US 11,748,583 B2
Nanowire characterization and identification
Rhonda R. Franklin, Falcon Heights, MN (US); Wen Zhou, Minneapolis, MN (US); Jaime F. Modiano, Minneapolis, MN (US); and Bethanie J Stadler, Shoreview, MN (US)
Assigned to Regents of the University of Minnesota, Minneapolis, MN (US)
Filed by Regents of the University of Minnesota, Minneapolis, MN (US)
Filed on Jun. 30, 2022, as Appl. No. 17/810,155.
Application 17/810,155 is a continuation of application No. 16/151,206, filed on Oct. 3, 2018, granted, now 11,379,677.
Claims priority of provisional application 62/567,606, filed on Oct. 3, 2017.
Prior Publication US 2023/0026610 A1, Jan. 26, 2023
Int. Cl. G01R 33/00 (2006.01); G06K 19/06 (2006.01); G06K 7/10 (2006.01); G01N 33/58 (2006.01); H01Q 1/14 (2006.01); H01Q 1/38 (2006.01); H01Q 15/00 (2006.01); H01Q 19/00 (2006.01); A61B 5/00 (2006.01); G01R 33/04 (2006.01)
CPC G06K 7/10366 (2013.01) [A61B 5/6852 (2013.01); G01N 33/587 (2013.01); G01R 33/0011 (2013.01); G01R 33/04 (2013.01); G06K 19/06187 (2013.01); H01Q 1/14 (2013.01); H01Q 1/38 (2013.01); H01Q 15/006 (2013.01); H01Q 19/005 (2013.01); A61B 2562/0223 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
applying a magnetic field to an identification tag comprising a plurality of magnetic nanowires (MNWs);
directing a first radio frequency signal to the identification tag comprising the plurality of MNWs while the identification tag is subject to the magnetic field;
detecting absorption of a radio frequency resulting from the first radio frequency signal passing by the plurality of MNWs of the identification tag;
determining, based on the radio frequency absorption, a ferromagnetic resonance (FMR) characteristic of the plurality of MNWs of the identification tag; and
identifying, based on the FMR characteristic, a presence of the plurality of MNWs of the identification tag.