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Analyte Probe And Determining Water Vapor Transmission Rate
Published Patent Application Number: WO 2023/097017 A1
Conventional industrial methods are limited to Water Vapor Transmission Rate (WVTR) ranges larger than 10-4 g/m2/24 h. The two most common research grade procedures, the Tritium Radioactive Technique and the Optical-Electrical Calcium Degradation Test are capable of measuring Moisture Vapor Transmission Rate (MVTR) to within 10-6 g/m2/24 h.
Invention
Our method is based on direct electronic interactions between graphene and water at the molecular level, thus is capable of measuring MVTR to within10-8 g/m2/24 h.
Commercial Application
Our method can be used to evaluate protective barrier materials directly for the most demanding applications, for example, for 2D nano-scale electronics, pharmaceuticals and other moisture sensitive materials. In addition, the method is very easy to use in a typical lab environment.
Competitive Advantage
Pharmaceuticals, Biomedicals, Food, and Electronics are moisture sensitive and require protective packaging materials with increasingly improved WVTR to achieve the required quality, safety, and shelf life.