Optical Metamaterials by Block Copolymer Self-Assembly
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Beschreibung
Metamaterials are artificially designed materials engineered to acquire their properties by their specific structure rather than their composition. They are considered a major scientific breakthrough and have attracted enormous attention over the past decade. The major challenge in obtaining an optical metamaterial active at visible frequencies is the fabrication of complex continuous metallic structures with nanometric features.
This thesis presents the fabrication and characterization of optical metamaterials made by block copolymer self-assembly. This approach allows fabrication of an intriguing and complex continuous 3D architecture called a gyroid, which is replicated into active plasmonic materials such as gold. The optical properties endowed by this particular gyroid geometry include reduction of plasma frequency, extraordinarily enhanced optical transmission, and a predicted negative refractive index. To date, this is the 3D optical metamaterial with the smallest features ever made.
Metamaterials are artificially designed materials engineered to acquire their properties by their specific structure rather than their composition. They are considered a major scientific breakthrough and have attracted enormous attention over the past decade. The major challenge in obtaining an optical metamaterial active at visible frequencies is the fabrication of complex continuous metallic structures with nano metric features.
This thesis presents the fabrication and characterization of optical metamaterials made by block copolymer self assembly. This approach allows fabrication of an intriguing and complex continuous 3D architecture called a gyroid, which is replicated into active plasmonic materials such as gold. The optical properties endowed by this particular gyroid geometry include reduction of plasma frequency, extraordinarily enhanced optical transmission, and a predicted negative refractive index. To date, this is the 3D optical metamaterial with the smallest features ever made.
Nominated as an outstanding Ph.D. thesis by the University of Cambridge, UK Includes detailed descriptions of the fabrication process A cross disciplinary work that combines polymer science, nanotechnology, plasmonics and materials engineering A fascinating meta material structure is described from the fabrication process to real practical applications Includes supplementary material: sn.pub/extras
Autor*in
Stefano Salvatore
Themen in »Optical Metamaterials by Block Copolymer Self-Assembly«
3D Optical Metamaterial Block Copolymer Metamaterial Block Copolymer Self-assembly Enhanced Transmission Gyroid Structure Metamaterial Sensor Nanostructured Metamaterial Self-assembled Metamaterial Stretchable Metamaterial