geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Interactions and stress relaxation in monolayers of soft nanoparticles at fluid-fluid interfaces


, : Interactions and stress relaxation in monolayers of soft nanoparticles at fluid-fluid interfaces. Physical Review Letters 114(10): 108301-108301

Nanoparticles with grafted layers of ligand molecules behave as soft colloids when they adsorb at fluid-fluid interfaces. The ligand brush can deform and reconfigure, adopting a lens-shaped configuration at the interface. This behavior strongly affects the interactions between soft nanoparticles at fluid-fluid interfaces, which have proven challenging to probe experimentally. We measure the surface pressure for a stable 2D interfacial suspension of nanoparticles grafted with ligands, and extract the interaction potential from these data by comparison to Brownian dynamics simulations. A soft repulsive potential with an exponential form accurately reproduces the measured surface pressure data. A more realistic interaction potential model is also fitted to the data to provide insights into the ligand configuration at the interface. The stress of the 2D interfacial suspension upon step compression exhibits a single relaxation time scale, which is also attributable to ligand reconfiguration.

US$19.90

PMID: 25815970

DOI: 10.1103/PhysRevLett.114.108301


Other references

Harland, S.C., 1955: The impact of genetics on breeding. Madras Agric Jour 42(1): 36-37

Janarthanan, K.; Balalakshmoji, D.; Sanathkumar, H.T.; Suthakaran, P.Karthik., 2012: Chronic pancreatitis presenting with pseudocyst of pancreas and pseudo-aneurysm of hepatic artery. A 2-y-old girl presented with recurrent abdominal pain and hematemesis. The patient was diagnosed to have chronic calcific pancreatitis complicated by pseudocyst of the head of pancreas and pseudo-aneurysm of the common hepatic artery. Diagnosis w...

Rossi, E.; Cinconze, E.; Nica, M.; Colombo, D.; Maggioni, A.P., 2015: Real World Evidence And Costs Of Chronic Heart Failure: Findings From 41,413 Patients Of The Arno Database. Value in Health 18(7): A388-A388

Corona, J.Carlos.; Gimenez-Cassina, A.; Lim, F.; Díaz-Nido, J., 2010: Hexokinase II gene transfer protects against neurodegeneration in the rotenone and MPTP mouse models of Parkinson's disease. A typical feature of Parkinson's disease is the progressive loss of dopaminergic neurons in the substantia nigra, in which inhibition of mitochondrial complex I activity may play an important role. Rotenone or 1-methyl-4-phenyl-1,2,3,6-tetrah...

Hilley George E.; Arrowsmith J.R.mon; Pollard David D., 1996: A geographic information system applied to areas of active tectonics. We have developed a Geographic Information System (GIS) which functions as an analysis and presentation tool for studying the development of landforms in areas of active faulting. The GIS includes the Central Carrizo Plane and Northern Elkhorn Hil...

Soper, Kathleen, 1957: Comparative morphology of the New Zealand species of Pseudopanax and Nothopanax. On comparison of leaves, inflorescences, flowers, nodal structure and wood histology the New Zealand species of Nothopanax and Pseudopanax fall into five groups. Tables of description of the secondary wood are given for one member of each group (N...

da Rosa, G.Martins.; Moraes, L.; Cardias, B.Barcelos.; de Souza, M.da.Rosa.Andrade.Zimmermann.; Costa, J.Alberto.Vieira., 2016: Chemical absorption and CO2 biofixation via the cultivation of Spirulina in semicontinuous mode with nutrient recycle. The chemical absorption of carbon dioxide (CO2) is a technique used for the mitigation of the greenhouse effect. However, this process consumes high amounts of energy to regenerate the absorbent and to separate the CO2. CO2 removal by microalgae c...

Henzl, M.R., 1972: Luteolysis in humans and subhuman primates. It has been suggested that pregnancy can be prevented by interfering with the function of the corpus luteum (CL) and that prostaglandins (PGs) may play a role in this approach because of its luteolytic effects in humans and infrahuman primates. Th...

Nelson, C.P.; Schunkert, H.; Samani, N.J.; Erridge, C., 2015: Genetic analysis of leukocyte type-I interferon production and risk of coronary artery disease. Patients with systemic lupus erythematosus are genetically predisposed to enhanced production of the type-I interferon IFN-α and are also at elevated risk of developing atherosclerosis compared with healthy subjects. We aimed to test whether gene...

Andrew, S.E.; Peters, A.C., 2002: DNA instability and human disease. It is now well established that non-Mendelian examples of DNA instability are associated with human disease. Most malignancies are associated with various chromosomal instabilities, such as aneuploidy, gene amplification, and chromosomal deletion....