The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2014
Filed:
Aug. 05, 2010
Thomas Schalkhammer, Kasten bei Böheimkirchen, AT;
Thomas Schalkhammer, Kasten bei Böheimkirchen, AT;
Other;
Abstract
The invention relates to a sensor having a color-changeable sensory surface, characterized in that at least one molecular layer of a positively charged polymer () is bonded to a further molecular layer of a negatively charged polymer () in alternation by means of ionic forces, wherein a solvent is stored in the charged polymer layers (), whereby the polymer layers swell at least 10%, and colored, preferably metal or semiconducting nanoparticles () are bonded to the last charged polymer molecular layer, and the total layer thickness of the inert intermediate layer () and all polymer layers () is at least 40 nm but less than 500 nm so that the layer setup has an interference color that is visible to the human eye or measurable in the infrared and that can be changed by means of interaction with an analyte, the interference color being caused by optical interference between the material surface () and the layer of the nanoparticles ().