Wheatstone bridge configuration for evaluation of plasmonic energy transfer

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Date
2016-04-14
Authors
Gosciniak, J.
Mooney, M.
Gubbins, M.
Corbett, Brian M.
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Nature Publishing Group
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Abstract
We propose an internal (on-chip) Wheatstone bridge configuration to evaluate the efficiency of near-field transducers (NFT) as used in heat-assisted magnetic recording (HAMR). The electric field enhancement between the transducer and the image plane is monitored by measuring the resistance of metal electrodes composing the image plane. The absorption of the enhanced electric field causes an increase in the metal temperature, and thereby, in its resistance whose variation is monitored with an internal Wheatstone bridge which is accurately balanced in the absence of the electric field.
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Keywords
Magnetic devices , Nanoparticles , Nanophotonics and plasmonics , Optical data storage
Citation
Gosciniak, J., Mooney, M., Gubbins, M. and Corbett, B. (2016) 'Wheatstone bridge configuration for evaluation of plasmonic energy transfer', Scientific Reports, 6, 24423 (7pp). doi: