Aloisi Somer, Julia G. Camilotti, A. Gonçalves, Claudia Bonardi K. da Cruz, Gerson K. da Cruz, Flavio L. Beltrame, Francielle Sato, Nelson G. Castelli Astrath e Andressa Novatski

Spectroscopy Letters: An International Journal for Rapid Communication – Volume: 48; Issue: 6; Pages: 427-430; DOI: 10.1080/00387010.2014.902853

In this study, photoacoustic spectroscopy was used to quantify polyvinylpyrrolidone in paracetamol samples with different proportions […]

Shalimar C. Zanatta, Flávio F. Ivashita, Klebson L. da Silva, Carla F. Cerqueira Machado e Andrea Paesano Jr.

Hyperfine Interact – Volume: 224; Pages: 307–312; DOI 10.1007/s10751-013-0813-x

We have investigated the mechanosynthesis of gadolinium iron garnet (GdIG) by high-energy ball-milling of 3.(Gd2O3) + 10.(α-Fe) followed by thermal annealing conducted at moderate temperatures (1100 ◦C). The samples were characterized by X-ray diffraction and Mössbauer spectroscopy in […]

Patrick S. Simonário, Fernando C. Messias Freire, Luiz R. Evangelista, Rodolfo Teixeira Souza

Physics Letters A – Volume: 378; Issue: 4; Pages: 453–458; DOI:10.1016/j.physleta.2013.12.020

The bulk and the surface-like elastic constants of a nematic liquid crystal are calculated for an ensemble of particles interacting via anisotropic dispersion forces using the pseudo-molecular method. The geometrical anisotropy of the molecules is […]

Otávio A. Capeloto, Gustavo V. B. Lukasievicz, Vitor S. Zanuto, Leandro S. Herculano, Nilson E. Souza Filho, Andressa Novatski, Luis C. Malacarne, Stephen E. Bialkowski, Mauro L. Baesso e Nelson G. Castelli Astrath

Applied Optics – Volume: 53; Issue: 33; Pages: 7985-7991; DOI: 10.1364/AO.53.007985

The time-resolved thermal mirror technique is developed under pulsed laser excitation for quantitative […]

Hossein Nemati, Rafael S. Zola e Deng-Ke Yang

New Journal of Physics – Volume: 45; Issue: 1; Pages: 1500–1503; DOI: 10.1002/j.2168-0159.2014.tb00398.x

We developed reflective cholesteric displays whose color and reflectance can be electrically tuned. The displays were made from polymer stabilized cholesteric liquid crystals. Monomers and cholesteric liquid crystals were mixed and then polymerized under UV light. When the monomer […]

Ervin K. Lenzi, Marcelo K. Lenzi, Rafael S. Zola, Haroldo V. Ribeiro, Fernanda C. Zola, Luiz R. Evangelista e Giane Gonçalves

Physica A: Statistical Mechanics and its Applications – Volume: 410; Pages 399–406; DOI: 10.1016/j.physa.2014.05.055

The reaction process occurring on a solid surface where active sites are present is investigated. The phenomenon is described by a linear kinetic […]

Luis C. Malacarne, Elton L. Savi, Mauro L. Baesso, Ervin K. Lenzi e Nelson G. Castelli Astrath

The Journal of Physical Chemistry. A – Volume: 118; Issue: 31; Pages: 5983–5988; DOI: 10.1021/jp505255a

Photophysics processes are ubiquitous in nature and difficult to be quantitatively characterized by conventional spectroscopy. Alternatively, pump–probe methods have been widely applied to study these complex processes. […]

Cleber S. Alves, Flavio C. Colman, Gabriel L. Foleiss, Wesley Szpak, Gabriel T. Flores Vieira e Antonio C. Bento

International Journal of Refrigeration – Volume: 37; Pages: 215–222; DOI: 10.1016/j.ijrefrig.2013.09.031

The increasing demand for energy has driven society to explore different sources of energy, seeking to achieve sustainability. In this sense, we designed a thermal machine whose energy […]

Antônio O. de Souza, Valdecir Biondo, Paulo Willian C. Sarvezuk, Jusmar V. Bellini, Pedro R. Anizelli, Dimas A. M. Zaia e Andrea Paesano Jr.

Química Nova – Volume: 37; Number: 7; Pages: 1132-11370; DOI: 10.5935/0100-4042.20140181

Iron(III) acetate was synthesized by the reflux method using iron enriched in the 57Fe isotope and the compound processed by freeze-drying. The as-synthesized […]

Luis J. Borrero-González, Luiz A. Oliveira Nunes, Jaqueline L. Carmo, Francine B. G. Astrath e Mauro L. Baesso

Journal of Luminescence – Volume: 145; Pages: 615–619; DOI: 10.1016/j.jlumin.2013.08.036

We report on spectroscopic studies and downconversion luminescence in OH−-free Pr3+–Yb3+ co-doped low-silica calcium aluminosilicate glasses (LSCAS). The dependencies of the visible to near-infrared emissions, photoacoustic signals, luminescence decay times […]