An energy harvesting device for obtaining instantaneous energy from drops without needing of moving the drops along the device, in a reduced scale and combinable with other types of harvesting devices, the energy harvesting device comprising one or more triboelectric generators comprising a bottom electrode, a friction or triboelectric element placed over the bottom electrode, and at least two top exposed electrodes electrically connected placed over the triboelectric element and defining at least one gap between them, exposing the triboelectric element to the external environment so that on contacting a drop of liquid makes an electrical connection between the top electrodes varying instantaneously (microseconds range) the capacitance of the triboelectric generators.s

Disclosed is a device comprising: a piezoelectric or ferroelectric substrate (2) on which ice is deposited; electrodes (3), connected to the substrate (2); a vector network analyser (7), connected to the electrodes (3) and configured to determine the resonant frequency of the substrate (2); and an excitation module including a function generator (6) that communicates with the vector network analyser (7) and is connected to an amplifier (4), the amplifier being connected to the electrodes (3). The excitation module is configured to apply to the electrodes (3), by means of an automatic switch (8), an AC electrical signal having a frequency coinciding with the resonant frequency measured in the vector network analyser (7) and which changes gradually as the ice melts.

The process consists of the simultaneous deposition of a ceramic matrix, using a reactive magnetron sputtering source, and the evaporation of a metalorganic compound of at least one cation of the mixed oxide to be grown. The energy and strongly oxidizing plasma generated by the magnetron sputtering process is used to decompose the metalorganic precursor, leading to the reaction of the cation, coming from the metalorganic precursor, with the oxygen contained in the plasma, causing the deposition of an oxide film on the substrate. The metal is incorporated into the ceramic matrix in a proportion which depends on the relative speed of «evaporation» of the two sources involved.ormation of bone tissue without requiring the removal of the membrane.

The invention relates to a polymer lens comprising a hardening layer, an absorbent layer, and an interferential multilayer, and to a corresponding production method. Said polymer lens comprises a hardening layer, an interferential multilayer, and an absorbent layer therebetween. The absorbent layer is formed from a metal, a metal oxide, or a metal nitride that can produce a transparent layer using sputtering deposition, and also comprises cations of a colouring metal of the group formed by the transition elements that, in an oxidised form, have a cation that absorbs electromagnetic radiation in the visible spectrum. Between 10 atom % and 70 atom % of the cations, in relation to the predominant metallic cation in said absorbent layer, are said colouring metal cations.

The invention relates to a device to determine the adsorption/desorption isotherms and porosity in thin films, supported membranes, and directly supported nanostructured materials. For this purpose, the adsorption and desorption isotherms of the sample are determined and subsequently used to determine the type of porosity of the sample, as well as the pore volume and pore size distribution thereof, using solid surface thermodynamic and physicochemical concepts.

The present invention relates to a procedure for the reformation of gaseous or liquid fuels in mixtures with water and/or CO2 in a dielectric barrier discharge (DBD) plasma reactor. It is differentiated from other reformation procedures based on plasma techniques in that the design and characteristics of the reactor are conducive to having virtually the entire process lead to the production of mixtures of carbon monoxide and hydrogen, with virtually no contribution from higher hydrocarbons. This process takes place at low temperatures and has low electrical power consumption requirements. Furthermore, the present invention relates to a barrier discharge plasma reactor for the reformation of fuels comprising a power supply source, a cylindrical electrode and a dielectric device.

The invention relates to a method for preparing thin layers of inorganic oxides on substrates by means of plasma-assisted vapour phase deposition. The inventive method is different from other common methods in that organic layer deposition steps are included between the successive inorganic oxide deposition steps such that, during the inorganic layer deposition step, the previously-deposited organic part is eliminated by combustion. Said method is suitable for developing selective membranes that are used to separate and purify fluids and to produce and modify sensors for gases and humidity and electronic components