A furniture cleaning management system (FCMS) for a furniture affordance includes an indicator for indicating a state of the furniture affordance, a sensor option generating a signal indicating that the furniture affordance has been cleaned, and a processor receiving the trigger signal from the sensor option and causing the indicator to indicate that the furniture affordance is a cleaned state. The state of the furniture affordance indicated by the indicator may be selected from the cleaned state and a needs cleaning state. The processor may cause the indicator to indicate that the furniture affordance is in the needs cleaning state according to a schedule of furniture affordance occupancy, a schedule of furniture affordance cleaning, or as a consequence of sensing a user occupancy state at the furniture affordance.

A UV radiation sensor that includes an area that is filled with a dielectric material, the area comprises a first portion of a first thickness and a second trench portion with dielectric of a second thickness, wherein the first thickness is smaller than the second thickness; a floating gate that comprises a first floating gate portion that is positioned above the first area portion and a second floating gate portion that is positioned above the trench portion, wherein the second floating gate portion comprises multiple segments, wherein there are one or more gaps between two or more of the multiple segments; a charging element for charging the floating gate; and a readout element for reading the floating gate.

A computer system and the computer-implemented method of generating and providing skin or hair care product recommendations to a subject, wherein the method comprises determining, by a computing device, more than one pollutant exposure amount for the subject; determining, by the computing device, a target exposure limit for each pollutant; determining, by the computing device, pollutants to which the subject has the highest exposure; and providing, by the computing device, at least one skin or hair care product recommendation to the subject, wherein the recommendation is based on the pollutants to which the subject has the highest exposure.

A system for monitoring ultraviolet (UV) exposure of a wearer. The system comprises a wearable device operable to sense UV radiation levels to which the wearer is exposed, and to transmit UV radiation information. The system further comprises an external computing device in remote communication with the wearable device, operable to receive the UV radiation information from the wearable device and configured to determine the wearer's real-time UV index value and the wearer's daily cumulative percentage of minimal erythema dose based upon the UV radiation information.

The present disclosure teaches a UV dosimeter comprising a UV-sensitive layer and a barrier that protects the UV-sensitive layer. The barrier is permeable to oxygen but impermeable to water and, thus, protects the UV-sensitive layer from water while allowing exposure of the UV-sensitive layer to oxygen. The UV-sensitive layer is accessible to both UV radiation and visible light. The UV-sensitive layer comprises a mixture of a semiconductor material, a UV-oxidizable dye, a sacrificial electron donor, and a matrix material. The semiconductor material has a band gap that corresponds to photon energy of the UV radiation. The dye has both an oxidation state and a reduction state. The oxidation state of the dye is visibly distinguishable from the reduction state of the dye. The sacrificial electron donor oxidizes when exposed to UV radiation. The matrix provides structural integrity to the mixture.

An ultraviolet-ray detecting device, a smart apparatus and a fabricating method. The ultraviolet-ray detecting device has: a substrate (1); and a plurality of identification regions (2), wherein each of the identification regions (2) includes an ultraviolet-photochromic marker (3) on the substrate (1) and a cover (4) covering the ultraviolet-photochromic marker (3), wherein ultraviolet-ray blocking capacities of the covers (4) in the identification regions (2) are different.

The present application relates to an all-optical detector and detection system, a response time test system, and a manufacturing method. The all-optical detector comprises a micro-nanofiber and an optical resonant cavity. The micro-nanofiber comprises transition regions and a uniform region. The uniform region is connected to the transition regions. The optical resonant cavity is provided in the uniform region. The optical resonant cavity is made of a semiconductor material. The all-optical detector provided in the present application detects light by means of the change of a resonance peak, achieves all-optical detection, and has a high signal-to-noise ratio.

An ultraviolet light generation target includes a light emitting layer. The light emitting layer contains a YPO.sub.4 crystal to which at least scandium (Sc) is added, and receives an electron beam to generate ultraviolet light. Further, a method of manufacturing the ultraviolet light generation target includes a first step of preparing a mixture containing yttrium (Y) oxide, Sc oxide, phosphoric acid, and a liquid, a second step of evaporating the liquid, and a third step of firing the mixture.

Composite material can include a matrix material, a fiber dispersed in the matrix material, and an ultraviolet (UV)-light sensitive mechanophore grafted to a surface of the fiber. A method for making a fiber-reinforced polymer composite can include contacting a fiber in a first solution, rinsing and then drying intermediate fiber, contacting dried fiber in a third solution, rinsing, and then drying the rinsed fiber thereby generating functionalized fiber that is sensitive to ultraviolet light. The functionalized fiber can be combined with a polymer matrix material, cured, and irradiated, thereby generating a fiber-reinforced polymer composite.

An air sanitizer generates active airflow utilizing ultraviolet spectrum of light in the UV-C band (200-280 nm). The source of the UV-C is an array of light emitting diodes (LED) that shine the UV-C down a housing of the air sanitizer. A fan draws the contaminated air into the housing. The contaminated air is sanitized by the UV-C light inside the housing and is expelled through apertures at the other end of the housing. Leaking of the potential harmful UV-C light outside of the housing is eliminated by an optical baffle covering the apertures. The electronics design for the air sanitizer contains an LED driver with temperature compensation to optimize the service life of the LEDs. A UV light flux detector facing the UV-C LEDs measures the relative reduction of UV light flux over time and reports the efficacy of the UV-C LEDs during the operation of the air sanitizer.