Inkjet-Printed Carbon Nanotubes for Fabricating a Spoof Fingerprint on Paper

조회수 : 51 등록일 : 2019.07.01 00:00

저자 : Soum, V (Soum, Veasna); Shin, K (Shin, Kwanwoo)
출판일 : 2019.05.01

Inkjet-Printed Carbon Nanotubes for Fabricating a Spoof Fingerprint on Paper

Soum, V (Soum, Veasna)1 ] Park, S (Park, Sooyoung)1 ] Brilian, AI (Brilian, Albertus Ivan)1 ] Kim, Y (Kim, Yunpyo)1 ] Ryu, MY (Ryu, Madeline Y.)2 ] Brazell, T (Brazell, Taler)2 ] Burpo, FJ (Burpo, F. John)2 ] Parker, KK (Parker, Kevin Kit)2,3 ] Kwon, OS (Kwon, Oh-Sun)1 ] Shin, K (Shin, Kwanwoo)1 ]

[ 1 ] Sogang Univ, Inst Biol Interfaces, Dept Chem, Seoul 04107, South Korea
[ 2 ] US Mil Acad, Dept Chem & Life Sci, West Point, NY 10996 USA
[ 3 ] Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

A spoof fingerprint was fabricated on paper and applied for a spoofing attack to unlock a smartphone on which a capacitive array of sensors had been embedded with a fingerprint recognition algorithm. Using an inkjet printer with an ink made of carbon nanotubes (CNTs), we printed a spoof fingerprint having an electrical and geometric pattern of ridges and furrows comparable to that of the real fingerprint. With this printed spoof fingerprint, we were able to unlock a smartphone successfully; this was due to the good quality of the printed CNT material, which provided electrical conductivities and structural patterns similar to those of the real fingerprint. This result confirms that inkjet-printing CNTs to fabricate a spoof fingerprint on paper is an easy, simple spoofing route from the real fingerprint and suggests a new method for outputting the physical ridges and furrows on a two-dimensional plane.

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