By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Nanoparticles. According to news reporting out of Stockholm, Sweden, by NewsRx editors, research stated, "Mussel adhesive proteins are known for their high affinity to a range of different surfaces, and they therefore appear as ideal candidates for producing thin inorganic-organic composite films with high robustness. In this work we explore the possibility of making cohesive films utilizing layer-by-layer deposition of the highly positively charged mussel adhesive protein, Mefp-1, and negatively charged ceria nanoparticles."
Our news journalists obtained a quote from the research from the SP Technical Research Institute of Sweden, "This particular material combination was chosen due to recent findings that such films provide good corrosion protection. Quartz crystal microbalance with dissipation monitoring (QCM-D) was used for following the film formation process in situ on silica surfaces. A close to linear growth of the film with number of deposited layers was found for up to 18 deposition steps, the highest number of depositions investigated in this work. The Mefp-1 concentration during film deposition affected the film properties, where a higher protein concentration resulted in a stiffer film. It was also found that the added mass could be amplified by using a Mefp-1 solution containing small aggregates. The surface nanomechanical properties of dried multilayer films were investigated using peak force QNM (quantitative nanomechanical mapping) in air. Homogeneous surface coverage was found under all conditions explore, and the Young's modulus of the outer region of the coating increased when a higher Mefp-1 concentration was used during film deposition. The nature of the outermost surface layer was found to significantly affect the surface nanomechanical properties."
According to the news editors, the research concluded: "The abrasion resistance of the coating was measured by using controlled-force contact mode AFM."
For more information on this research see: Nanostructured Composite Layers of Mussel Adhesive Protein and Ceria Nanoparticles. Langmuir, 2013;29(30):9551-9561. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)
Our news journalists report that additional information may be obtained by contacting O. Krivosheeva, SP Technical Res Inst Sweden, SE-11486 Stockholm, Sweden. Additional authors for this research include M. Sababi, A. Dedinaite and P.M. Claesson (see also Nanoparticles).
Keywords for this news article include: Sweden, Europe, Stockholm, Nanomechanical, Nanotechnology, Emerging Technologies
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