نتایج جستجو برای: hybrid nanoparticles

تعداد نتایج: 294743  

2014
Fanghui Ren Jeremy Campbell Gregory L. Rorrer Alan X. Wang

Diatoms are single-celled algaes that make photonic-crystal-like silica shells or frustules with hierarchical micro& nano-scale features consisting of two-dimensional periodic pores. In this paper, we present an innovative label-free optical sensor based on a biological-plasmonic hybrid nanostructure by self-assembling silver (Ag) nanoparticles into diatom frustules. The photonic-crystal-like d...

2014
Gonzalo Recio-Sánchez Kyoko Namura Motofumi Suzuki Raúl J Martín-Palma

In the present work, the photo-acoustic emission from nanostructured copper/porous silicon hybrid systems was studied. Copper nanoparticles were grown by photo-assisted electroless deposition on crystalline silicon and nanostructured porous silicon (nanoPS). Both the optical and photo-acoustic responses from these systems were determined. The experimental results show a remarkable increase in t...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2010
Jennifer S Hong Samuel M Stavis Silvia H DePaoli Lacerda Laurie E Locascio Srinivasa R Raghavan Michael Gaitan

We present a microfluidic method to direct the self-assembly of temperature-sensitive liposome-hydrogel hybrid nanoparticles. Our approach yields nanoparticles with structural properties and highly monodisperse size distributions precisely controlled across a broad range relevant to the targeted delivery and controlled release of encapsulated therapeutic agents. We used microfluidic hydrodynami...

2016
Michelle K. Gaines Steven D. Smith Jon Samseth Michael R. Bockstaller Russell B. Thompson Richard J. Spontak

Although block copolymer motifs have received considerable attention as supramolecular templates for inorganic nanoparticles, experimental observations of a nanostructured diblock copolymer containing inorganic nanoparticles-supported by theoretical trends predicted from a hybrid self-consistent field/density functional theory-confirm that nanoparticle size and selectivity can likewise stabiliz...

2013
Sha Liu Guanying Chen Tymish Y. Ohulchanskyy Mark T. Swihart Paras N. Prasad

We present a simple method for preparing water dispersible NaGdF4: Yb3+, Er3+/silica/gold nanoparticles. The emission intensity and color of the upconverting cores are modulated by the plasmonic absorbance and field enhancement from the gold nanoparticles. The applicability of hybrid NPs for multi-modal bioimaging probes is illustrated by in vitro confocal microscopy of living cancer cells.

Journal: :Nanoscale 2015
V Körstgens S Pröller T Buchmann D Moseguí González L Song Y Yao W Wang J Werhahn G Santoro S V Roth H Iglev R Kienberger P Müller-Buschbaum

Titania nanoparticles are produced by laser ablation in liquid in order to initiate functionalization of titania with the polymer for the active layer. By combining these titania nanoparticles and water-soluble poly[3-(potassium-6-hexanoate)thiophene-2,5-diyl] (P3P6T) hybrid solar cells are realized.

Journal: :Advanced materials 2012
Delphine Coursault Johan Grand Bruno Zappone Habib Ayeb Georges Lévi Nordin Félidj Emmanuelle Lacaze

In the presence of oriented smectic liquid crystal defects, hybrid systems of nanoparticles/liquid crystals form straight chains of nanoparticles of length longer than tens of micrometers and width equal to one single nanoparticle. The interparticle distance in a chain can be varied between a few micrometers and 1.5 nm, highlighting the control of optical absorption by light polarization monito...

Journal: :Talanta 2009
Xin Wang Lianyan Wang Xiwen He Yukui Zhang Langxing Chen

In this study, we synthesized Fe(3)O(4) magnetic nanoparticles coated estrone-imprinted polymer with controlled size using a semi-covalent imprinting strategy. In this protocol, the estrone-silica monomer complex (EstSi) was synthesized by the reaction 3-(triethoxysilyl)propyl isocyanate with estrone, where the template was linked to the silica coating on the iron oxide core via a thermally rev...

2014
Joachim Allouche Corinne Chanéac Roberta Brayner Michel Boissière Thibaud Coradin

The design of magnetic nanoparticles by incorporation of iron oxide colloids within gelatine/silica hybrid nanoparticles has been performed for the first time through a nanoemulsion route using the encapsulation of pre-formed magnetite nanocrystals and the in situ precipitation of ferrous/ferric ions. The first method leads to bi-continuous hybrid nanocomposites containing a limited amount of w...

2017
Xu Chen Donglei Zhou Wen Xu Jinyang Zhu Gencai Pan Ze Yin He Wang Yongsheng Zhu Cui Shaobo Hongwei Song

Localized electric filed enhancement by surface plasmon resonance (SPR) of noble metal nanoparticles is an effective method to amplify the upconversion luminescence (UCL) strength of upconversion nanoparticles (UCNPs), whereas the highly effective UCL enhancement of UCNPs in colloids has not been realized until now. Here, we designed and fabricated the colloidal Au-Ag nanocage@NaYF4@NaYF4:Yb,Er...

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