Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.2829797
Title: Optical manipulation of paramagnetic particles with on-chip detection using spin valve sensors
Authors: Lui, L.W.Y.
Li, K.B.
O'Shea, S.J.
Sow, C.H. 
Issue Date: 2008
Citation: Lui, L.W.Y., Li, K.B., O'Shea, S.J., Sow, C.H. (2008). Optical manipulation of paramagnetic particles with on-chip detection using spin valve sensors. Applied Physics Letters 92 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2829797
Abstract: In this work, we present a combinatory approach where optical tweezers were used to trap and position a single superparamagnetic particle over a spin valve sensor, with the particle then detected by the sensor. This approach is demonstrated using superparamagnetic particles of 2 μm together with a spin valve sensor with dimensions of 2×4 μ m2, whereby a single magnetic particle was positioned over the sensor and a corresponding drop in the voltage across the sensor was detected. The results are explained using a simple model where the particle is treated as a pure magnetic dipole. © 2008 American Institute of Physics.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/97444
ISSN: 00036951
DOI: 10.1063/1.2829797
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