75409 20190709135643.0 doi 10.1021/acsphotonics.7b00654 sideral 104257 ART-2017-104257 eng Chen, S. Acoustic Graphene Plasmon Nanoresonators for Field-Enhanced Infrared Molecular Spectroscopy 2017 Access copy available to the general public Unrestricted Field-Enhanced infrared molecular spectroscopy has been widely applied in chemical analysis, environmental monitoring, and food and drug safety. The sensitivity of molecular spectroscopy critically depends on the electromagnetic field confinement and enhancement in the sensing elements. Here we propose a concept for sensing that consists of a graphene plasmonic nanoresonator separated from a metallic film by a nanometric spacer. Such a resonator can support acoustic graphene plasmons (AGPs) that provide ultraconfined electromagnetic fields and strong field enhancement. Compared with conventional plasmons in graphene, AGPs exhibit a much higher spontaneous emission rate (reaching values up to 1 × 108), higher sensitivity to the dielectric permittivity inside the AGP nanoresonator (the figure of merit is higher by a factor of 7), and a remarkable ability to enhance molecular vibrational fingerprints of nanoscale analyte samples. Our work opens novel avenues for sensing of ultrasmall volumes of molecules as well as for studying enhanced light-matter interactions, e.g., strong coupling applications. info:eu-repo/grantAgreement/ES/MINECO/MAT2015-65525-R info:eu-repo/grantAgreement/ES/MINECO/MAT2014-53432-C5-4-R This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 696656-GrapheneCore1 info:eu-repo/grantAgreement/EC/H2020/696656/EU/Graphene-based disruptive technologies/GrapheneCore1 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 6.88 2017 MATERIALS SCIENCE, MULTIDISCIPLINARY 35 / 285 = 0.123 2017 Q1 T1 OPTICS 7 / 94 = 0.074 2017 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 19 / 92 = 0.207 2017 Q1 T1 PHYSICS, CONDENSED MATTER 13 / 67 = 0.194 2017 Q1 T1 PHYSICS, APPLIED 16 / 146 = 0.11 2017 Q1 T1 3.376 2017 Atomic and Molecular Physics, and Optics 2017 Q1 Electronic, Optical and Magnetic Materials 2017 Q1 Electrical and Electronic Engineering 2017 Q1 Biotechnology 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Autore, M. Li, J. Li, P. Alonso-Gonzalez, P. Yang, Z. (orcid)0000-0001-9273-8165 Martin-Moreno, L. Universidad de Zaragoza Hillenbrand, R. Nikitin, A.Y. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 4, 12 (2017), 3089-3097 ACS photonics ACS photonics 2330-4022 699370 http://zaguan.unizar.es/record/75409/files/texto_completo.pdf Postprint 90377 http://zaguan.unizar.es/record/75409/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:75409 articulos driver 2019-07-09-12:39:35 ARTICLE