Functional Nanostructured Plasmonic Materials

Plasmonic crystals fabricated with precisely controlled arrays of subwavelength metal nanostructures provide a promising platform for sensing and imaging of surface binding events with micrometer spatial resolution over large areas. Soft nanoimprint lithography provides a robust, cost‐effective meth...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2010-03, Vol.22 (10), p.1102-1110
Main Authors: Yao, Jimin, Le, An-Phong, Gray, Stephen K., Moore, Jeffrey S., Rogers, John A., Nuzzo, Ralph G.
Format: Article
Language:English
Subjects:
Arrays
Biosensing Techniques
Biosensors
Crystallization
Crystals
Devices
Gold - chemistry
MATERIALS SCIENCE
Micrometers
Monolayers
Nanocomposites
Nanodevices
Nanoimprinting
Nanomaterials
Nanostructure
Nanostructures - chemistry
Nanostructures - ultrastructure
Plasmonics
Sensors
Sulfhydryl Compounds - chemistry
Surface plasmon resonance
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Summary:Plasmonic crystals fabricated with precisely controlled arrays of subwavelength metal nanostructures provide a promising platform for sensing and imaging of surface binding events with micrometer spatial resolution over large areas. Soft nanoimprint lithography provides a robust, cost‐effective method for producing highly uniform plasmonic crystals of this type with predictable optical properties. The tunable multimode plasmonic resonances of these crystals and their ability for integration into lab‐on‐a‐chip microfluidic systems can both be harnessed to achieve exceptionally high analytical sensitivities down to submonolayer levels using even a common optical microscope, circumventing numerous technical limitations of more conventional surface plasmon resonance techniques. In this article, we highlight some recent advances in this field with an emphasis on the fabrication and characterization of these integrated devices and their demonstrated applications. Plasmonic crystals that offer exceptional analytical power along tunable wavelengths present a promising platform for the sensing and imaging of surface binding events with high spatial resolution and submonolayer sensitivity. The design, fabrication, and characterization of these devices and their applications in biochemical sensing and imaging are briefly reviewed here. The figure shows a transmitted white light plasmonic image of 1‐octadecanethiol lines printed on the Au surface of a full 3D plasmonic crystal.
ISSN:0935-9648
1521-4095
1521-4095
DOI:10.1002/adma.200904097