Abstract: A colorimetric sensor for detecting an analyte of interest in a fluid sample includes a lamellar photonic material having alternating layers of a first polymer layer and a second polymer layer. Each first polymer layer can be a molecularly imprinted polymer defining a cavity shaped to receive an analyte of interest. The photonic material is configured such that, when an analyte contacts the photonic material and becomes disposed within a cavity of the molecularly imprinted polymer, a refractive property of the photonic material changes, causing a detectable color change in the sensor.

Abstract: A colorimetric sensor for detecting an analyte of interest that includes multiple surfaces and a molecularly imprinted polymer defining a cavity shaped to receive an analyte of interest. Each surface defines a void (e.g., a pore or a nanohole) and at least one surface defines a fluid inlet. The sensor is configured such that, when an analyte contacts the molecularly imprinted polymer and becomes disposed within the cavity, a wettability of at least one of the surfaces changes thereby to cause a detectable color change in the sensor. Optionally, the sensor may also include a metal layer at a bottom of each void or nanohole and outside a top of each void or nanohole for use as a plasmon resonance-type sensor.

Abstract: A colorimetric sensor for detecting an analyte of interest in a fluid sample includes a lamellar photonic material having alternating layers of a first polymer layer and a second polymer layer. Each first polymer layer can be a molecularly imprinted polymer defining a cavity shaped to receive an analyte of interest. The photonic material is configured such that, when an analyte contacts the photonic material and becomes disposed within a cavity of the molecularly imprinted polymer, a refractive property of the photonic material changes, causing a detectable color change in the sensor.

Abstract: A colorimetric sensor for detecting an analyte of interest in a fluid sample includes a lamellar photonic material having alternating layers of a first polymer layer and a second polymer layer. Each first polymer layer can be a molecularly imprinted polymer defining a cavity shaped to receive an analyte of interest. The photonic material is configured such that, when an analyte contacts the photonic material and becomes disposed within a cavity of the molecularly imprinted polymer, a refractive property of the photonic material changes, causing a detectable color change in the sensor.

Abstract: A colorimetric sensor for detecting an analyte of interest that includes a metal layer disposed upon a substrate, a plurality of nanostructures, and a corresponding plurality of metal deposits spaced apart from the metal layer. The metal layer defines a plurality of holes, each nanostructure includes a first portion disposed within a respective hole, and each metal deposit is disposed upon a second portion of a respective nanostructure. The sensor also includes a molecularly imprinted polymer layer that may cover the metal layer, the nanostructures, and/or the metal deposits. The molecularly imprinted polymer layer defines a cavity shaped to receive the analyte of interest, and the sensor is configured such that, when an analyte contacts the molecularly imprinted polymer layer and becomes disposed within the cavity, an optical property of at least a portion of the sensor changes thereby to cause a detectable color change in and/or from the sensor.

Abstract: An apparatus is configured to detect a beverage that is contaminated with a substance. The apparatus may include a testing material, wherein the testing material may comprise a cavity having a complementary shape to a molecule associated with the substance. The apparatus may include a taste substance filling the cavity, wherein the taste substance filling the cavity may bleed out into the beverage when the molecule associated with the substance in the beverage replaces the taste substance filling the cavity, wherein a taste of the beverage may change when the taste substance bleeds out into the beverage as an indicator that the substance is present in the beverage.

Abstract: A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.

Abstract: An apparatus may be configured to test a beverage, the apparatus may include but is not limited to, a food container, wherein the food container includes a material. An indicator may be combined with at least a portion of the material of the food container, wherein the indicator may be associated with a brand profile that may identify a brand of the food, wherein the indicator may visibly react when the indicator is contacted with the food to show whether the food is identified as the brand of the food, and wherein the visible reaction may be shown on at least the portion of the material of the food container via the indicator combined with at least the portion of the material of the food container.

Abstract: A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.

Abstract: An apparatus may be configured to test a beverage, the apparatus may include but is not limited to, a beverage container that may be configured to hold a beverage, wherein the beverage container may include a material. An indicator may be chemically bonded to at least a portion of the material of the beverage container, wherein at least the portion of the material of the beverage container may include the indicator, wherein the indicator may be associated with at least part of a brand profile to identify a brand of the beverage, wherein the indicator may visibly react when the indicator is contacted with the beverage to show whether the beverage may be identified as the brand of the beverage, and wherein the visible reaction may be shown on at least the portion of the material of the beverage container via the indicator chemically bonded to at least the portion of the material of the beverage container.

Abstract: A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.