Journal ArticleDOI
Graphene plasmon enhanced vibrational sensing of surface-adsorbed layers.
Yilei Li,Yilei Li,Hugen Yan,Damon B. Farmer,Xiang Meng,Wenjuan Zhu,Richard M. Osgood,Tony F. Heinz,Phaedon Avouris +8 more
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TLDR
It is shown that this plasmon-vibrational mode coupling and the resulting absorption enhancement can be understood in terms of near-field electromagnetic interactions.Abstract:
We characterize the influence of graphene nanoribbon plasmon excitation on the vibrational spectra of surface-absorbed polymers. As the detuning between the graphene plasmon frequency and a vibrational frequency of the polymer decreases, the vibrational peak intensity first increases and is then transformed into a region of narrow optical transparency as the frequencies overlap. Examples of this are provided by the carbonyl vibration in thin films of poly(methyl methacrylate) and polyvinylpyrrolidone. The signal depth of the plasmon-induced transparency is found to be 5 times larger than that of light attenuated by the carbonyl vibration alone. The plasmon-vibrational mode coupling and the resulting fields are analyzed using both a phenomenological model of electromagnetically coupled oscillators and finite-difference time-domain simulations. It is shown that this coupling and the resulting absorption enhancement can be understood in terms of near-field electromagnetic interactions.read more
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Mid-infrared plasmonic biosensing with graphene
Daniel Rodrigo,Odeta Limaj,Davide Janner,Dordaneh Etezadi,F. Javier García de Abajo,Valerio Pruneri,Hatice Altug +6 more
TL;DR: In this paper, the plasmon resonance of nanostructured graphene was dynamically tuned to selectively probe the protein at different frequencies and extract its complex refractive index, and the extreme spatial light confinement in graphene produced an unprecedented high overlap with nanometric biomolecules, enabling superior sensitivity in the detection of their refractive indices and vibrational fingerprints.
Journal ArticleDOI
Highly confined low-loss plasmons in graphene–boron nitride heterostructures
Achim Woessner,Mark B. Lundeberg,Yuanda Gao,Alessandro Principi,Pablo Alonso-González,Matteo Carrega,Kenji Watanabe,Takashi Taniguchi,Giovanni Vignale,Marco Polini,James Hone,Rainer Hillenbrand,Frank H. L. Koppens +12 more
TL;DR: In this paper, the dispersion and plasmon damping of propagating plasmons in high-quality graphene encapsulated between two films of hexagonal nanophoton nitride (h-BN).
Journal ArticleDOI
Highly confined low-loss plasmons in graphene-boron nitride heterostructures
Achim Woessner,Mark B. Lundeberg,Yuanda Gao,Alessandro Principi,Pablo Alonso-González,Matteo Carrega,Kenji Watanabe,Takashi Taniguchi,Giovanni Vignale,Marco Polini,James Hone,Rainer Hillenbrand,Frank H. L. Koppens +12 more
TL;DR: This Article exploits near-field microscopy to image propagating plasmons in high-quality graphene encapsulated between two films of hexagonal boron nitride (h-BN), and finds unprecedentedly low plasmon damping combined with strong field confinement and confirms the high uniformity of this plAsmonic medium.
Journal ArticleDOI
Surface-Enhanced Infrared Spectroscopy Using Resonant Nanoantennas.
TL;DR: First applications such as the detection of proteins, the monitoring of dynamic processes, and hyperspectral infrared chemical imaging are discussed, demonstrating the sensitivity and broad applicability of resonant SEIRA.
Journal ArticleDOI
Hybrid Surface-Phonon-Plasmon Polariton Modes in Graphene/Monolayer h-BN Heterostructures
Victor W. Brar,Min Seok Jang,Michelle C. Sherrott,Seyoon Kim,Josue J. Lopez,Laura Kim,Mansoo Choi,Harry A. Atwater +7 more
TL;DR: Infrared transmission measurements reveal the hybridization of graphene plasmons and the phonons in a monolayer hexagonal boron nitride (h-BN) sheet to create two clearly separated new surface-phonon-plasmon-polariton (SPPP) modes.
References
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The rise of graphene
TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
Journal ArticleDOI
Two-dimensional gas of massless Dirac fermions in graphene
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TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
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Experimental observation of the quantum Hall effect and Berry's phase in graphene
TL;DR: In this paper, an experimental investigation of magneto-transport in a high-mobility single layer of Graphene is presented, where an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene is observed.
Journal Article
Experimental Observation of Quantum Hall Effect and Berry's Phase in Graphene
TL;DR: An experimental investigation of magneto-transport in a high-mobility single layer of graphene observes an unusual half-integer quantum Hall effect for both electron and hole carriers in graphene.
Journal ArticleDOI
Surface plasmon resonance sensors: review
TL;DR: Main application areas are outlined and examples of applications of SPR sensor technology are presented and future prospects of SPR technology are discussed.