TY - JOUR AU - Schulze Lammers, Bertram AU - López-Salas, Nieves AU - Stein Siena, Julya AU - Mirhosseini, Hossein AU - Yesilpinar, Damla AU - Heske, Julian Joachim AU - Kühne, Thomas AU - Fuchs, Harald AU - Antonietti, Markus AU - Mönig, Harry ID - 33676 IS - 9 JF - ACS Nano KW - General Physics and Astronomy KW - General Engineering KW - General Materials Science SN - 1936-0851 TI - Real-Space Identification of Non-Noble Single Atomic Catalytic Sites within Metal-Coordinated Supramolecular Networks VL - 16 ER - TY - JOUR AU - Schulze Lammers, Bertram AU - Lopez Salas, Nieves AU - Stein Siena, Julya AU - Mirhosseini, Hossein AU - Yesilpinar, Damla AU - Heske, Julian AU - Kühne, Thomas D. AU - Fuchs, Harald AU - Antonietti, Markus AU - Mönig, Harry ID - 40559 IS - 9 JF - ACS Nano KW - General Physics and Astronomy KW - General Engineering KW - General Materials Science SN - 1936-0851 TI - Real-Space Identification of Non-Noble Single Atomic Catalytic Sites within Metal-Coordinated Supramolecular Networks VL - 16 ER - TY - JOUR AB - The nonlinear process of second harmonic generation (SHG) in monolayer (1L) transition metal dichalcogenides (TMD), like WS2, strongly depends on the polarization state of the excitation light. By combination of plasmonic nanostructures with 1L-WS2 by transferring it onto a plasmonic nanoantenna array, a hybrid metasurface is realized impacting the polarization dependency of its SHG. Here, we investigate how plasmonic dipole resonances affect the process of SHG in plasmonic–TMD hybrid metasurfaces by nonlinear spectroscopy. We show that the polarization dependency is affected by the lattice structure of plasmonic nanoantenna arrays as well as by the relative orientation between the 1L-WS2 and the individual plasmonic nanoantennas. In addition, such hybrid metasurfaces show SHG in polarization states, where SHG is usually forbidden for either 1L-WS2 or plasmonic nanoantennas. By comparing the SHG in these channels with the SHG generated by the hybrid metasurface components, we detect an enhancement of the SHG signal by a factor of more than 40. Meanwhile, an attenuation of the SHG signal in usually allowed polarization states is observed. Our study provides valuable insight into hybrid systems where symmetries strongly affect the SHG and enable tailored SHG in 1L-WS2 for future applications. AU - Spreyer, Florian AU - Ruppert, Claudia AU - Georgi, Philip AU - Zentgraf, Thomas ID - 25605 IS - 10 JF - ACS Nano SN - 1936-0851 TI - Influence of Plasmon Resonances and Symmetry Effects on Second Harmonic Generation in WS2–Plasmonic Hybrid Metasurfaces VL - 15 ER - TY - JOUR AU - Zhou, Hongqiang AU - Sain, Basudeb AU - Wang, Yongtian AU - Schlickriede, Christian AU - Zhao, Ruizhe AU - Zhang, Xue AU - Wei, Qunshuo AU - Li, Xiaowei AU - Huang, Lingling AU - Zentgraf, Thomas ID - 16931 IS - 5 JF - ACS Nano SN - 1936-0851 TI - Polarization-Encrypted Orbital Angular Momentum Multiplexed Metasurface Holography VL - 14 ER - TY - JOUR AB - Metal nanoparticles host localized plasmon excitations that allow the manipulation of optical fields at the nanoscale. Despite the availability of several techniques for imaging plasmons, direct access into the symmetries of these excitations remains elusive, thus hindering progress in the development of applications. Here, we present a combination of angle-, polarization-, and space-resolved cathodoluminescence spectroscopy methods to selectively access the symmetry and degeneracy of plasmonic states in lithographically fabricated gold nanoprisms. We experimentally reveal and spatially map degenerate states of multipole plasmon modes with nanometer spatial resolution and further provide recipes for resolving optically dark and out-of-plane modes. Full-wave simulations in conjunction with a simple tight-binding model explain the complex plasmon structure in these particles and reveal intriguing mode-symmetry phenomena. Our approach introduces systematics for a comprehensive symmetry characterization of plasmonic states in high-symmetry nanostructures. AU - Myroshnychenko, Viktor AU - Nishio, Natsuki AU - García de Abajo, F. Javier AU - Förstner, Jens AU - Yamamoto, Naoki ID - 4165 IS - 8 JF - ACS Nano KW - tet_topic_plasmonics SN - 1936-0851 TI - Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution VL - 12 ER - TY - JOUR AU - Tebi, Stefano AU - Paszkiewicz, Mateusz AU - Aldahhak, Hazem AU - Allegretti, Francesco AU - Gonglach, Sabrina AU - Haas, Michael AU - Waser, Mario AU - Deimel, Peter S. AU - Aguilar, Pablo Casado AU - Zhang, Yi-Qi AU - Papageorgiou, Anthoula C. AU - Duncan, David A. AU - Barth, Johannes V. AU - Schmidt, Wolf G. AU - Koch, Reinhold AU - Gerstmann, Uwe AU - Rauls, Eva AU - Klappenberger, Florian AU - Schöfberger, Wolfgang AU - Müllegger, Stefan ID - 19219 JF - ACS Nano SN - 1936-0851 TI - On-Surface Site-Selective Cyclization of Corrole Radicals ER - TY - JOUR AU - Schmaltz, Thomas AU - Gothe, Bastian AU - Krause, Andreas AU - Leitherer, Susanne AU - Steinrück, Hans-Georg AU - Thoss, Michael AU - Clark, Timothy AU - Halik, Marcus ID - 23627 JF - ACS Nano SN - 1936-0851 TI - Effect of Structure and Disorder on the Charge Transport in Defined Self-Assembled Monolayers of Organic Semiconductors VL - 11 ER - TY - JOUR AU - Tebi, Stefano AU - Paszkiewicz, Mateusz AU - Aldahhak, Hazem AU - Allegretti, Francesco AU - Gonglach, Sabrina AU - Haas, Michael AU - Waser, Mario AU - Deimel, Peter S. AU - Aguilar, Pablo Casado AU - Zhang, Yi-Qi AU - Papageorgiou, Anthoula C. AU - Duncan, David A. AU - Barth, Johannes V. AU - Schmidt, Wolf Gero AU - Koch, Reinhold AU - Gerstmann, Uwe AU - Rauls, Eva AU - Klappenberger, Florian AU - Schöfberger, Wolfgang AU - Müllegger, Stefan ID - 13423 JF - ACS Nano SN - 1936-0851 TI - On-Surface Site-Selective Cyclization of Corrole Radicals ER - TY - JOUR AU - Yeom, Han Woong AU - Oh, Deok Mahn AU - Wippermann, Stefan AU - Schmidt, Wolf Gero ID - 13816 JF - ACS Nano SN - 1936-0851 TI - Impurity-Mediated Early Condensation of a Charge Density Wave in an Atomic Wire Array VL - 10 ER - TY - JOUR AU - Steinrück, Hans-Georg AU - Schiener, Andreas AU - Schindler, Torben AU - Will, Johannes AU - Magerl, Andreas AU - Konovalov, Oleg AU - Li Destri, Giovanni AU - Seeck, Oliver H. AU - Mezger, Markus AU - Haddad, Julia AU - Deutsch, Moshe AU - Checco, Antonio AU - Ocko, Benjamin M. ID - 23637 JF - ACS Nano SN - 1936-0851 TI - Nanoscale Structure of Si/SiO2/Organics Interfaces VL - 8 ER - TY - JOUR AU - Wang, Zhenxing AU - Mohammadzadeh, Saeideh AU - Schmaltz, Thomas AU - Kirschner, Johannes AU - Khassanov, Artoem AU - Eigler, Siegfried AU - Mundloch, Udo AU - Backes, Claudia AU - Steinrück, Hans-Georg AU - Magerl, Andreas AU - Hauke, Frank AU - Hirsch, Andreas AU - Halik, Marcus ID - 23641 JF - ACS Nano SN - 1936-0851 TI - Region-Selective Self-Assembly of Functionalized Carbon Allotropes from Solution VL - 7 ER - TY - JOUR AU - Müllegger, Stefan AU - Schöfberger, Wolfgang AU - Rashidi, Mohammad AU - Lengauer, Thomas AU - Klappenberger, Florian AU - Diller, Katharina AU - Kara, Kamuran AU - Barth, Johannes V. AU - Rauls, Eva AU - Schmidt, Wolf Gero AU - Koch, Reinhold ID - 13565 IS - 8 JF - ACS Nano SN - 1936-0851 TI - Preserving Charge and Oxidation State of Au(III) Ions in an Agent-Functionalized Nanocrystal Model System VL - 5 ER -