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The binding of a cationic surfactant (hexadecyltrimethylammonium bromide, CTAB) to a negatively charged natural polysaccharide (pectin) at air-solution interfaces, was investigated on single interfaces and in foams, versus the linear charge…

Soft Condensed Matter · Physics 2010-05-20 Marie-Hélène M. H. Ropers , Bruno Novales , François Boué , Monique A. V. Axelos

Mono-layers of stearic and behenic acids and mixtures of them in different proportions, deposited with the Langmuir-Blodgett technique, were used to study the alignment and the alignment dynamics in nematic liquid crystal cells. A…

Soft Condensed Matter · Physics 2009-10-30 V. S. U. Fazio , L. Komitov , S. T. Lagerwall

The coupled dynamics of two conjugated liquid layers of disparate thicknesses, which coat a solid substrate and are subjected to a transverse temperature gradient, is investigated. The upper liquid layer evolves under the short-wavelength…

Fluid Dynamics · Physics 2016-05-04 Iman Nejati , Mathias Dietzel , Steffen Hardt

The deposition of a monolayer by direct self-assembly from solution of an active spin-crossover (SCO) complex via chemisorption has been achieved starting from the perchlorate salt of Co(II) bis(4-(4-carboxyphenyl)-2,2:6,2-terpyridine).…

Surfactants are amphiphilic molecules that spontaneously self-assemble in aqueous solution into various ordered and disordered phases. Under certain conditions, one-dimensional structures in the form of long, flexible wormlike micelles can…

Soft Condensed Matter · Physics 2018-12-19 Christopher N. Lam , William D. Hong , Changwoo Do , Wei-Ren Chen

Structural moir\'e superstructures arising from two competing lattices may lead to unexpected electronic behavior, such as superconductivity or Mottness. Most investigated moir\'e heterostructures are based on van der Waals (vdW) materials,…

Materials Science · Physics 2023-05-10 Bing Liu , Tim Wagner , Stefan Enzner , Philipp Eck , Martin Kamp , Giorgio Sangiovanni , Ralph Claessen

Thermal annealing of Si/Si1-xSbx/Si amorphous thin film tri-layer samples (x=18 and 24 at%Sb) under 100 bar Ar pressure results in an interesting pattern formation. In pictures, taken by means of cross-sectional transmission electron…

Materials Science · Physics 2009-02-13 A. Csik , G. Erdelyi , G. A. Langer , L. Daroczi , D. L. Beke , J. Nyeki , Z. Erdelyi

Effects of chain length compatibility and molecular ratio on the two-dimensional crystallization of a binary mixed surfactant system with non-identical molecular size and its consequence on retardation to water evaporation are described via…

Soft Condensed Matter · Physics 2025-03-25 Kulsuma Begum , Abhijeet Das , Dinesh O. Shah , Sanjeev Kumar

Controlling the polymorph formation in organic semiconductor thin films by the choice of substrate and deposition temperature is a key factor for targeted device performance. Small molecular semiconductors such as the quadrupolar…

Materials Science · Physics 2022-07-22 Frank Balzer , Tobias Breuer , Gregor Witte , Manuela Schiek

Atomistic simulations are used to study segregation-induced intergranular film formation in Cu-Zr and Cu-Nb alloys. While Cu-Zr forms structurally disordered or amorphous films, ordered films comprised of a second phase usually precipitate…

Materials Science · Physics 2016-11-09 Zhiliang Pan , Timothy J. Rupert

The effective entrapment of Carbon dots (CDs) into a polymer-silica hybrid matrix, formed as free standing transparent flexible films, is presented. CDs of 3 nm mean size with strong photoluminescence are embedded into a silica matrix…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Anastasia Vassilakopoulou , Vasilios Georgakilas , Nikolaos Vainos , Ioannis Koutselas

We discuss mechanical buckling instabilities of a rigid film under compression interacting repulsively with a substrate through a thin fluid layer. The buckling occurs at a characteristic wavelength that increases as the 1/4th power of the…

Soft Condensed Matter · Physics 2009-11-13 Quan Zhang , Thomas A. Witten

Crystallization of thin film materials by exploiting laser induced crystallization has been advancing for the past four decades. This unique thin film technique has been predominantly used in processing thin film materials made of a single…

Applied Physics · Physics 2020-07-31 Brian Giraldo , Wenchang Yeh , Nobuhiko P. Kobayashi

The essence of the method of transformation of ion-plasma streams was disclosed. A phenomenological model of binary alloy films formation was suggested, in the case of a conducting target being sputtered by ions of nongaseous substances. By…

Materials Science · Physics 2012-10-05 A. S. Vus

Langmuir monolayers are advantageous systems used to investigate how lipid membranes get involved in the physiology of many living structures, such as collapse phenomena in alveolar structures. Much work focuses on characterizing the…

Soft Condensed Matter · Physics 2024-01-22 A. R. Carotenuto , A. Gaffney , K. Y. C. Lee , L. Pocivavsek , M. Fraldi , L. Deseri

Interactions between actin, an anionic polyelectrolyte, and lysozyme, a cationic globular protein, have been examined using a combination of synchrotron small-angle x-ray scattering and molecular dynamics simulations. Lysozyme initially…

A soliton model for proton conductivity in Langmuir films is presented. The model contains three real scalar fields describing the hydrogen involved in the conduction, the hydrophilic head of the Langmuir film, and the water. Soliton…

Chemical Physics · Physics 2009-11-07 D. Bazeia , V. B. P. Leite , B. H. B. Lima , F. Moraes

The maximum pressure a two-dimensional surfactant monolayer is able to withstand is limited by the collapse instability towards formation of three-dimensional material. We propose a new description for reversible collapse based on a…

Soft Condensed Matter · Physics 2009-11-07 Weixing Lu , Charles M. Knobler , Robijn F. Bruinsma , Michael Dennin , Michael Twardos

Recent theoretical investigations have indicated that rapid optical cycling should be feasible in complex polyatomic molecules with diverse constituents, geometries and symmetries. However, as a composite molecular mass grows, so does the…

Atomic Physics · Physics 2020-12-18 Konrad Wenz , Ivan Kozyryev , Rees L. McNally , Leland Aldridge , Tanya Zelevinsky

This work discusses the sedimentation stability and aging of aqueous suspension of Laponite in the presence of cetyltrimethylammonium bromide (CTAB). The concentration of Laponite was fixed at the constant level $C_l=2$ %wt, which…

Soft Condensed Matter · Physics 2015-06-16 V. Savenko , L. Bulavin , M. Rawiso , M. Loginov , E. Vorobiev , N. I. Lebovka