• An In-Person-Only Event
  • Technical Conference:  07 – 12 May 2023
  • The CLEO Hub: 09 – 11 May 2023

Epsilon-Near-Zero Optics: Recent Advancement and Development

Symposium Organizers

Howard Lee, Department of Physics and Astronomy, University of California, Irvine, USA

Andrea Marini, The University of L'Aquila, Italy


The optical response of zero refractive index or epsilon-near-zero (ENZ) materials has been a topic of significant interest since it was first supposed by Nader Engheta and his colleagues in 2006. The electromagnetic field inside media with near-zero permittivity has been shown to exhibit unique and extreme optical properties, for instance, strong electromagnetic wave confinement, enhanced quantum emission, non-reciprocal magneto-optical effects, and abnormal nonlinearity. Recent studies have shown that realistic materials such as highly doped conducting oxide/metallic nitride thin films and metamaterials composed of nanoscale multilayer stacks of metals and dielectrics could exhibit these extreme ENZ properties. These materials show significant promise for the development of emerging ultrafast communication, optical imaging, bio/optical sensing, and energy harvesting applications.


This special symposium will review the latest developments, applications, and current challenges in the area of ENZ photonics based on different optical materials and platforms. Novel optical materials, structural configurations, and advanced optical science/functionality of zero-index/ENZ photonic structures for applications on nonlinear optics, quantum optics, optical imaging, energy harvesting, and ultrafast integrated ENZ photonic devices will also be discussed.


Invited Speakers

Igal Brener, Sandia National Laboratories, USA

Humeyra Caglayan, Tampere University, Finland

Nader Engheta, University of Pennsylvania, USA

Marcello Ferrera, Heriot-Watt University, UK 

Nathaniel Kinsey, Virginia Commonwealth University, USA

Eric Mazur, Harvard University, USA

Jeremy Munday, University of California, Davis, USA

Vladimir Shalaev, Purdue University, USA