which includes a transparent electrode and a second liquid crystal oriented layer, and a liquid crystal layer is disposed between the first liquid crystal oriented layer and a second liquid crystal oriented layer.
High Expression Level of Tra2-beta 1 Is Responsible for Increased SMN2 Exon 7 Inclusion in the Testis of SMA Mice
(2015-03-17)
Chen, Yu-Chia
;
Chang, Jan-Gowth
;
Jong, Yuh-Jyh
;
Liu, Ting-Yuan
;
Yuo, Chung-Yee
Spinal muscular atrophy (SMA) is an inherited neuromuscular disease caused by deletion or mutation of SMN1 gene. All SMA patients carry a nearly identical SMN2 gene, which produces low level of SMN protein due to mRNA exon 7 exclusion. Previously, we found that the testis of SMA mice (smn(-/-) SMN2) expresses high level of SMN2 full-length mRNA, indicating a testis-specific mechanism for SMN2 exon 7 inclusion. To elucidate the underlying mechanism, we established primary cultures of testis cells from SMA mice and analyzed them for SMN2 exon 7 splicing. We found that primary testis cells after a 2-hour culture still expressed high level of SMN2 full-length mRNA, but the level decreased after longer cultures. We then compared the protein levels of relevant splicing factors, and found that the level of Tra2-beta 1 also decreased during testis cell culture, correlated with SMN2 full-length mRNA downregulation. In addition, the testis of SMA mice expressed the highest level of Tra2-beta 1 among the many tissues examined. Furthermore, overexpression of Tra2-beta 1, but not ASF/SF2, increased SMN2 minigene exon 7 inclusion in primary testis cells and spinal cord neurons, whereas knockdown of Tra2-beta 1 decreased SMN2 exon 7 inclusion in primary testis cells of SMA mice. Therefore, our results indicate that high expression level of Tra2-beta 1 is responsible for increased SMN2 exon 7 inclusion in the testis of SMA mice. This study also suggests that the expression level of Tra2-beta 1 may be a modifying factor of SMA disease and a potential target for SMA treatment.
THE PIXEL CIRCUIT FOR ACTIVE MATRIX DISPLAY APPARATUS AND THE DRIVING METHOD THEREOF
(2015-03-19)
TAI Ya-Hsiang
;
CHOU Lu-Sheng
;
LIN Chun-Yu
;
CHANG Chia-Hung
Provided is the pixel circuit for active matrix display apparatus and the driving method thereof, which is controlled by digital signal. The pre-charge pixel voltage is controlled and discharged by controlling the resistor and transistors, so that the desired grey scale is generated. The pixel circuit includes: a first switch, a second switch, a third switch, an energy storage device and resistor. By controlling the third switch, the first end of the energy storage device is charged to the voltage of the second source. The first switch and the second switch are controlled to switch on, so that the first end of the energy storage device discharging to the first source. The second switch switches off when the first end of the energy storage device reaches the desired pixel voltage.