Photosensitizers are incorporated into articles, such a personal protective equipment. A method of applying continuous and consistent light includes fitting the articles with light sources and optical fibers to apply light to the areas of the articles incorporated with the photosensitizers. Photosensitizers can be applied to articles by various applicators in either a gel or solution. A gel can be particularly effective when used on hydrophobic surfaces. Photodynamic reactor systems can be used to determine the effective doses of photosensitizers and the light dosimetry which can then be applied for use with the articles.

In various implementations, systems and processes may generate hydrogen peroxide using a catalyst that includes titanium dioxide, silver, antimony, copper, and/or rhodium. The systems and processes may utilize an air stream in the presence of UV light and a catalyst to generate hydrogen peroxide. The generated hydrogen peroxide may be utilized to disinfect air and surfaces.

An approach for treating a fluid transport conduit with ultraviolet radiation is disclosed. A light guiding unit, operatively coupled to a set of ultraviolet radiation sources, encloses the fluid transport conduit. The light guiding unit directs ultraviolet radiation emitted from the ultraviolet radiation sources to ultraviolet transparent sections on an outer surface of the fluid transport conduit. The emitted ultraviolet radiation passes through the ultraviolet transparent sections, penetrates the fluid transport conduit and irradiates the internal walls. A control unit adjusts a set of operating parameters of the ultraviolet radiation sources as a function of the removal of contaminants from the internal walls of the fluid transport conduit.

An apparatus includes a substrate having a surface and a transparent photocatalyst coating secured on the surface of the substrate, wherein the transparent photocatalyst coating includes titanium oxide and a component selected from a fluorescent dye, ultra-fine glitter, indium tin oxide, aluminum zinc oxide, silver nitrate, and combinations thereof. The substrate is preferably selected from an appliance handle, doorknob, switch, keyboard, countertop, appliance handle, equipment button, touchscreen, handrail, light emitting device, and light cover. Such substrates are frequently touched by one or more users and may become contaminated. However, the transparent photocatalyst coating may be self-decontaminating.

An ultraviolet razor blade treatment system for providing a cleaning treatment to a shaving razor is disclosed. The ultraviolet razor blade treatment system can include a shaving razor cleaning unit that has at least one ultraviolet radiation source and sensor to clean surfaces of the shaving razor for purposes of disinfection, sterilization, and/or sanitization.

A light delivery system and method are provided to promote a photochemical reaction for disinfecting a surface. The system includes a light source and a light diffusing element operatively coupled to the light source and further embedded within a surface to be disinfected. The light diffusing element outputs light to the surface to promote a photochemical reaction to disinfect the surface. A low scatter light transmission medium may further be coupled between the light source and the light diffusing element to transmit light from the light source remotely to the light diffusing element.

Introducing ultraviolet (UV) light to interior portions of footwear alters the environment inside a shoe or other footwear to destroy microorganisms or inhibit their growth. Visible light can also be used to prevent further microorganism growth. Introducing forced air flow through the footwear removes dampness in and thereby deodorizes the footwear. A preferred embodiment comprises an adjustable shoe tree equipped with a UV germicidal light source and electronic safeguards that prevent appreciable leakage of UV radiation outside the shoe.

A display includes a first substrate, a second substrate, a plurality of pixels and a photo-catalyst layer. The plurality of pixels are disposed between the first substrate and the second substrate. The photo-catalyst layer is disposed above a surface of the second substrate facing the first substrate or above a surface of the first substrate facing the second substrate. Manufacturing methods of a display are additionally disclosed.

A complex or composition of a photosensitizer associated with an inclusion complex former for use in forming active surfaces and active materials to kill or render inactive pathogens. A composition having photosensitizer associated with an inclusion complex former, a nanoparticle and liquid. Treating a material, such as a fabric, fiber, product, surface, woven, and non-woven with a photosensitizer and nanoparticle whereby treated material is an active surface that kills or renders inactive pathogens upon illumination with sufficient light.

Systems, apparatus, methods, and articles of manufacture provide for cleaning a mobile device and other types of portable user devices. In one embodiment, a controller of a mobile device cleaning system may control a sterilization device for cleaning a mobile device (e.g., a phone). In one embodiment, one or more display devices may provide information to observers during a cleaning process.