2.2k citations · 3.2k across the 7 of their papers we have counts for
7 papers
Cosmic Ray Induced Mass-Independent Oxygen Isotope Exchange: A Novel Mechanism for Producing O depletions in the Early Solar System
G. Dominguez, J. Lucas, L. Tafla +2
A fundamental puzzle of our solar system's formation is understanding why the terrestrial bodies including the planets,comets,and asteroids are depleted in O compared to the…
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…
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…