4 documents found, page 1 of 1
Three-dimensional nanoscale morphological surface analysis of polymeric particl...
Fonseca Filho, Henrique Duarte da
Measurement of wood surface roughness in Dinizia excelsa Ducke using an atomic ...
Conceição, Willian Silva da; Matos, Robert Saraiva; Melo, Ituany da Costa; Ramos, Glenda Quaresma; Zayas, Fidel GuereiroMeasurement techniques of nanoscale parameters have been vastly explored nowadays. In systems such as wood that possess anisotropic surfaces, these techniques provide reliable data on the surface morphology and related parameters. The atomic force microscope (AFM) and optical microscope were used to investigate the roughness and surface morphology of Dinizia excelsa. Cuts were made in different directions gener...
Wettability and morphology of the leaf surface in cashew tree from the Amazon, ...
Ramos, Glenda Quaresma; Albuquerque, Marta Duarte da Fonseca de; Ferreira, José Luiz Pinto; Cotta, Eduardo Adriano; Fonseca Filho, Henrique Duarte daLeaves surfaces, which represent an interface with plants and the environment, have several structures with specific functions. Some foliar properties, including wettability and mechanical containment, are inferred in terms of cellular adaptation and the presence or absence of cuticular wax. Various morphological parameters, ranging from macro- to nano scales, are analyzed and contribute to the study of taxonom...
Dissipated energy in tapping mode by the atomic force microscope
Lopes, Gerson Andesron de Carvalho; Fonseca Filho, Henrique Duarte daDissipated energy measurements between a tip of an AFM and a sample have been used to analyze variations in mechanical and tribological properties of materials, using tapping mode AFM to generate topography and phase contrast images. Furthermore it's possible to perform indentations in the material with this operation mode and to create micro-controlled defects, in diameter and depth, to growing of quantum dots...