We fabricated large-area stacked complementary plasmonic crystals (SC PlCs) by employing ultraviolet nanoimprint lithography. The SC PlCs were made on silicon-on-insulator substrates consisting of three layers: the top layer contacting air was a perforated Au film, the bottom layer contacting the buried oxide layer included an Au disk array corresponding to the holes in the top layer, and the middle layer was a Si photonic crystal slab. The SC PlCs have prominent resonances in optical wavelengths. It is shown that the fabricated PlCs were precise in structure and uniform in their optical properties. We examined the photoluminescence (PL) enhancement of monolayer dye molecules on the SC PlC substrates in the visible range and found large PL enhancements of up to a 100-fold in comparison with dye molecules on nonprocessed Si wafers.
We fabricated large-area stacked complementary plasmonic crystals (SC PlCs) by employing ultra-violet (UV) nanoimprint lithography (NIL). The SC PlCs was made on silicon on insulator (SOI) substrates, consisting of three layers: the top layer contacting air was perforated Au film, the bottom layer contacting buried oxide (BOX) layer included Au disk array corresponding to the holes in the top layer, and the middle layer was Si photonic crystal slab. The SC PlCs have prominent resonances in the optical wavelengths. It is shown that the fabricated PlCs were precisely made in structure and well uniform in the optical properties. We have examined photoluminescence (PL) enhancement of dye molecules on the SC PlC substrates in the visible range and found large enhancement up to 100-fold in comparison with the dye molecules on non-processed Si wafers.
A new class of plasmonic crystals is introduced,
which are composed of stacked complementary nano-structures
of metal. The plasmonic crystals
have composite eigen modes of enhanced rotatory
electromagnetic components. The eigen modes emerge in the
stacked complementary nano-structures with
proper distance between the two complementary layers
including metal.
The potential in application as plasmonic polarizers
of subwavelenth thickness is also discussed.
As a typical uniaxial media, stratified metal-dielectric metamaterials (SMDMs) are addressed in my talk. SMDMs have diverse features: (I) Coexistence of metallic and transparent dielectric properties in SMDMs. (II) Nearly zero refractive index just above the effective plasma frequency of metallic components. This feature has enabled to design the ultracompact wave plates. (III) In case of the small ratio of metal, the transmission windows emerge which are often connected to the optical magnetism. In some particular cases, negative refractive index is also found. (IV) When the metal part is dominant, SMDMs can have the very large refractive index.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.