Abstract: A reference-standard device (20) for calibration of measurements of length, comprising a substrate (10) that includes a surface (10a) having at least one calibration pattern (11). According to the invention, this pattern comprises a plurality of nanometric structures (14), said nanometric structures (14) having one and the same section in the plane of said surface and having the same nanometric dimensions, in particular less than 50 nm, said nanometric structures (14) being arranged at a distance from one another by a constant pitch of nanometric length, in particular less than 50 nm, in at least one direction, said nanometric structures (14) being arranged within spatial regions (12) delimited in one or more directions in the plane of the substrate (10), said nanometric structures (14) being obtained via application to said substrate (10) of a process of nanostructuring (100) by means of a mask of block copolymers in order to make calibrations of measurements of length of the order of nanometres.

Abstract: A lipophilic copolymer including polar multi-blocks having general formula (I): [(ByAk)s]t(AjCm)??(I) wherein: B represents at least one monomer unit deriving from a lipophilic monomer having general formula (II): wherein: X represents a hydrogen atom; or a methyl group; R is selected from C1-C50 alkyl groups, linear or branched; A represents at least one monomer unit deriving from a polar monomer selected from: (a) compounds having general formula (III): wherein X represents a hydrogen atom or a methyl group and n represents an integer comprised between 0 and 4; (b) (meth)acrylamide or (meth)acrylamides substituted on the nitrogen atom with one or two C1-C4 alkyl groups linear or branched; (c) di-(C1-C4)-alkylamino-(C1-C4)-alkyl (meth)acrylates; C represents at least one monomer unit deriving from a polar polyfunctional monomer having general formula (IV): Z—(W)p??(IV) wherein: Z represents a group containing carbon, hydrogen and, optionally, oxygen;

Abstract: A reference-standard device (20) for calibration of measurements of length, comprising a substrate (10) that includes a surface (10a) having at least one calibration pattern (11). According to the invention, this pattern comprises a plurality of nanometric structures (14), said nanometric structures (14) having one and the same section in the plane of said surface and having the same nanometric dimensions, in particular less than 50 nm, said nanometric structures (14) being arranged at a distance from one another by a constant pitch of nanometric length, in particular less than 50 nm, in at least one direction, said nanometric structures (14) being arranged within spatial regions (12) delimited in one or more directions in the plane of the substrate (10), said nanometric structures (14) being obtained via application to said substrate (10) of a process of nanostructuring (100) by means of a mask of block copolymers in order to make calibrations of measurements of length of the order of nanometres.

Abstract: Hybrid concentrated photovoltaic device comprising: (i) at least one luminescent solar concentrator (LSC) having the shape of a polygonal, circular, or elliptical plate, comprising at least one photoluminescent compound having a spectral range of absorption and a spectral range of emission; (ii) at least one micrometric or sub-micrometric dielectric photonic structure, optically coupled to said luminescent solar concentrator (LSC), said micrometric or sub-micrometric dielectric photonic structure being able to induce diffusion and/or diffraction of sunlight, preferably diffraction, within said luminescent solar concentrator (LSC), in a spectral range where there is no absorption of said photoluminescent compound; (iii) at least one photovoltaic cell positioned on the outside of at least one side of said luminescent solar concentrator (LSC).

Abstract: Core-shell particles having a core of at least one tetrafluoroethylene (TFE) polymer and having an average primary particle size of less than 50 nm; and a shell of at least one acrylic polymer having recurring units, more than 50% by moles of which being derived from at least one ethylenically unsaturated monomer having directly bonded to one of the sp2 carbon atoms of the ethylenic unsaturation at least one group of formula: Process for manufacturing core-shell particles. Use as ingredients/additives in polymer compositions, polymer composition and articles containing the same.

Abstract: The invention relates to core-shell particles, said particles comprising: a core consisting essentially of at least one tetrafluoroethylene (TFE) polymer [polymer (F)], said core having an average primary particle size of less than 100 nm a shell consisting essentially of at least one high performance polymer [polymer (HPP)], wherein the polymer (HPP) is chosen among polycondensation polymers that have a heat deflection temperature (HDT) of above 80° C. under a load of 1.82 MPa when measured according to ASTM D648. The core-shell particles of the invention advantageously allow obtaining molded articles with homogeneous properties, both when used alone and when used as additive, as they generally do not undergo segregation phenomena. Still objects of the inventions are the process for manufacturing said core-shell particles, the use of said particles as additives, the composition and the articles thereof.

Abstract: The invention relates to microparticles that may be used for antigen delivery and vaccine immunization strategies. The invention in particular relates to microparticles that are useful in the prophylaxis and treatment of human immunodeficiency virus (HIV) infections.

Abstract: Compositions containing core-shell particles having a core polytetrafluoroethylene-based polymers (PTFE) and shell styrene-based polymers (PS), wherein the particles contain an amount by weight of PTFE from 3 to 50%, preferably from 5 to 30% by weight, wherein the core PTFE particles have an average diameter from 5 to 100 nm, preferably from 10 to 70 nm, the core-shell particles having an average diameter from 10 to 170 nm, preferably from 20 to 100 nm.

Abstract: Compositions containing core-shell particles having a core polytetrafluoroethylene-based polymers (PTFE) and shell styrene-based polymers (PS), wherein the particles contain an amount by weight of PTFE from 3 to 50%, preferably from 5 to 30% by weight, wherein the core PTFE particles have an average diameter from 5 to 100 nm, preferably from 10 to 70 nm, the core-shell particles having an average diameter from 10 to 170 nm, preferably from 20 to 100 nm.