Baldassarre, L., Sakat, E., Frigerio, J., Samarelli, A., Gallacher, K. , Calandrini, E., Isella, G., Paul, D. J. , Ortolani, M. and Biagioni, P. (2015) Midinfrared plasmon-enhanced spectroscopy with germanium antennas on silicon substrates. Nano Letters, 15(11), pp. 7225-7231. (doi: 10.1021/acs.nanolett.5b03247) (PMID:26457387)
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Abstract
Midinfrared plasmonic sensing allows the direct targeting of unique vibrational fingerprints of molecules. While gold has been used almost exclusively so far, recent research has focused on semiconductors with the potential to revolutionize plasmonic devices. We fabricate antennas out of heavily doped Ge films epitaxially grown on Si wafers and demonstrate up to 2 orders of magnitude signal enhancement for the molecules located in the antenna hot spots compared to those located on a bare silicon substrate. Our results set a new path toward integration of plasmonic sensors with the ubiquitous CMOS platform.
Item Type: | Articles (Letter) |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Paul, Professor Douglas and Gallacher, Dr Kevin |
Authors: | Baldassarre, L., Sakat, E., Frigerio, J., Samarelli, A., Gallacher, K., Calandrini, E., Isella, G., Paul, D. J., Ortolani, M., and Biagioni, P. |
Subjects: | Q Science > QC Physics |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Research Group: | Semiconductor Devices |
Journal Name: | Nano Letters |
Publisher: | American Chemical Society |
ISSN: | 1530-6984 |
ISSN (Online): | 1530-6992 |
Published Online: | 12 October 2015 |
Copyright Holders: | Copyright © 2015 American Chemical Society |
First Published: | First published in Nano Letters 15(11):7225-7231 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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