Magnetoplasmonic chiral nanoantennas for magnetically-tunable molecular processes

SNIC 2018/4-38


SNAC Small

Principal Investigator:

Esteban Pedrueza villalmanzo


Göteborgs universitet

Start Date:


End Date:


Primary Classification:

10302: Atom and Molecular Physics and Optics



Chiral (enantioselective) chemical synthesis has a paramount importance in medicinal chemistry and pharmacology. Chiral optical (nanoplasmonic) antennas can enhance the interaction of the chiral molecules, placed in the direct proximity to the antennas, with the circularly polarized light. This leads to a possibility of highly sensitive enantiomer sensing or nanoantenna-controlled enantiomeric resolution in the chiral synthesis. For such applications both the chiroptical far- and the near-field responses of plasmonic nanoantennas are of major importance. Numerical modeling, particularly Nanophotonic Maxwell solver Lumerical, allows us to characterize the optical properties of the chiral nanoantennas and to predict the enhanced optical near-fields, responsible for the intense interaction with the nearby molecules. This project is focused on the numerical simulations of the optical properties of the metal nanoantennas and their near-field response. We perform simulations of fundamental plasmonic properties of metal-like material states and laser-matter interaction, we investigate numerically optically chiral metallic and dielectric nanoantennas for designing near-fields with super-chiral properties in order to control molecular chirality by near fields. We investigate multi-layered nanostructures with ultra-thin about 0.5 nm layers of magneto-optical materials that allow easy transverse magnetization of the antenna and provide outstanding tunability of nanoantanna response by low external magnetic field. We investigate numerically strong coupling regime of chromophores with plasmonic nanoantenna in order to design nanostructures for active control over molecular kinetic reactions by plasmons. These works are presented at various conferences and we submitted an article to be published in Optica journal, where we indicated our computational project on Hebbe [1-5]. [1] E. Pedrueza Villalmanzo, V. Saavedra, E. Smetanina, M. Keshavarz Hedayati, M. Abdelaziz, M. Elbahri, T. Shegai, J. Andreasson, A. Dmitriev, "Polaritonic chemistry on photo-switchable molecules with plasmonic nanoantennas in the strong coupling regime", London Plasmonics Forum, London, United Kingdom, 7 June (2018) [2] E. Smetanina, P. Gonzalez de Alaiza Martinez, I. Thiele, B. Chimier, A. Bourgeade, G. Duchateau "Optical Bloch Equations for modeling of the femtosecond laser-induced electron dynamics in dielectrics", "COFIL 2018" conference, Geneva, Switzerland, 25-29 June (2018) [3] E. Smetanina, "Magnetoplasmonics: magnetic control of light in the nanoscale landscapes", International Conference on Metamaterials and Nanophotonics “METANANO 2018”, Sochi, Russia, 17 - 21 September (2018) [4] E. Smetanina, P. Gonzalez de Alaiza Martinez, I. Thiele, B. Chimier, A. Bourgeade, G. Duchateau “Modeling femtosecond laser-induced electron dynamics in dielectrics by means of Optical Bloch Equations”, International Conference on Ultrafast Optical Science (UltrafastLight-2018) Moscow, Russia, 01-05 October (2018) [5] I. Thiele, B. Zhou, A. Nguyen, E. Smetanina, R. Nuter, K. J. Kaltenecker, P. González De Alaiza Martínez, J. Déchard, L. Bergé, P. U. Jepsen, and S. Skupin, ‘Terahertz emission from laser-driven gas-plasmas: a plasmonic point of view’ submitted to Optica jornal (2018)