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US 11,442,013 B2Granted
Sensor membrane, sensor cap and/or optical sensor and method for manufacturing a sensor membrane
AssigneeEndress+Hauser Conducta GmbH+Co. KG
InventorAndreas Löbbert
Life of this patent
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Abstract
A sensor membrane for an optical sensor, wherein the outer layer in contact with the medium and/or a layer adjacent thereto has a graft copolymer to form an omniphobic surface in contact with the medium, as well as a sensor cap and/or an optical sensor and a method for manufacturing the sensor membrane.
Claims22
A sensor membrane for an optical sensor, comprising:
- an outer layer embodied to contact a liquid medium,
- wherein the outer layer includes a graft polymer or a graft copolymer forming an omniphobic surface in contact with the liquid medium, and
- wherein the outer layer further includes microstructure-forming particles and a nanostructure grafted onto the microstructure-forming particles.
A sensor cap of an optical sensor, comprising:
- a sensor membrane, including
- an outer layer embodied to contact a liquid medium, wherein the outer layer includes a graft polymer or a graft copolymer forming an omniphobic surface in contact with the liquid medium and wherein the outer layer further includes microstructure-forming particles and a nanostructure grafted onto the microstructure-forming particles;
- and
- a layer with a graft copolymer beyond the sensor membrane.
1 more element
A method for manufacturing a sensor membrane, comprising:
- providing an arrangement of a plurality of functional layers of a sensor membrane, wherein an outer layer in contact with the medium and/or a layer of the sensor membrane adjacent thereto has a surface with microstructure-forming particles embedded in a matrix material of the respective layer;
- and
- grafting a compound onto the microstructure-forming particles and/or onto a reactive matrix material covering the microstructure-forming particles by graft polymerization or graft copolymerization, thus forming a nanostructure by forming side chains.
Dependencies are inferred from the claim text.