Details

Autor(en) / Beteiligte

• Rupp, Philipp
• Burger, Christian
• Kling, Nora G
• Kübel, Matthias
• Mitra, Sambit
• Rosenberger, Philipp
• Weatherby, Thomas
• Saito, Nariyuki
• Itatani, Jiro
• Alnaser, Ali S
• Raschke, Markus B
• Rühl, Eckart
• Schlander, Annika
• Gallei, Markus
• Seiffert, Lennart
• Fennel, Thomas
• Bergues, Boris
• Kling, Matthias F

Titel

Few-cycle laser driven reaction nanoscopy on aerosolized silica nanoparticles

Ist Teil von

• Nature communications, 2019-10, Vol.10 (1), p.4655-7, Article 4655

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• Nanoparticles offer unique properties as photocatalysts with large surface areas. Under irradiation with light, the associated near-fields can induce, enhance, and control molecular adsorbate reactions on the nanoscale. So far, however, there is no simple method available to spatially resolve the near-field induced reaction yield on the surface of nanoparticles. Here we close this gap by introducing reaction nanoscopy based on three-dimensional momentum-resolved photoionization. The technique is demonstrated for the spatially selective proton generation in few-cycle laser-induced dissociative ionization of ethanol and water on SiO nanoparticles, resolving a pronounced variation across the particle surface. The results are modeled and reproduced qualitatively by electrostatic and quasi-classical mean-field Mie Monte-Carlo (M C) calculations. Reaction nanoscopy is suited for a wide range of isolated nanosystems and can provide spatially resolved ultrafast reaction dynamics on nanoparticles, clusters, and droplets.