SPR sensor device with nanostructure

US9395363B2 · kind B2 · utility

Assignees

• THE EUROPEAN UNION, REPRESENTED BY THE EUROPEAN COMMISSION · BE
• PLASMORE SRL · IT

Inventors

• Andrea Valsesia · Borgomanero, IT
• Franco Marabelli · Pavia, IT
• Silvia Giudicatti · Tirano, IT
• Gerardo Marchesini · Laveno, IT
• François Rossi · Varese, IT
• Pascal Colpo · Borgomanero, IT

Key dates

• Filing date: May 31, 2012
• Grant date: Jul 19, 2016
• Expiry date: May 31, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/554
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A sensor device comprises a dielectric substrate (52); and a metal layer (53) on the substrate (52) with at least one array of cavities (54) therein and adapted to support L-SPR, each of the cavities (54) in the metal layer (53) having an opening (56) and a closed bottom (58) and widening from opening to bottom. A bed of dielectric material (62) is provided over the bottom (58) of each cavity (54) to reduce its apparent depth, the bed surface (62) being functionalized to bind to receptor moieties (64). This sensor device is particularly designed for SPR detection, but can be used in other detection techniques.