| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hess, Wayne P.
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Topics
Publications (16/16 displayed)
- 2013Photoemission Electron Microscopy of a Plasmonic Silver Nanoparticle Trimercitations
- 2013Silver nanorod arrays for photocathode applicationscitations
- 2013Plasmon-Induced Optical Field Enhancement studied by Correlated Scanning and Photoemission Electron Microscopycitations
- 2012Near-field focused photoemission from polystyrene microspheres studied with photoemission electron microscopycitations
- 2011Plasmonic enhancement of thin-film solar cells using gold-black coatingscitations
- 2011Plasmonic Field Enhancement of Individual Nanoparticles by Correlated Scanning and Photoemission Electron Microscopycitations
- 2010Effect of Surface Charge on Laser-induced Neutral Atom Desorptioncitations
- 2007An In Situ Study of the Martensitic Transformation in Shape Memory Alloys Using Photoemission Electron Microscopycitations
- 2007Study of Martensitic Phase transformation in a NiTiCu Thin Film Shape Memory Alloy Using Photoelectron Emission Microscopycitations
- 2007Real Time Study of Cu Diffusion Through a Ru Thin Film by Photoemission Electron Microscopy (PEEM)
- 2007Study of Copper Diffusion Through Ruthenium Thin Film by Photoemission Electron Microscopycitations
- 2007Photoemission Electron Microscopy of TiO2 Anatase Films Embedded with Rutile Nanocrystalscitations
- 2006In Situ Photoelectron Emission Microscopy of a Thermally Induced Martensitic Transformation in a CuZnAI Shape Memory Alloycitations
- 2006Laser-Induced Oxygen Vacancy Formation and Diffusion on TiO2(110) Surfaces Probed by Photoemission Electron Microscopycitations
- 2005Surface Electronic Properties and Site-Specific Laser Desorption Processes of Highly Structured Nanoporous MgO Thin Filmscitations
- 2002"EXAFS Study of Rare-Earth Element Coordination in Calcite"citations
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article
Near-field focused photoemission from polystyrene microspheres studied with photoemission electron microscopy
Abstract
We use photoemission electron microscopy(PEEM) to image 3 μm diameter polystyrene spheres supported on a metalthin film illuminated by 400 nm (~3.1 eV) and 800 nm (~1.5 eV) femtosecond (fs) laser pulses. Intense photoemission is generated by microspheres even though polystyrene is an insulator and its ionization threshold is well above the photon energies employed. We observe intense photoemission from the far side (the side opposite the incident light) of the illuminated microsphere that is attributed to light focusing within the microsphere. For the case of p-polarized, 800 nm fs laser pulses, we observe photoemission exclusively from the far side of the microsphere and additionally resolve sub-50 nm hot spots in the supporting Pt/Pd thin film that are located only within the focal region of the microsphere. We compare the PEEM images with finite difference time domain(FDTD) electrodynamic simulations to model our experimental results. Finally, the FDTD simulations predict light focusing in the microsphere and subsequent interaction with the supporting metal surface that is consistent with the experimental observations.