Talita Mazon

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Bob Myhill

University of Bristol

Emmanuel T Rodulfo

De La Salle University

Silvia De Bianchi

Università degli Studi di Milano - State University of Milan (Italy)

Armando Marques-Guedes

UNL - New University of Lisbon

Benjamin Wilson

Aalto University

Mark Hammonds

The University of Tokyo

Ivan de Martino

University of Salamanca

Mathieu Ossendrijver

Freie Universität Berlin

Maarten Kleinhans

Utrecht University

Adalbert Ding

Technische Universität Berlin

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Papers by Talita Mazon

Estudo de adesivos condutivos isotr�picos utilizados para a fixa��o de componentes eletr�nicos

Materia, 2006

Crystal structure of BaBi2Ta2O9

Powder Diffraction, 2000

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Gas Sensor Properties of ZnO Nanorods Grown by Chemical Bath Deposition

Advanced Materials Research, 2014

ABSTRACT The present work shows a study about the growing of ZnO nanorods by chemical bath deposi... more ABSTRACT The present work shows a study about the growing of ZnO nanorods by chemical bath deposition (CBD) and its application as gas sensor. It was prepared ZnO nanorods and Au decorated ZnO nanorods and the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and gas sensing response measurements. The results obtained by XRD show the growth of ZnO phase. It was possible to observe the formation of uniform dense well-aligned ZnO nanorods. The results obtained also revealed that Ag nanoparticles have decorated the surface of ZnO nanorods successfully. Au nanoparticles with diameter of a few nanometers were distributed over the ZnO surface nanorods. The gas sensing response measurements showed a behavior of n type semiconductor. Furthermore, the Au-functionalized ZnO nanorods gas sensors showed a considerably enhanced response at 250 and 300 °C.

Estudo de adesivos condutivos isotrópicos utilizados para a fixação de componentes eletrônicos

by Talita Mazon, Carlos Antonio Lopes Oliveira, and Márcio Biasoli

Matéria (Rio de Janeiro), 2006

RESUMO Atualmente, os adesivos condutivos estão sendo visados como possível alternativa para subs... more

Influence of seed particle frequency on the phase formation and on the microstructure of 0.88 PZN–0.07 BT–0.05 PT ceramic

Ceramics International, 2000

The Pechini method as well as the simultaneous addition of seeds particles and dopant solutions o... more The Pechini method as well as the simultaneous addition of seeds particles and dopant solutions of BaTiO3 (BT) and PbTiO3 (PT) were used to prepare the perovskite phase 0.88 PZN–0.07 BT–0.05 PT. To study the influence of seed particle frequency on the synthesis of the PZN ceramic, two ranges of seed particle size were used: the range from 30 to 100 nm, termed small seed particles (frequency of 1015 particles/cm3); and the range from 100 to 900 nm, termed large seed particles (frequency of 1013 particles/cm3). The crystalline nuclei size influenced the calcining process, the sintering process and the microstructure. Samples prepared with lower seed frequency displayed more amount of pyroclore phase, need higher temperatures for sintering and showed a more heterogeneous microstructure with poor dielectric properties.

ZnO nanostructures directly grown on paper and bacterial cellulose substrates without any surface modification layer

by Agnaldo Gonçalves and Talita Mazon

Chemical Communications, 2013

In this report, hierarchical ZnO nano and microstructures were directly grown for the first time ... more In this report, hierarchical ZnO nano and microstructures were directly grown for the first time in bacterial cellulose substrate and in other two different papers by hydrothermal synthesis without any surface modification layer. Compactness and smoothness of the substrates are two important parameters that allow the growth of oriented structures. Zinc oxide (ZnO) is an optoelectronic material with a plethora of applications in electronic and optoelectronic devices. ZnO is a distinguished material with some special properties owing to its wide direct bandgap (3.37 eV) and large excitation binding energy (60 meV) 1,2 , besides its excellent chemical and mechanical stability. ZnO nanostructures can be found in nanodevices, such as field-effect transistors 3 , lasers 4 , chemical and biological sensors 5 and dye-sensitized solar cells (DSSC) 6 . The interest in growing nanostructures on paper or paper-like substrates is mainly because of their low cost, environmentally friendly properties, biodegradability, recyclability, mechanical flexibility and compatibility with most printing processes 4 . These features are important for novel technologies such as smart cards, flexible displays 7 , solar cells 8 , especially organic photovoltaic solar cells 9,10 , electronic paper 11 , batteries 12 , capacitors and supercapacitors 13 . Bacterial cellulose (BC) has been utilized for developing bio-sensors 14 and organic light-emitting diodes (OLEDs) 15 . Bacterial cellulose can be produced from cultures of Gram-negative bacteria Gluconacetobacter xylinus, which produce highly hydrated membranes (up to 99% water), free of lignin and hemicellulose, as well as other biogenic products . Membranes produced in this way usually have a higher molecular weight and high crystallinity compared to the cellulose from plants. Bacterial cellulose membranes are characterized by a 3D structure consisting of an ultrafine network of cellulose nanofibers ("nanocellulose") . One of the pioneering contributions on the use of paper in electronic devices was reported by Fortunato and cols 20 who developed a transistor based on paper substrates with high performance 20 . Although papers based on cellulose are dielectric materials, in some cases, e. g. composites, it is possible to achieve electrical conducting characteristics.

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Estudo de adesivos condutivos isotr�picos utilizados para a fixa��o de componentes eletr�nicos

Materia, 2006

Crystal structure of BaBi2Ta2O9

Powder Diffraction, 2000

Download

Gas Sensor Properties of ZnO Nanorods Grown by Chemical Bath Deposition

Advanced Materials Research, 2014

Estudo de adesivos condutivos isotrópicos utilizados para a fixação de componentes eletrônicos

by Talita Mazon, Carlos Antonio Lopes Oliveira, and Márcio Biasoli

Matéria (Rio de Janeiro), 2006

RESUMO Atualmente, os adesivos condutivos estão sendo visados como possível alternativa para subs... more

Influence of seed particle frequency on the phase formation and on the microstructure of 0.88 PZN–0.07 BT–0.05 PT ceramic

Ceramics International, 2000

ZnO nanostructures directly grown on paper and bacterial cellulose substrates without any surface modification layer

by Agnaldo Gonçalves and Talita Mazon

Chemical Communications, 2013

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