Abstract: A lid for a container for storing a smokeless tobacco product includes a laterally-extending wall having opposing first and second surfaces and defining a periphery. The wall has a central axis extending perpendicularly to the first and second surfaces. A sidewall extends from the second surface substantially parallel to the central axis and about the periphery of the wall, with the wall and the sidewall being formed of a polymeric material. The lid also includes a metallic cladding engaged with the wall so as to extend laterally across the first surface.

Abstract: A sensor for detecting of an analyte in a solution phase comprises a plurality of functionalised silver nanoplates wherein a functionalising agent is directly bonded to the surfaces of the nanoplates. The nanoplates provide a detectable wavelength shift change in their local surface plasmon resonance spectrum in response to the binding of an analyte. Two or more of the nanoplates may be electromagnetically coupled.

Abstract: A sensor comprises silver nanoparticles in which substantially all of the surfaces of the silver nanoparticles are available for interaction with an analyte or for functionalisation with a receptor which is capable of interacting with an analyte. Silver nanoparticles are preparated by forming the nanoparticles in the presence of a polymeric stabiliser such as PVA.