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739 Aktuelle Fachpublikationen zum Thema temperature

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Liquid Marbles Stabilized by Charged Polymer Latexes: How Does the Drying of the Latex Particles Affect the Properties of Liquid Marbles?

16.10.2014 | Guanqing Sun; Yifeng Sheng; Jie Wu; Guanghui Ma; To Ngai, Langmuir, 2014

The coating of solid particles on the surface of liquid in air makes liquid marbles a promising approach in the transportation of a small amount of liquid. The stabilization of liquid marbles by polymeric latex particles imparts extra triggers such as pH and temperature, leading to the remote ...

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Room Temperature Growth of Ultrathin Au Nanowires with High Areal Density over Large Areas by in Situ Functionalization of Substrate

16.10.2014 | Subhajit Kundu; Annamalai Leelavathi; Giridhar Madras; N. Ravishankar, Langmuir, 2014

Although ultrathin Au nanowires (∼2 nm diameter) are expected to demonstrate several interesting properties, their extreme fragility has hampered their use in potential applications. One way to improve the stability is to grow them on substrates; however, there is no general method to grow these ...

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Physicochemical Behaviors of Cationic Gemini Surfactant (14-4-14) Based Microheterogeneous Assemblies

13.10.2014 | Sibani Das; Indrajyoti Mukherjee; Bidyut K. Paul; Soumen Ghosh, Langmuir, 2014

A comprehensive study of micellization and microemulsion formation of a cationic gemini surfactant (tetramethylene-1,4-bis(dimethyltetradecylammonium bromide; 14-4-14) in the absence or presence of hydrophobically modified polyelectrolyte, sodium carboxymethylcellulose (NaCMC), has been conducted ...

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Smart Polymer Nanoparticles for High-Performance Water-Borne Coatings

07.10.2014 | Susana Piçarra; Alexandra Fidalgo; Aleksander Fedorov; José M. G. Martinho; José Paulo S. Farinha, Langmuir, 2014

Poly(butyl methacrylate) nanoparticles encapsulating a silica precursor, tetraethoxysilane (TEOS), were synthesized by a two-step emulsion polymerization process. We show that TEOS remains mostly unreacted inside the nanoparticles in water but acts both as a plasticizer and cross-linker in films ...

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Adsorption of Zwitterionic Surfactant on Limestone Measured with High-Performance Liquid Chromatography: Micelle–Vesicle Influence

06.10.2014 | David Aaron Nieto-Alvarez; Luis S. Zamudio-Rivera; Erick E. Luna-Rojero; Dinora I. Rodríguez-Otamendi; Adlaí Marín-L ..., Langmuir, 2014

Herein is presented a new methodology to determine the static adsorption of a zwitterionic surfactant on limestone in three different aqueous media [high-performance liquid chromatography (HPLC) water, seawater, and connate water] with the use of HPLC at room temperature and 70 °C. The results ...

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Gold Complexes for Focused-Electron-Beam-Induced Deposition

01.10.2014 | W. F. van Dorp; X. Wu; J. J. L. Mulders; S. Harder; P. Rudolf; J. T. M. De Hosson, Langmuir, 2014

Four gold complexes were tested as a precursor for focused-electron-beam-induced deposition: [ClAuIIIMe2]2, ClAuI(SMe2), ClAuI(PMe3), and MeAuI(PMe3). Complexes [ClAuIIIMe2]2 and MeAuI(PMe3) are volatile, have sufficient vapor pressure at room temperature for deposition experiments, and were ...

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Dynamics of Chemotactic Droplets in Salt Concentration Gradients

29.09.2014 | Jitka Čejková; Matěj Novák; František Štěpánek; Martin M. Hanczyc, Langmuir, 2014

The chemotactic movement of decanol droplets in aqueous solutions of sodium decanoate in response to concentration gradients of NaCl has been investigated. Key parameters of the chemotactic response, namely the induction time and the migration velocity, have been evaluated as a function of the ...

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Drop Impact and Rebound Dynamics on an Inclined Superhydrophobic Surface

29.09.2014 | Yong Han Yeong; James Burton; Eric Loth; Ilker S. Bayer, Langmuir, 2014

Due to its potential in water-repelling applications, the impact and rebound dynamics of a water drop impinging perpendicular to a horizontal superhydrophobic surface have undergone extensive study. However, drops tend to strike a surface at an angle in applications. In such cases, the physics ...

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Cool Microcontact Printing To Fabricate Thermosensitive Microgel Patterns

13.09.2013 | Jiaxi Peng; Dan Zhao; Xiaofeng Tang; Fei Tong; Li Guan; Yapei Wang; Meining Zhang; Tingbing Cao, Langmuir, 2013

A facile method, cool microcontact printing (cool μCP), of fabricating microgel patterns under ambient conditions is developed. By using spontaneously condensed water on the surface of cold items and the phase transition of polymer microgels below the lower critical solution temperature (LCST), a ...

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Electroless Deposition of Platinum Nanoparticles in Room-Temperature Ionic Liquids

13.09.2013 | Da Zhang; Takeyoshi Okajima; Dalin Lu; Takeo Ohsaka, Langmuir, 2013

The electroless deposition of Pt nanoparticles (Pt-NPs) could be carried out by dissolving potassium tetrachloroplatinate(II) (K2[PtCl4]) in 1-ethyl-3-methylimidazolium (EMI+) room-temperature ionic liquids (RTILs) containing bis(trifluoromethylsulfonyl) imide (NTf2–) or tetrafluoroborate (BF4–) ...

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