A method of applying a trivalent chromium or chromium-free conversion coating to a metallic substrate including mixing a dye compound that interacts with electromagnetic radiation outside the human visual spectrum but not electromagnetic radiation that is within the human visual spectrum to produce an observable emission into the trivalent chromium or chromium-free conversion coating mixture to allow for inspection of the coating after applied with a correlating electromagnetic radiation source.

A method of using an automated system to position a fabric piece. A pattern is printed onto a fabric piece with fluorescent ink, and detected with a fluorescence-detecting camera, such as a UV camera. The detected pattern is stored in a controller as a pattern signature and compared to a stored target pattern. The results of the comparing step are used to generate control signals for the automated system to move the piece into the position of the target pattern.

The invention relates to a pigment particle possessing at least one security feature, a method for obtaining the same, and a suspension comprised of the pigment particle. In addition, the invention refers to a method for marking a product with a pigment particle according to the invention and the use of a pigment particle for marking and verifying said pigment particle.

Organic, fluorescent taggants and compositions thereof which find use in the production, detection and authentication of tobacco products and components thereof. A process for authentication of a tobacco product is also disclosed, the process including the steps of marking the tobacco product with a taggant composition comprising an organic, fluorescent taggant and a carrier for the taggant; irradiating the tobacco product with invisible radiation; and detecting fluorescence from the taggant. Adhesive and ink compositions are also disclosed.

The present disclosure is drawn to a method and system for the excitation, identification, and authentication of light emitting materials using a mobile device comprising at least one Vertical Cavity Surface Emitting Laser (VCSEL), for use in a variety of applications.

A smoking detector having a body with a substrate which has a smoking particle capturing surface area positioned upon it. The particle capturing surface area is configured to attract and adhere to airborne smoking particles released in smoke emitted from burning tobacco or marijuana or a Vape device. Smoking particles captured within the particle capturing surface area will luminesce when exposed to UV light providing physical proof that smoking occurred in the room or vehicle where the detector was placed during a defined time period.

The present invention discloses a diagnostic device or kit for visual detection of bilirubin. Said diagnostic device or kit comprises chitosan stabilized gold nanoclusters based luminescence source, Cu.sup.2+ ions source for quenching luminescence intensity of said gold nanoclusters and recovery of quenched luminescence intensity in the presence of bilirubin. The said device enables non-invasive detection of hyper-bilirubinemia by thumb impression visually or from blood serum.

An illuminator comprising more than one set of ultraviolet radiation sources. A first set of ultraviolet radiation sources operate in a wavelength range of approximately 270 nanometers to approximately 290 nanometers. A second set of ultraviolet radiation sources operate in a wavelength range of approximately 380 nanometers to approximately 420 nanometers. The illuminator can also include a set of sensors for acquiring data regarding at least one object to be irradiated by the first and the second set of ultraviolet radiation sources. A control system configured to control and adjust a set of radiation settings for the first and the second set of ultraviolet radiation sources based on the data acquired by the set of sensors.

Provided in the present invention is a reference cassette for a fluorescence immunoassay diagnostic device, the cassette having, arranged in a case, fluorescent glass capable of maintaining fluorescence characteristics to be constant without causing degeneration, so as to accurately provide reference measurement information about the fluorescence detection amount during testing of the measurement accuracy of the fluorescence detection of the immunoassay diagnostic device, so that testing accuracy can improve, preventing decrease in measurement accuracy and being semi-permanently usable since the denaturation or deterioration of the fluorescent glass does not occur even if the cassette is used continuously, and providing a mask having a slit so as to limit the area of the fluorescent glass to be externally exposed to a specific area, thereby generating the type of fluorescence that is the same as that of a reaction area of a sample strip to be actually used, and thus more accurate reference measurement information can be provided.

A method of applying a trivalent chromium or chromium-free conversion coating to a metallic substrate including mixing a dye compound that interacts with electromagnetic radiation outside the human visual spectrum but not electromagnetic radiation that is within the human visual spectrum to produce an observable emission into the trivalent chromium or chromium-free conversion coating mixture to allow for inspection of the coating after applied with a correlating electromagnetic radiation source.