Patent ID: 9074983
Filing Date: 2015-07-07
Classification: B81B,B81C,G01N

Abstract:
1. A method for the design and deposition of organic sensing layers for surface acoustic wave chemical sensors, comprising: designing and synthesizing an organic sensing film based on a plurality of chemical routes, wherein one chemical route is selected from said plurality of chemical routes using a dynamic molecular recognition principle; synthesizing said organic sensing film based on at least one polymeric calixarenes non-covalently bonded to said piezoelectric substrate; preparing a homogeneous liquid phase of said at least one polymeric calixarenes by means of a polymerization or copolymerization of a monomer with at least one α,ω-dithiol wherein said monomer comprises 25,26,27,28-tetra10-undecenoxy calix[4]arene obtained by reacting p-tertbutylcalix[4]arene with a 10-undecenoyl chloride; depositing said designed and synthesized organic sensing film over a dielectric wave guiding layer on a plurality of electrodes pre-formed on a piezoelectric substrate forming a gelly organic sensing film; and consolidating said gelly organic sensing film utilizing at least one thermal treatment solution comprising a local laser treatment applied to avoid cracking said gelly organic sensing film, to form said organic sensing film, thereby forming a gas sensor for the detection of a plurality of gases utilizing a change in mass load and visco-elastic properties of said organic sensing film.