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Layer V

Zhe Yang, Chao Shan, Weiming Zhang, Zhao Jiang, Xiaohong Guan, Bingcai Pan
Enhanced removal of As(V) and Se(VI) by zero valent iron (ZVI) has been recently revealed by using H2O2 as the corrosion accelerator, however, the detailed performance of such enhanced removal in ZVI column as well as the underlying mechanism is still unclear. In this study, the temporospatial evolution of As(V) and Se(VI) along a self-designed ZVI/H2O2 column in down-flow mode was systematically investigated. The variations of concerned aqueous parameters (pH, ORP, H2O2, Fe(2+), As, and Se) were monitored at different positions along the column throughout the experiments...
October 12, 2016: Water Research
Emanuel Carlos, Rita Branquinho, Asal Kiazadeh, Pedro Barquinha, Rodrigo Martins, Elvira Fortunato
Solution processing of amorphous metal oxides has been lately used as an option to implement in flexible electronics allowing a reduction of the associated costs and high performance. However the research has focused more on semiconductor layer rather than on the insulator layer that is related to the stability and performance of the devices. This work aims to evaluate amorphous aluminum oxide thin films produced by combustion synthesis and the influence of far ultraviolet (FUV) irradiation on properties of the insulator on thin film transistors (TFTs) using different semiconductors, in order to have compatibility with flexible substrates...
October 20, 2016: ACS Applied Materials & Interfaces
Xuexia He, WaiLeong Chow, Fucai Liu, BengKang Tay, Zheng Liu
2D transition metal dichalcogenides are promising channel materials for the next-generation electronic device. Here, vertically 2D heterostructures, so called van der Waals solids, are constructed using inorganic molybdenum sulfide (MoS2 ) few layers and organic crystal - 5,6,11,12-tetraphenylnaphthacene (rubrene). In this work, ambipolar field-effect transistors are successfully achieved based on MoS2 and rubrene crystals with the well balanced electron and hole mobilities of 1.27 and 0.36 cm(2) V(-1) s(-1) , respectively...
October 20, 2016: Small
D P Datta, V Siva, S Varma, D Kanjilal, P K Sahoo
A nanodot array morphology gradually develops on SiO2 surface when a thin bi-layer of Au and Si undergoes ion irradiation. An increasing amount of gold silicide is detected as islands on the insulator surface evolve into nanodots as a function of increasing ion fluence. Different stages of evolution from islands to nanodots are found to be driven by the localized melting of Au along the ion-track and dewetting of the metal film. Dewetting is accompanied by sputter-erosion and mixing of Au and Si at the bi-layer interface due to ion energy deposition...
October 20, 2016: Physical Chemistry Chemical Physics: PCCP
Radu Prejbeanu, Dan V Poenaru, Andrei Dan Balanescu, Mihail-Lazar Mioc
PURPOSE: The medial plica (MP) is a normal anatomic structure consisting of a fold in the synovial layer of the joint. Arthroscopic resection is currently used as a gold standard procedure in patients with medial plica syndrome (MPS), but there are few prospective studies that analyze the long-term functional outcomes of plica resection. METHODS: The purpose of this prospective study was to evaluate the long-term results of arthroscopic resection of the medial plicae of the knee...
October 20, 2016: International Orthopaedics
Morahem Ashengroph
The present study has been conducted towards isolation of moderately halophilic bacteria capable of transforming caffeine into theobromine. A total of 45 caffeine-degrading moderate halophiles were enriched from hypersaline lakes and examined for the biotransformation of caffeine to theobromine by thin-layer chromatography (TLC) and high-performance liquid chromatography analyses. Strain GL6, giving the highest yield of theobromine, was isolated from the Hoz Soltan Lake, 20 % w/v salinity, central Iran, and identified as Salinivibrio costicola based on morphological and biochemical features as well as its 16S rRNA gene sequence analysis (GeneBank Accession No...
October 19, 2016: Current Microbiology
Ashish Dubey, Nirmal Adhikari, Swaminathan Venkatesan, Shaopeng Gu, Devendra Khatiwada, Qi Wang, Lal Mohammad, Mukesh Kumar, Qiquan Qiao
This data in brief includes forward and reverse scanned current density-voltage (J-V) characteristics of perovskite solar cells with PDPP3T and spiro-OMeTAD as HTL, stability testing conditions of perovskite solar cell shelf life in air for both PDPP3T and spiro-OMeTAD as HTL as per the description in Ref. [1], and individual J-V performance parameters acquired with increasing time exposed in ambient air are shown for both type of devices using PDPP3T and spiro-OMeTAD as HTL. The data collected in this study compares the device stability with time for both PDPP3T and spiro-OMeTAD based perovskite solar cells and is directly related to our research article "solution processed pristine PDPP3T polymer as hole transport layer for efficient perovskite solar cells with slower degradation" [2]...
June 2016: Data in Brief
V A Doss, Dharaniyambigai Kuberapandian
BACKGROUND: The objective of this study is to develop a new animal model based on signaling pathways to understand the pathophysiology, therapy of depression, and to investigate the antidepressant activity of Enicostemma littorale which is not yet established. METHODS: Animal models of depression were raised by physical methods and administration of methyl isobutyl ketone (100 mg/kg b.w., i.p.,) and a protein tyrosine phosphatase inhibitor, sodium orthovanadate (30 mg/kg b...
2016: International Journal of Preventive Medicine
Fredrik Elinder, Michael Madeja, Hugo Zeberg, Peter Århem
The transmembrane voltage needed to open different voltage-gated K (Kv) channels differs by up to 50 mV from each other. In this study we test the hypothesis that the channels' voltage dependences to a large extent are set by charged amino-acid residues of the extracellular linkers of the Kv channels, which electrostatically affect the charged amino-acid residues of the voltage sensor S4. Extracellular cations shift the conductance-versus-voltage curve, G(V), by interfering with these extracellular charges...
October 18, 2016: Biophysical Journal
Cheng-Yin Wang, Canek Fuentes-Hernandez, Minseong Yun, Ankit K Singh, Amir Dindar, Sangmoo Choi, Samuel Graham, Bernard Kippelen
We report on top-gate OFETs with a bilayer gate dielectric comprising an Al2O3/HfO2 nanolaminate layer grown by atomic layer deposition and an amorphous fluoropolymer layer (CYTOP). Top-gate OFETs display average carrier mobility values of 0.9 ± 0.2 cm(2)/Vs and threshold voltage values of -1.9 ± 0.5 V and high operational and environmental stability under different environmental conditions such as damp air at 50 °C (80% relative humidity) and prolonged immersion in water at a temperature up to 95 °C.
October 19, 2016: ACS Applied Materials & Interfaces
R McIntosh, S J Henley, S R P Silva, S Bhattacharyya
Whilst resonant transmission is well understood and can be fully harnessed for crystalline superlattices, a complete picture has not yet emerged for disordered superlattices. It has proven difficult to tune resonant transmission in disordered diamond-like carbon (DLC) superlattices as conventional models are not equipped to incorporate significant structural disorder. In this work, we present concurrent experimental and theoretical analysis which addresses resonant transmission in DLC superlattices. Devices were fabricated by growing alternate layers of DLC with different percentages of sp(3) hybridized carbon...
October 19, 2016: Scientific Reports
Genmao Huang, Lian Duan, Yunlong Zhao, Yunge Zhang, Guifang Dong, Deqiang Zhang, Yong Qiu
Thin-film transistors (TFTs) with high mobility and good uniformity are attractive for next-generation flat panel displays. In this work, solution-processed polycrystalline zinc tin oxide (ZTO) thin film with well-ordered microstructure is prepared, thanks to the synergistic effect of water addition and step heating. The step heating treatment other than direct annealing induces crystallization, while adequate water added to precursor solution further facilitates alloying and densification process. The optimal polycrystalline ZTO film is free of hierarchical sublayers, and featured with an increased amount of ternary phases, as well as a decreased fraction of oxygen vacancies and hydroxides...
October 19, 2016: Nanotechnology
Kechao Tang, Andrew C Meng, Ravi Droopad, Paul C McIntyre
Intentional oxidation of an As2-decapped (100) In0.57Ga0.43As substrate by additional H2O dosing during initial Al2O3 gate dielectric atomic layer deposition (ALD) increases the interface trap density (Dit), lowers the band edge photoluminescence (PL) intensity, and generates Ga-oxide detected by x-ray photoelectron spectroscopy (XPS). Aberration-corrected high resolution transmission electron microscopy (TEM) reveals formation of an amorphous interfacial layer which is distinct from the Al2O3 dielectric and which is not present without the additional H2O dosing...
October 19, 2016: ACS Applied Materials & Interfaces
Chih-Ming Chen, Zheng-Kun Lin, Wei-Jie Huang, Sheng-Hsiung Yang
In this work, we demonstrate a novel carrier transporting combination made of tungsten trioxide (WO3) nanomaterials and Cs2CO3/PCBM buffer bilayer for the fabrication of perovskite solar cells (PSCs). Two different types of WO3, including nanoparticles and nanorods, were prepared by sol-gel process and hydrothermal method, respectively. Cs2CO3/PCBM buffer bilayer was inserted between WO3 and perovskite layers to improve charge transfer efficiency and formation of pinhole-free perovskite layer. Besides, the leakage current of the devices containing Cs2CO3/PCBM buffer bilayer was significantly suppressed...
December 2016: Nanoscale Research Letters
Qiqian Gao, Shihan Sun, Xuesong Li, Xueyu Zhang, Lianfeng Duan, Wei Lü
In present work, two-dimensional g-C3N4 was used to modify TiO2 nanorod array photoanodes for CdS quantum dot-sensitized solar cells (QDSSCs), and the improved cell performances were reported. Single crystal TiO2 nanorods are prepared by hydrothermal method on transparent conductive glass and spin-coated with g-C3N4. CdS quantum dots were deposited on the g-C3N4 modified TiO2 photoanodes via successive ionic layer adsorption and reaction method. Compared with pure TiO2 nanorod array photoanodes, the g-C3N4 modified photoanodes showed an obvious improvement in cell performances, and a champion efficiency of 2...
December 2016: Nanoscale Research Letters
F M Elli, V Boldrin, A Pirelli, A Spada, G Mantovani
All tissues and organs derive from stem cells, which are undifferentiated cells able to differentiate into specialized cells and self-renewal. In mammals, there are embryonic stem cells that generate germ layers, and adult stem cells, which act as a repair system for the body and maintain the normal turnover of regenerative organs. Mesenchymal stem cells (MSCs) are nonhematopoietic adult multipotent cells, which reside in virtually all postnatal organs and tissues, and, under appropriate in vitro conditions, are capable to differentiate into osteogenic, adipogenic, chondrogenic, myogenic, and neurogenic lineages...
October 18, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
Xiongwen Zheng, Xianshu Wang, Xia Cai, Lidan Xing, Mengqing Xu, Youhao Liao, Xiaoping Li, Weishan Li
Phenyl vinyl sulfone (PVS) as a novel electrolyte additive is used to construct a protective interface film on layered lithium-rich cathode. Charge-discharge cycling demonstrates that the capacity retention of Li(Li0.2Mn0.54Ni0.13Co0.13)O2 after 240 cycles at 0.5 C between 2.0 and 4.8 V (vs. Li/Li(+)) reaches about 80 % by adding 1 wt. % PVS into a standard (STD) electrolyte, 1.0 M LiPF6 in EC/EMC/DEC (3/5/2 in weight). This excellent performance is attributed to the special molecular structure of PVS, compared to the additives that have been reported in literature...
October 18, 2016: ACS Applied Materials & Interfaces
Tatjana Taubitz, Laura-Pia Steinbrenner, Alexander V Tschulakow, Antje Biesemeier, Sylvie Julien-Schraermeyer, Ulrich Schraermeyer
PURPOSE: Anti-vascular endothelial growth factor (VEGF) drugs are used to treat neovascular eye diseases. Some of these drugs contain Fc fragments (Fc), but it is unknown how their mode of action is influenced by Fc. Therefore, this study investigated the effects of Fc on rat eyes after intravitreal injection. METHODS: Eighteen Long-Evans rats were intravitreally injected with sterile, biotin-labeled rat Fc (9.1 μg in 5 μl PBS). For control, 5 μl PBS was injected in another nine rats...
October 17, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
A A Baker, A I Figueroa, D Pingstone, V K Lazarov, G van der Laan, T Hesjedal
We present a study of the interaction mechanisms in magnetic trilayer structures with an MgO barrier grown by molecular beam epitaxy. The interlayer exchange coupling, Aex, is determined using SQUID magnetometry and ferromagnetic resonance (FMR), displaying an unexpected oscillatory behaviour as the thickness, tMgO, is increased from 1 to 4 nm. Transmission electron microscopy confirms the continuity and quality of the tunnelling barrier, eliminating the prospect of exchange arising from direct contact between the two ferromagnetic layers...
October 18, 2016: Scientific Reports
Christopher Batchelor-McAuley, Christopher A Little, Stanislav V Sokolov, Enno Kätelhön, Giorgia Zampardi, Richard G Compton
The lipid soluble fluorophore Nile Red (9-diethylamino-5-benzo[α]phenoxazinone) is used to fluorescently and electrochemically label an organic-in-water emulsion, where the organic phase is an ionic liquid [P6,6,6,14][FAP]/toluene mixture. The optical detection of the individual droplets is enabled facilitating the in-situ tracking and sizing of the suspended particles (average diameter = 530 nm, interquartile range = 180 nm). Through the use of a combined thin-layer optical/electrochemical cell, the irreversible accumulation of the droplets at an optically opaque carbon fibre electrode (diameter ~ 7...
October 17, 2016: Analytical Chemistry
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