Spin valve sensors for ultrasensitive detection of superparamagnetic nanoparticles for biological applications

• Published in: Sensors and actuators. A. Physical. Vol. 126; no. 1; pp. 98 - 106
• Main Authors: Li, Guanxiong, Sun, Shouheng, Wilson, Robert J., White, Robert L., Pourmand, Nader, Wang, Shan X.
• Format: Journal Article
• Language: English
• Published: Switzerland Elsevier B.V 01.01.2006
• Subjects: Actuators; Biodetection; Biosensor; Giant magnetoresistance; GMR; Labels; Lithography; Magnetic nanoparticle; Nanoparticles; Self assembly; Sensors; Spin valve sensor; Spin valves; Magnetic nanoparticle; Biodetection; GMR; Biosensor; Spin valve sensor

We present giant magnetoresistance (GMR) spin valve sensors designed for detection of superparamagnetic nanoparticles as potential biomolecular labels in magnetic biodetection technology. We discuss the sensor design and experimentally demonstrate that as few as ∼23 monodisperse 16-nm superparamagne...