Corresponding Author * Joshua B. Edel Address - Department of Chemistry, Imperial College London, South – Kensington Campus, London, SW7 2AZ, United Kingdom. Email - joshua.edel@imperial.ac.uk * Stefan A. Maier - Address - Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom. Email - s.maier@imperial.ac.uk Author Contributions These authors contributed equally. ⊥ ACKNOWLEDGMENT This work was supported in part by an ERC starting investigator (J.B.E.). S.A.M. acknowledges support from the EPSRC and the Leverhulme Trust. REFERENCES 1. Anker, J. N.; Hall, W. P.; Lyandres, O.; Shah, N. C.; Zhao, J.; Van Duyne, R. P. Nat. 2008, 7, (6), 442-453. Mater. 2. Fan, X.; White, I. M.; Shopova, S. I.; Zhu, H.; Suter, J. D.; Sun, Y. Anal. Chim. Acta 2008, 620, (1–2), 8-26. 3. Howorka, S.; Siwy, Z. 2009, 38, (8), 2360-2384. Chem. Soc. Rev. 4. Miles, B. N.; Ivanov, A. P.; Wilson, K. A.; Dogan, F.; Japrung, D.; Edel, J. B. Chem. Soc. 42, (1), 15-28. 2013, Rev.
Corresponding Author * Joshua B. Edel – Address - Department of Chemistry, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom. Email - joshua.edel@imperial.ac.uk * Stefan A. Maier - Address - Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom. Email - s.maier@imperial.ac.uk Author Contributions ⊥ These authors contributed equally. ACKNOWLEDGMENT This work was supported in part by an ERC starting investigator (J.B.E.). S.A.M. acknowledges support from the EPSRC and the Leverhulme Trust. REFERENCES 1. Anker, J. N.; Hall, W. P.; Lyandres, O.; Shah, N. C.; Zhao, J.; Van Duyne, R. P. Nat. Mater. 2008, 7, (6), 442-453. 2. Fan, X.; White, I. M.; Shopova, S. I.; Zhu, H.; Suter, J. D.; Sun, Y. Anal. Chim. Acta 2008, 620, (1–2), 8-26. 3. Howorka, S.; Siwy, Z. Chem. Soc. Rev. 2009, 38, (8), 2360-2384. 4. Miles, B. N.; Ivanov, A. P.; Wilson, K. A.; Dogan, F.; Japrung, D.; Edel, J. B. Chem. Soc. Rev. 2013, 42, (1), 15-28.
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