Fingerprint recognition: Leti exceeds FBI requirements

The eight partners of the EU PiezoMAT project, coordinated by Leti, achieved resolutions twice as high as what the FBI requires for fingerprint recognition. The project resulted in a prototype fingerprint recognition sensor with 250 pixels 4 microns in diameter; each pixel is made up of a bunch of piezoelectric nanowires on silicon. When a finger is placed on the sensor, local deformation of the nanowire network generates an electric potential.
Leti fabricated the sensor in a cleanroom leveraging developments on the nanowire growth layer and the contact lines. The technology can achieve resolutions in excess of 1,000 dpi, distinguishing a fingerprint’s tiniest details like pores.

Contact: elise.saoutieff@cea.fr
Learn more: http://www.piezomat.eu/Home

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