Abstracts Book - IMRC 2018

• SWS-O005
MAGNETIC NANOWIRES AS PROBES FOR TACTICAL DETECTION
Alejandro Jose Gimenez 1 , Eduardo Peña Cabrera 2 , Gabriel Luna Bárcenas 1
1 Instituto Politécnico Nacional - IPN, Centro de Investigación y Estudios Avanzados, Mexico.
2 Universidad de Guanajuato, Departamento de Química, Mexico.
A procedure is proposed to detect magnetic nanowires at extremely low
concentration, this procedure is based in measuring the light scattering intensity
changes of liquid suspended nanowires while they are magnetically aligned
using magnetic fields. It has been demonstrated that the light scattered from a
laser beam increments significantly when the nanowires are perpendicular to
the laser beam, at the other hand, the light scattering is minimum when
nanowires are parallel to the laser beam. Research performed within our
research group has improved this detection method until reaching a state-of-art
sensitivity level down to 140 pg/ml. From the high performance and simplicity
of the proposed detection method, it can be inferred a high potential of
magnetic nanowires to be implemented as probes for recognition of agents of
interest in defense applications, for instance using proper functionalization with
molecules having selective bonding capabilities, it could be achieved the
detection of toxins, viruses, pathological bacteria, DNA, etc.
Keywords: nanowires, bio-sensors, magnetic nanoparticles
Presenting authors email: algimenez@hotmail.com