RSS 1.0Departamento de Física, Química e Biologia
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Red-light-emitting polymer composite based on PVDF membranes and Europium phosphor using Buriti Oil as plasticizer
Bispo-Jr, Airton Germano
; Oliveira, Nagyla Alves ; Cardoso, Celso Xavier ; Lima, Sergio Antonio Marques ; Job, Aldo Eloizo ; Osorio-Román, Igor Orlando ; Danna, Caroline Silva ; Pires, Ana Maria (Materials Chemistry and Physics, 2018) [Artigo]
Rare-earth-doped phosphors immobilized in polymeric matrices find many applications like LEDs. However, little emphasis has been paid to the phosphor and plasticizer effect on the polymer structural, morphological and ... -
Red phosphor based on Eu3+-doped Y2(MoO4)3 incorporated with Au NPs synthesized via Pechini's method
Bispo-Jr, Airton Germano; Shinohara, Gabriel Mamoru Marques ; Pires, Ana Maria ; Cardoso, Celso Xavier (Optical Materials, 2018) [Artigo]
Structural, morphological and spectroscopic characterization of the Eu3+-doped Y2(MoO4)3 red phosphor incorporated with Au nanoparticles (Au NPs) synthesized via Pechini's method is reported in the present study. In order ... -
Middle Electrode in a Vertical Transistor Structure Using an Sn Layer by Thermal Evaporation
Nogueira, Gabriel Leonardo; da Silva Ozório, Maiza ; da Silva, Marcelo Marques ; Morais, Rogério Miranda ; Alves, Neri (Electronic Materials Letters, 2018) [Artigo]
Abstract: We report a process for performing the middle electrode for a vertical field effect transistor (VOFET) by the evaporation of a tin (Sn) layer. Bare aluminum oxide (Al2O3), obtained by anodization, and Al2O3 covered ... -
Experimental and computational investigation of reduced graphene oxide nanoplatelets stabilized in poly(styrene sulfonate) sodium salt
Miyazaki, Celina M.; Maria, Marco A. E. ; ; ; ; ; Constantino, Carlos J. L. ; ; ; et al. (Journal of Materials Science, 2018) [Artigo]
The production of large-area interfaces and the use of scalable methods to build up designed nanostructures generating advanced functional properties are of high interest for many materials science applications. Nevertheless, ... -
Zika Immunoassay Based on Surface-Enhanced Raman Scattering Nanoprobes
Camacho, Sabrina A.; ; Aoki, Pedro Henrique B. ; Constantino, Carlos José L. ; (ACS Sensors, 2018) [Artigo]
Zika virus (ZIKV) was considered a public health emergency of international concern after the 2015 outbreak. Serological tests based on immunoassay platforms is one of the methods applied on the diagnosis of ZIKV and Dengue ... -
Low Cost Humidity Sensor Based on PANI/PEDOT:PSS Printed on Paper
Morais, Rogerio M.; Klem, Maykel Dos Santos ; Nogueira, Gabriel Leonardo ; Gomes, Tiago Carneiro ; Alves, Neri (IEEE Sensors Journal, 2018) [Artigo]
The production of low cost sensors to monitor environment in some industrial sectors is a current need. In aviculture centers, for example, the concentration of ammonia gas is related to humidity, and it is necessary to ... -
Magnetic nanocomposites (SR/IRON) type isotropic MRE directed to vibration absorption systems
Bellucci, Felipe Silva; Paschoalini, Amarildo Tabone ; Fukushima, Jeferson Camargo ; De Sousa Obata, Daniel Henrique ; De Almeida, Fabricio Cesar Lobato ; Job, Aldo Eloizo (2017 IEEE 17th International Conference on Nanotechnology, NANO 2017, 2017) [Trabalho apresentado em evento]
In recent decades, an increasing effort has been made not only to foster cost-effective, competitive and innovative industries but also to create smart materials. In this work, we present the morphological, magnetic and ... -
Elastic modulus of PVDF with bentonite or LiNbO3 using deformation energy
Pintão, Carlos Alberto Fonzar; Cardoso, Celso Xavier (Polimeros, 2017) [Artigo]
Polyvinylidene fluoride (PVDF) is valued for its properties of transparency to light, lightness, flexibility, mechanical strength, chemical stability, ease of processing, and low-cost production. Ceramics have low mechanical ... -
Interaction between 17 α-ethynylestradiol hormone with Langmuir monolayers: The role of charged headgroups
Stunges, Gabriele M.; Martin, Cibely S. ; Ruiz, Gilia C.M. ; ; Constantino, Carlos J.L. ; Alessio, Priscila (Colloids and Surfaces B: Biointerfaces, 2017) [Artigo]
The persistence of steroid hormones disposed of in the environment may pose risks to the health of humans and wildlife, which brings the need of understanding their mode of action, believed to occur in cell membranes. In ... -
Flexible fluorescent films based on quantum dots (QDs) and natural rubber
Danna, Caroline Silva; Osorio-Román, Igor ; Dognani, Guilherme ; Leopoldo Constantino, Carlos Jose ; ; Job, Aldo Eloizo (Journal of Applied Polymer Science, 2017) [Artigo]
This article presents the fabrication and characterization of polyisoprene fluorescent films doped with CdTe quantum dots (QDs). The biopolymer (polyisoprene) is extracted from natural rubber latex, generating flexible and ... -
Sensitive detection of estriol hormone in creek water using a sensor platform based on carbon black and silver nanoparticles
; ; ; ; ; Furini, Leonardo N.; ; ; Constantino, Carlos J.L. ; et al. (Talanta, 2017) [Artigo]
We report the electrochemical detection of estriol using carbon black nanoballs (CNB) decorated with silver nanoparticles (AgNP) as electrode material. Homogeneous, porous films on glassy carbon electrodes (GCE) were ... -
High performance of electrochemical sensors based on LbL films of gold nanoparticles, polyaniline and sodium montmorillonite clay mineral for simultaneous detection of metal ions
de Barros, Anerise; Constantino, Carlos José Leopoldo ; da Cruz, Nilson Cristino ; Bortoleto, José Roberto Ribeiro ; Ferreira, Marystela (Electrochimica Acta, 2017) [Artigo]
We report the effects of the incorporation of gold nanoparticles (AuNPs) into LbL films of emeraldine salt polyaniline (PAni-ES) and sodium montmorillonite clay mineral (Na+-MMT). We observed the higher performance of ... -
Influence of the supramolecular arrangement in the electrical conductivity of poly(thiophene) thin films
Braunger, Maria L.; Alessio, Priscila ; Furini, Leonardo N. ; Constantino, Carlos J. L. ; Olivati, Clarissa A. (Journal of Nanoscience and Nanotechnology, 2017) [Artigo]
Thin films of regioregular polythiophene derivatives have had their optical, structural and morphological properties characterized, but there is still a lack of comparative studies to determine the effect from deposition ... -
Water-gated organic transistors on polyethylene naphthalate films
De Oliveira, Rafael Furlan; ; ; ; ; ; ; Alves, Neri ; ; et al. (Flexible and Printed Electronics, 2016) [Artigo]
Water-gated organic transistors have been successfully exploited as potentiometric transducers in a variety of sensing applications. The device response does not depend exclusively on the intrinsic properties of the active ... -
Chemical evaluation of composites natural rubber/carbon black/leather tannery projected to antistatic flooring
Ruiz, Marcos Roberto; Cabreira, Pedro Luiz Sobreiro ; Budemberg, Eduardo Roque ; Reis, Elton Aparecido Prado Dos ; Bellucci, Felipe Silva ; Job, Aldo Eloizo (Journal of Applied Polymer Science, 2016) [Artigo]
In this study the composites which are commonly called NR/CB/Leather were developed in order to apply them as antistatic flooring and coating. They were developed using vulcanized natural rubber, carbon black to add an ... -
Analysis of toxicity of ceramic nanoparticles and functional nanocomposites based on vulcanized natural rubber
Bellucci, Felipe Silva; Fukushima, Jeferson Camargo ; ; Nobre, Marcos Augusto Lima ; Paschoalini, Amarildo Tabone ; Job, Aldo Eloizo (MATEC Web of Conferences, 2015) [Trabalho apresentado em evento]
Nanocomposites are multiphase materials of which, at least one of the phases, has a dimension smaller than 100 nm. These materials have attracted technological and scientific interest due to their multifunctional characteristics ... -
Evolution of thermal properties of natural rubber nanocomposites functionalized by nickel–zinc ferrite and potassium strontium niobate nanopowders
Bellucci, Felipe Silva; Almeida, Fabricio César Lobatode ; da Silva Agostini, Deuber Lincon ; Nobre, Marcos Augusto Lima ; Paschoalini, Amarildo Tabone ; Job, Aldo Eloizo (Journal of Thermal Analysis and Calorimetry, 2016) [Artigo]
Several composites and nanocomposites based on a polymeric matrix and ceramic fillers are being pursued for use as multifunctional and innovative materials. Nevertheless, there is a series of challenges to be solved in ... -
Analysis of Coffees Using Electronic Tongues
Alessio, Priscila; Constantino, Carlos José Leopoldo ; ; ; (Electronic Noses and Tongues in Food Science, 2016) [Capítulo de livro]
This chapter presents a short review of electronic tongues (e-tongues) applied in coffee analysis, one of the most consumed beverage worldwide resulting in a billion dollar market. These e-tongues are useful for the food ... -
Molecular-Level Modifications Induced by Photo-Oxidation of Lipid Monolayers Interacting with Erythrosin
Aoki, Pedro H.B.; Morato, Luis F.C. ; ; ; Constantino, Carlos J.L. ; (Langmuir, 2016) [Artigo]
Incorporation into cell membranes is key for the action of photosensitizers in photomedicine treatments, with hydroperoxidation as the prominent pathway of lipid oxidation. In this paper, we use Langmuir monolayers of ... -
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution
; ; ; Furini, Leonardo Negri; Constantino, Carlos José Leopoldo (Thin Solid Films, 2016) [Artigo]
This work describes hematite films prepared by a spin-coating deposition solution (SCDS) method that is a sol-gel method derived technique. Hematite films were prepared at two heat treatment temperatures (500 °C and 800 ...