@article{58606,
  author       = {{Mathew, Albert and Aschwanden, Rebecca and Tripathi, Aditya and Jangid, Piyush and Sain, Basudeb and Zentgraf, Thomas and Kruk, Sergey}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Nonreciprocal Metasurfaces with Epsilon-Near-Zero Materials}}},
  doi          = {{10.1021/acs.nanolett.4c06188}},
  year         = {{2025}},
}

@article{47992,
  abstract     = {{Ferroelectric domain boundaries are quasi-two-dimensional functional interfaces with high prospects for nanoelectronic applications. Despite their reduced dimensionality, they can exhibit complex non-Ising polarization configurations and unexpected physical properties. Here, the impact of the three-dimensional (3D) curvature on the polarization profile of nominally uncharged 180° domain walls in LiNbO3 is studied using second-harmonic generation microscopy and 3D polarimetry analysis. Correlations between the domain-wall curvature and the variation of its internal polarization unfold in the form of modulations of the Néel-like character, which we attribute to the flexoelectric effect. While the Néel-like character originates mainly from the tilting of the domain wall, the internal polarization adjusts its orientation due to the synergetic upshot of dipolar and monopolar bound charges and their variation with the 3D curvature. Our results show that curved interfaces in solid crystals may offer a rich playground for tailoring nanoscale polar states.}},
  author       = {{Acevedo-Salas, Ulises and Croes, Boris and Zhang, Yide and Cregut, Olivier and Dorkenoo, Kokou Dodzi and Kirbus, Benjamin and Singh, Ekta and Beccard, Henrik and Rüsing, Michael and Eng, Lukas M. and Hertel, Riccardo and Eliseev, Eugene A. and Morozovska, Anna N. and Cherifi-Hertel, Salia}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}},
  number       = {{3}},
  pages        = {{795--803}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Impact of 3D Curvature on the Polarization Orientation in Non-Ising Domain Walls}}},
  doi          = {{10.1021/acs.nanolett.2c03579}},
  volume       = {{23}},
  year         = {{2023}},
}

@article{44044,
  abstract     = {{Dispersion is present in every optical setup and is often an undesired effect, especially in nonlinear-optical experiments where ultrashort laser pulses are needed. Typically, bulky pulse compressors consisting of gratings or prisms are used
to address this issue by precompensating the dispersion of the optical components. However, these devices are only able to compensate for a part of the dispersion (second-order dispersion). Here, we present a compact pulse-shaping device that uses plasmonic metasurfaces to apply an arbitrarily designed spectral phase delay allowing for a full dispersion control. Furthermore, with specific phase encodings, this device can be used to temporally reshape the incident laser pulses into more complex pulse forms such as a double pulse. We verify the performance of our device by using an SHG-FROG measurement setup together with a retrieval algorithm to extract the dispersion that our device applies to an incident laser pulse.}},
  author       = {{Geromel, René and Georgi, Philip and Protte, Maximilian and Lei, Shiwei and Bartley, Tim and Huang, Lingling and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}},
  number       = {{8}},
  pages        = {{3196 -- 3201}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Compact Metasurface-Based Optical Pulse-Shaping Device}}},
  doi          = {{10.1021/acs.nanolett.2c04980}},
  volume       = {{23}},
  year         = {{2023}},
}

@article{37713,
  author       = {{Murzakhanov, Fadis F. and Mamin, Georgy Vladimirovich and Orlinskii, Sergei Borisovich and Gerstmann, Uwe and Schmidt, Wolf Gero and Biktagirov, Timur and Aharonovich, Igor and Gottscholl, Andreas and Sperlich, Andreas and Dyakonov, Vladimir and Soltamov, Victor A.}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}},
  number       = {{7}},
  pages        = {{2718--2724}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Electron–Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized V<sub>B</sub><sup>–</sup> Spin States in hBN}}},
  doi          = {{10.1021/acs.nanolett.1c04610}},
  volume       = {{22}},
  year         = {{2022}},
}

@article{22215,
  abstract     = {{Topological states of light represent counterintuitive optical modes localized at boundaries of finite-size optical structures that originate from the properties of the bulk. Being defined by bulk properties, such boundary states are insensitive to certain types of perturbations, thus naturally enhancing robustness of photonic circuitries. Conventionally, the N-dimensional bulk modes correspond to (N – 1)-dimensional boundary states. The higher-order bulk-boundary correspondence relates N-dimensional bulk to boundary states with dimensionality reduced by more than 1. A special interest lies in miniaturization of such higher-order topological states to the nanoscale. Here, we realize nanoscale topological corner states in metasurfaces with C6-symmetric honeycomb lattices. We directly observe nanoscale topology-empowered edge and corner localizations of light and enhancement of light–matter interactions via a nonlinear imaging technique. Control of light at the nanoscale empowered by topology may facilitate miniaturization and on-chip integration of classical and quantum photonic devices.}},
  author       = {{Kruk, Sergey S. and Gao, Wenlong and Choi, Duk-Yong and Zentgraf, Thomas and Zhang, Shuang and Kivshar, Yuri}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{11}},
  pages        = {{4592–4597}},
  publisher    = {{ACS}},
  title        = {{{Nonlinear Imaging of Nanoscale Topological Corner States}}},
  doi          = {{10.1021/acs.nanolett.1c00449}},
  volume       = {{21}},
  year         = {{2021}},
}

@article{46017,
  author       = {{Zhang, Dawei and Luo, Zheng-Dong and Yao, Yin and Schoenherr, Peggy and Sha, Chuhan and Pan, Ying and Sharma, Pankaj and Alexe, Marin and Seidel, Jan}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}},
  number       = {{2}},
  pages        = {{995--1002}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Anisotropic Ion Migration and Electronic Conduction in van der Waals Ferroelectric CuInP2S6}}},
  doi          = {{10.1021/acs.nanolett.0c04023}},
  volume       = {{21}},
  year         = {{2021}},
}

@article{29747,
  author       = {{Jurgen von Bardeleben, Hans and Cantin, Jean-Louis and Gerstmann, Uwe and Schmidt, Wolf Gero and Biktagirov, Timur}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Mechanical Engineering, Condensed Matter Physics, General Materials Science, General Chemistry, Bioengineering}},
  number       = {{19}},
  pages        = {{8119--8125}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Spin Polarization, Electron–Phonon Coupling, and Zero-Phonon Line of the NV Center in 3C-SiC}}},
  doi          = {{10.1021/acs.nanolett.1c02564}},
  volume       = {{21}},
  year         = {{2021}},
}

@article{16944,
  author       = {{Schlickriede, Christian and Kruk, Sergey S. and Wang, Lei and Sain, Basudeb and Kivshar, Yuri and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{6}},
  pages        = {{4370–4376}},
  title        = {{{Nonlinear imaging with all-dielectric metasurfaces}}},
  doi          = {{10.1021/acs.nanolett.0c01105}},
  volume       = {{20}},
  year         = {{2020}},
}

@article{11953,
  abstract     = {{As flexible optical devices that can manipulate the phase and amplitude of light, metasurfaces would clearly benefit from directional optical properties. However, single layer metasurface systems consisting of two-dimensional nanoparticle arrays exhibit only a weak spatial asymmetry perpendicular to the surface and therefore have mostly symmetric transmission features. Here, we present a metasurface design principle for nonreciprocal polarization encryption of holographic images. Our approach is based on a two-layer plasmonic metasurface design that introduces a local asymmetry and generates a bidirectional functionality with full phase and amplitude control of the transmitted light. The encoded hologram is designed to appear in a particular linear cross-polarization channel, while it is disappearing in the reverse propagation direction. Hence, layered metasurface systems can feature asymmetric transmission with full phase and amplitude control and therefore expand the design freedom in nanoscale optical devices toward asymmetric information processing and security features for anticounterfeiting applications.}},
  author       = {{Frese, Daniel and Wei, Qunshuo and Wang, Yongtian and Huang, Lingling and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{6}},
  pages        = {{3976--3980}},
  title        = {{{Nonreciprocal Asymmetric Polarization Encryption by Layered Plasmonic Metasurfaces}}},
  doi          = {{10.1021/acs.nanolett.9b01298}},
  volume       = {{19}},
  year         = {{2019}},
}

@article{12917,
  author       = {{Reineke, Bernhard and Sain, Basudeb and Zhao, Ruizhe and Carletti, Luca and Liu, Bingyi and Huang, Lingling and de Angelis, Costantino and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{9}},
  pages        = {{6585–6591}},
  title        = {{{Silicon metasurfaces for third harmonic geometric phase manipulation and multiplexed holography}}},
  doi          = {{10.1021/acs.nanolett.9b02844}},
  volume       = {{19}},
  year         = {{2019}},
}

@article{14870,
  author       = {{Wei, Qunshuo and Sain, Basudeb and Wang, Yongtian and Reineke, Bernhard and Li, Xiaowei and Huang, Lingling and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{12}},
  pages        = {{8964–8971}},
  title        = {{{Simultaneous Spectral and Spatial Modulation for Color Printing and Holography Using All-dielectric Metasurfaces}}},
  doi          = {{10.1021/acs.nanolett.9b03957}},
  volume       = {{19}},
  year         = {{2019}},
}

@article{13651,
  author       = {{Chen, Shumei and Reineke, Bernhard and Li, Guixin and Zentgraf, Thomas and Zhang, Shuang}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{9}},
  pages        = {{6278--6283}},
  title        = {{{Strong Nonlinear Optical Activity Induced by Lattice Surface Modes on Plasmonic Metasurface}}},
  doi          = {{10.1021/acs.nanolett.9b02417}},
  volume       = {{19}},
  year         = {{2019}},
}

@article{23624,
  author       = {{Horowitz, Yonatan and Steinrück, Hans-Georg and Han, Hui-Ling and Cao, Chuntian and Abate, Iwnetim Iwnetu and Tsao, Yuchi and Toney, Michael F. and Somorjai, Gabor A.}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  pages        = {{2105--2111}},
  title        = {{{Fluoroethylene Carbonate Induces Ordered Electrolyte Interface on Silicon and Sapphire Surfaces as Revealed by Sum Frequency Generation Vibrational Spectroscopy and X-ray Reflectivity}}},
  doi          = {{10.1021/acs.nanolett.8b00298}},
  volume       = {{18}},
  year         = {{2018}},
}

@article{6542,
  abstract     = {{Transient changes of the optical response of WS2 monolayers are studied by femtosecond broadband pump–probe spectroscopy. Time-dependent absorption spectra are analyzed by tracking the line width broadening, bleaching, and energy shift of the main exciton resonance as a function of time delay after the excitation. Two main sources for the pump-induced changes of the optical response are identified. Specifically, we find an interplay between modifications induced by many-body interactions from photoexcited carriers and by the subsequent transfer of the excitation to the phonon system followed by cooling of the material through the heat transfer to the substrate.}},
  author       = {{Ruppert, Claudia and Chernikov, Alexey and Hill, Heather M. and Rigosi, Albert F. and Heinz, Tony F.}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{Atomically thin 2D materials, carrier and phonon dynamics, ultrafast spectroscopy}},
  number       = {{2}},
  pages        = {{644--651}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{The Role of Electronic and Phononic Excitation in the Optical Response of Monolayer WS2 after Ultrafast Excitation}}},
  doi          = {{10.1021/acs.nanolett.6b03513}},
  volume       = {{17}},
  year         = {{2017}},
}

@article{680,
  author       = {{Peter, Manuel and Hildebrandt, Andre and Schlickriede, Christian and Gharib, Kimia and Zentgraf, Thomas and Förstner, Jens and Linden, Stefan}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{tet_topic_opticalantenna}},
  number       = {{7}},
  pages        = {{4178--4183}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Directional Emission from Dielectric Leaky-Wave Nanoantennas}}},
  doi          = {{10.1021/acs.nanolett.7b00966}},
  volume       = {{17}},
  year         = {{2017}},
}

@article{684,
  author       = {{Walter, Felicitas and Li, Guixin and Meier, Cedrik and Zhang, Shuang and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{5}},
  pages        = {{3171--3175}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Ultrathin Nonlinear Metasurface for Optical Image Encoding}}},
  doi          = {{10.1021/acs.nanolett.7b00676}},
  volume       = {{17}},
  year         = {{2017}},
}

@article{1199,
  author       = {{Li, Guixin and Wu, Lin and Li, King F. and Chen, Shumei and Schlickriede, Christian and Xu, Zhengji and Huang, Siya and Li, Wendi and Liu, Yanjun and Pun, Edwin Y. B. and Zentgraf, Thomas and Cheah, Kok W. and Luo, Yu and Zhang, Shuang}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  number       = {{12}},
  pages        = {{7974--7979}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Nonlinear Metasurface for Simultaneous Control of Spin and Orbital Angular Momentum in Second Harmonic Generation}}},
  doi          = {{10.1021/acs.nanolett.7b04451}},
  volume       = {{17}},
  year         = {{2017}},
}

@article{23632,
  author       = {{Cao, Chuntian and Steinrück, Hans-Georg and Shyam, Badri and Stone, Kevin H. and Toney, Michael F.}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  pages        = {{7394--7401}},
  title        = {{{In Situ Study of Silicon Electrode Lithiation with X-ray Reflectivity}}},
  doi          = {{10.1021/acs.nanolett.6b02926}},
  volume       = {{16}},
  year         = {{2016}},
}

@article{3892,
  abstract     = {{Plasmon modes of the exact same individual gold nanoprisms are investigated through combined nanometer-resolved electron energy-loss spectroscopy (EELS) and cathodoluminescence (CL) measurements. We show that CL only probes the radiative modes, in contrast to EELS, which additionally reveals dark modes. The combination of both techniques on the same particles thus provides complementary information and also demonstrates that although the radiative modes give rise to very similar spatial distributions when probed by EELS or CL, their resonant energies appear to be different. We trace this phenomenon back to plasmon dissipation, which affects in different ways the plasmon signatures probed by these techniques. Our experiments are in agreement with electromagnetic numerical simulations and can be further interpreted within the framework of a quasistatic analytical model. We therefore demonstrate that CL and EELS are closely related to optical scattering and extinction, respectively, with the addition of nanometer spatial resolution.}},
  author       = {{Losquin, Arthur and Zagonel, Luiz F. and Myroshnychenko, Viktor and Rodríguez-González, Benito and Tencé, Marcel and Scarabelli, Leonardo and Förstner, Jens and Liz-Marzán, Luis M. and García de Abajo, F. Javier and Stéphan, Odile and Kociak, Mathieu}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{tet_topic_plasmonics}},
  number       = {{2}},
  pages        = {{1229--1237}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Unveiling Nanometer Scale Extinction and Scattering Phenomena through Combined Electron Energy Loss Spectroscopy and Cathodoluminescence Measurements}}},
  doi          = {{10.1021/nl5043775}},
  volume       = {{15}},
  year         = {{2015}},
}

@article{1697,
  author       = {{Zeuner, Franziska and Muldarisnur, Mulda and Hildebrandt, Andre and Förstner, Jens and Zentgraf, Thomas}},
  issn         = {{1530-6984}},
  journal      = {{Nano Letters}},
  keywords     = {{tet_topic_plasmonics}},
  number       = {{6}},
  pages        = {{4189--4193}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Coupling Mediated Coherent Control of Localized Surface Plasmon Polaritons}}},
  doi          = {{10.1021/acs.nanolett.5b01381}},
  volume       = {{15}},
  year         = {{2015}},
}