We experimentally demonstrate an all-diffractive optical setup for digital lensless holographic microscopy with easy wavelength line selection and micrometric resolution. In the proposed system, an ultrashort laser pulse is focused with a diffractive lens (DL) onto a pinhole of diameter close to its central wavelength to achieve a highly spatially coherent illumination cone as well as a spectra...

In this work, a novel equivalent electric circuit for modeling liquid crystal microlenses is proposed. This model is focused on explaining a lens behavior at the micrometric scale, using its manufacturing parameters. It suggests an approach to predict the solution of the voltage gradient distribution across a microlens. An interesting feature of the model is that it provides an analytical solut...

In oxide nuclear fuels, at high burn-up or during temperature periods such as ramp tests, out-of-pile heating any irradiations linear heat rates, fission gases can form micrometric quasi-micrometric bubbles. During nominal operations, these bubbles participate to the pellet swelling, decrease of fuel thermal conductivity and are involved in mechanisms leading gas release. events involving a inc...

Micrometric 2D mapping of distinct elements was performed in soil grain-size fractions a sample using the micro-X-ray Fluorescence (µ-XRF) technique. The collected vicinity São Domingos, an old mine massive sulphide minerals located Portuguese Iberian Pyrite Belt. As expected, elemental high-grade concentrations metals and metalloids dependence existent natural geochemical anomaly were detected...

In this study, the vertical, transverse and oblique diameters of the spinal cord segments (C1, C6, C12, C18, T1, T4, L1, L4, L6 and L8) and the ratio of gray matter to white matter in chick (l month) and adult (18 months) male ostriches, each group consisted of 3 animals, were measured with standard micrometric method using 6 μm thick sections by light microscope. With advancement of age, the r...

Dip-coated films, which are widely used in the coating industry, are usually measured by capacitive methods with micrometric precision. For the first time to our knowledge, we have applied an interferometric determination of the evolution of thickness in real time to nonvolatile Newtonian mineral oils with several viscosities and distinct dip withdrawing speeds. The evolution of film thickness ...