نتایج جستجو برای: ceramic nanoparticles
تعداد نتایج: 129782 فیلتر نتایج به سال:
As transparent heated films (THFs) based on conductive oxides (TCOs) are restricted by expensive raw materials and inappropriate fabricating film curved surfaces because of its brittleness, silver nanowires (AgWS-TCF) is an ideal alternative material for THF. However, there still many problems to be solved in the electrical thermal stability AgNWs-TCF. In this paper, Al-doped ZnO (AZO) nanopart...
We present a template-free method for "polymerizing" nanoparticles into long chains without side branches. A variety of nanoparticles are encapsulated in polystyrene-block-poly(acrylic acid) (PSPAA) shells and then used as monomers for their self-assembly. Spherical PSPAA micelles upon acid treatment are known to assemble into cylindrical micelles. Exploiting this tendency, the core-shell nanop...
Although the term nanozymes was coined by us in 2004 to highlight the enzyme-like properties of gold nanoparticles passivated with a monolayer of Zn(II)-complexes in the cleavage of phosphate diesters, systems resembling those metallo-nanoparticles, like micelles and vesicles, have been the subject of investigation since the mid-eighties of the last century. This paper reviews what has been don...
Metal nanoparticles are being actively explored for applications that use localized surface plasmon (LSP) resonance for optical sensing. Here we report an electrostatic field sensing technique which has been applied to detection of mammalian brain cell activity, by optically measuring the cellular potential induced shift in the SP resonance mode of an adjacent planar gold nanoparticle array. An...
To include electron-electron correlation effects in the nanosystem we are proposing a combined density-functional-theorydynamical-mean-field-theory (DFT + DMFT) approach, which we have recently shown to be suitable for including correlation effects in small (2-5 atoms) Fe and FePt clusters [1]. This method has several advantages as compared to the widely used DFT + U approach, the most importan...
A template synthesis allows the preparation of monodisperse nanoparticles with high reproducibility and independent from self-assembly requirements. Tailor-made polymer cages were used for the preparation of nanoparticles, which were made of cross-linked macromolecules with pendant thiol groups. Gold nanoparticles (AuNPs) were prepared in the polymer cages in situ, by using different amounts of...
This research describes the preparation and sensor applications of multifunctional monodisperse, Fe₃O₄ nanoparticles-embedded poly(styrene)/poly(thiophene) (Fe₃O₄-PSt/PTh), core/shell nanoparticles. Monodisperse Fe₃O₄-PSt/PTh nanoparticles were prepared by free-radical combination (mini-emulsion/emulsion) polymerization for Fe₃O₄-PSt core and oxidative seeded emulsion polymerization for PTh she...
This paper will focus on a novel class of inorganic compounds that we term as molecular mineralst (MMs). MMs are clusters of ceramic fragments encapsulated with organic ligands. These compounds can be crystallized from solution as molecular single crystals and have well-defined crystal structures that can be described with X-ray diffraction methods. Most importantly, the ceramic clusters are pe...
Abstract The extremely elevated strength of nanoceramics under compression arises from the necessity to nucleate highly energetic dislocations surface, in samples that are too small contain pre-existing defects. Here, we investigate site dependence surface dislocation nucleation MgO nanocubes using a combination molecular dynamics simulations, nudged-elastic-band method calculations and rate th...
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