The present invention relates to a washer for a secondary battery including a film layer and an adhesive layer disposed on at least one surface of the film layer, wherein the adhesive layer includes an adhesive component and an indicator component, and the indicator component is fat-soluble, a secondary battery including the same, and a method for manufacturing the washer.

The present invention relates to a washer for a secondary battery including a film layer and an adhesive layer disposed on at least one surface of the film layer, wherein the adhesive layer includes an adhesive component and an indicator component, and the indicator component is fat-soluble, a secondary battery including the same, and a method for manufacturing the washer.

The invention relates to a retroreflector able to be placed in contact with an environment, comprising, by way of constituent material, a material enabling a parameter of said environment to be picked up, said material modifying the optical transmission properties of the retroreflector when said parameter is present, said retroreflector being able to receive an incident light beam via a first face and to reemit a light beam via said first face.

A mold sensor is configured with an enclosed chamber in which a nutrient-treated substrate is positioned. The mold sensor includes a sensing system that is configured to measure a property of the substrate that corresponds to a pH value of the substrate. A controller operates the sensing system and is programmed to detect a presence of mold growing in the chamber by estimating the pH value from the measured property.

A mold sensor is configured with an enclosed chamber in which a nutrient-treated substrate is positioned. The mold sensor includes a sensing system that is configured to measure a property of the substrate that corresponds to a pH value of the substrate. A controller operates the sensing system and is programmed to detect a presence of mold growing in the chamber by estimating the pH value from the measured property.

A visual indicating paste composition is provided which is capable of producing a detectable color change upon contact with an aqueous liquid. The paste composition includes: an indicator dye capable of changing color in the pH range between about 3 and about 11; an inorganic base capable of being converted to a more basic substance upon reaction with water; a liquid carrier (such as a polyalkylene glycol carrier); optionally, a gelling agent such as silica gel; and a proton donating compound such as a carboxylic acid or organosulfonic acid. When applied to a measuring probe, the paste composition is particularly adapted for detecting the water level in the bottom of tanks and delivery systems containing a fuel such as gasoline by producing a clear detectable color change without bleeding or run-off upon contact with an aqueous liquid. The paste composition exhibits long shelf life and improved water tolerance.

A visual indicating paste composition is provided which is capable of producing a detectable color change upon contact with an aqueous liquid. The paste composition includes: an indicator dye capable of changing color in the pH range between about 3 and about 11; an inorganic base capable of being converted to a more basic substance upon reaction with water; a liquid carrier (such as a polyalkylene glycol carrier); optionally, a gelling agent such as silica gel; and a proton donating compound such as a carboxylic acid or organosulfonic acid. When applied to a measuring probe, the paste composition is particularly adapted for detecting the water level in the bottom of tanks and delivery systems containing a fuel such as gasoline by producing a clear detectable color change without bleeding or run-off upon contact with an aqueous liquid. The paste composition exhibits long shelf life and improved water tolerance.

In an exemplary embodiment, a system for measuring smoke absorption into food products includes a surrogate that reacts to a presence of smoke in air ambient to the surrogate and the food products, the surrogate including an open container of a liquid and a probe in the form of a toroidal conductivity sensor that measures electrical conductivity of the liquid; wherein the electrical conductivity of the liquid increases as smoke is absorbed by the liquid and simultaneously into the food products; and a control that receives a signal from the toroidal conductivity sensor and in response generates a signal and/or a display indicative of the electrical conductivity of the liquid that corresponds to a selected amount of smoke absorption by the food products exposed to the smoke.

A wearable sweat sensor for detecting one or more analytes in human sweat comprises an optical module comprising at least one light source and at least one light detector; at least one sensor layer optically coupled to the optical module and having optical absorbance properties that are dependent on the concentration of a target analyte of said one or more analytes; and one or more processors in communication with the optical module. The one or more processors are configured to: cause light from the at least one light source to be transmitted towards, and/or through, the at least one sensor layer; obtain, from the at least one light detector, one or more optical signals reflected and/or transmitted from the at least one sensor layer; and determine, from at least one wavelength component of the one or more optical signals, a target analyte concentration.

A wearable sweat sensor for detecting one or more analytes in human sweat comprises an optical module comprising at least one light source and at least one light detector; at least one sensor layer optically coupled to the optical module and having optical absorbance properties that are dependent on the concentration of a target analyte of said one or more analytes; and one or more processors in communication with the optical module. The one or more processors are configured to: cause light from the at least one light source to be transmitted towards, and/or through, the at least one sensor layer; obtain, from the at least one light detector, one or more optical signals reflected and/or transmitted from the at least one sensor layer; and determine, from at least one wavelength component of the one or more optical signals, a target analyte concentration.