  Volumetric Method of Moments (MoM) and Conceptual Multi-level Building Blocks for nano topologies; ; et al in IEEE Photonics Journal (2012), 4(1), 267-282 Based on the relationship between charge dimensionality and singular field behavior, it is proven that in a volumetric description of a volume current carrying topology, half rooftops of different binary ... [more ▼] Based on the relationship between charge dimensionality and singular field behavior, it is proven that in a volumetric description of a volume current carrying topology, half rooftops of different binary hierarchical level are allowed without introducing numerical difficulties. This opens the possibility to use a very efficient multi-level hierarchical meshing scheme in a Volumetric Method of Moments (MoM) algorithm. The new meshing scheme is validated by numerical calculations and experiments. It paves the way towards a much more efficient use of MoM in the description of arbitrarily shaped nano-structures at IR and optical frequencies. [less ▲] Detailed reference viewed: 5 (0 ULg)Plasmon-Enhanced Sub-Wavelength Laser Ablation: Plasmonic Nanojets; ; et al in Advanced Materials (2012), 24 Plasmonic hotspots are regions on the surface of metal nanostructures where light causes very strong oscillation of the electrons. Because electron oscillations constitute an electric current and because ... [more ▼] Plasmonic hotspots are regions on the surface of metal nanostructures where light causes very strong oscillation of the electrons. Because electron oscillations constitute an electric current and because electric currents heat up the material the same way an electric stove heats up in the kitchen, the plasmonic hotspots are extremely hot. So hot that they can melt the gold in a spot much smaller than the wavelength of light. We were successfully able to demonstrate that this tiny little pool of molten gold can give rise to the smallest nanojets ever observed. [less ▲] Detailed reference viewed: 8 (1 ULg)Distributing the Optical Near-Field for Efficient Field-Enhancements in Nanostructures; ; et al in Advanced Materials (2012), 24 Circularly polarized light imparts a sense of rotation on the electron density in ring-shaped gold nanostructures. As a consequence, the near-field enhancement becomes homogeneous on the surface of the ... [more ▼] Circularly polarized light imparts a sense of rotation on the electron density in ring-shaped gold nanostructures. As a consequence, the near-field enhancement becomes homogeneous on the surface of the nanostructures, thereby increasing the opportunity for interaction with molecules. This type of nanostructured samples can find a broad range of applications in chemical processes where the interaction between molecules and local field enhancements play an important role. [less ▲] Detailed reference viewed: 9 (2 ULg)Robustness of the scanning second harmonic generation microscopy technique for characterization of hotspot patterns in plasmonic nanomaterials; ; et al in Proceedings of SPIE (2012), 8424 Scanning second harmonic generation (SHG) microscopy is becoming an important tool for characterizing nanopatterned metal surfaces and mapping plasmonic local field enhancements. Here we study G-shaped ... [more ▼] Scanning second harmonic generation (SHG) microscopy is becoming an important tool for characterizing nanopatterned metal surfaces and mapping plasmonic local field enhancements. Here we study G-shaped and mirror-G-shaped gold nanostructures and test the robustness of the experimental results versus the direction of scanning, the numerical aperture of the objective, the magnification, and the size of the laser spot on the sample. We find that none of these parameters has a significant influence on the experimental results. [less ▲] Detailed reference viewed: 21 (0 ULg)The role of chiral local field enhancements below the resolution limit of Second Harmonic Generation microscopy; ; et al in Optics Express (2011), 20(1), 256 While it has been demonstrated that, above its resolution limit, Second Harmonic Generation (SHG) microscopy can map chiral local field enhancements, below that limit, structural defects were found to ... [more ▼] While it has been demonstrated that, above its resolution limit, Second Harmonic Generation (SHG) microscopy can map chiral local field enhancements, below that limit, structural defects were found to play a major role. Here we show that, even below the resolution limit, the contributions from chiral local field enhancements to the SHG signal can dominate over those by structural defects. We report highly homogeneous SHG micrographs of star-shaped gold nanostructures, where the SHG circular dichroism effect is clearly visible from virtually every single nanostructure. Most likely, size and geometry determine the dominant contributions to the SHG signal in nanostructured systems. [less ▲] Detailed reference viewed: 9 (1 ULg)Hotspot Decorations Map Plasmonic Patterns with the Resolution of Scanning Probe Techniques; Silhanek, Alejandro  ; et alin Physical Review Letters (2011), 106(22), In high definition mapping of the plasmonic patterns on the surfaces of nanostructures, the diffraction limit of light remains an important obstacle. Here we demonstrate that this diffraction limit can be ... [more ▼] In high definition mapping of the plasmonic patterns on the surfaces of nanostructures, the diffraction limit of light remains an important obstacle. Here we demonstrate that this diffraction limit can be completely circumvented. We show that upon illuminating nanostructures made of nickel and palladium, the resulting surface-plasmon pattern is imprinted on the structures themselves; the hotspots (regions of local field enhancement) are decorated with overgrowths, allowing for their subsequent imaging with scanning-probe techniques. The resulting resolution of plasmon pattern imaging is correspondingly improved. [less ▲] Detailed reference viewed: 11 (1 ULg)Nimesulide, a novel NSAID of the sulfonanilide class, inhibits PGE2 production by human chondrocytes without affecting proteoglycans synthesisHenrotin, Yves ; ; et alin Rheumatology in Europe (1997), 26(S2), 170 Detailed reference viewed: 17 (4 ULg)Modulation of chondrocyte cytokines synthesis by endogeneously produced nitric oxideHenrotin, Yves ; ; et alin Rheumatology in Europe (1997), 26(S2), 83 Detailed reference viewed: 14 (6 ULg)Modulation of chondrocyte cytokines synthesis by endogeneously produced nitric oxideHenrotin, Yves ; ; et alin Revue du Rhumatisme (English ed.) (1997), 11 Detailed reference viewed: 12 (4 ULg)In vitro study on the effects of aceclofenac on proteoglycan and type II collagen production by human chondrocytesHenrotin, Yves ; ; et alin Osteoarthritis and Cartilage (1997), 5 Detailed reference viewed: 9 (4 ULg)S12911, a new divalent strontium salt increases cartilage matrix formationHenrotin, Yves ; ; et alin Osteoarthritis and Cartilage (1997), 5 Detailed reference viewed: 10 (3 ULg)IGF-1 but not IL-1bêta effects on the proteoglycan production by chondrocytes are regulated by strontium saltsHenrotin, Yves ; ; et alin Osteoarthritis and Cartilage (1997), 5 Detailed reference viewed: 10 (4 ULg)In vitro effects of aceclofenac on cytokines (IL-6, IL-8, LIF) and PGE2 production by human chondrocytesHenrotin, Yves ; ; et alin Osteoarthritis and Cartilage (1997), 5 Detailed reference viewed: 10 (4 ULg)Régulation de la synthèse de cytokines pro-inflammatoires par l’oxyde nitrique (NO)Henrotin, Yves ; ; et alin Revue du Rhumatisme (1997), 64(11), 763 Detailed reference viewed: 15 (3 ULg) |
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