نتایج جستجو برای: glass nanoparticles

تعداد نتایج: 177649  

Journal: :Analytical and bioanalytical chemistry 2011
Jen-Yi Chen Kar-Wei Hon Yu-Chie Chen

Elevating the reaction temperature is an effective method to accelerate protein enzymatic digestion because it can promote protein denaturation and enzyme activities. In this study, we demonstrated a new photothermal heating method to assist protein tryptic digestion on glass slides. A glass slide coated with layer-by-layer gold nanoparticles (Glass@AuNPs), combined with the use of a near infra...

2017
Wilfried Blanc Christelle Guillermier Bernard Dussardier

The development of new active optical fibre devices requires materials with « augmented » intrinsic properties, though using luminescent ion (LI) –doped silica as host glass. Optical fibers containing Dielectric Nanoparticles (DNP) grown by phase separation are proposed. DNP would optimally fully encapsulate LI to produce « engineered » spectroscopic properties. To determine the composition of ...

Journal: :Biomaterials 2008
Anna M Lipski Christopher J Pino Frederick R Haselton I-Wei Chen V Prasad Shastri

Chemical and morphological characteristics of a biomaterial surface are thought to play an important role in determining cellular differentiation and apoptosis. In this report, we investigate the effect of nanoparticle (NP) assemblies arranged on a flat substrate on cytoskeletal organization, proliferation and metabolic activity on two cell types, Bovine aortic endothelial cells (BAECs) and mou...

Journal: :Journal of biomedical materials research. Part A 2009
Zhongkui Hong Rui L Reis João F Mano

SiO(2)-CaO-P(2)O(5) ternary bioactive glass ceramic (BGC) nanoparticles with different compositions were prepared via a three-step sol-gel method. Polyethylene glycol was selected to be used as the surfactant to improve the dispersion of the nanoparticles. The morphology and composition of these BGC nanoparticles were observed by ESEM and EDX. All the BGC particles obtained in this method were ...

2011
Tirtha Som Basudeb Karmakar

Eu ions and elliptical Au nanoparticles incorporated new antimony based reducing dielectric (here glass) matrix, K2O-B2O3-Sb2O3 (KBS), has been prepared by a new single-step methodology involving selective thermochemical reduction without employing any external reducing agent. X-ray diffraction (XRD) and selected area electron diffraction (SAED) results of these hybrid nanocomposites indicate t...

Journal: :Physical chemistry chemical physics : PCCP 2016
Mandar M Shirolkar Xiaolei Dong Jieni Li Shiliu Yin Ming Li Haiqian Wang

Particle size significantly affects the properties and therefore the potential applications of multiferroics. However, is there special particle size effect in BiFeO3, which has a spiral modulated spin structure? This is still under investigation for sub-5 nm BiFeO3. In this report, the structural, electronic and magnetic properties are investigated for chemically synthesized BiFeO3 nanoparticl...

2012
Belén Cabal Fabio Cafini Leticia Esteban-Tejeda Luís Alou José F. Bartolomé David Sevillano Roberto López-Piriz Ramón Torrecillas José Serafín Moya

This paper reports the effect of soda-lime-glass-nAg coating on the viability of an in vitro biofilm of Streptococcus oralis. Three strains (ATCC 35037 and two clinical isolates from periodontitis patients) were grown on coated with glass, glass containing silver nanoparticles, and uncoated titanium alloy disks. Two different methods were used to quantify biofilm formation abilities: crystal vi...

There is a kind of composite materials made up of noble metal nanoparticles (such as gold, silver, copper) and a dielectric material (such as silica) with unique properties. In this paper, using Strong Permittivity Fluctuation Theory (SPFT) method, the coefficient of effective permittivity and the effective susceptibility coefficient are calculated for combining glass with metal nanoparticles, ...

Journal: :Journal of the Physical Society of Japan 2023

Precise measurement of temperature distribution and thermal behavior in microscopic regions is critical many research fields. We demonstrate lock-in thermography using nitrogen-vacancy centers diamond nanoparticles. successfully visualize diffusion glass coverslip Teflon with micrometer resolution deduce their diffusivity. By spreading nanoparticles over the sample surface, variation can be mea...

We report on the synthesis, morphology, chemically and structurally of TiO2-NiO-SiO2 nanostructure. The TiO2-NiO-SiO2 nanostructure was synthesized by a method based on the sol-gel method, by the simultaneous gelation of all cations. The coatings were deposited on dried soda-lime glass slides by spin coating. Composite powders and coating on glass hav...

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