Understanding the dynamics of light-meta structure interactions using skin-depth engineering (Conference Presentation)

Nitish Chandra; Natalia Litchinitser

doi:10.1117/12.2508704

8 March 2019 Understanding the dynamics of light-meta structure interactions using skin-depth engineering (Conference Presentation)

Nitish Chandra, Natalia Litchinitser

Author Affiliations +

Proceedings Volume 10928, High Contrast Metastructures VIII; 1092805 (2019) https://doi.org/10.1117/12.2508704
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Traditionally, geometrical factors have not played an important role in determining the distribution of current across conducting boundaries. Typically, the classical skin depth expression is used to estimate currents within the volume. We have developed a novel geometry-based framework which describes current distributions within the volume of structures which allows us to engineer skin depth using boundary shapes. A more accurate knowledge of current densities is an important degree of freedom to design and analyze meta-structures and their interactions. Our approach is grounded in a rigorous analysis of electromagnetic wave scattering from shell structures for which the importance of geometrical parameters in the expressions for skin depth to accurately describe interactions has been confirmed. Starting from Maxwell’s equations, we have analyzed the temporal dynamics of electromagnetic interactions with meta-structures and their relationship to vector potentials. Individual wavelength or subwavelength sized meta-structures can be designed to localize the incident electromagnetic radiation and create a change in the local constitutive relations. Having an accurate determination of the current distribution within the volume of scattering structures plays an important role in designing and determining the effective constitutive parameters of 2D and 3D metamaterials. Combinations of materials with custom geometries suggest that this kind of skin depth engineering can lead to new families of linear and non-linear meta-atoms impacting imaging, harmonic generation, and the design of antennas and their shielding.

Conference Presentation

Citation Download Citation

Nitish Chandra and Natalia Litchinitser "Understanding the dynamics of light-meta structure interactions using skin-depth engineering (Conference Presentation)", Proc. SPIE 10928, High Contrast Metastructures VIII, 1092805 (8 March 2019); https://doi.org/10.1117/12.2508704

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Skin

Electromagnetic radiation

Electromagnetic scattering

Scattering

Antennas

Electromagnetism

Harmonic generation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years