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Electrical properties of individual and small ensembles of InAs/InP nanostructures
(2006-05-01)
We investigate electrical properties of InAs/InP semiconductor nanostructures by conductive atomic force microscopy (C-AFM) and current measurements at low temperatures in processed devices. Different conductances and ...
Confinement effects on Titanium Oxide nanostructures.
(Sociedade Brasileira de Pesquisas em Materiais.Campos do Jordão, 2013-09-29)
Titanium oxide is the most commonly used material for dye-sensitized solar cells. In such devices it is usually found as a nanostructured film, made by the agglomeration of several nanoparticles. The effects of nano-dimensionality ...
Vertical and in-plane electrical transport in InAs/InP semiconductor nanostructures
(2005-06-20)
Vertical and in-plane electrical transport in InAs/InP semiconductors wires and dots have been investigated by conductive atomic force microscopy (C-AFM) and electrical measurements in processed devices. Localized I-V ...
Size-dependent phase transitions in nanostructured zirconia-scandia solid solutions.
(Laboratório Nacional de Luz Síncrotron.Campinas, 2013-02-26)
Size effects on phase stability and phase transitions in technologically relevant materials have received growing attention. Several works reported that metastable phases can be retained at room temperature in nanomaterials, ...
Magnetic sol-gel derived poly(oxyethylene)-siloxane nanohybrids
(2002-01-01)
The magnetic and structural properties of sol-gel derived organic/inorganic nanocomposites doped with Fe(II), Fe(III), Nd(III) and Eu (III) ions are discussed. These hybrids consist of poly(oxyethylene)-based chains grafted ...
Nanoparticles of La1-xSrxMnO3 compounds
(2002-12-01)
A nanoparticles of La1-xSrxMnO3 were synthesized using homogenous coprecipitation method. The precipate was washed with water and dried at 80 °C. The samples were characterized by X-ray powder diffraction, transmission ...
Local structure and photoluminescence properties of nanostructured Zn1-xMnxS material
(Wiley-Blackwell, 2015-01-01)
Zinc sulfide (ZnS) pure or doped has received remarkable attention because of fundamental properties, versatility and potential for several technological applications as luminescent material. In this study, the local ...
Inorganic nanoparticles in organic-inorganic hybrid hosts for planar waveguides
(2002-12-01)
Planar waveguides have been prepared on the ZrO2-(3-glycidiloxypropyl)trimethoxysilane (GPTS) system. Stable sols containing ZrO2 nanoparticles have been prepared and characterized by Photon Correlation Spectroscopy. The ...
Rare earth doped HfO2 nanoparticles embedded in SiO2-HfO2 planar waveguides. Preparation, optical, structural and spectroscopic characterization
(2003-01-01)
In this work we present results on the preparation of planar waveguides based on HfO2 and HfO2-SiO2. Stable sols containing europium and erbium doped HfO2 nanoparticles have been prepared and characterized. The nanosized ...
Ultrafast reflectivity dynamics in bis (n-butylimido) perylene thin films
(2008-09-15)
Using pump-probe reflectometry, we study the ultrafast excited-state dynamics in thin films of BuPTCD, an organic semiconductor, deposited on gold nanoparticles. We observe depletion of the ground state and excited state ...