April 2020: Book on Metasurfaces

Karim Achouri and Christophe Caloz are in the process of finalizing the first textbook on metasurfaces. The book deals with all the aspect of metasurfaces across the electromagnetic spectrum from microwaves to optical frequencies. It is expected to be released by Wiley by the end of the year.

The book is organized in the following chapters:

1. Introduction

2. Electromagnetic Properties of Materials

3. Metasurface Modeling

4. Susceptibility Synthesis

5. Scattered-Field Analysis

6 Fabrication

7. Applications


February 2020: "Electromagnetic Perspectives"

Christophe Caloz launches in the IEEE Antennas and Propagation Magazine the new column "Electromagnetic Perspectives", and inaugurates it with a paper entitled "Electromagnetic Chirality, Part I: the Microscopic Perspective", which will be followed by "Electromagnetic Chirality, Part II: the Macroscopic Perspective" in the next issue of the journal.

"Electromagnetic Perspectives", highlighted in the editorial of the first 2020 issue of the magazine, intends to disseminate knowledge about electromagnetics and electrodynamics via paths that deviate from common routes and hence demystify concepts reputed of difficult access, by emphasizing historical contextualization, maximal simplification, pedagogical creativity and first-principle methodology.

The two-part paper "Electromagnetic Chirality", co-authored by Ari Sihvola, presents a bottom-up description of electromagnetic chirality, discovered 200 years ago by Arago and Biot and recently revived with metamaterials, from the microscopic level, characterized by particle polarizabilities, to the macroscopic level, characterized by medium susceptibilities.

January 2020: New Era of Magnetless Nonreciprocity

Our group introduced the concept of magnetless nonreciprocal metamaterials ten years ago [T. Kodera, D. L. Sounas, and C. Caloz, Appl. Phys. Lett., 2011]. Since then, this research topic has exploded in both the engineering and physics communities, with hundreds of related papers being published every month, including our critical perspective in [C. Caloz et. al, Phys. Rev. Appl., 2018].

The very recent conjunction of magnetless nonreciprocity and metasurface technologies has opened up a new research era where magnetless nonreciprocity is being combined with temporal and spatial wave spectra transformations.

October 2019: OSA Fellowship

Christophe Caloz was elected Fellow of the Optical Society of America (OSA), as part of the OSA Fellow Class 2020, with citation "for pioneering contributions to electromagnetic metamaterials and sustained leadership in bridging the gap between microwave and photonics technologies".

"The number of Fellows is limited by the Society's bylaws to be no more than 10% of the total OSA Membership and the number elected each year is limited to approximately 0.5% of the previous year's membership total. Currently, only about 50% of the nominees are elected annually."

See interview here.

September 2019: 1st Prize at Metamaterials' 2019

Zoé-Lise Deck-Léger wins the First Prize at the Student Paper Competition of Metamaterials' 2019, the 13th International Congress on Artificial Materials for Novel Wave Phenomena, in Rome, for a paper entitled "Comprehensive Description of Spacetime Crystal Bandgaps​ ".

An extension of this work has been recently published as a research article in Advanced Photonics under the title "Uniform-Velocity Spacetime Crystals". This article (26 pages) is expected to become a reference in the emerging field of spacetime metamaterials.

“Never, never, never give up.”

Winston Churchill