Nano Device
Mostrando 1-12 de 12 artigos, teses e dissertações.
-
1. Synthesis and characterization of amphiphilic block copolymers by transesterification for nanoparticle production
Abstract Poly(ε-caprolactone)-block-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL, triblock) and Poly(ε-caprolactone)-block-(poly(ethylene oxide)−poly(propylene oxide)−poly(ethylene oxide)-poly (ε-caprolactone) (PCL-PEO-PPO-PEO-PCL, pentablock) copolymers were synthesized by transesterification with reduction of PCL molecular mass, enabling
Polímeros. Publicado em: 04/07/2019
-
2. Nano and Micro Ceramic Membranes from Degradable Templates
Abstract The nano/microstructures with highly porous surface area have attracted tremendous attention, particularly the synthesis and tailoring of porous and hollow materials of high performance. In this paper, an easy method of cost-effective synthesis of hollow ceramic fiber membranes based on Hydroxyapatite, TiO2 and ZrO2 stabilized with Yttrium, is propo
Mat. Res.. Publicado em: 28/07/2016
-
3. CONSTRUÇÃO DE UM DISPOSITIVO DE PRESSURIZAÇÃO A VÁCUO PARA A PREPARAÇÃO DE FASES ESTACIONÁRIAS MONOLÍTICAS VIA PROCESSO SOL-GEL
The filling of capillaries via the sol-gel process is growing. Therefore, this technical note focuses on disseminating knowledge acquired in the Group of Analytical Chemistry and Chemometrics over seven years working with monolithic stationary phase preparation in fused silica capillaries. We believe that the detailed information presented in this technical
Quím. Nova. Publicado em: 2015-01
-
4. Double-gate nanotransistors in silicon-on-insulator : simulation of sub-20 nm FinFETs / Nano-transistores de porta dupla em silício sobre isolante simulação de FinFETs sub-20nm
Esta Tese apresenta os resultados da simulação do transporte eletrônico em três dimensões (3D) no nano dispositivo eletrônico conhecido como ¿SOI-FinFET¿. Este dispositivo é um transistor MOS em tecnologia Silício sobre Isolante ¿ ¿Silicon-on- Insulator¿, SOI ¿ com porta dupla e cujo canal e zonas de fonte e dreno são realizadas em uma estrutu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
5. Projeto e fabricação de nao-estruturas por litografa interferometrica / Design and fabrication of nano-structures by interforometric lithography
In this work the interferometric lithography technique was developed for recording periodic relief nano-structures, one and bi-dimensional, on silicon and glass substrates. In particular, the work is focused in two directions: the study of the profile of the structures recorded in photorresist, through the superimposition of interference light patterns, and
Publicado em: 2008
-
6. Diluted magnetic nanostructures in the presence of applied external fields / Estudo de nano estruturas diluídas magnéticas na presença de campos externos aplicados
In the present work we studied properties of the spintronic transport of nanostructures formed by layers of diluted magnetic semiconductors (DMS) and conventional semiconductors with crossed fields applied. The electric field is in the growth direction and the magnetic field is perpendicular t o this one. We studied two configurations of nanostructures where
Publicado em: 2008
-
7. Nanomanipulation and characterization of individual nano-objects for in situ experiments of electron microscopy / Nanomanipulação e caracterização de nano-objetos individuais por experimentos in situ de microscopia eletronica
It is expected that, in the future, high-technology devices should be based on new and unexpected physical and chemical properties of nanometric objects. Many applications require nano-objects to be selectively positioned at well-defined positions of a device. However, the well-established methods of physical manipulation used in the macroscopic scale are no
Publicado em: 2007
-
8. Ressonant energy transfer and transport mechanisms in molecular electronic devices based on Alq3 organic molecule. / Transferência resonante de energia e mecanismos de transporte eletrônico em dispositivos moleculares baseados na molécula orgânica Alq3.
The aim of the present work was to study and analyses the energy and electron transfer process in molecular devices. The molecular devices were fabricated by using the polystyrene polymer because this material, as it was verified in this work, showed a good insulator features. The optical and electrical molecular devices were fabricated by using the spin-coa
Publicado em: 2007
-
9. Nano-structured alloy and composite coatings for high temperature applications
Nano-structured materials often possess special properties that materials with identical compositions but ordinary grain size do not have. This paper reports our work on the surface nano-crystallisation and nano-structured alloy and composite coatings. A number of processing methods including magnetron sputtering, thermal spray and pulse electro-spark deposi
Materials Research. Publicado em: 2004-03
-
10. A Simple, Rapid Method for Demonstrating Bacterial Flagella
We developed a simple, rapid method for demonstrating flagellation of bacteria using the fluorescent protein stain NanoOrange (Molecular Probes, Eugene, Oreg.). The NanoOrange reagent binds to hydrophobic regions of proteins, which results in substantial enhancement of fluorescence. Unbound reagent is essentially nonfluorescent. NanoOrange fluorescently stai
American Society for Microbiology.
-
11. Discrete two-terminal single nanocluster quantum optoelectronic logic operations at room temperature
Readily formed at nanoscale break junctions, arrays of individual spatially isolated, strongly electroluminescent Ag2–Ag8 nanoclusters perform complex logic operations within individual two-terminal nanoscale optoelectronics devices. Simultaneous electrical excitation of discrete room-temperature nanocluster energy levels directly yields AND, OR, NOT, XOR,
The National Academy of Sciences.
-
12. The 64-Kilodalton Capsid Protein Homolog of Beet Yellows Virus Is Required for Assembly of Virion Tails
The filamentous virion of the closterovirus Beet yellows virus (BYV) consists of a long body formed by the major capsid protein (CP) and a short tail composed of the minor capsid protein (CPm) and the virus-encoded Hsp70 homolog. By using nano-liquid chromatography-tandem mass spectrometry and biochemical analyses, we show here that the BYV 64-kDa protein (p
American Society for Microbiology.