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Shear banding in semidilute entangled polymer solutions
Publication date: Available online 3 January 2019Source: Current Opinion in Colloid & Interface ScienceAuthor(s): N. GermannAbstractShear banding in semidilute polymer solutions and other soft materials is one of the most intensely debated topics in current rheology. By means of rheo-optical experiments, physical modeling, and numerical simulations, researchers have started to develop a more thorough understanding of this flow instability within the past few years. Nevertheless, much effort is still required to identify the exact microscopic mechanisms leading to shear band formation and to clarify whether the phenomenon i...
Source: Current Opinion in Colloid and Interface Science - January 3, 2019 Category: Chemistry Source Type: research

Microfluidic fabrication with selective laser-induced etching: New opportunities in fluid dynamics and rheology
Publication date: Available online 22 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Noa Burshtein, San To Chan, Kazumi Toda-Peters, Amy Q. Shen, Simon J. HawardAbstractMicrofluidics provides a versatile platform for handling small volumes of fluids at small length scales. From a fluid dynamics perspective, microfluidics provide access to a regime of very high deformation rates γ˙ at moderate to negligible Reynolds numbers Re. For viscoelastic fluid flows, the resulting high Weissenberg numbers Wi=τγ˙, where τ is the fluid characteristic time, means flow occurs at high elasticity number...
Source: Current Opinion in Colloid and Interface Science - December 22, 2018 Category: Chemistry Source Type: research

Protein-surface interactions at the nanoscale: Atomistic simulations with implicit solvent models
Publication date: June 2019Source: Current Opinion in Colloid & Interface Science, Volume 41Author(s): David C. Malaspina, Leonor Pérez-Fuentes, Carlos Drummond, Delfi Bastos-González, Jordi FaraudoAbstractA full molecular-level understanding of protein adsorption in important situations such as the formation of protein films at solid/liquid interfaces or the formation of a protein corona over inorganic nanoparticles is still lacking. All-atomic implicit solvent molecular dynamics (MD) simulations, which are successfully employed in many related protein studies (such as protein folding for example) are emerging also as a...
Source: Current Opinion in Colloid and Interface Science - December 20, 2018 Category: Chemistry Source Type: research

Formation of a protein corona around nanoparticles
Publication date: Available online 18 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Vladimir P. ZhdanovAbstractIn biofluids, nanoparticles rapidly become to be surrounded by a protein corona. This phenomenon started to attract attention ten years ago. Since then, this subfield of colloid and interface science was among the most rapidly expanding and progressing. Due to its strong relation to biology and applications, this area is rich with various questions to explore. The reviews of the corresponding experiments are already numerous. Herein, I focus on the related theory including conventio...
Source: Current Opinion in Colloid and Interface Science - December 18, 2018 Category: Chemistry Source Type: research

Multi-scale modeling of Proteins interaction with Functionalized Nanoparticles
Publication date: Available online 13 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Giorgia Brancolini, Valentina TozziniAbstractUnderstanding protein interactions with inorganic nanoparticle is central to the rational design of new tools in biomaterial sciences, nanobiotechnology and nanomedicine. Theoretical modeling and simulations provide complementary approaches for experimental studies, and are applied for exploring protein–particle surface binding mechanisms, the determinants of binding specificity towards different surfaces, and the thermodynamics and kinetics of adsorption. The us...
Source: Current Opinion in Colloid and Interface Science - December 14, 2018 Category: Chemistry Source Type: research

The interaction of peptides and proteins with nanostructures surfaces: a challenge for nanoscience
Publication date: Available online 14 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Giorgia Brancolini, Luca Bellucci, Maria Celeste Maschio, Rosa Di Felice, Stefano CorniAbstractThe impact of nanotechnologies in biomedicine and biotechnology is becoming more and more evident. It imposes practical challenges, for instance raising specific issues on the biocompatibility of nanostructures. Nanoparticles are characterized by a high surface-to-volume ratio, which makes them reactive to foreign species. Thus, when proteins or peptides approach an inorganic nanoparticle, as well as a flat surface,...
Source: Current Opinion in Colloid and Interface Science - December 14, 2018 Category: Chemistry Source Type: research

Multiscale modeling and simulations of protein adsorption: progresses and perspectives
Publication date: Available online 14 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Xuebo Quan, Jie Liu, Jian ZhouAbstractProtein adsorption, which shows wide prospects in many practical applications such as biosensors, biofuel cells and biomaterials, has long been identified as a very complex problem in interface science. Here, we present a review on the multiscale modelling and simulations methods of protein adsorption on surfaces with different properties. Firstly, various simulation algorithms (replica exchange, metadynamics, TIGER2A and PSOVina) and protein models (colloidal, coarse-gra...
Source: Current Opinion in Colloid and Interface Science - December 14, 2018 Category: Chemistry Source Type: research

Molecular simulation of protein adsorption and conformation at gas-liquid, liquid–liquid and solid–liquid interfaces
Publication date: June 2019Source: Current Opinion in Colloid & Interface Science, Volume 41Author(s): George Dalkas, Stephen R. EustonAbstractThe adsorption of proteins at surfaces and interfaces is important in a wide range of industries. Understanding and controlling the conformation of adsorbed proteins at surfaces is critical to stability and function in many technological applications including foods and biomedical testing kits or sensors. Studying adsorbed protein conformation is difficult experimentally and so over the past few decades researchers have turned to computer simulation methods to give information at th...
Source: Current Opinion in Colloid and Interface Science - December 14, 2018 Category: Chemistry Source Type: research

Editorial Board
Publication date: November 2018Source: Current Opinion in Colloid & Interface Science, Volume 38Author(s): (Source: Current Opinion in Colloid and Interface Science)
Source: Current Opinion in Colloid and Interface Science - December 13, 2018 Category: Chemistry Source Type: research

Classical atomistic simulations of protein adsorption on carbon nanomaterials
Publication date: Available online 4 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Fabio Ganazzoli, Giuseppina RaffainiAbstractCarbon nanomaterials are receiving an increasingly large interest in a variety of fields, including also nanomedicine. In this area, much attention is devoted to investigating and modeling the behavior of these nanomaterials when they interact with biological fluids and with biological macromolecules, in particular proteins and oligopeptides. The interaction with these molecules is in fact crucial to understand and predict the efficacy of nanomaterials as drug carrie...
Source: Current Opinion in Colloid and Interface Science - December 5, 2018 Category: Chemistry Source Type: research

How Protonation Modulates the Interaction between Proteins and pH-Responsive Hydrogel Films
Publication date: Available online 4 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Gabriel S. Longo, Néstor A. Pérez-Chávez, I. SzleiferAbstractHydrogels of pH-responsive polymers are promising candidates for the design of functional biomaterials. In this context, understanding the complexity of the interaction between these materials and proteins is essential. A recently developed molecular-level equilibrium theory for protein adsorption on hydrogels of cross-linked polyacid chains allows for modeling size, shape, charge distribution, protonation state and conformational degrees of freed...
Source: Current Opinion in Colloid and Interface Science - December 5, 2018 Category: Chemistry Source Type: research

Molecular Simulation of Protein Adsorption and Conformation at Gas-Liquid, Liquid-Liquid and Solid-Liquid Interfaces
Publication date: Available online 4 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): George Dalkas, Stephen R. EustonAbstractThe adsorption of proteins at surfaces and interfaces is important in a wide range of industries. Understanding and controlling the conformation of adsorbed proteins at surfaces is critical to stability and function in many technological applications including foods and biomedical testing kits or sensors. Studying adsorbed protein conformation is difficult experimentally and so over the past few decades researchers have turned to computer simulation methods to give infor...
Source: Current Opinion in Colloid and Interface Science - December 5, 2018 Category: Chemistry Source Type: research

Corrigendum to “Specific-ion Effects in Non-Aqueous Systems” [Curr Opin Colloid Interface Sci 23 (June 2016) 82–93]
Publication date: Available online 1 December 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Virginia Mazzini, Vincent S.J. Craig (Source: Current Opinion in Colloid and Interface Science)
Source: Current Opinion in Colloid and Interface Science - December 2, 2018 Category: Chemistry Source Type: research

Machine learning antimicrobial peptide sequences: Some surprising variations on the theme of amphiphilic assembly
Publication date: November 2018Source: Current Opinion in Colloid & Interface Science, Volume 38Author(s): Michelle W. Lee, Ernest Y. Lee, Andrew L. Ferguson, Gerard C.L. WongAbstractAntimicrobial peptides (AMPs) collectively constitute a key component of the host innate immune system. They span a diverse space of sequences and can be α-helical, β-sheet, or unfolded in structure. Despite a wealth of knowledge about them from decades of experiments, it remains difficult to articulate general principles governing such peptides. How are they different from other molecules that are also cationic and amphiphilic? What other f...
Source: Current Opinion in Colloid and Interface Science - November 29, 2018 Category: Chemistry Source Type: research

Editorial overview: Colloids and surfaces in biology
Publication date: Available online 22 November 2018Source: Current Opinion in Colloid & Interface ScienceAuthor(s): Martin Malmsten, Stefan Zauscher (Source: Current Opinion in Colloid and Interface Science)
Source: Current Opinion in Colloid and Interface Science - November 29, 2018 Category: Chemistry Source Type: research