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Chiral metamaterials thesis

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Preparation and characterization of novel chiral metasurfaces and their interaction with active materials. Doctoral thesis, Nanyang Technological University, Singapore. It is built in numerous crucial bio-molecules to rule their interactions. However, the natural existing chirality is mostly extremely weak that thus highly obstructs the detection and investigation of it. In order to address this problem, artificial stereoscopic chiral nanostructures, also named 3D chiral metamaterials have been proposed and showed huge chiral responses.

Chiral metamaterials

Chiral metamaterials thesis
Chiral metamaterials thesis
Chiral metamaterials thesis


Plum, Eric Chirality and metamaterials. Electromagnetic metamaterials are artificial media that derive novel properties from periodic structuring on the sub-wavelength scale. Here, the consequences of two-dimensional 2D and three-dimensional 3D chirality for the electromagnetic properties of metamaterials are investigated. The focus of this work is on new ways of achieving circular conversion dichroism, optical activity and negative refraction in highly symmetric structures. In the theoretical part of this work, fundamental constraints on polarization effects in planar metamaterials are established based on symmetry and energy conservation considerations. Through the experimental study of 2D chirality, I have first observed circular conversion dichroism i in non-chiral structures and ii due to 2D-chiral arrangement of non-chiral elements. At normal incidence circular conversion dichroism was seen for non-chiral split ring elements assembled into a 2D-chiral double-periodic array.

Plasmonic spectroscopy of biomacromolecules with chiral metamaterial

Metrics details. The control of the optical activity and ellipticity of a medium has drawn considerable attention due to the recent developments in metamaterial design techniques and a deeper understanding of the light matter interaction in composite metallic structures. Indeed, recently proposed designs of metaatoms have enabled the realisation of materials with unprecedented chiral optical properties e.
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