Abstract: A photocurable composition for stereolithographic three-dimensional printing, wherein the photocurable composition comprises a photoreactive oligomer component comprising a hydrophobic oligomer comprising a photoreactive end group, a photoreactive monomer component comprising a photoreactive monomer having a photoreactive end group, and a photoinitiation composition comprising a photoinitiator; the photocurable composition has a viscosity of 250 to 10,000 centipoise at 22° C., determined using a Brookfield viscometer; and the photocured composition has a dielectric loss of less than 0.010, preferably less than 0.008, more preferably less than 0.006, most preferably less than 0.004, each determined by split-post dielectric resonator testing at 10 gigahertz at 23° C.

Abstract: A photocurable composition for stereolithographic three-dimensional printing, wherein the photocurable composition comprises a photoreactive oligomer component comprising a hydrophobic oligomer comprising a photoreactive end group, a photoreactive monomer component comprising a photoreactive monomer having a photoreactive end group, and a photoinitiation composition comprising a photoinitiator; the photocurable composition has a viscosity of 250 to 10,000 centipoise at 22° C., determined using a Brookfield viscometer; and the photocured composition has a dielectric loss of less than 0.010, preferably less than 0.008, more preferably less than 0.006, most preferably less than 0.004, each determined by split-post dielectric resonator testing at 10 gigahertz at 23° C.

Abstract: A sensor apparatus includes a first of a plurality of layers having a top layer, a bottom layer, and at least one intermediate layer having an electrical conductor layer, each of the top layer, the bottom layer, and the at least one intermediate layer is disposed in direct contact with a respective adjacent layer. A second of the plurality of layers is disposed in direct contact with the first plurality of layers such that the bottom layer of the second plurality of layers is disposed in direct contact with the top layer of the first plurality of layers. The first and second plurality of layers are productive of a piezoelectric voltage absent of an external current producing device and in response to being deformed, and are productive of a change in capacitance in response to being deformed.

Abstract: A stereolithography method of manufacture of a polymer structure having a spatially gradient dielectric constant, including: providing a volume of a liquid, radiation-curable composition; irradiating a portion of the liquid, radiation-curable composition with activating radiation in a pattern to form a layer of the polymer structure; contacting the layer with the liquid, radiation-curable composition; irradiating the liquid, radiation-curable composition with activating radiation in a pattern to form a second layer on the first layer; and repeating the contacting and irradiating to form the polymer structure, wherein the polymer structure comprises a plurality of unit cells wherein each unit cell is integrally connected with an adjacent unit cell, each unit cell is defined by a plurality of trusses formed by the irradiation, wherein the trusses are integrally connected with each other at their respective ends, and the trusses of each unit cell are dimensioned to provide the spatially gradient dielectric const

Abstract: A method of making a dielectric, Dk, electromagnetic, EM, structure, includes: providing a first mold portion comprising substantially identical ones of a first plurality of recesses arranged in an array; filling the first plurality of recesses with a curable first Dk composition having a first average dielectric constant greater than that of air after full cure; placing a substrate on top of and across multiple ones of the first plurality of recesses filled with the first Dk composition, and at least partially curing the curable first Dk composition; and, removing the substrate with the at least partially cured first Dk composition from the first mold portion, resulting in an assembly having the substrate and a plurality of Dk forms including the at least partially cured first Dk composition, each of the plurality of Dk forms having a three dimensional, 3D, shape defined by corresponding ones of the first plurality of recesses.

Abstract: A dielectric lens, includes: a three-dimensional, 3D, body of dielectric material having a spatially varying dielectric constant, Dk; the 3D body having at least three regions R(i) with local maxima of dielectric constant values Dk(i) relative to surrounding regions of respective ones of the at least three regions R(i), locations of the at least three regions R(i) being defined by local coordinates of: azimuth angle(i), zenith angle(i), and radial distance(i), relative to a particular common point of origin associated with the 3D body, where (i) is an index that ranges from 1 to at least 3; wherein the spatially varying Dk of the 3D body is configured to vary as a function of the zenith angle between a first region R(1) and a second region R(2) at a given azimuth angle and a given radial distance.

Abstract: A stereolithography method of manufacture of a polymer structure having a spatially gradient dielectric constant, including: providing a volume of a liquid, radiation-curable composition; irradiating a portion of the liquid, radiation-curable composition with activating radiation in a pattern to form a layer of the polymer structure; contacting the layer with the liquid, radiation-curable composition; irradiating the liquid, radiation-curable composition with activating radiation in a pattern to form a second layer on the first layer; and repeating the contacting and irradiating to form the polymer structure, wherein the polymer structure comprises a plurality of unit cells wherein each unit cell is integrally connected with an adjacent unit cell, each unit cell is defined by a plurality of trusses formed by the irradiation, wherein the trusses are integrally connected with each other at their respective ends, and the trusses of each unit cell are dimensioned to provide the spatially gradient dielectric const

Abstract: A photocurable composition for stereolithographic three-dimensional printing, wherein the photocurable composition comprises a photoreactive oligomer component comprising a hydrophobic oligomer comprising a photoreactive end group, a photoreactive monomer component comprising a photoreactive monomer having a photoreactive end group, and a photoinitiation composition comprising a photoinitiator; the photocurable composition has a viscosity of 250 to 10,000 centipoise at 22° C., determined using a Brookfield viscometer; and the photocured composition has a dielectric loss of less than 0.010, preferably less than 0.008, more preferably less than 0.006, most preferably less than 0.004, each determined by split-post dielectric resonator testing at 10 gigahertz at 23° C.

Abstract: A stereolithography method of manufacture of a polymer structure having a spatially gradient dielectric constant, including: providing a volume of a liquid, radiation-curable composition; irradiating a portion of the liquid, radiation-curable composition with activating radiation in a pattern to form a layer of the polymer structure; contacting the layer with the liquid, radiation-curable composition; irradiating the liquid, radiation-curable composition with activating radiation in a pattern to form a second layer on the first layer; and repeating the contacting and irradiating to form the polymer structure, wherein the polymer structure comprises a plurality of unit cells wherein each unit cell is integrally connected with an adjacent unit cell, each unit cell is defined by a plurality of trusses formed by the irradiation, wherein the trusses are integrally connected with each other at their respective ends, and the trusses of each unit cell are dimensioned to provide the spatially gradient dielectric const

Abstract: A photocurable composition for stereolithographic three-dimensional printing, wherein the photocurable composition comprises a photoreactive oligomer component comprising a hydrophobic oligomer comprising a photoreactive end group, a photoreactive monomer component comprising a photoreactive monomer having a photoreactive end group, and a photoinitiation composition comprising a photoinitiator; the photocurable composition has a viscosity of 250 to 10,000 centipoise at 22° C., determined using a Brookfield viscometer; and the photocured composition has a dielectric loss of less than 0.010, preferably less than 0.008, more preferably less than 0.006, most preferably less than 0.004, each determined by split-post dielectric resonator testing at 10 gigahertz at 23° C.

Abstract: A method of making a dielectric, Dk, electromagnetic, EM, structure, includes: providing a first mold portion comprising substantially identical ones of a first plurality of recesses arranged in an array; filling the first plurality of recesses with a curable first Dk composition having a first average dielectric constant greater than that of air after full cure; placing a substrate on top of and across multiple ones of the first plurality of recesses filled with the first Dk composition, and at least partially curing the curable first Dk composition; and, removing the substrate with the at least partially cured first Dk composition from the first mold portion, resulting in an assembly having the substrate and a plurality of Dk forms including the at least partially cured first Dk composition, each of the plurality of Dk forms having a three dimensional, 3D, shape defined by corresponding ones of the first plurality of recesses.

Abstract: A dielectric lens, includes: a three-dimensional, 3D, body of dielectric material having a spatially varying dielectric constant, Dk; the 3D body having at least three regions R(i) with local maxima of dielectric constant values Dk(i) relative to surrounding regions of respective ones of the at least three regions R(i), locations of the at least three regions R(i) being defined by local coordinates of: azimuth angle(i), zenith angle(i), and radial distance(i), relative to a particular common point of origin associated with the 3D body, where (i) is an index that ranges from 1 to at least 3; wherein the spatially varying Dk of the 3D body is configured to vary as a function of the zenith angle between a first region R(1) and a second region R(2) at a given azimuth angle and a given radial distance.

Abstract: An electromagnetic, EM, device includes: a 3D body made from a dielectric material having a proximal end and a distal end; the 3D body having a first region toward the center of the 3D body made from a dielectric material having a first average dielectric constant, the first region extending at least partially to the distal end of the 3D body; and the 3D body having a second region outboard of the first region made from a dielectric material other than air having a second average dielectric constant that is greater than the first average dielectric constant, the second region extending from the proximal end to the distal end of the 3D body.

Abstract: A photocurable composition for stereolithographic three-dimensional printing, wherein the photocurable composition comprises a photoreactive oligomer component comprising a hydrophobic oligomer comprising a photoreactive end group, a photoreactive monomer component comprising a photoreactive monomer having a photoreactive end group, and a photoinitiation composition comprising a photoinitiator; the photocurable composition has a viscosity of 250 to 10,000 centipoise at 22° C., determined using a Brookfield viscometer; and the photocured composition has a dielectric loss of less than 0.010, preferably less than 0.008, more preferably less than 0.006, most preferably less than 0.004, each determined by split-post dielectric resonator testing at 10 gigahertz at 23° C.

Abstract: An electromagnetic, EM, device includes: a 3D body made from a dielectric material having a proximal end and a distal end; the 3D body having a first region toward the center of the 3D body made from a dielectric material having a first average dielectric constant, the first region extending at least partially to the distal end of the 3D body; and the 3D body having a second region outboard of the first region made from a dielectric material other than air having a second average dielectric constant that is greater than the first average dielectric constant, the second region extending from the proximal end to the distal end of the 3D body.

Abstract: A stereolithography method of manufacture of a polymer structure having a spatially gradient dielectric constant, including: providing a volume of a liquid, radiation-curable composition; irradiating a portion of the liquid, radiation-curable composition with activating radiation in a pattern to form a layer of the polymer structure; contacting the layer with the liquid, radiation-curable composition; irradiating the liquid, radiation-curable composition with activating radiation in a pattern to form a second layer on the first layer; and repeating the contacting and irradiating to form the polymer structure, wherein the polymer structure comprises a plurality of unit cells wherein each unit cell is integrally connected with an adjacent unit cell, each unit cell is defined by a plurality of trusses formed by the irradiation, wherein the trusses are integrally connected with each other at their respective ends, and the trusses of each unit cell are dimensioned to provide the spatially gradient dielectric const

Abstract: A polyimide composition that includes a polyimide having a linear coefficient of thermal expansion of less than or equal to 1 ppm/° C., or ?0.5 to 0.5 ppm/° C.; and a fluoropolymer; wherein the polyimide composition has a permittivity of less than or equal to 5, or less than or equal to 3.5 at a frequency of 10 GHz.

Abstract: A subassembly for a display device includes a display component having an outer display surface and an opposite inner surface; a compressible pressure pad including a plurality of nonwoven fibers having an average diameter of 100 micrometers or less, disposed on the inner surface of the display component; and an internal component disposed on a side of the compressible pressure pad on a side opposite the display component. Methods for reducing ripple effect and improving impact absorption in a display device are also described.

Abstract: A sensor apparatus includes a first of a plurality of layers having a top layer, a bottom layer, and at least one intermediate layer having an electrical conductor layer, each of the top layer, the bottom layer, and the at least one intermediate layer is disposed in direct contact with a respective adjacent layer. A second of the plurality of layers is disposed in direct contact with the first plurality of layers such that the bottom layer of the second plurality of layers is disposed in direct contact with the top layer of the first plurality of layers. The first and second plurality of layers are productive of a piezoelectric voltage absent of an external current producing device and in response to being deformed, and are productive of a change in capacitance in response to being deformed.

Abstract: A method for the manufacture of a polymer foam composite includes forming a polymer foam that is at least partially uncured; contacting the formed polymer foam with a fibrous mat including a plurality of nonwoven fibers having an average diameter of 100 um or less under conditions effective to infiltrate a portion of the polymer foam into the mat, to provide a pre-composite; and curing the pre-composite to form the polymer foam composite. The pre-composite includes a polymer foam layer and an intermixed layer including the fibrous mat and the same polymer as the polymer of the polymer foam layer. The polymer foam composite includes a cured polymer foam layer and an intermixed layer integrally bonded to the first layer, wherein the intermixed layer includes the fibrous mat and a cured polymer the same as the polymer of the cured polymer foam layer.