US Patent 7472601 - Piezoresistive nanowire sensor

http://www.freepatentsonline.com/7472601.html

This patent from Radi Medical Systems teaches a higher sensitivity blood pressure and temperature sensor based on silicon nanowires. Claim 1 reads:

1. A sensor for intravascular measurement within a living body, comprising:

a guide wire, a sensor element, which is arranged at a distal portion of the guide wire, wherein the sensor element comprises at least one piezoresistive nanowire.