Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Study of the Dependency of the Specific Power Absorption Rate on Several Characteristics of the Excitation Magnetic Signal when Irradiating a SPION-containing Ferrofluid
Year:2016
Research Areas
  • Bioinstrumentation,
  • Interaction between electromagnetic fields and biologic weaves
Information
Abstract
Magnetic hyperthermia mediated by superparamagnetic particles is mainly based in sinusoidal waveforms as excitation signals. Temperature changes are conventionally explained by rotation of the particles in the surrounding medium. This is a hypothesis quite questionable since habitual experimental setups only produce changes in the magnetic module, not in the field lines trajectories. Theoretical results were tested by changing the waveform of the exciting signal in order to compare non-sinusoidal signals against sinusoidal signals. Experiments were done at different frequencies: 200 KHz, 400 KHz, 600 KHz, 800 KHz and 1 MHz. Superparamagnetic Iron Oxide samples (SPION), made of magnetite (Fe3O4) and suspended in water (100 mg/ml), were used. Magnetic field strength varies from 0.1 ± 0.015 KA/m to 0.6 ± 0.015 KA/m. In this study was observed that the power loss depends on the applied frequency: for 1 to 2.5 RMS current the responses for each signal are part of the higher section of the exponential function, and for 3.5 to 8 RMS current the response is clearly the decrement exponential function?s tale (under 1 × 103 LER/gr).
International
No
JCR
No
Title
Journal of Magnetics
ISBN
1226-1750
Impact factor JCR
0,42
Impact info
Volume
21
Journal number
From page
460
To page
467
Month
SIN MES
Ranking
Participants
  • Autor: Alejandra Mina Rosales (UPM)
  • Autor: Elena Aznar (Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM).)
  • Autor: Carmen Coll (Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM).)
  • Autor: Ruben Antonio García Mendoza (UPM)
  • Autor: Ana Lorena Urbano Bojorge (UPM)
  • Autor: Nazario Félix González (UPM)
  • Autor: Ramón Martínez-Máñez (Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM).)
  • Autor: Francisco del Pozo Guerrero (UPM)
  • Autor: Jose Javier Serrano Olmedo (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnologías para Ciencias de la Salud
  • Departamento: Tecnología Fotónica y Bioingeniería
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)