نتایج جستجو برای: coreshell

تعداد نتایج: 39  

2012
M. Siebenbürger

We review recent work done on the rheology of thermosensitive suspensions. These systems consist of aqueous suspensions of coreshell particIes having asolid polystyrene core and a shell of thermosensitive crosslinked poly(N-isopropylacrylamide) (PNIPA). In cold water the thermosensitive PNIPA-network is swollen leading to a high effective volume fraction of the particles in suspension. Approach...

2008
Lev G. Mourokh Igor L. Kuskovsky Anatoly Yu. Smirnov Hiroshi Matsui

We examine theoretically resonant non-radiative exciton (Förster) transfer in the system of colloidal coreshell quantum dots (QDs) of different types. We show that when the type-I QD (acceptor) is coupled with the type-II QD (donor), the electron-hole pair optically excited in the type-II QD can be transferred to the type-I QD nonradiatively, if the recombination time of the former is larger th...

2008
J. J. Penninkhof A. Moroz A. van Blaaderen A. Polman

The surface plasmon modes of spherical and oblate spheroidal core-shell colloids composed of a 312 nm diameter silica core and a 20 nm thick Au shell are investigated. Large arrays of uniaxially aligned coreshell colloids with size aspect ratios ranging from 1.0 to 1.7 are fabricated using a novel ion irradiation technique. Angleand polarization-resolved extinction spectroscopy is performed on ...

2005
H. E. Ruda

An analysis is presented of optical absorption and emission in semiconducting, metallic, and mixed coreshell nanowires are considered theoretically. Due to image forces caused by the difference in dielectric constants between nanowires and their environment, absorption and emission coefficients are different for light polarized parallel or perpendicular to the nanowire axis. As a result, the in...

2014
Amin Azizi Brian S. Mitchell Noshir S. Pesika

Among various magnetic nanoparticles that have been studied for potential biomedical applications, FeCo nanoparticles are promising candidates because of their high saturation magnetization and high Curie temperature. [ 3–5 ] However, the ease of oxidation, dissolution in acidic environments, and potential toxicity of these materials in their native state restrict their use in biomedical applic...

2017
Osman Arslan Fuat Topuz Hamit Eren Necmi Biyikli

Plasmonic enhancement for electron–hole separation efficiency and visible light photocatalysis was achieved by Pd nanocube decoration on a ZnO nanolayer coated onto electrospun polymeric (polyacrylonitrile (PAN)) nanofibers. Since exciton formation and sustainable electron–hole separation have a vital importance for realizing better solar energy in photovoltaic and photocatalytic devices, we ac...

Journal: :Advanced Materials Interfaces 2022

In recent years, efficient and porous carbon-layer-modified magnetic metal oxides demonstrate potentials for the significant improvement of catalytic adsorption performance. this study, a novel coreshell Fe3O4@mesoporous carbon (Fe3O4@MPC) nanochain electrochemical sensor is constructed by using resorcinol-formaldehyde resin Fe3O4 nanospheres as shell precursor core, respectively, with simple e...

Journal: :Chinese Journal of Electronics 2023

Plasmonic Fano resonances have recently attracted a great deal of research interest due to their sharp asymmetric profile, high sensitivity the ambient material and low radiation damping. In this paper, we extend plasmonic that resulted from interference between bright dark modes in coreshell nanoparticle system for novel biosensing, optical switching applications, by using theory transformatio...

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