| 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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Aizpurua, Javier
Donostia International Physics Center
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Unified treatment of light emission by inelastic tunneling: Interaction of electrons and photons beyond the gapcitations
- 2024Footprints of atomic-scale features in plasmonic nanoparticles as revealed by electron energy loss spectroscopycitations
- 2023Probing optical anapoles with fast electron beamscitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2022Probing the role of grain boundaries in single Cu nanoparticle oxidation by in situ plasmonic scatteringcitations
- 2020Probing the radiative electromagnetic local density of states in nanostructures with a scanning tunneling microscopecitations
- 2020Probing the radiative electromagnetic local density of states in nanostructures with a scanning tunneling microscopecitations
- 2020Probing the radiative electromagnetic local density of states in nanostructures with a scanning tunneling microscopecitations
- 2019Gold‐ and Silver‐Coated Barium Titanate Nanocomposites as Probes for Two‐Photon Multimodal Microspectroscopycitations
- 2018Vibrational electron energy loss spectroscopy in truncated dielectric slabscitations
- 2018Surface-enhanced molecular electron energy loss spectroscopycitations
- 2017Probing low-energy hyperbolic polaritons in van der Waals crystals with an electron microscope
Places of action
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article
Gold‐ and Silver‐Coated Barium Titanate Nanocomposites as Probes for Two‐Photon Multimodal Microspectroscopy
Abstract
Improved multiphoton‐excited imaging and microspectroscopy require nanoprobes that can give different nonlinear optical signals. Here, composite nanostructures with a barium titanate core and a plasmonic moiety at their surface are synthesized and characterized. It is found that the core provides a high second‐order nonlinear susceptibility for sensitive second harmonic generation (SHG) imaging in living cells. As a second function in the two‐photon regime, the plasmonic part yields high local fields for resonant and nonresonant surface enhanced hyper Raman scattering (SEHRS). SEHRS complements the one‐photon surface enhanced Raman scattering (SERS) spectra that are also enhanced by the plasmonic shells. Barium titanate silver core–shell (Ag@BaTiO3) composites are specifically suited for SEHRS and SHG excited at 1064 nm, while gold at barium titanate (Au@BaTiO3) nanoparticles can be useful in a combination of SHG and SERS at lower wavelengths, here at 785 nm and 850 nm. The theoretical models show that the optical properties of the BaTiO3 dielectric core depend on probing frequency, shape, size, and plasmonic properties of the surrounding gold nanoparticles so that they can be optimized for a particular type of experiment. These versatile, tunable probes give new opportunities for combined multiphoton probing of morphological structure and chemical properties of biosystems. ; Peer Reviewed