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Optofluidic tunable lenses using laser-induced thermal gradient

25-Nov-2015 | Qingming Chen; Aoqun Jian; Zhaohui Li; Xuming Zhang, Lab on a Chip, 2015

This paper reports a new design of optofluidic tunable lens using a laser-induced thermal gradient. It makes use of two straight chromium strips at the bottom of the microfluidic chamber to absorb the continuous pump laser to heat up the moving benzyl alcohol solution, creating a 2D refractive ...


Electrochemically aminated glassy carbon electrode for simultaneous determination of hydroquinone and catechol

25-Nov-2015 | xiuyun wang; Min Xi; Mengmeng Guo; Fangmeng Sheng; Guang Xiao; Shuo Wu; Shunichi Uchiyama; Hiroaki Matsuura, Analyst, 2015

In this contribution, a very simple and reliable strategy based on the easy modification of glassy carbon electrode (GCE) by pre-electrolyzing GCE in ammonium carbamate aqueous solution was employed for the simultaneous determination of hydroquinone (HQ) and catechol (CC). Compared with bare GCE, ...


Contribution of Monomeric Anthocyanins to the Color of Young Red Wine: Statistical and Experimental Approaches

20-Nov-2015 | Fu Liang Han, Zheng Li, Yan Xu, Journal of Food Science, 2015

ABSTRACT Monomeric anthocyanin contributions to young red wine color were investigated using partial least square regression (PLSR) and aqueous alcohol solutions in this study. Results showed that the correlation between the anthocyanin concentration and the solution color fitted in a ...


SERS of the anti‐inflammatory drug piroxicam adsorbed on the surface of silver or gold colloids as nanocarrier model

20-Nov-2015 | M. Hernandez, E. Corda, J. V. Garcia‐Ramos, C. Domingo, P. Sevilla, Journal of Raman Spectroscopy, 2015

Piroxicam is a non‐steroidal anti‐inflammatory drug actually used with limitations because of serious side effects. It is poorly soluble in pure water and exhibit a minimum of four conformers according to the pH conditions of the solution, but not all of them are medically active. In this study, ...


Floating photovoltaic arrays to power the mining industry: A case study for the McFaulds lake (Ring of Fire)

20-Nov-2015 | Kim Trapani, Dean L. Millar, Environmental Progress, 2015

The article looks at the integration of crystalline and thin film (a‐Si) floating photovoltaic (PV) arrays for electricity generation in remote mine sites. Floating PV arrays rather than regular ground mounted PV arrays are considered more suitable for the site because it decreases the ...


Insight into Al existing form and its role on microstructure and properties of Cr1−xAlxN films

20-Nov-2015 | Yingying Fu, Hongxuan Li, Li Ji, Xiaohong Liu, Liu Liu, Huidi Zhou, Jianmin Chen, Surface and Interface Analysis, 2015

A series of Cr1−xAlxN (where x denotes the atom fraction of Al in Cr1−xAlxN film) films with different Al contents have been deposited by unbalanced reactive magnetron sputtering technique. The chemical composition, microstructure, surface morphology, cross‐sectional structure, mechanical ...


Resonance Raman spectroscopy studies on photoinduced AgTCNQF4 charge transfer and its electrical switching behavior

20-Nov-2015 | Jing Wang, Weiqing Xu, Shuping Xu, Journal of Raman Spectroscopy, 2015

The photoinduced charge transfer (CT) phenomenon of a metal–organic complex, Ag ion‐coordinated tetrafluorotetracyano‐p‐quinodimethane (AgTCNQF4), produced by a solution reaction of immersing an Ag deposited film into TCNQF4 acetonitrile solution, was studied by the resonance Raman spectroscopy. ...


[Report] Open-ocean fish reveal an omnidirectional solution to camouflage in polarized environments

20-Nov-2015 | Parrish C. Brady; Alexander A. Gilerson; George W. Kattawar; James M. Sullivan; Michael S. Twardowski; Heidi M. Dier ..., Science , 2015

Despite appearing featureless to our eyes, the open ocean is a highly variable environment for polarization-sensitive viewers. Dynamic visual backgrounds coupled with predator encounters from all possible directions make this habitat one of the most challenging for camouflage. We tested ...


From static micrographs to particle aggregation dynamics in three dimensions

19-Nov-2015 | H. HÄBEL, A. SÄRKKÄ, M. RUDEMO, C. HAMNGREN BLOMQVIST, E. OLSSON, C. ABRAHAMSSON, M. NORDIN, Journal of Microscopy, 2015

Summary Studies on colloidal aggregation have brought forth theories on stability of colloidal gels and models for aggregation dynamics. Still, a complete link between developed frameworks and obtained laboratory observations has to be found. In this work, aggregates of silica nanoparticles ...


Sweeping of hydrophobic amines under inhomogeneous electric field and low surfactant concentration in micellar electrokinetic chromatography

19-Nov-2015 | Krzesimir Ciura, Piotr Kowalski, Joanna Nowakowska, Michał Markuszewski, Tomasz Bączek, Szymon Dziomba, ELECTROPHORESIS, 2015

The influence of sample matrix on sample sweeping in micellar electrokinetic chromatography (MEKC) was examined in the presented manuscript. Significant focusing effect was observed for relatively hydrophobic cationic compounds (emetine, strychnine and quinine) using high ionic strength sample ...


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