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The 63rd Photo-molecular Science Forum

Lecture Title "Chirality and nonlinear chiroptical effects in plasmonic nanostructures"
Date Friday 25 August 2017 15:00 to 16:00
Lecturer Ventsislav Valev (Reader, University of Bath)
Place

Institute for Molecular Science, Research Building, Seminar Room, #201

Summary

Throughout the 19th and 20th century, chirality has mostly been associated with chemistry. However, while chirality can be very useful for understanding molecules, molecules are not so well-suited for understanding chirality. Indeed, the size of atoms, the length of molecular bonds and the orientations of orbitals cannot be varied at will. It is therefore difficult to study the emergence and evolution of chirality in molecules, as a function of geometrical parameters. By contrast, chiral metal nanostructures offer an unprecedented flexibility of design. Modern nanofabrication allows chiral metal nanoparticles to tune the geometric and optical chirality parameters, which are key for properties such as negative refractive index and superchiral light.
In this seminar, we will discuss a range of chiral nano/meta-material geometries. The advantages and disadvantages of nonlinear chiroptical techniques will be discussed and a relationship between superchiral light and second harmonic generation will be established.

Speaker: Ventsislav Valev (Reader, University of Bath)

Other

Contact: Hiromi Okamoto & Kenji Ohmori