Journal of Physical Chemistry C
Journal of Physical Chemistry C
5 years ago

Active Control over the Interplay between the Dark and Hidden Sides of Plasmonics Using Metallodielectric Au–Ge2Sb2Te5 Unit Cells

Active Control over the Interplay between the Dark and Hidden Sides of Plasmonics Using Metallodielectric Au–Ge2Sb2Te5 Unit Cells
Nezih Pala, Arash Ahmadivand, Burak Gerislioglu
We present a systematic study for a metallodielectric nanoplasmonic unit cell to support both Fano and toroidal resonances in the near-infrared region. Using full electromagnetic computations, we show that a combination of phase-changing and metallic materials allows for designing a unit cell with different spectral responses at different phases of the phase-changing material (here Ge2Sb2Te5 or simply GST). This phenomenon of switching between toroidal response and Fano resonant mode is confirmed using both finite-element and finite-difference time-domain methods. Having active control over the interplay between narrow and tunable Fano and toroidal modes at different wavelengths with fast transition would allow for developing efficient and practical photonic devices for communication and imaging applications.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b05890

DOI: 10.1021/acs.jpcc.7b05890

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.