CV Lattes
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Universidade Federal de São Carlos (UFSCAR). Centro de Ciências Exatas e de Tecnologia (CCET) (Institutional affiliation for the last research proposal) Birthplace: Brazil
graduation at Engenharia de Materiais from Universidade Federal de São Carlos (1976), master's at Física from Fisica Usp São Carlos (1979) and doctorate at Ceramics Glasses And Polymers from The University Of Sheffield (1982). Has experience in Material and Metallurgical Engineering, focusing on Ceramics, acting on the following subjects: vidro, cristalizacao, nucleation, glass and viscosidade. (Source: Lattes Curriculum)
| Articles published in Pesquisa FAPESP Magazine about the researcher: |
| Hecho a medida |
| Made to order |
| Big data and new materials |
| <em>Big data</em> de materiales |
| Fragilidad superada |
| Fragility Overcome |
| Articles published in Pesquisa para Inovação FAPESP about the researcher: |
| Bioactive material is produced by 3D printing |
| News published in Agência FAPESP Newsletter about the researcher |
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| VEICULO: TITULO (DATA) |
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This project is focused on detailed numerical simulations of the effect of step-wise relaxation process on the nucleation of crystalline phases in glass or a supercooled glass-forming liquid. The parameters of the relaxation and crystallization processes - number and duration of relaxation steps, the distribution function of the number of crystals per unit volume, N(t) curves, partial ste…
Through fundamental research on structure-property relations, using complementary simulation, spectroscopic and functional characterization methods, we will map the "genome" and develop new active glasses and glass-ceramics with promising applications. For that, the core group of the Center will comprise 13 professors at USP and UFSCar (both located in São Carlos) who are experts in engin…
Through fundamental research on structure-property relations, using complementary simulation, spectroscopic and functional characterization methods, we will map the "genome" and develop new active glasses and glass-ceramics with promising applications. For that, the core group of the Center will comprise 13 professors at USP and UFSCar (both located in São Carlos) who are experts in engin…
(Only some records are available in English at this moment)
This project is focused on detailed numerical simulations of the effect of composition and relaxation process on the nucleation of crystalline phases in supercooled glass-forming liquids. The parameters of the crystallization process - the distribution function of the number of crystals per unit volume, N(t) curves, steady-state nucleation rates and time-lags - will be simulated and compa…
This project aims at exploring heating rate effects in crystal nucleation of glasses. Experiments are proposed in which defined heating rates will be used. Crystal number densities, nucleation rates and final microstructure of glass-ceramics resulting from these heat treatments will be measured. A systematic change in the heating rate allows for a correlation between these parameters from…
In order to obtain more information about the crystallization processes in vitreous samples, we requested to FAPESP, by means of the associated project CEPID (CeRTEV Proc. 2013 / 07793-6), the acquisition of the equipment: "X-ray spectrometer fluorescent model ZSX MODEL ZSX PRIMUS II ". The acquisition of the wavelength dispersive x-ray fluorescence spectrometer equipment (WDXRF) has, as …
(Only some records are available in English at this moment)
The present project is focused on the fundamental problem of crystal nuclei growth in supercooled liquids. Despite advances in laboratory experiments, it is still extremely difficult to experimentally determine certain key properties of growing tiny crystals as well as of highly metastable viscous liquids. New possibilities of learning about crystal growth at a microscopic level are avail…
Glasses are thermodynamically unstable materials. Hence, they spontaneously relax towards the supercooled liquid state. The structural relaxation process is an irreversible, time-dependent phenomenon, which may be experimentally detected by measuring some property over time at temperatures close to the glass transition. Although it is already reasonably known, glass relaxation still has m…
Glasses are a class of materials with fundamental importance for humankind stemming from numerous basic and high-technology applications. Due to the wide spectrum of attainable physical and mechanical properties glass research receives considerable attention from both private enterprises and academic research facilities worldwide. Despite all efforts, the characterization of these thermod…
(Only some records are available in English at this moment)
Seventy years after its proposal, Kauzmanns paradox remains as an amusing subject in glass science due to its association with a possible violation on the third laaw of thermodynamics. If his smooth extrapolations are correct, then a super-cooled liquid would have the same entropy as its stable isochemical crystal in a finitu temperature well below the laboratorial glass transition temper…
Glasses are thermodynamically unstable and they spontaneously relax towards the supercooled liquid (SCL). The relaxation time varies from seconds at temperatures above the glass transition to geological times in temperatures well below it. Structural relaxation is a steady and spontaneous process, which depends on the study temperature and the chemical composition of glasses. Relaxation o…
Opaque and translucent glass-ceramic materials can be obtained from lithium aluminum silicate (LAS) glass. In this material, the presence of a surface layer with thermal coefficient of expansion (TCE) much lower than that of the precursor glass leads to a material with surface tensions of compression. The mechanical strength is increased due to this effect, representing a promising materi…
(Only some records are available in English at this moment)
Glasses are thermodynamically unstable materials. Hence, they spontaneously relax towards the supercooled liquid state. The structural relaxation process is an irreversible, time-dependent phenomenon, which may be experimentally detected by measuring some property over time at temperatures close to the laboratory glass transition. Even though the kinetics of the structural relaxation proc…
The large increase in interest in aesthetic and functional oral aspects has led many people to switch from metal or metal alloys coated with porcelain to fixed ceramic prostheses. As a consequence, there has been a substantial increase in worldwide research involving dental materials in the past few years. In this scenario, a promising candidate for those applications is glass-ceramic pro…
The present project addresses the conduct of a research internship in the Institut für Physikalische Chemie, Westfälische Wilhelms - Universität, in Münster, Germany, through the program BEPE - Postdoctoral for a period of 03 months. The aim of this project is the structural characterization of 4 borate glasses and their respective isochemical crystals - using high resolution Solid State …
During the candidate's masters studies, new opaque and colored-transparent glass-ceramics of the MgO-Al2O3-SiO2 system were developed. At that time, only the hardness and indentation fracture toughness were measured by Vickers hardness test. Following these results, for his PhD project, two main objectives were proposed: the first is to reformulate the studied glasses to obtain colorless-…
(Only some records are available in English at this moment)
| 4 / 4 | Ongoing research grants |
| 29 / 19 | Completed research grants |
| 4 / 4 | Ongoing scholarships in Brazil |
| 48 / 36 | Completed scholarships in Brazil |
| 1 / 1 | Ongoing scholarships abroad |
| 4 / 4 | Completed scholarships abroad |
| 90 / 68 | All research grants and scholarships |
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