Browsing by Issue Date, starting with "2016-08-19"

Now showing 1 - 20 of 16704

Humidity-switch chromism of aniline-pentamer in Nafion
(2016-08-19)
Lin, Yen-Hao
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Hsiao, Yu-Sheng
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Lu, Hsiao-Chi
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Chen, Peilin
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Whang, Wha-Tzong
Aniline-pentamer (AP) in Nafion triggered with humidity content displays an interesting chromism from blue to pink, which is much wider of color shift than general polyaniline. Thermogravimetric analysis confirms the reversal color change related to the moisture content in the sample. IR absorption spectra make known AP having high degree of protonation at lower water content. UV-Vis absorption expose the chromism process having something more than just protonation. The change of electronic energy levels and PL spectra reveal that there must be a complex interaction in NaAP. Raman scattering mapping confirms that drying causes the - SO3- hydrophilic channels transforming to isolated domains dispersed in matrix, which induces heavy protonation and complexation of AP with - SO3- groups. We can infer that the interesting humidity-switch chromism is due to the reversible protonation/deprotonation as well as complexation of AP with - SO3- groups through the reversible change of Nafion\'s morphology.
Status and Prospects of ZnO-Based Resistive Switching Memory Devices
(2016-08-19)
Simanjuntak, Firman Mangasa
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Panda, Debashis
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Wei, Kung-Hwa
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Tseng, Tseung-Yuen
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材料科學與工程學系
In the advancement of the semiconductor device technology, ZnO could be a prospective alternative than the other metal oxides for its versatility and huge applications in different aspects. In this review, a thorough overview on ZnO for the application of resistive switching memory (RRAM) devices has been conducted. Various efforts that have been made to investigate and modulate the switching characteristics of ZnO-based switching memory devices are discussed. The use of ZnO layer in different structure, the different types of filament formation, and the different types of switching including complementary switching are reported. By considering the huge interest of transparent devices, this review gives the concrete overview of the present status and prospects of transparent RRAM devices based on ZnO. ZnO-based RRAM can be used for flexible memory devices, which is also covered here. Another challenge in ZnO-based RRAM is that the realization of ultra-thin and low power devices. Nevertheless, ZnO not only offers decent memory properties but also has a unique potential to be used as multifunctional nonvolatile memory devices. The impact of electrode materials, metal doping, stack structures, transparency, and flexibility on resistive switching properties and switching parameters of ZnO-based resistive switching memory devices are briefly compared. This review also covers the different nanostructured-based emerging resistive switching memory devices for low power scalable devices. It may give a valuable insight on developing ZnO-based RRAM and also should encourage researchers to overcome the challenges.
Green synthesis of multifunctional mesoporous composites from display panel glasses for selective adsorption of metal ions
(2016-08-20)
Tsai, Cheng Kuo
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Doong, Ruey-an
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Hung, Huan-Yi
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環境工程研究所
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Institute of Environmental Engineering
Ultrathin flexible silicon photodetector with silver nanowires plasmonic structure for chemiluminescence sensing
(2016-08-20)
Liu, Lai-Yi
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Lin, Ching-Chnag
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Liu, Shuenyu
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Sun, Wen-Hsien
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Cheng, Chieh
Fabrication of alpha-MnO2 nano-particle and nano-rod composite electrodes for capacitive deionization
(2016-08-20)
Chen, Yi-Han
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Juang, Yaju
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Huang, Chihpin
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環境工程研究所
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Institute of Environmental Engineering
Reduced graphene oxide based bimetallic Ni/Fe nanohybrids for rapid dechlorination of trichloroethylene
(2016-08-20)
Sahu, Rama
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Li, Dong-Lin
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Doong, Ruey-An
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環境工程研究所
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Institute of Environmental Engineering
Gold nanorods self-assembly by dielectrophoretic and applications in solar cells
(2016-08-20)
Lin, Ching-Chang
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Sun, Wen-Hsien
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Liu, Shuenyu
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Liu, Lai-Yi
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Cheng, Chieh
Acidity of a TiO2-ZrO2 adsorbent modified with phosphate or tungstate species
(2016-08-20)
Chang, Sue-Min
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Shan, Po-Fan
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環境工程研究所
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Institute of Environmental Engineering
Observation of switchable photoresponse of a monolayer WSe2-mos2 lateral heterostructure via photocurrent spectral atomic force microscopic imaging
(2016-08-20)
Son, Youngwoo
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Li, MIng-Yang
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Cheng, Chia-Chin
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Wei, Kung-Hwa
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Liu, Pingwei
Organic bulk heterojunction photovoltaics with cyclopenteno[60]fullerene monoadducts as n-type materials display superior power conversion efficiency than with PC61BM
(2016-08-20)
Chuang, Shih-Ching
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Tseng, Po-Yen
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應用化學系
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Department of Applied Chemistry
Dispersible nanocomposites of functionalized graphene oxide reinforced polyethylene for packaging application
(2016-08-20)
Toh, Guat Yee
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Ong, Hui
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Bindumadhavan, Kartick
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Doong, Ruey-An
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環境工程研究所
Flexible and miniaturized msm biomolecular photodetector for hydrogen peroxide sensing via chemiluminescence
(2016-08-20)
Lin, Ching-Chang
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Liu, Lai-Yi
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Sun, Wen-Hsien
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Liu, Shuenyu
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Cheng, Chieh
Development of molybdenum disulphide-graphene quantum dots nanostructure for electrochemical applications
(2016-08-20)
Bindumadhavan, Kartick
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Sahu, Rama
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Doong, Ruey-An
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環境工程研究所
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Institute of Environmental Engineering
Enhanced reactivity of metal/metal oxide-porous carbon nanocomposites for electrochemical and photocatalytic applications
(2016-08-20)
Doong, Ruey-An
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Lin, Chia-Sheng
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Bindumadhavan, Kartick
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環境工程研究所
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Institute of Environmental Engineering
Arranging silver nanowire arrays by microcontact printing for solar cells application
(2016-08-20)
Lin, Ching-Chang
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Sun, Wen-Hsien
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Liu, Shuenyu
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Liu, Lai-Yi
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Cheng, Chieh
Photochemistry and infrared spectrum of single-bridged diborane(5) anion isolated in solid argon
(2016-08-21)
Liu, Meng-Chen
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Chen, Hui-Fen
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Huang, Wei-Jie
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Chin, Chih-Hao
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Chen, Sian-Cong
Three-center two-electron bonds are important for understanding electron-deficient molecules. To examine such a molecule, we produced a diborane(5) anion with a single-bridged structure upon electron bombardment during matrix deposition of Ar containing a small proportion of diborane(6). The diborane(5) anion was destroyed upon photolysis at 180, 220, 385, and 450 nm, but not at 532 nm. Moreover, the possible formation of neutral diborane(5) was observed upon photolysis at 385 and 450 nm, whereas neutral diborane(3) was observed upon photolysis at 180 and 220 nm. The observed line wavenumbers, relative intensities, and isotopic ratios of the diborane(5) anion agreed satisfactorily with those predicted by density functional theory calculations at the B3LYP/aug-cc-pVTZ level of theory. Thus, this method produced the boron hydride anion of interest with few other fragments, which enabled us to clearly identify the IR spectrum of the diborane(5) anion. Published by AIP Publishing.
交大e-News第215期-交大研發魚肉鮮度即時感測器一分鐘即知水產鮮不鮮
(2016-08-22)
國立交通大學秘書室
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Secretariat
Physical Realization of von Neumann Lattices in Rotating Bose Gases with Dipole Interatomic Interactions
(2016-08-22)
Cheng, Szu-Cheng
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Jheng, Shih-Da
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物理研究所
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Institute of Physics
This paper reports a novel type of vortex lattice, referred to as a bubble crystal, which was discovered in rapidly rotating Bose gases with long-range interactions. Bubble crystals differ from vortex lattices which possess a single quantum flux per unit cell, while atoms in bubble crystals are clustered periodically and surrounded by vortices. No existing model is able to describe the vortex structure of bubble crystals; however, we identified a mathematical lattice, which is a subset of coherent states and exists periodically in the physical space. This lattice is called a von Neumann lattice, and when it possesses a single vortex per unit cell, it presents the same geometrical structure as an Abrikosov lattice. In this report, we extend the von Neumann lattice to one with an integral number of flux quanta per unit cell and demonstrate that von Neumann lattices well reproduce the translational properties of bubble crystals. Numerical simulations confirm that, as a generalized vortex, a von Neumann lattice can be physically realized using vortex lattices in rapidly rotating Bose gases with dipole interatomic interactions.
Color-conversion efficiency enhancement of quantum dots via selective area nano-rods light-emitting diodes
(2016-08-22)
Liu, Che-Yu
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Chen, Tzu-Pei
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Kao, Tsung Sheng
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Huang, Jhih-Kai
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Kuo, Hao-Chung
A large enhancement of color-conversion efficiency of colloidal quantum dots in light-emitting diodes (LEDs) with novel structures of nanorods embedded in microholes has been demonstrated. Via the integration of nano-imprint and photolithography technologies, nanorods structures can be fabricated at specific locations, generating functional nanostructured LEDs for high-efficiency performance. With the novel structured LED, the color-conversion efficiency of the existing quantum dots can be enhanced by up to 32.4%. The underlying mechanisms can be attributed to the enhanced light extraction and nonradiative energy transfer, characterized by conducting a series of electroluminescence and time-resolved photoluminescence measurements. This hybrid nanostructured device therefore exhibits a great potential for the application of multi-color lighting sources. (C) 2016 Optical Society of America
Effective optimization and analysis of white LED properties by using nano-honeycomb patterned phosphor film
(2016-08-22)
Lin, Huang-Yu
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Wang, Sheng-Wen
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Lin, Chien-Chung
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Tu, Zong-Yi
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Lee, Po-Tsung
This study presents an approach for patterning a polydimethylsiloxane (PDMS) phosphor film with a photonic crystal nano-honeycomb structure on a blue chip package. A phosphor film with a nano-honeycomb structure was patterned and transferred using a nanosphere and used for fabricating remote white light-emitting diodes (w-LEDs). The angular correlated color temperature deviation of the remote phosphor LED could be improved by varying nano-honeycomb structure pitches (450, 750, and 1150 nm). In particular, w-LED samples with excellent color uniformity (Delta CCT ranging from 940 to 440 K) were fabricated from 750-nm w-LED samples with nano-honeycomb-patterned tops. (C) 2016 Optical Society of America