11 research outputs found
Real-space mapping of tailored sheet and edge plasmons in graphene nanoresonators
Get PDFPlasmons in graphene nanoresonators have many potential applications in photonics and optoelectronics, including room-temperature infrared and terahertz photodetectors, sensors, reflect arrays or modulators1, 2, 3, 4, 5, 6, 7. The development of efficient devices will critically depend on precise knowledge and control of the plasmonic modes. Here, we use near-field microscopy8, 9, 10, 11 between λ0 = 10–12 μm to excite and image plasmons in tailored disk and rectangular graphene nanoresonators, and observe a rich variety of coexisting Fabry–Perot modes. Disentangling them by a theoretical analysis allows the identification of sheet and edge plasmons, the latter exhibiting mode volumes as small as 10−8λ03. By measuring the dispersion of the edge plasmons we corroborate their superior confinement compared with sheet plasmons, which among others could be applied for efficient 1D coupling of quantum emitters12. Our understanding of graphene plasmon images is a key to unprecedented in-depth analysis and verification of plasmonic functionalities in future flatland technologies.Peer ReviewedPostprint (author's final draft
Synthesis and Characterization of Some Nickel(II), Cobalt(II), and Zinc(II) Complexes with Schiff Bases Derived from the Reaction of Isonitroso-p-chloroacetophenone and 1,2-Diaminoethane with 1,4-Diaminobutane
No full textSpectrothermal studies of 1,10-phenanthroline complexes of Co(II), NI(II), Cu(II) and Cd(II) orotates
No full textSimple inorganic complexes but intricate hydrogen bonding networks: Synthesis and crystal structures of [MII(opda)2(NO3)2] (M = Zn and Cd; opda = orthophenylenediamine)
No full textMetal-Drug Interactions: Synthesis and Spectroscopic Characteristics, Surface Morphology, and Pharmacological Activity of Ephedrine–HCl Complexes with Mo(V), Nb(V), Ga(III), and Ge(IV)
No full textMolybdenum−Pterin Chemistry. 2. Reinvestigation of Molybdenum(IV) Coordination by Flavin Gives Evidence for Partial Pteridine Reduction
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Molybdenum−Pterin Chemistry. 3. Use of X-ray Photoelectron Spectroscopy To Assign Oxidation States in Metal Complexes of Noninnocent Ligands
No full textVapor Pressures, Molar Enthalpies of Sublimation, and Molar Enthalpies of Solution in Water of Selected Amino Derivatives of Uracil and 5-Nitrouracil
No full textClassical and Weak Hydrogen Bonding Interactions between 4,4′-Bipyridine and Organic Acids: From Co-Crystal to Organic Complex
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