摘要:
An authenticatable article can comprise a polymer layer comprising a first taggant, and a second taggant disposed adjacent to the first taggant. The relative relationship of the first taggant and the second taggant can be such that at least one of the first taggant and the second taggant can cause an alteration in an emission from the other of the first taggant and the second taggant. One method of authenticating an article comprises illuminating an article and determining if an altered emission is within a selected emission range. The article comprises a polymer layer and a coating disposed on a side of the polymer layer. The polymer layer comprises a first taggant, and the coating causes a predetermined alteration in an emission from the taggant to form the altered emission.
摘要:
A polymer comprising a tagging material is provided wherein the tagging material comprises at least one organic fluorophore dye, or at least one inorganic fluorophore, or at least one organometallic fluorophore, or at least one semi-conducting luminescent nanoparticle, or combination thereof, wherein the tagging material has a temperature stability of at least about 350° C. and is present in a sufficient quantity such that the tagging material is detectible via a spectrofluorometer at an excitation wavelength in a range between about 100 nanometers and about 1100 nanometers. Further embodiments of the present invention include a method for identifying a polymer and an article comprising a polymer wherein the polymer contains the aforementioned tagging material.
摘要:
One method of authenticating an article comprises illuminating an article and determining if an altered emission is within a selected emission range. The article comprises a polymer layer and a coating disposed on a side of the polymer layer. The polymer layer comprises a first taggant, and the coating causes a predetermined alteration in an emission from the taggant to form the altered emission.
摘要:
Disclosed is a method for authenticating that an article is an authenticatable article. The method uses an optical tester, the optical tester comprising an electromagnetic radiation source and a detector. The authenticatable article comprises a heat responsive compound having a temperature dependent optical interaction with the electromagnetic radiation source in the presence of a heat stimulus to produce a heat induced electromagnetic radiation signature. The method comprises placing a test portion of the article in interaction with the electromagnetic radiation source of the optical tester, creating a heated portion by exposing the test portion of the article to a heat stimulus sufficient to raise the temperature of the test portion from a temperature T1 to a temperature T2, measuring the heat induced electromagnetic radiation signature of the heated portion with the detector, and authenticating that the article is an authenticatable article if the heat induced electromagnetic radiation signature is present.
摘要翻译:公开了一种用于认证物品是可认证物品的方法。 该方法使用光学测试仪,光学测试仪包括电磁辐射源和检测器。 可认证的制品包括在热刺激的存在下具有与电磁辐射源的温度依赖性光学相互作用以产生热诱导的电磁辐射特征的热响应化合物。 该方法包括将制品的测试部分与光学测试仪的电磁辐射源相互作用,通过将制品的测试部分暴露于足以使测试部分的温度从温度升高的热刺激而产生加热部分 T 1到温度T 2,用检测器测量加热部分的热感应电磁辐射特征,并且如果存在热感应电磁辐射特征则认证该物品是可认证物品。
摘要:
Disclosed is a method of authenticating that a test polymer is an authenticatable polymer, wherein the authenticatable polymer has an authentication signal and comprises a substrate polymer and an optically variable tag, the optically variable tag having a fluorescence emission whose wavelength or intensity change over time, the method comprising subjecting the test polymer to a stimulus sufficient to cause fluorescence of the optically variable tag, determining a test signal from the fluorescence of the test polymer, and authenticating that the test polymer is an authenticatable polymer if the test signal is the same as the authentication signal of the authenticatable polymer.
摘要:
The packaged medical article can comprise the medical article and a protective layer capable of inhibiting exposure of the medical article to a color change activator prior to use of the medical article. The medical article comprises a plastic portion and an active color changing specie, wherein the color changing specie is capable of changing color after exposure to a color change activator. The method for producing a medical article can comprise: combining thermoplastic resin with a blocked color changing specie to form a resin mixture and manufacture processing the resin mixture to form a packaged medical article. This manufacturing processing comprises forming the resin mixture into the medical article and packaging the medical article to form a packaged medical article. The color changing specie will not affect the structural integrity of the medical article when it changes color.
摘要:
An optical article for being transformed from a pre-activated state of functionality to an activated state of functionality is provided. The optical article includes a convertible element disposed in or proximate to the optical article and being responsive to an external stimulus. The convertible element for irreversibly altering the optical article from the pre-activated state of functionality to the activated state of functionality upon interaction with the external stimulus.
摘要:
An authentication system may comprise: a first light source, a second light source, and at least three optically filtered light sensing devices. The first light source can have a first light source spectral distribution and can be capable of providing sufficient excitation to produce a photoluminescent emission from a medium comprising a luminescent tag and a color. The second light source can have a visible multi-wavelength spectral distribution and can be capable of providing sufficient visible multi-wavelength illumination of the medium to generate a second analog response. Each light sensing device can have a different device spectral sensitivity range.
摘要:
In one embodiment, a method for authenticating that a test polymer is an authenticatable polymer is disclosed wherein the authenticatable polymer comprises a substrate polymer and a thermochromic compound, the thermochromic compound having a first signal at a first temperature and at an authenticating wavelength, and a second signal at an authenticating temperature and the authenticating wavelength, the first and second signals being different, and the authenticating temperature being greater than the first temperature, the method comprising subjecting the test polymer to a stimulus sufficient to raise a portion of the test polymer to the authenticating temperature to create a heated portion, determining a test signal of the heated portion of the test polymer at the authenticating wavelength, and authenticating that the test polymer is an authenticatable polymer if the test signal is the same as an authenticating signal of the authenticatable polymer.
摘要:
Disclosed herein are randomly marked plastic materials and articles, and methods for their fabrication. In one embodiment, a randomly marked article can comprise: a random distribution of markings within a substrate, and machine readable data and/or a data layer capable of comprising machine readable data. The substrate was formed a first plastic and a second plastic, wherein the first plastic and the second plastic comprise a sufficient difference in a property to cause the random distribution. In one embodiment, a method for fabricating an article, comprises: combining a taggant with a first plastic to form a tagged plastic; molding the article from the tagged plastic and a second plastic, wherein the article comprises a random distribution of the taggant; and mapping taggant in the article to form a map.