Abstract: There is described a method for making an array of micro-needles, comprising the steps of: depositing a plurality of drops of a liquid substance comprising a polymer on a surface of a starting substrate; positioning a pyroelectric substrate at a certain distance from the starting substrate in such a way that the drops deposited are positioned between said surface of the starting substrate and a surface of the pyroelectric substrate; varying the temperature of the pyroelectric substrate or a part thereof to induce on said surface of the pyroelectric substrate a charge density such that starting from the drops deposited, under the effect of an electrodynamic force, respective cones are formed having a tip facing towards the pyroelectric substrate; determining a consolidation of the cones, to form said micro-needles, preventing the tip of said cones from contacting said surfaces of the pyroelectric substrate.

Abstract: There is described a method for making an array of micro-needles, comprising the steps of: depositing a plurality of drops of a liquid substance comprising a polymer on a surface of a starting substrate; positioning a pyroelectric substrate at a certain distance from the starting substrate in such a way that the drops deposited are positioned between said surface of the starting substrate and a surface of the pyroelectric substrate; varying the temperature of the pyroelectric substrate or a part thereof to induce on said surface of the pyroelectric substrate a charge density such that starting from the drops deposited, under the effect of an electrodynamic force, respective cones are formed having a tip facing towards the pyroelectric substrate; determining a consolidation of the cones, to form said micro-needles, preventing the tip of said cones from contacting said surfaces of the pyroelectric substrate.

Abstract: Production and the distribution of pico and nano-drops, which are extracted by the effect of a strong electric field generated by pyroelectric effect, in particular, but not exclusively, from a sessile drop (a drop placed on a surface assumes a form termed “sessile”) or by a liquid film, and distributed on a dielectric substrate. The electric field is advantageously generated applying a heat source on the dielectric substrate or utilizing a laser source emitting in the infrared region. In this new approach, it is not necessary to use fixed electrodes, circuits, high tension generators or to design intentionally, and therefore to realize, pico- and nano-nozzles.

Abstract: The invention concerns a method for the controlled distribution of pico- or nano-volumes of a liquid, comprising the step of: A. Deposing the liquid as a film or separated sessile drops on a surface of a starting substrate; the liquid being extracted and distributed on the surface of a substrate called “destination substrate”, the method being characterized in that: —At least one between said starting substrate and destination substrate is a pyroelectric substrate; The method comprising the following further step: B.

Abstract: The invention concerns a holographic method with numerical reconstruction for obtaining an image of a three-dimensional object, said method employing a digitalised hologram of an object, and comprising a step A. wherein, starting from the digitalised hologram, extracting a phase image of said object corresponding to a bidimensional matrix MD of distance values; a step B. wherein a mono-dimensional subassembly SD of the distance value assembly present in matrix MD of the method step A is selected, subassembly SD containing distance values dk; a step C. wherein for each distance value dk, extracting from matrix MD a iso-level assembly IQdk corresponding to a mono-dimensional assembly of bidimensional coordinates of said object, a step D. wherein for each distance value dk, reconstructing, starting from the digitalised hologram, a bidimensional matrix IMdk of intensity values relevant to said object; a step E.

Abstract: A method for measuring and two-dimensional mapping of electro-optical properties of materials using a Reflective Grating Interferometer (RGI) includes projecting a substantially coherent and monochromatic electromagnetic beam subjected to a homogeneous electrical field so the beam is enlarged to have a two-dimensional cross section comparable with dimensions of the material, dividing the electromagnetic beam into one part that crosses the material and another part that travels undisturbed, recomposing the two beams on a recombination element of the RGI, detecting the recombined beam by a device suited to two-dimensional detection of such beam. The method also includes: E. obtaining phase variation ?ø(x,y) between the divided beams; F. varying the applied electrical field value and repeating the detection steps; G.

Abstract: A holographic method with numerical reconstruction for obtaining an image of a three-dimensional object, employs a digitalized hologram of an object or of a portion thereof, and includes starting from the digitalized hologram, extracting a phase image of the object corresponding to a matrix MD of distance values, selecting a subassembly SD of the distance value assembly present in matrix MD, subassembly SD containing distance values dk, extracting from matrix MD an iso-level assembly IQdk of corresponding bidimensional coordinate of the object; reconstructing, for each distance value dk, a bidimensional matrix IMdk of intensity values relevant to the object; extracting, from each bidimensional matrix IMdk, a bidimensional IFdk of intensity values; and starting from the intensity values, reconstructing the three-dimensional intensity image of the object.

Abstract: A holographic method with numerical reconstruction for obtaining an image of a three-dimensional object, employs a digitalized hologram of an object or of a portion thereof, and includes starting from the digitalized hologram, extracting a phase image of the object corresponding to a matrix MD of distance values, selecting a subassembly SD of the distance value assembly present in matrix MD, subassembly SD containing distance values dk, extracting from matrix MD an iso-level assembly IQdk of corresponding bidimensional coordinate of the object; reconstructing, for each distance value dk, a bidimensional matrix IMdk of intensity values relevant to the object; extracting, from each bidimensional matrix IMdk, a bidimensional IFdk of intensity values; and starting from the intensity values, reconstructing the three-dimensional intensity image of the object.