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1,088 Newest Publications about the topic solution

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Adsorption of Lysozyme on Silver and Its Influence on Silver Release

14-11-2014 | Xin Wang; Gunilla Herting; Inger Odnevall Wallinder; Eva Blomberg, Langmuir, 2014

Silver is increasingly used in antimicrobial coatings of biomedical devices and implants to hinder infections. As proteins have been shown to largely influence the extent of released metals from various metal surfaces at biological conditions, silver may also be influenced in the same way. The ...

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Nanostructured Lipid Carriers: Effect of Solid Phase Fraction and Distribution on the Release of Encapsulated Materials

14-11-2014 | Nily Dan, Langmuir, 2014

Emulsions, solid lipid nanoparticles (SLN), and nanostructured lipid carriers (NLC) containing a mix of liquid and solid domains are of interest as encapsulation vehicles for hydrophobic compounds. Studies of the release rate from these particles yield contradictory results: Some find that ...

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Cyclodextrins and Surfactants in Aqueous Solution above the Critical Micelle Concentration: Where Are the Cyclodextrins Located?

13-11-2014 | Marina Tsianou; Ankitkumar I. Fajalia, Langmuir, 2014

Cyclodextrins (CDs) are known to bind surfactant molecules below the surfactant critical micelle concentration (CMC); however, interactions of CDs with surfactant micelles (above the CMC) are not well understood. In particular, direct structural evidence of the location of CDs in the different ...

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Anomalous Diffusion in Thermoresponsive Polymer–Clay Composite Hydrogels Probed by Wide-Field Fluorescence Microscopy

13-11-2014 | Beate Stempfle; Anna Große; Bernhard Ferse; Karl-Friedrich Arndt; Dominik Wöll, Langmuir, 2014

Thermoresponsive materials exhibit an enormous potential for tissue engineering, separation systems, and drug delivery. We investigated the diffusion of laponite clay nanoparticles, which serve as physical cross-linkers to achieve improved material properties in poly(N-isopropylacrylamide) ...

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Microcontact Imprinting of Algae for Biofuel Systems: The Effects of the Polymer Concentration

13-11-2014 | Mei-Hwa Lee; James L. Thomas; Ming-Yuan Lai; Ching-Ping Shih; Hung-Yin Lin, Langmuir, 2014

Microcontact imprinting of cells often involves the deposition of a polymer solution onto a monolayer cell stamp, followed by solvent evaporation. Thus, the concentration of the polymer may play an important role in the final morphology and efficacy of the imprinted film. In this work, various ...

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Radiolytic Method as a Novel Approach for the Synthesis of Nanostructured Conducting Polypyrrole

13-11-2014 | Zhenpeng Cui; Cecilia Coletta; Alexandre Dazzi; Patrice Lefrançois; Matthieu Gervais; Stéphane Néron; Samy Remita, Langmuir, 2014

In this study, a novel and extremely facile method for the synthesis of conducting polypyrrole (PPy) was achieved in aqueous solution. This radiolytic method is totally free of template and environmentally friendly compared with traditional chemical methods. According to ultraviolet–visible ...

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Colloidal Stability of Citrate and Mercaptoacetic Acid Capped Gold Nanoparticles upon Lyophilization: Effect of Capping Ligand Attachment and Type of Cryoprotectants

12-11-2014 | Alaaldin M. Alkilany; Samer R. Abulateefeh; Kayla K. Mills; Alaa I. Bani Yaseen; Majd A. Hamaly; Hatim S. Alkhatib; ..., Langmuir, 2014

For various applications of gold nanotechnology, long-term nanoparticle stability in solution is a major challenge. Lyophilization (freeze–drying) is a widely used process to convert labile protein and various colloidal systems into powder for improved long-term stability. However, the ...

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Understanding the Selective Etching of Electrodeposited ZnO Nanorods

12-11-2014 | Benoit N. Illy; Bridget Ingham; Michael F. Toney; Iris Nandhakumar; Mary P. Ryan, Langmuir, 2014

ZnO nanotubes were prepared by selective dissolution of electrodeposited nanorods. The effect of solution pH, rod morphology, and chloride ion concentration on the dissolution mechanism was studied. The selective etching was rationalized in terms of the surface energy of the different ZnO crystal ...

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Effects of Anions on the Electrodeposition of Cobalt on Pt(111) Electrode

12-11-2014 | Yenchung Kuo; Weicheng Liao; ShuehLin Yau, Langmuir, 2014

Voltammetry and in-situ scanning tunneling microscopy (STM) were used to examine electrodeposition of cobalt (Co) on a stationary Pt(111) electrode in 0.1 M K2SO4 + 1 mM H2SO4 + 10 mM CoSO4 (or the sulfate solution) without and with 10 mM chloride (the chloride solution). Under- and overpotential ...

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Model for the Phase Transfer of Nanoparticles Using Ionic Surfactants

11-11-2014 | Chakra P. Joshi; Terry P. Bigioni, Langmuir, 2014

Ionic surfactants are widely used for the phase transfer of nanoparticles from aqueous to organic phases; however, a model that can be used to select ionic surfactants based on the nanoparticle solution properties has yet to be established. Here, we have studied the phase transfer of a variety of ...

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