Browsing by Issue Date, starting with "2019-04-10"

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Au-BINOL Hybrid Nanocatalysts: Insights into the Structure-Based Enhancement of Catalytic and Photocatalytic Performance
(2019-04-10)
Patolla, Shashank Reddy
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Kao, Chen-Rui
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Chen, Guan-Wei
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Huang, Yu-Cheng
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Chuang, Yu-Chun
Advances in new systems of organic-inorganic hybrid nanocomposites are less prevalent, owing to a lack of facile strategies for precise control of their structures, compositions, and, hence, their properties. In this work, Au-BINOL hybrid nanocomposites with eccentric and concentric nanostructures were produced. The hybrid nanocomposites containing two distinct moieties of inorganic Au nanocrystals and organic BINOL nanospheres were applied to the catalytic hydrogenation of 4-nitrophenol with NaBH4 in the aqueous phase with and without the illumination of visible light. Here, we demonstrate that the existence of Au-BINOL interfaces offers benefits to their performance. The eccentric nanostructures made with CTAC show the superior activity from large Au-BINOL interfaces formed between the BINOL nano spheres and the faces of Au nanoplates. They further exhibit a high Au localized surface plasmon resonance (LSPR)-enhancement effect on the photoreduction of 4-nitrophenol, which is attributed to the strong LSPR absorption of exposed Au nanocrystals unaffected by the coverage of BINOL shells.
Cationic Ir-III Emitters with Near-Infrared Emission Beyond 800 nm and Their Use in Light-Emitting Electrochemical Cells
(2019-04-11)
Chen, Guan-Yu
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Chang, Bo-Ren
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Shih, Ting-An
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Lin, Chien-Hsiang
;
Lo, Chieh-Liang
Solid-state near-infrared (NIR) light-emitting devices have recently received considerable attention as MR light sources that can penetrate deep into human tissue and are suitable for bioimaging and labeling. in addition, solidstate NIR light-emitting electrochemical cells (LECs) have shown several promising advantages over NIR organic light-emitting devices (OLEDs). However, among the reported NIR LECs based on ionic transition-metal complexes (iTMCs), there is currently no iridium-based LEC that displays NIR electroluminescence (EL) peaks near to or above 800 nm. In this report we demonstrate a simple method for adjusting the energy gap between the highest-occupied molecular orbital (HOMO) and the lowest-unoccupied molecular orbital (LUMO) of iridium-based iTMCs to generate NIR emission. We describe a series of novel ionic iridium complexes with very small energy gaps, namely NIR1-NIR6, in which 2,3-diphenylbenzo[g]quinoxaline moieties mainly take charge of the HOMO energy levels and 2,2'-biquinoline, 2-(quinolin-2-yl)quinazoline, and 2,2'-bibenzo[d]thiazole moieties mainly control the LUMO energy levels. All the complexes exhibited NIR phosphorescence, with emission maxima up to 850 nm, and have been applied as components in LECs, showing a maximum external quantum efficiency (EQE) of 0.05% in the EL devices. By using a host-guest emissive system, with the iridium complex RED as the host and the complex NIR3 or NIR6 as guest, the highest EQE of the LECs can be further enhanced to above 0.1%.
Risk of Psychiatric Morbidity in Psychosexual Disorders in Male Patients: A Nationwide, Cohort Study in Taiwan
(2019-04-11)
Tzeng, Nian-Sheng
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Yeh, Hui-Wen
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Chung, Chi-Hsiang
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Chang, Hsin-An
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Kao, Yu-Chen
This study aimed to investigate the association between males with psychosexual disorders (PSDs) and the risk of developing psychiatric disorders. A total of 34,972 enrolled patients, with 8,743 subjects who had suffered from PSD and 26,229 controls (1:3) matched for age and index year, from Taiwan's Longitudinal Health Insurance Database (LHID) from 2000 to 2015, selected from the National Health Insurance Research Database (NHIRD). After adjusting all the confounding factors, the multivariate Cox regression model was used to compare the risk of developing psychiatric disorders, between the PSD and non-PSD groups, during the 15 years of follow-up. Of the all enrollees, 1,113 in the PSD cohort and 2,611 in the non-PSD cohort (1,180.96 vs. 954.68 per 100,000 person-year) developed psychiatric disorders. Multivariate Cox regression model survival analysis revealed that, after adjusting for gender, age, monthly income, urbanization level, geographic region, and comorbidities, the adjusted hazard ratio (HR) was 2.448 (95% CI [2.227, 2.633], p < .001). PSD has been associated with the increased risk in anxiety disorders, depressive disorders, bipolar disorders, sleep disorders, and psychotic disorders, respectively. Sexual dysfunctions, paraphilia, and gender identity disorders were associated with the overall psychiatric disorders with adjusted HRs as 1.990 (p < .001), 11.622 (p < .001), and 5.472 (p < .001), respectively. Male patients who suffered from PSD have a higher risk of developing psychiatric disorders, and this finding should be considered as a timely reminder for the clinicians to provide much more attention for these patients because of their mental health issues.
Electrical polarization induced by atomically engineered compositional gradient in complex oxide solid solution
(2019-04-12)
Wu, Ping-Chun
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Huang, Rong
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Hsieh, Ying-Hui
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Wang, Bo
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Yen, Min
Control of inhomogeneity in materials in order to avoid unexpected effects to the system remains a challenge. In this study, we seek to engineer inhomogeneity in materials and anticipate new properties. Through precise control of composition at the atomic scale, an electrical polarization is induced in the composition-graded LaAIO(3)-SrTiO3 solid solution epitaxially deposited on NdGaO3 substrates. By tailoring the direction of compositional gradient, the relationship between structure and electrical polarization is simulated via phase-field modeling and revealed by a combination of scanning transmission electron microscopy and scanning probe microscopy. The analysis of the results indicates that the induced polarization is due to the flexoelectric effect in the compositional gradient system. The results of this study provide a new pathway for obtaining a new material genome. Moreover, by a suitable design of the new genome, that is, by using different combinations of compositional gradient geometries, local conduction can be obtained and manipulated, providing a new approach to obtain the desired properties.
鐵窗花的凋零與盛放
(2019-04-14)
吳佳璘
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Department of Communication and Technology
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傳播與科技學系
【專題名稱：老屋計畫】專題

鐵窗上的窗紋代表著早年台灣的庶民美學，是不可抹滅的建築符號，也是中生代的台灣人童年的記憶。三十年前是民居建築中常見的裝飾，但是卻因為不鏽鋼鐵窗的傳入和建築風格的改變逐漸沒落。
《超單身社會》下的女性
(2019-04-14)
王允姸
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Department of Communication and Technology
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傳播與科技學系
【單身化社會：單身女性何去何從】專題

我們生活的環境正步入單身化社會，而社會中的單身女性也越來越多。本篇透過日本研究單身生活者的權威荒川和久的著書《超單身社會》，探討單身女性人數的增長，如何與社會發展相互影響。
總編輯的話
(2019-04-14)
許可晴
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Department of Communication and Technology
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傳播與科技學系
本期為喀報311期，共計10篇文章，包含五篇文化現象、四篇藝文評論、一篇人物特寫。本期頭題為吳佳璘的〈鐵窗花的凋零與盛放〉，文章通篇流暢，題材新穎且融合人物採訪。
心凌愛唱歌　歌迷愛心凌
(2019-04-14)
卓瑋哲
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Department of Communication and Technology
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傳播與科技學系
【2019愛凌依舊　甜蜜天后王心凌】專題

睽違整整三年，王心凌帶著全新專輯《CYNDILOVES2SING愛。心凌》回歸。「甜蜜」曾經是王心凌在音樂發展路上擺脫不了的絆腳石，但這一次，王心凌以不同的心態詮釋甜蜜，驚豔華語歌壇。
禁入直播　你還想成為直播主嗎
(2019-04-14)
蘇嘉薇
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Department of Communication and Technology
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傳播與科技學系
【當代直播文化之剖析】專題

以電影《禁入直播》為例，探討情色直播主（Cam girl）在產出內容的過程中所面對的險境、社會對她們的批判、以及網路安全問題。
透過節目　我們「相遇」了
(2019-04-14)
蔡佳妤
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Department of Communication and Technology
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傳播與科技學系
【現實與幻想之間的「愛」】專題

戀愛真人實境秀是實境秀的一種，到底實境秀為什麼吸引人，我們又為何會持續的觀看相似的節目，本影片都會一一分析給觀眾。
新人稀缺　台劇演員荒？
(2019-04-14)
陳盈璇
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Department of Communication and Technology
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傳播與科技學系
【演員的挑戰】專題

探討台灣演員斷層的原因、闡述台灣戲劇圈面臨的困境。
A far-red to NIR emitting ultra-sensitive probe for the detection of endogenous HOCl in zebrafish and the RAW 264.7 cell line
(2019-04-14)
Natarajan, Vijay
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Thirumalaivasan, Natesan
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Wu, Shu-Pao
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Sivan, Velmathi
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應用化學系
Fluorescence imaging is a dynamic tool for monitoring the functions of biomolecules in living systems. Probes with emission in the far-red to near-infrared range have been found to demonstrate great application prospects in bioimaging due to their deep tissue penetration, low background fluorescence, minimum photodamage to the tissue and high sensitivity. The present study aimed to construct a far-red to near-infrared emitting probe (PI) bearing dicyanoisophorone coupled with a phenothiazine moiety. The probe exhibits an instant response towards HOCl with a colour change from red to yellow with a 100 fold fluorescence enhancement at 620 nm with a low detection limit (42 nM). The electron-rich sulfur atom can be oxidised by HOCl; this endows the probe with distinct selectivity over other anions as well as other reactive oxygen species. The probe demonstrates great cell permeability with low toxicity to the cell. Therefore, the probe can be effectively applied in biological systems to monitor the endogenous level of HOCl produced by PMA in living systems and in the fluorescence imaging of endogenous HOCl in zebrafish and the RAW 264.7 cell line.
翻開初戀那天所讀的故事
(2019-04-14)
林函諭
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Department of Communication and Technology
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傳播與科技學系
【「漫改」漫畫改編真人的感情世界】專題

《初戀那天所讀的故事》是改編自持田秋老的同名漫畫。透過細膩的筆觸，帶出屬於初戀的故事。
蕃薯市集ON AIR　喀人廣播節目
(2019-04-14)
李庭安
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Department of Communication and Technology
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傳播與科技學系
【新一代　在地創生大使命】專題

隨著時間發展，文化保存的意識抬頭，現在越來越多年輕人選擇回到自己的家鄉，投入自己的專長、創意、熱情來進行在地創生工作。是什麼讓他們回頭？「在地」對他們來說又是什麼？
一個賣家的誕生
(2019-04-14)
殷顗霖
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Department of Communication and Technology
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傳播與科技學系
【網路時代「購」不夠？了解知識一起GO！】專題

本篇文章用圖表的方式，告訴你一個賣家該如何誕生。
圖解遊戲敘事：阿驢老師說故事
(2019-04-14)
呂奕廷
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Department of Communication and Technology
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傳播與科技學系
【第九藝術的綻放：獨立遊戲】專題

遊戲也可以說故事嗎？敘事表現的手法與電影小說有什麼不同？原來我們平常體驗的遊戲劇情不只表面上看到的那麼簡單？今天讓遊戲大師阿驢帶領大家用圖解，配合幾個獨立遊戲的範例，輕鬆瞭解遊戲的敘事世界。
A review on airflow management in data centers
(2019-04-15)
Chu, Wen-Xiao
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Wang, Chi-Chuan
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機械工程學系
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Department of Mechanical Engineering
This study provides a review upon airflow management in data centers. Based on the available airflow path, cooling systems in data centers are categorized as long-distance cooling or short-distance cooling systems. Investigations on airflow management include tests in real data center or in simulated data center. Besides, the computational fluid dynamics (CFD) had been widely employed upon the thermal and airflow management of the data centers. For the long-distance cooling system, the airflow management normally adopts raised-floor configuration and hot/cold aisle arrangement. The major problems in airflow management include hot-air recirculation, cold-air bypass, leakages, over-provisioned and under-provisioned air supply, and airflow/temperature non-uniformity. The aforementioned effects often interact with the geometry layout of the data center. Related literatures regarding the effect of plenum depth, perforated tiles, enhanced facility such as induced bypass fans, infrastructure layout, aisle containment and leakage are discussed and compared. In addition, studies on the overhead air supply method are also examined and compared with the raised-floor ones. For the short-distance cooling system, the effect of server layout and heat exchanger layout concerning the airflow uniformity are investigated. It is found that the appropriate management of the original design into centralized server layout can ease the mal-distribution of airflow into the severs by 30%. This review aims to emphasize the criteria of implementing airflow management to data centers that serve as a reference guide for energy saving in data center as far as airflow arrangement is concerned. Moreover, some recommended future research efforts are also addressed.
Composite metal substrate for thin film AlGaInP LED applications
(2019-04-15)
Horng, R. H.
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Sinha, Shreekant
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Lee, C. P.
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Feng, H. A.
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Chung, C. Y.
The fabrication and feasibility assessment of n-side up, thin-epilayer, AlGaInPbased vertical light-emitting-diodes (LEDs; emitting area: 1 mm x 1 mm) with a copperinvar-copper-composite metal (CIC) substrate was obtained by wafer bonding and epilayer transferring technologies. The structure of CIC substrate is a top Cu layer of 20 mu m, a middle Invar layer of 64 mu m, and a bottom Cu layer of 20 mu m. The invar layer consists of Fe and Ni at a ratio of 70% to 30%. The coefficient of thermal expansion for CIC is about 6.1 x 10(-6) /K, which is similar to that of the GaAs substrate (5.7 x 10(-6)/K) and AlGaInP epilayers. Due to the high thermal conductivity (160 W/m-K) of 10(4)-mu m-thick CIC, the high performances of the packaged LEDs are obtained. They present a low red shift phenomenon (from 623 to 642 nm for 100 mA to 1 A) and a high output power 212 mW at 800 mA. The CIC substrate can be extended to fabricate high-efficiency thin film LEDs with conventional vertical electrodes. (c) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Pulse compression irrespective of fiber dispersion using chirp of transistor lasers
(2019-04-15)
Tung, Chien-Ting
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Chang, Chi-Hsiang
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Chang, Shu-Wei
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Wu, Chao-Hsin
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光電工程學系
The voltage modulation of transistor lasers (TLs) through Franze-Keldysh absorption can impose an unconventional chirp on optical signals. In this Letter, we model this chirp effect and demonstrate how the output Gaussian pulse is reshaped through optical fibers. It is shown that pre-chirped pulses of TLs may be compressed in fibers with both normal and anomalous dispersions. (C) 2019 Optical Society of America
Flexible, multifunctional neural probe with liquid metal enabled, ultra-large tunable stiffness for deep-brain chemical sensing and agent delivery
(2019-04-15)
Wen, Ximiao
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Wang, Bo
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Huang, Shan
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Liu, Tingyi ''Leo''
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Lee, Meng-Shiue
Flexible neural probes have been pursued previously to minimize the mechanical mismatch between soft neural tissues and implants and thereby improve long-term performance. However, difficulties with insertion of such probes deep into the brain severely restricts their utility. We describe a solution to this problem using gallium (Ga) in probe construction, taking advantage of the solid-to-liquid phase change of the metal at body temperature and probe shape deformation to provide temperature-dependent control of stiffness over 5 orders of magnitude. Probes in the stiff state were successfully inserted 2 cm-deep into agarose gel "brain phantoms" and into rat brains under cooled conditions where, upon Ga melting, they became ultra soft, flexible, and stretchable in all directions. The current 30 mu m-thick probes incorporated multilayer, deformable microfluidic channels for chemical agent delivery, electrical interconnects through Ga wires, and high-performance electrochemical glutamate sensing. These PDMS-based microprobes of ultra-large tunable stiffness (ULTS) should serve as an attractive platform for multifunctional chronic neural implants.