Gerhard Ertl Lecture & Award

Gerhard Ertl Lecture & Award

The Ertl Lecture Award was established in 2008 by the three Berlin universities (Humboldt University, Technical University and Free University) and the Fritz Haber Institute of the Max Planck Society and is awarded once a year. It commemorates former FHI Director Gerhard Ertl's Nobel Prize in Chemistry, which he received in 2007. The prize honours outstanding personalities and researchers in the field of catalysis where Ertl carried out exceptional research for many decades. The prize, sponsored by BASF, includes a one-week research stay at the participating Berlin institutions and a keynote lecture. The winner is typically announced in Spring, the lecture takes place around the December 10th, the anniversary of Ertl's Nobel Prize reception.

Speaker: Nikolai Paßler

Phonon Polaritons in Polar Dielectric Heterostructures

  • PC Online Talk
  • Date: Jun 18, 2020
  • Time: 03:00 PM (Local Time Germany)
  • Speaker: Nikolai Paßler
  • FHI Department PC
The field of nanophotonics aims at understanding and harnessing light-matter interaction in structures of dimensions far below the wavelength, enabling applications such as highly efficient sensing or all-optical integrated circuitry. The fundamental excitation driving nanophotonics is the surface polariton, arising in different types depending on the supporting material. A promising candidate for applications at infrared frequencies is the surface phonon polariton (SPhP) supported by polar crystals. However, a SPhP on a single polar crystal possesses several limitations that hinder the application in nanophotonic technologies.This work implements layered heterostructures built from various materials as a versatile platform for phonon polariton nanophotonics, overcoming the limitations of a conventional SPhP. By studying a variety of different polar crystal heterostructures, novel polariton modes with intriguing characteristics are discovered, such as ultra-thin film modes with immense field enhancements, strongly coupled polaritons at epsilon-near-zero frequencies, and waveguide modes with polariton-like properties. [more]
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