Abstract: Metallic nanohole (23) arrays on nanowells (22) with a controlled depth and methods of making and using the same are provided. A mesh pattern of metallic layer (8) having an array of nanoholes is provided on an array of nanowells, aligned with the openings of the respective nanowells. The aspect ratios (D:W) of the nanowells are controlled to control the deposition of metal into the nanowells.

Abstract: A sensor element and sensor comprising the sensing element. The sensor includes, in order, an absorptive layer, a metallic layer and an optically transparent, dielectric substrate. The absorptive layer has a polymer of intrinsic microporosity having an average pore volume of at least 0.1 nm3. The metallic layer has a plurality of openings each extending from the first to the second major surface of the metallic layer, the openings having a pitch in a range from 50 nm to 5000 nm, wherein the openings have an opening size in a range from 5% to 95% percent of the pitch.

Abstract: Article comprising a polymeric substrate having a first major surface comprising a plurality of particles attached thereto with plasmonic material on the particles. Articles described herein are useful, for example, for indicating the presence, or even the quantity, of an analyte.

Abstract: A composition and method of detecting an analyte in a sample using the composition, the composition including: a liquid that includes water; a plurality of first hollow glass bubbles in the liquid; a plurality of covalently attached first affinity groups that are covalently attached to at least some of the plurality of first hollow glass bubbles; and a plurality of first detector compound molecules not covalently bonded to the plurality of first hollow glass bubbles; wherein the first detector compound molecules include a first detectable group that is detected at a first wavelength; and wherein the first hollow glass bubbles have: a density of less than 0.60 gram/mole; a span of less than 1.0; and a plurality of covalently attached first affinity groups.

Abstract: Fluid monitoring devices (100,200,700) including an impedance sensing element (110,210,410,510,610,710,61,62,63) are provided. The impedance sensing element (110,210,410,510,610,710,61,62,63) includes a calibration portion (212, 412, 512, 612, 712) and a measurement portion (214,414,514,614,714), and the fluid monitoring devices (100,200,700) can be self-calibrated in real time based on calibration data from the calibration portion (212,412,512,612,712).

Abstract: Post-steam sterilization wet pack indicators are described. The indicators generally comprise a moisture-impermeable layer having a first surface and a moisture-indicating layer comprising a reversible colorimetric steam-sterilization-compatible moisture-indicating medium. The moisture-indicating layer is disposed on or near the first surface of the moisture-impermeable layer. The area of the moisture-indicating layer is dimensionally smaller than the moisture-impermeable layer such that the edges of the moisture-impermeable layer extend beyond the edges of the moisture-indicating layer. Articles and packages comprising wet pack indicators are also described.

Abstract: Assay devices are provided including a receptacle having a sample entry port; a plunger disposed within the receptacle; at least one reagent; a membrane attached to a first surface of the plunger; a wick providing capillary force; and a detection zone. The membrane includes a target conjugate zone in which affinity components are disposed. Capture compounds are immobilized in a detection zone, which is located between the target conjugate zone and the wick. A method of detecting a target analyte is also provided, including providing the assay device; providing a sample suspected to contain a target analyte; adding the sample onto the device; allowing the sample to travel along the membrane until the sample reaches the detection zone; immobilizing the target analyte through reaction of the target analyte with the capture compounds; reacting the immobilized target analyte with a reagent to generate a detectable signal; and detecting the generated signal.

Abstract: Article comprising a polymeric substrate having a first major surface comprising a plurality of particles attached thereto with plasmonic material on the particles. Articles described herein are useful, for example, for indicating the presence, or even the quantity, of an analyte.

Abstract: A vapor sensor comprises a housing with an inlet opening in fluid communication with a sensor element within the housing. Standoff member(s) are positioned to maintain a gap between the inlet opening and a skin site. An operating circuit is in electrical communication with the sensor element and communicatively coupled to an output member. In use, the output member generates a sensory output indicative to an operator regarding concentration of alcoholic vapor in the ambient atmosphere proximate the skin site upon receiving communication from the operating circuit.

Abstract: Provided is a system for directly sensing, measuring, or monitoring the temperature of an electrical conductor (31) of a power cable (10). A temperature sensitive capacitor (21C) is disposed in direct thermal contact with the electrical conductor (31). The temperature sensitive capacitor (21C) includes a dielectric material that has a dielectric constant variable with the temperature of the electrical conductor (31). The temperature of the electrical conductor (31) can be sensed, measured, or monitored by measuring the capacitance of the temperature sensitive capacitor (21C).

Abstract: Three-dimensional polymeric article (100) having first (101) and second (102) opposed major surfaces, a first dimension perpendicular to a second dimension, a thickness orthogonal to the first and second dimensions, and a plurality of alternating first (107) and second (109) polymeric regions along the first or second dimensions, wherein the first (107) and second (108) regions extend at least partially across the second dimension, wherein the first regions (107) are in a common plane (115) and wherein some of the second regions (108) project outwardly from the plane (115) in a first direction (generally perpendicular from the plane), and some of the second regions (108) project outwardly from the plane (115) in a second direction that is generally 180 degrees from the first direction, where the first regions (107) have a first crosslink density, wherein the second regions (108) have a second crosslink density, and wherein the second crosslink density of the second regions (108) are less than the first crossl

Abstract: Three-dimensional polymeric article (100) having first (101) and second (102) opposed major surfaces, a base body (103) having a first dimension, a second dimension perpendicular to the first dimension, and a thickness, wherein the thickness is orthogonal to the first and second dimensions, wherein the base body (103) comprises a plurality of alternating, adjacent first (107) and second (108) polymeric regions along the first dimension, wherein the second dimensions of the first (107) and second (108) regions extend at least partially across the second dimensions, wherein the first regions (107) have a first crosslink density, wherein the second regions (108) have a second crosslink density, wherein the second crosslink density of the second regions (108) are less than the first crosslink density of the first regions (107), wherein the first and second regions extend perpendicularly in two directions from a central plane (115) in the base body (103) parallel to the first and second dimensions of the polymeric

Abstract: A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.

Abstract: The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: • a carrier element (3) with a passageway for receiving the power-carrying conductor, • wherein the carrier element comprises an electrode (4) extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein • a conductor (1) of the power cable is operable as the second electrode of the voltage sensing device and wherein • the carrier element has a coefficient of thermal expansion that is less than 5×10^?6 1/K at 20 C.

Abstract: A sensor element includes a first conductive electrode having a first conductive member electrically coupled thereto; an absorptive dielectric layer comprising a polymer of intrinsic microporosity; and a second conductive electrode having a second conductive member electrically coupled thereto. The second conductive electrode comprises at least one noble metal, has a thickness of from 4 to 10 nanometers and is permeable to at least one organic vapor. The absorptive dielectric layer is at least partially disposed between the first conductive electrode and the second conductive electrode. A method of making the sensor element, and sensor device containing it, are also disclosed.

Abstract: Voltage sensor (1) for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (40), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (20), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (30), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (10), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.

Abstract: A flexible sensor patch includes a flexible base having outer and inner surfaces and a periphery, an adhesive layer disposed on at least a portion of the outer surface, a flexible porous cover secured to the flexible base along at least major portion of the periphery. The flexible porous cover and the flexible base collectively enclose at least a major portion of a sensor. The sensor comprises a capacitive sensor element. The capacitive sensor element comprises first and second conductive electrodes and a dielectric microporous material disposed therebetween. Methods of using the flexible sensor patch are also disclosed.

Abstract: A passive temperature-sensing apparatus, which includes a capacitive sensing element that includes a capacitive sensing composition that includes a ferroelectric ceramic material that exhibits a measurable electrical Curie temperature that is below 30 degrees C. The capacitive sensing composition exhibits a negative slope of capacitance versus temperature over the temperature range of from 30 degrees C. to 150 degrees C.

Abstract: Three-dimensional polymeric article (100) having first (101) and second (102) opposed major surfaces, a first dimension perpendicular to a second dimension, a thickness orthogonal to the first and second dimensions, and a plurality of alternating first (107) and second (109) polymeric regions along the first or second dimensions, wherein the first (107) and second (108) regions extend at least partially across the second dimension, wherein the first regions (107) are in a common plane (115) and wherein some of the second regions (108) project outwardly from the plane (115) in a first direction (generally perpendicular from the plane), and some of the second regions (108) project outwardly from the plane (115) in a second direction that is generally 180 degrees from the first direction, where the first regions (107) have a first crosslink density, wherein the second regions (108) have a second crosslink density, and wherein the second crosslink density of the second regions (108) are less than the first crossl

Abstract: A vapor sensor comprises a sensor element (110), a cooling member (140), and an operating circuit (160). The sensor element comprises: a first conductive electrode; a second conductive electrode; and a dielectric microporous material at least partially disposed between and contacting the first and second conductive electrodes. The cooling member is in contact with, and configured to cool, the sensor element. The operating circuit is in electrical communication with the first and second conductive electrodes, and is capable of creating a voltage difference between the first and second conductive electrodes such that the sensor element has a capacitance-related property, and monitoring a capacitance-related property of the sensor element. A method of using the vapor sensor to detect an analyte vapor is also disclosed.