2.2k citations · 4.5k across the 12 of their papers we have counts for
12 papers
Relative efficiency of polariton emission in two-dimensional materials
Siyuan Dai, Qiong Ma, Yafang Yang +15
We investigated emission and propagation of polaritons in a two dimensional van der Waals material hexagonal boron nitride (hBN). Our specific emphasis in this work is on hyperboli…
Search for New Superconductors: An Electro-Magnetic Phase Transition in an Iron Meteorite Inclusion at 117 K
Stefan Guénon, Juan Gabriel Ramírez, Ali C. Basaran +3
The discovery of superconductivity in pnictides and iron chalcogenides inspires the search for new iron based superconducting phases. Iron-rich meteorites present a unique opportun…
Graphene-Based Platform for Infrared Near-Field Nanospectroscopy of Water and Biological Materials in an Aqueous Environment
Omar Khatib, Joshua D. Wood, Alexander S. McLeod +12
Scattering scanning near-field optical microscopy (s-SNOM) has emerged as a powerful nanoscale spectroscopic tool capable of characterizing individual biomacromolecules and molecul…
Tunneling Plasmonics in Bilayer Graphene
Z. Fei, E. G. Iwinski, G. X. Ni +14
We report experimental signatures of plasmonic effects due to electron tunneling between adjacent graphene layers. At sub-nanometer separation, such layers can form either a strong…
Graphene on hexagonal boron nitride as a tunable hyperbolic metamaterial
S. Dai, Q. Ma, M. K. Liu +13
Hexagonal boron nitride (h-BN) is a natural hyperbolic material, for which the dielectric constants are the same in the basal plane (epsilon^t = epsilon^x = epsilon^y) but have opp…
Ultrafast and Nanoscale Plasmonic Phenomena in Exfoliated Graphene Revealed by Infrared Pump-Probe Nanoscopy
Martin Wagner, Zhe Fei, Alexander S. McLeod +14
Pump-probe spectroscopy is central for exploring ultrafast dynamics of fundamental excitations, collective modes and energy transfer processes. Typically carried out using conventi…
Electronic and plasmonic phenomena at graphene grain boundaries
Z. Fei, A. S. Rodin, W. Gannett +13
Graphene, a two-dimensional honeycomb lattice of carbon atoms, is of great interest in (opto)electronics and plasmonics and can be obtained by means of diverse fabrication techniqu…
Model for quantitative tip-enhanced spectroscopy and the extraction of nanoscale-resolved optical constants
Alexander S. McLeod, Priscilla Kelly, M. D. Goldflam +6
Near-field infrared spectroscopy by elastic scattering of light from a probe tip resolves optical contrasts in materials at dramatically sub-wavelength scales across a broad energy…
Gate-tuning of graphene plasmons revealed by infrared nano-imaging
Z. Fei, A. S. Rodin, G. O. Andreev +12
Surface plasmons are collective oscillations of electrons in metals or semiconductors enabling confinement and control of electromagnetic energy at subwavelength scales. Rapid prog…
Infrared nanoscopy of Dirac plasmons at the graphene-SiO2 interface
Zhe Fei, Gregory O. Andreev, Wenzhong Bao +13
We report on infrared (IR) nanoscopy of 2D plasmon excitations of Dirac fermions in graphene. This is achieved by confining mid-IR radiation at the apex of a nanoscale tip: an appr…
Near-field spectroscopy of silicon dioxide thin films
Lingfeng M. Zhang, Gregory O. Andreev, Zhe Fei +6
We analyze the results of scanning near-field infrared spectroscopy performed on thin films of a-SiO2 on Si substrate. The measured near-field signal exhibits surface-phonon resona…
Observation of Selective Isotope Effect in the Ultraviolet excitation of N2: A Computational Study
B. H. Muskatel, F. Remacle, Mark. H. Thiemens +1
Isotope effects associated with gas phase N2 photolysis are used to interpret Martian atmospheric evolution, icy satellite atmospheric chemistry and meteorite isotopic anomalies fr…