Article
Materials Science, Multidisciplinary
Tingting Liu, Xinyuan Fang, Shuyuan Xiao
Summary: Engineering nonlinear optical processes in dielectric nanostructures using chalcogenide phase-change material allows for efficient tuning of second-harmonic generation processes. The nonlinear SHG signal from nanoantennas can be enhanced and modulated by optically induced Mie-type resonances and the amorphous-to-crystalline phase change in GST. By adjusting the refractive index of GST, a maximum modulation depth of up to 540% is demonstrated, showing the potential for control of optical nonlinearity and smart designing of tunable nonlinear optical devices.
Article
Chemistry, Multidisciplinary
Yoonsoo Rho, SeokJae Yoo, Daniel B. Durham, DongJun Kang, Andrew M. Minor, Costas P. Grigoropoulos
Summary: Nonlinear optical response is a useful tool for studying the properties of materials, but its weak signal and limited reach make it difficult to probe deep-subwavelength-scale nonlinear optics. In this study, we propose a new method using an SHG-active plasmonic nanotip to achieve efficient second harmonic generation (SHG) nanoscopy. Our simulations suggest that enhancing the nonlinear response of the sample or suppressing the tip's response can lead to a high near-field SHG contrast, providing evidence of quantum mechanical nonlinear energy transfer. Furthermore, this technique can be used to study nanoscale corrosion and other physicochemical phenomena.
Article
Chemistry, Multidisciplinary
Yang Liu, Ya-Ping Gong, Shining Geng, Mei-Ling Feng, Despoina Manidaki, Zeyu Deng, Constantinos C. Stoumpos, Pieremanuele Canepa, Zewen Xiao, Wei-Xiong Zhang, Lingling Mao
Summary: Ge-based hybrid perovskite materials show great potential for second harmonic generation (SHG). Newly discovered Ge-based bromide perovskite materials exhibit tunable SHG responses and the high SHG efficiency is attributed to specific structural and theoretical factors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Optics
Vyacheslav A. Trofimov, Dmitry M. Kharitonov, Mikhail Fedotov
Summary: This paper proposes a new scheme for fifth harmonic generation based on cascading third harmonic generation, which can improve frequency up-conversion efficiency. The feasibility of this scheme is theoretically demonstrated using multi-scale approach and can be applied directly to femtosecond pulses in a medium with cubic nonlinear response.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Mingyang Xin, Puxin Cheng, Xiao Han, Rongchao Shi, Yongshen Zheng, Junjie Guan, Hexuan Chen, Chao Wang, Yuhan Liu, Jialiang Xu, Xian-He Bu
Summary: This study synthesized hybrid chiral organic-inorganic perovskite materials using naturally abundant amino acids, demonstrating resonance enhanced second-harmonic generation. The crystals of these materials possess balanced nonlinear optical performances. This work showcases the potential of naturally abundant amino acids for the construction of next generation optoelectronic materials.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Multidisciplinary
Davide Rocco, Attilio Zilli, Antonio Ferraro, Adrien Borne, Vincent Vinel, Giuseppe Leo, Aristide Lemaitre, Carlo Zucchetti, Michele Celebrano, Roberto Caputo, Costantino De Angelis, Marco Finazzi
Summary: We experimentally demonstrate the ability to modulate the second harmonic power emitted by nonlinear AlGaAs metasurfaces embedded in a liquid crystal matrix by changing the relative in-plane orientation between the liquid crystal director and the linear polarization of the excitation light. Numerical simulations show that this modulation is achieved by efficiently radiating the second harmonic through resonant excitation of electric or magnetic dipole field distributions inside each meta-atom. The resonant behavior depends on the geometric parameters, crystallographic orientation, and anisotropy of the metasurface, which can be optimized to modulate the emitted second harmonic power by approximately one order of magnitude.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Zelin Hao, Wenwei Liu, Zhancheng Li, Zhi Li, Guangzhou Geng, Yanchun Wang, Hua Cheng, Hammad Ahmed, Xianzhong Chen, Junjie Li, Jianguo Tian, Shuqi Chen
Summary: Metasurfaces have shown great potential in optical wave manipulation but face challenges in multidimensional manipulation of harmonic waves generated by nonlinear metasurfaces. This study presents an efficient design strategy based on the hydrodynamic model of free electron dynamics, allowing for full complex-amplitude modulation of second harmonic generation. The proposed nonlinear metasurfaces demonstrate spin-selective SHG optical vortices with independent topological charges, opening up new possibilities for nonlinear metasurface applications in optical information and multifunctional integration.
LASER & PHOTONICS REVIEWS
(2021)
Article
Materials Science, Multidisciplinary
Fan Yang, Cristian Ciraci
Summary: We present a theoretical study on second-harmonic generation from a singular metasurface, which strongly interacts with incident light and generates intense surface polarization, resulting in the generation of second-harmonic field. By using transformation optics, the calculation of nonlinear optical response is simplified, and the dependence on the incident angle is weak, making it potentially useful for all-angle harmonic generation. Furthermore, we investigate the symmetry dependence of second-harmonic generation in the far field and demonstrate an enhanced conversion efficiency under normal incidence by breaking the surface inversion symmetry.
Article
Mathematics
Yernat M. Assylbekov, Ting Zhou
Summary: In this paper, an inverse boundary value problem of electromagnetism with nonlinear Second Harmonic Generation (SHG) process is considered. The unique determination of the electromagnetic material parameters and the SHG susceptibility parameter of the medium is shown by making electromagnetic measurements on the boundary. The case of interest is when a frequency is fixed.
JOURNAL OF DIFFERENTIAL EQUATIONS
(2021)
Article
Optics
Alexander W. A. Murphy, Zichen Liu, Andrey V. Gorbach, Adelina Ilie, Ventsislav K. Valev
Summary: The study presents the first hyperspectral multiphoton analysis of densely-packed stacks of twisted and/or fused WS2 nanosheets, known as nanomesh, which exhibits scalable, efficient, and broadband optical properties due to double resonances induced by internal defects. This makes the nanomesh a prime candidate for integration into quantum optical technologies.
LASER & PHOTONICS REVIEWS
(2021)
Article
Chemistry, Multidisciplinary
Zhihang Guo, Junzi Li, Rulin Liu, Yang Yang, Changshun Wang, Xi Zhu, Tingchao He
Summary: Understanding the chiral mechanism in chiral hybrid perovskites is crucial for the development of chiroptoelectronic applications. By employing a spacer cation alloying strategy, we demonstrate second-harmonic-generation circular dichroism (CD) microarea imaging in chiral perovskite thin films, revealing their spatially correlated chirality. Our findings, combined with theoretical calculations, suggest that the spatially correlated chirality arises from localized out-of-plane supramolecular orientations.
Article
Chemistry, Multidisciplinary
Chao Wu, Xingxing Jiang, Lin Lin, Yilei Hu, Tianhui Wu, Zheshuai Lin, Zhipeng Huang, Mark G. Humphrey, Chi Zhang
Summary: The study presents the synthesis of a polar NLO vanadate Cs4V8O22 (CVO) with excellent optical properties and strong second-harmonic generation effects achieved through hydrothermal synthesis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Nanoscience & Nanotechnology
Luca Carletti, Marco Gandolfi, Davide Rocco, Andrea Tognazzi, Domenico de Ceglia, Maria Antonietta Vincenti, Costantino De Angelis
Summary: Optically resonant dielectric and semiconductor metasurfaces are promising areas of research in nanophotonics and light-matter interaction, with recent focus on active tuning of linear response and nonlinear effects. Dynamic nonlinear metasurfaces based on these materials could potentially meet the demand for integrated on-chip components with essential functionalities.
Article
Chemistry, Physical
Qingbo Liu, Yuan He, Jianfeng Yan, Zhifeng Chen, Chujun Zhao, Hong Zhou
Summary: A simple vapor route was used to prepare large-area, high-quality thin films of zero-dimensional (0D) lead-free Cs3Cu2I5 perovskites. The films exhibited strong blue emission and high third-order nonlinear absorption coefficient. These thin films have potential applications in optical switching and limiting.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Alejandro Gomez-Tornero, Luisa E. Bausa, Mariola O. Ramirez
Summary: The combination of plasmonic nanostructures with nonlinear dielectric systems has been proven to enhance frequency conversion processes at metal-dielectric interfaces. Using ferroelectric lithography, scalable micrometric arrangements of silver nanoparticles compactly distributed on hexagonal regions have been fabricated to support localized and extended plasmonic modes and provide large spatial regions of field enhancement at optical frequencies. The resonant excitation of plasmonic modes by Ag nanoparticle-filled hexagons in the near infrared region results in a significant enhancement of blue second harmonic intensity generated on the surface of a LiNbO3 crystal.
Article
Chemistry, Multidisciplinary
Jeremy Vuilleumier, Geoffrey Gaulier, Raphael De Matos, Yannick Mugnier, Gabriel Campargue, Jean-Pierre Wolf, Luigi Bonacina, Sandrine Gerber-Lemaire
HELVETICA CHIMICA ACTA
(2020)
Article
Chemistry, Multidisciplinary
Mathias Urbain, Florian Riporto, Sandrine Beauquis, Virginie Monnier, Jean-Christophe Marty, Christine Galez, Christiane Durand, Yann Chevolot, Ronan Le Dantec, Yannick Mugnier
Summary: Phase-pure, highly crystalline sub-50 nm LiNbO3 nanocrystals were prepared through a non-aqueous solvothermal process, with adjustable size and shape anisotropy achieved by varying the reaction medium composition. Colloidal stability of the nanocrystals in ethanol- and water-based suspensions was assessed, and the impact of size and shape distribution on reaction pathways and growth mechanisms was discussed, highlighting the role of the polar, non-perovskite crystalline structure of LiNbO3 in nanocrystal shape anisotropy.
Article
Cell Biology
Flore Sinturel, Pascal Gos, Volodymyr Petrenko, Claudia Hagedorn, Florian Kreppel, Kai-Florian Storch, Darko Knutti, Andre Liani, Charles Weitz, Yann Emmenegger, Paul Franken, Luigi Bonacina, Charna Dibner, Ueli Schibler
Summary: The study suggests that the suprachiasmatic nucleus is necessary for synchronizing organs, but even in the absence of the suprachiasmatic nucleus or other cellular oscillators, the livers of mice still exhibit circadian rhythms.
GENES & DEVELOPMENT
(2021)
Editorial Material
Biotechnology & Applied Microbiology
Adriele Prina-Mello, Luigi Bonacina, Davide Staedler, Dania Movia
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Rachael Taitt, Mathias Urbain, Zacharie Behel, Ana-Maria Pablo-Sainz-Ezquerra, Iryna Kandybka, Eloise Millet, Nicolas Martinez-Rodriguez, Christelle Yeromonahos, Sandrine Beauquis, Ronan Le Dantec, Yannick Mugnier, Pierre-Francois Brevet, Yann Chevolot, Virginie Monnier
Summary: Hybrid nanoparticles consisting of LiNbO3 core coated with varying densities of gold nano-seeds were found to exhibit tunable nonlinear optical properties. The addition of gold nano-seeds resulted in surface charge reversal and a decrease in first hyperpolarizability with increasing seed density, indicating a dominance of the second harmonic volumic contribution.
Article
Multidisciplinary Sciences
Geoffrey Gaulier, Quentin Dietschi, Swarnendu Bhattacharyya, Cedric Schmidt, Matteo Montagnese, Adrien Chauvet, Sylvain Hermelin, Florence Chiodini, Luigi Bonacina, Pedro L. Herrera, Ursula Rothlisberger, Ivan Rodriguez, Jean-Pierre Wolf
Summary: Experiments have shown that the initial step of vision involves ultra-fast photoisomerization controlled by shaping the phase of femtosecond laser pulses. The electric signals fired from the retina of living mice in response to light stimulation on a femtosecond time scale were found to be sensitive to manipulation of light excitation. This sensitivity is attributed to interactions with light pulses near conical intersections, involving processes like pump-dump and pump-repump.
Article
Nanoscience & Nanotechnology
Raphael De Matos, Adrian Gheata, Gabriel Campargue, Jeremy Vuilleumier, Laura Nicolle, Katarzyna Pierzchala, Ileana Jelescu, Fiorella Lucarini, Ivan Gautschi, Florian Riporto, Ronan Le Dantec, Yannick Mugnier, Anne-Sophie Chauvin, Marinella Mazzanti, Davide Staedler, Dario Diviani, Luigi Bonacina, Sandrine Gerber-Lemaire
Summary: In this study, a bimodal nonlinear optical/magnetic resonance imaging (MRI) contrast agent was developed by covalently conjugating Gd(III) chelates to coated lithium niobate harmonic nanoparticles (HNPs). The resulting nanoconjugates exhibited strong contrast in both T1-weighted MRI and cancer cells, as well as dual T1/T2 MRI capabilities. The functionalization protocol ensured high stability of the nanoconjugates in a physiological environment and preserved their efficient nonlinear optical response.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Rachael Taitt, Mathias Urbain, Kevin Bredillet, Zacharie Behel, Giacomo Ceccone, Jorge Banuls-Ciscar, Sandrine Beauquis, Yannick Mugnier, Pierre-Francois Brevet, Ronan Le Dantec, Yann Chevolot, Virginie Monnier
Summary: This study presents a method for preparing nanoparticles containing a lithium niobate core and a gold shell using a combination of seeded-growth and layer-by-layer approaches. The influence of three synthesis parameters on the nanoparticles' characteristics is studied, and the growth of the gold shell is investigated using various techniques. The optical and photothermal properties of the core-shell nanoparticles are also analyzed.
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
(2022)
Review
Chemistry, Multidisciplinary
Geraldine Dantelle, Sandrine Beauquis, Ronan Le Dantec, Virginie Monnier, Christine Galez, Yannick Mugnier
Summary: With the miniaturization of electronic-based devices, there is increasing research interest in the elaboration of multifunctional noncentrosymmetric nanocrystals with ferroelectric, pyroelectric, piezoelectric, and nonlinear optical properties. This article critically reviews recent achievements in the preparation of 0-D perovskite and nonperovskite oxides in the size range of 5-500 nm using solution-based methods, and discusses the size, morphology, and aggregation state in relation to the proposed formation mechanisms. The research community needs to pay special attention to the detailed understanding of the reaction pathways and crystallization mechanisms in order to improve the rational design of these multifunctional oxides in the future.
Article
Chemistry, Multidisciplinary
Adrian Gheata, Alessandra Spada, Manon Wittwer, Ameni Dhouib, Emilie Molina, Yannick Mugnier, Sandrine Gerber-Lemaire
Summary: Inorganic nanoparticles can be surface-functionalized to enhance their biomedical applications. Silanization is a versatile coating strategy that allows the introduction of reactive moieties on the oxide surface of nanoparticles. In this study, silica coating of LiNbO3 nanoparticles was achieved through optimized microemulsion conditions, resulting in the formation of coated nanoparticles with carboxyl or azide reactive groups.
Article
Nanoscience & Nanotechnology
Ana-Mariia Pablo-Sainz-Ezquerra, Rachael Taitt, Florian Riporto, Yannick Mugnier, Pyria D. Mariathomas, Ronan Le Dantec, Mimoun Aouine, Christophe Geantet, Rajesh Ramanathan, Vipul Bansal, Yann Chevolot, Virginie Monnier
Summary: In this study, LiNbO3/Au and LiNbO3/Pt nanoparticles were synthesized by a simple and efficient method. The nanocomposites were prepared by introducing branched poly(ethyleneimine) as a linker, and the loading of metal on the surface of LiNbO3 was controlled by varying the volume of metal seeds dispersion added. The as-prepared composites showed enhanced catalytic activity compared to the separated counterparts, making them potential candidates for biomedicine applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Doyoung Kim, Gabrielle A. Mandl, Marta Balkota, Jimmy Vernaz, Song Huang, Samuel Constant, Pierre Maechler, Christine Dewolf, John A. Capobianco, Luigi Bonacina
Summary: The impact of surface coating on the interaction between lanthanide-doped upconverting nanoparticles (UCNPs) and the mucus barrier is studied using a patient-derived 3D cell culture model. The results demonstrate significant differences in residence time in mucus and mucociliary clearance for UCNPs with different coatings.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Adrian Gheata, Geoffrey Gaulier, Gabriel Campargue, Jeremy Vuilleumier, Simon Kaiser, Ivan Gautschi, Florian Riporto, Sandrine Beauquis, Davide Staedler, Dario Diviani, Luigi Bonacina, Sandrine Gerber-Lemaire
Summary: This study presents a nanoparticle-based drug delivery system that increases the efficiency of chemotherapy by accumulating drugs at specific target sites, reducing adverse side effects and patient resistance. The system utilizes photo-responsive nanomaterials to release drugs upon light irradiation. The results show promising capabilities for the treatment of mas.
ACS NANOSCIENCE AU
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
L. La Volpe, G. Campargue, G. Gautier, R. Le Dantec, Y. Mugnier, J-P Wolf, L. Bonacina
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)
(2021)
Article
Optics
D. Tabakaev, M. Montagnese, G. Haack, L. Bonacina, J-P Wolf, H. Zbinden, R. T. Thew
Summary: This study experimentally demonstrates the linear dependence of entangled two-photon absorption (ETPA) rate with the photon-pair rate and estimates the concentration-dependent ETPA cross section for Rhodamine 6G. It also investigates the signature of energy-time entanglement and polarization dependence in the ETPA fluorescence rate, showing a strong dependence of the signal on the interphoton delay.
