Search results for "Self assembled"
showing 10 items of 40 documents
Surface plasmons and vibrations of self-assembled silver nanocolumns
2006
6 pags. ; 5 figs. 1 tab.
A self-assembled M8L6 cubic cage that selectively encapsulates large aromatic guests.
2011
Porphyrins cubed: A series of self-assembled M8L6 cubic cages that enclose a volume in excess of 1300 A3 were synthesized (see scheme). The porphyrinic walls of the cubes provide favorable sites for pnp interactions, leading to selectivity between large and chemically similar aromatic guests: three molecules of coronene are incorporated and the higher fullerenes C70nC84 are selectively bound in the presence of
Dynamical Properties of Self-Assembled Surfactant-Based Mixtures: Triggering of One-Dimensional Anomalous Diffusion in Bis(2-ethylhexyl)phosphoric Ac…
2013
The dynamic features of bis(2-ethylhexyl)phosphoric acid (HDEHP)/n-octylamine (NOA) mixtures have been investigated as a function of the NOA mole fraction and temperature by (1)H NMR spectroscopy and rheometry. All data consistently suggest a composition-induced glass-forming behavior. The microscopic factors responsible for this behavior have been highlighted and have been explained in terms of driving forces given by HDEHP-to-NOA proton transfer, the tendency of the resulting species to establish H bonds and to spatially segregate the alkyl chains. The study sheds light on the molecular mechanism responsible for the peculiar behavior of transport properties in such systems and furnishes b…
Nanocomposites by Electrostatic Interactions: 1. Impact of Sublayer Quality on the Organization of Functionalized Nanoparticles on Charged Self-Asse…
2000
Bis-benzamidines were studied as linkers for the formation of gold nanoparticle assemblies on planar gold surfaces modified with ω-mercaptohexadecanoic acid. In situ ellipsometry, external reflecti...
Size filtering effect in vertical stacks of In(Ga)As/GaAs self-assembled quantum rings
2006
3 páginas, 3 figuras.
Self — Assembled System: Semiconductor and Virus Like Particles
2008
Virus like nanoparticles (VLP) are in use to be absorbed by cells to cause biological effects. To increase a local concentration of VLP, nanoparticles-carriers bringing the latter to the target cell could be employed. N-type and p-type Si semiconductor nanoparticles, to control adhesion of VLP were applied. Optical absorbance spectra and electron microscopy evidenced that VLP became connected to Si nanoparticles. Moreover, a density of the adhered VLP depended on the type of both semiconductor and VLP.
Self-Assembled System of Semiconductor and Virus Like Nanoparticles
2009
Virus like nanoparticles (VLP) are in use to be absorbed by cells to cause biological effects. To increase a local concentration of VLP, nanoparticles-carriers bringing the latter to the target cell could be employed. N-type and p-type Si semiconductor nanoparticles, to control adhesion of VLP were applied. Optical absorbance spectra and electron microscopy evidenced that VLP became connected to Si nanoparticles. Moreover, a density of the adhered VLP depended on the type of both semiconductor and VLP.
Exciton recombination in self-assembled InAs/GaAs small quantum dots under an external electric field
2002
5 páginas, 3 figuras.-- PACS: 73.63.Kv; 78.55.Cr; 78.67.Hc; S7.12.-- Trabajo presentado en la 7th International Conference on Optics and Excitons in Confined Systems (OECS7).
Vertical stacks of small InAs/GaAs self-assembled dots: resonant and non-resonant excitation
2003
4 páginas, 2 figuras.-- PACS: 78.67.Hc; 73.21.La; 78.55.Cr.-- Proceedings of the International Conference on Superlattices, Nano-structures and Nano-devices ICSNN 2002.
A Novel Method Of Measuring Light Absorption On A Self-Assembled Single Quantum Dot
2005
Abstract. We present a novel method by wich excitonic interband optical transitions within single InAs self-assembled quantum dots can be directly observed in a transmission experiment. Due to the extremely high resolution of the tecnique, individual peaks associated to single exciton absorption resonances in single quantum dots can be spectrally resolved. Using this technique we investigate the oscillator strength, homogeneous linewidth and fine structure splitting in a collection of such individual resonances.