Browsing by Issue Date, starting with "2015-11-09"

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Enhanced critical current density in the pressure-induced magnetic state of the high-temperature superconductor FeSe
(2015-11-09)
Jung, Soon-Gil
;
Kang, Ji-Hoon
;
Park, Eunsung
;
Lee, Sangyun
;
Lin, Jiunn-Yuan
We investigate the relation of the critical current density (J(c)) and the remarkably increased superconducting transition temperature (T-c) for the FeSe single crystals under pressures up to 2.43 GPa, where the T-c is increased by similar to 8 K/GPa. The critical current density corresponding to the free flux flow is monotonically enhanced by pressure which is due to the increase in T-c, whereas the depinning critical current density at which the vortex starts to move is more influenced by the pressure-induced magnetic state compared to the increase of T-c. Unlike other high-T-c superconductors, FeSe is not magnetic, but superconducting at ambient pressure. Above a critical pressure where magnetic state is induced and coexists with superconductivity, the depinning Jc abruptly increases even though the increase of the zero-resistivity T-c is negligible, directly indicating that the flux pinning property compared to the T-c enhancement is a more crucial factor for an achievement of a large J(c). In addition, the sharp increase in J(c) in the coexisting superconducting phase of FeSe demonstrates that vortices can be effectively trapped by the competing antiferromagnetic order, even though its antagonistic nature against superconductivity is well documented. These results provide new guidance toward technological applications of high-temperature superconductors.
Topological control of nitric oxide secretion by tantalum oxide nanodot arrays
(2015-11-09)
Dhawan, Udesh
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Lee, Chia Hui
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Huang, Chun-Chung
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Chu, Ying Hao
;
Huang, Guewha S.
Background: Nitric oxide (NO) plays a very important role in the cardiovascular system as a major secondary messenger in signaling pathway. Its concentration regulates most of the important physiological indexes including the systemic blood pressure, blood flow, regional vascular tone and other cardiac functions. The effect of nanotopography on the NO secretion in cardiomyocytes has not been elucidated before. In this study, we report how the nanotopography can modulate the secretion profile of NO and attempt to elucidate the genetic pathways responsible for the same by using Tantalum Oxide nanodot arrays ranging from 10 to 200 nm. A series of nanodot arrays were fabricated with dot diameter ranging from 10 to 200 nm. Temporal NO release of cardiomyocytes was quantified when grown on different surfaces. Quantitative RT-PCR and Western blot were performed to verify the genetic pathways of NO release. Results: After hours 24 of cell seeding, NO release was slowly enhanced by the increase of dot diameter from 10 nm up to 50 nm, mildly enhanced to a medium level at 100 nm, and increase rapidly to a high level at 200 nm. The temporal enhancement of NO release dropped dramatically on day 3. On day 5, a topology-dependent profile was established that maximized at 50 nm and dropped to control level at 200 nm. The NO releasing profile was closely associated with the expression patterns of genes associated with Endothelial nitric oxide synthase (eNOS) pathway [GPCR, PI3K, Akt, Bad, Bcl-2, NF kappa B(p65), eNOS], but less associated with Inducible nitric oxide synthase (iNOS) pathway (TNF-alpha, ILK, Akt, I kappa Ba, NF kappa B, iNOS). Western blotting of Akt, eNOS, iNOS, and NF kappa B further validated that eNOS pathway was modulated by nanotopology. Conclusions: Based on the findings of the present study, 50, 100 nm can serve as the suitable nanotopography patterns for cardiac implant surface design. These two nanodot arrays promote NO secretion and can also promote the vascular smooth muscle relaxation. The results of this study can improve the heart stent design in the medical treatments.
Spontaneous orientation-tuning driven by the strain variation in self-assembled ZnO-SrRuO3 heteroepitaxy
(2015-11-09)
Zhu, Yuanmin
;
Chang, Wei Sea
;
Yu, Rong
;
Liu, Ruirui
;
Wei, Tzu-Chiao
Heteroepitaxial ZnO and SrRuO3 were grown on SrTiO3 (111) substrates and formed a self-assembled wurtzite-perovskite nanostructure. Spontaneous orientation-tuning of the SrRuO3 pillars was observed, with the growth direction changing from [111](SRO) to [011](SRO) as the film thickness increased, which is attributed to a misfit strain transition from the biaxial strain imposed by the SrTiO3 substrate to the vertical strain provided by the ZnO matrix. The [011]-SrRuO3 and [0001]-ZnO combination presents a favorable matching in the nanocomposite films, resulting in higher charge carrier mobility. This vertically integrated configuration and regulation on the crystallographic orientations are expected to be employed in designing multi-functional nanocomposite systems for applications in electronic devices. (C) 2015 AIP Publishing LLC.
Gender-Related Effect in Oxygenation Dynamics by Using Far-Infrared Intervention with Near-Infrared Spectroscopy Measurement: A Gender Differences Controlled Trial
(2015-11-10)
Kao, Wei-Lung
;
Sun, Chia-Wei
;
光電工程學系
;
Department of Photonics
Many studies have indicated the microcirculation can directly respond to disease-related symptoms. However, the capacity of microcirculation would vary due to the gender differences. Near-infrared spectroscopy (NIRS) is a noninvasive technique to monitor tissue oxygenation dynamics. In this study, the far-infrared (FIR) source was used for physiological intervention of microcirculation. The experimental results show that the nature difference of oxygenation status exists between male and female during FIR irradiation. Therefore, we suggest the NIRS-based assessment should be calibrated with the gender-related effect for clinical diagnosis of peripheral arterial disease.
單晶銅、其製備方法及包含其之基板
(2015-11-11)
陳智
;
杜經寧
;
呂佳凌
一種單晶銅，該單晶銅具有[100]方向，且體積係介於0.1~4.0×106 μm3 間以及厚度係介於0.1~50μm。
具有優選排列方向之金膜、其製備方法、及包含其之接合結構
(2015-11-11)
陳智
;
邱韋嵐
一種具有優選排列方向之金膜，該金膜係包括互相連接之複數個金晶粒，其中，至少50%以上之該些金晶粒係由複數個奈米雙晶金晶粒所組成，且該奈米雙晶金晶粒係由複數個奈米雙晶金沿著[111]晶軸方向堆疊而成，而該奈米雙晶金晶粒之直徑係0.1~10μm。
半導體元件製造方法
(2015-11-11)
劉柏村
;
鄧立峯
;
羅婉柔
;
李耀仁
一種使用微波退火程序的半導體元件製造方法，用以增強一半導體元件之效能，該製造方法至少包含下列步驟：形成一閘極層於一基板上；形成一閘極絕緣層於該閘極層上；形成一主動層於該閘極絕緣層上，且該主動層係由一微波吸收材料所組成，其中該微波吸收材料係由一金屬氧化物、一金屬氮化物以及一金屬氮氧化物群組中所選出；定義一源/汲極於該主動層上，以形成該半導體元件；以及進行一微波退火程序。
鑽石薄膜成長方法
(2015-11-11)
張立
;
陳昱長
;
陳致宇
一種鑽石薄膜成長方法，係包含下列步驟：提供一底板；藉由一磊晶步驟形成一異質基板於該底板上，其中該異質基板係由多個晶粒長成，且利用該磊晶步驟於該異質基板之一上表面之該多個晶粒之接合處形成不規則的多個微凹槽；提供多個鑽石核種嵌入該多個微凹槽；以及沉積一鑽石薄膜於該異質基板之該上表面。
單級閘極驅動電路之多輸出設計
(2015-11-11)
劉柏村
;
鄭光廷
;
張哲豪
;
周凱茹
;
吳哲耀
一種單級閘極驅動電路之多輸出設計，該單級閘極驅動電路具有多個掃描電路，其包含：一第一掃描電路，其包含：一設定單元，接收一起始訊號，產生一控制訊號；一驅動單元，耦接該設定單元，接收該控制訊號及一第一時脈訊號，該控制訊號及該第一時脈訊號使該驅動單元產生一第一掃描訊號，該驅動單元依據該第一時脈訊號驅動該第一掃描訊號提升至一第一準位，該驅動單元依據該第一時脈訊號驅動該第一掃描訊號降低至一第二準位，該第一準位高於該第二準位；及一第二掃描電路，耦接該第一掃描電路，接收該第一掃描訊號及一第二時脈訊號，該第二掃描電路依據該第一掃描訊號及該第二時脈訊號產生一第二掃描訊號；其中，該單級閘極驅動電路輸出該第一掃描訊號及該第二掃描訊號至複數像素，控制該些像素。
製備有機發光二極體之方法及其裝置
(2015-11-11)
許千樹
;
孟心飛
;
洪勝富
;
冉曉雯
;
曾信榮
一種製備有機發光二極體之方法，係包括下列步驟：提供一基板；於該基板上注佈由有機分子溶解於溶劑中所得之有機分子溶液；藉由刮刀將該有機分子溶液塗佈於該基板表面，以形成濕膜層；於形成該濕膜層後之10秒內，旋轉該基板；以及加熱該濕膜層以去除該溶劑而形成有機分子薄膜。
Guest Editorial for the 13th Asia Pacific Bioinformatics Conference
(2015-11-12)
Huang, Hsien-Da
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Chen, Yi-Ping Phoebe
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生物資訊及系統生物研究所
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Institude of Bioinformatics and Systems Biology
DATA HIDING METHOD VIA REVISION RECORDS ON A COLLABORATION PLATFORM
(2015-11-12)
LEE Ya-Lin
;
TSAI Wen-Hsiang
The present invention provides a data hiding method via revision records on a collaboration platform, which first creates a collaborative database including a plurality of articles and revision records. A user puts as input a cover document, a secret message, and a key on a collaboration platform. Based on four characteristics of multi-user collaborative-writing processing, the collaborative-writing platform is used, together with a key, to hide a secret message into the cover document automatically while simulating a collaborative-writing process and generate a stego-document where the secret message is hidden. Only authorized users with the key can extract the right secret message from the stego-document i.e. the message-hidden document successfully.
3D street art illusions: embedding chalk stylized rendering of 3D objects into a pavement photo
(2015-11-12)
Way, Der-Lor
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Hsieh, Cheng-Han
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多媒體工程研究所
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Institute of Multimedia Engineering
Three dimensional street art illusions have become more popular in recent years. Many of them are drawn on pavement such as streets, sidewalks, and town squares. It is often known as 3D chalk art, where a 2D artwork is drawn on the street, giving the viewer a 3D optical illusion from a certain perspective. This paper supplies chalk stylized renderings for 3D models and synthesizes 3D objects into a realistic photograph. Users can input one photo for the 3D model. First, a camera position is achieved by using a camera calibration algorithm. Second, a chalk stylized rendering was applied to create an artistic image of the 3D models using the same camera position. Then, the non-photorealistic rendering image is composited into a source photograph using a modified Poisson approach. All of the enhanced pavement texture details are also blended into the object\'s image. The major contribution of this paper is providing a user to create any interesting and attractive 3D illusionary art without physically drawing pictures on the pavement. Finally, the proposed method is demonstrated using various experimental 3D street art illusion images. Copyright (C) 2014 John Wiley & Sons, Ltd.
Fully parallel write/read in resistive synaptic array for accelerating on-chip learning
(2015-11-13)
Gao, Ligang
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Wang, I-Ting
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Chen, Pai-Yu
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Vrudhula, Sarma
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Seo, Jae-Sun
A neuro-inspired computing paradigm beyond the von Neumann architecture is emerging and it generally takes advantage of massive parallelism and is aimed at complex tasks that involve intelligence and learning. The cross-point array architecture with synaptic devices has been proposed for on-chip implementation of the weighted sum and weight update in the learning algorithms. In this work, forming-free, silicon-process-compatible Ta/TaOx/TiO2/Ti synaptic devices are fabricated, in which >200 levels of conductance states could be continuously tuned by identical programming pulses. In order to demonstrate the advantages of parallelism of the cross-point array architecture, a novel fully parallel write scheme is designed and experimentally demonstrated in a small-scale crossbar array to accelerate the weight update in the training process, at a speed that is independent of the array size. Compared to the conventional row-by-row write scheme, it achieves >30x speed-up and >30x improvement in energy efficiency as projected in a large-scale array. If realistic synaptic device characteristics such as device variations are taken into an array-level simulation, the proposed array architecture is able to achieve similar to 95% recognition accuracy of MNIST handwritten digits, which is close to the accuracy achieved by software using the ideal sparse coding algorithm.
製造歡笑的紅鼻子醫生
(2015-11-15)
呂安文
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Department of Communication and Technology
;
傳播與科技學系
十餘年的表演經歷，加上赴法半年密集訓練，紅鼻子醫生謝卉君，致力替醫院帶來歡笑聲。
繪畫　努力不懈的夢想
(2015-11-15)
林謙耘
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Department of Communication and Technology
;
傳播與科技學系
人生只能活一次的話，這次，我要為自己而活，完成畫畫的夢想。
彩虹遊行　青春不設限
(2015-11-15)
翁世樺
;
許心如
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Department of Communication and Technology
;
傳播與科技學系
第十三屆同志大遊行，年齡不設限，解放暗櫃，青春自主。
我的超人媽媽
(2015-11-15)
許人文
;
Department of Communication and Technology
;
傳播與科技學系
她有著高挑身材、飄逸長髮，是個有點迷糊的工作狂。她，是我的超人媽媽。
我的親情　我的愛情　我
(2015-11-15)
吳偉立
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Department of Communication and Technology
;
傳播與科技學系
簡單介紹我的人生。
閣樓日　女孩的魔幻盛宴
(2015-11-15)
唐宜嘉
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Department of Communication and Technology
;
傳播與科技學系
第五場「閣樓日Girl'z」市集以「餓鬼女孩」為主題，為遊客帶來最具女孩風格的魔幻盛宴。