Development of an ultra-low-loss platform for molecular sensing based on dielectric nanoantennas
Abstract
Development of an ultra-low-loss platform for molecular sensing based on dielectric nanoantennas The aim of this proposal is to develop a new platform for molecular screening based on surface-enhanced Raman and surfaceenhanced fluorescence spectroscopies, utilizing not metallic (plasmonic) but dielectric nanoantennas. The switch from metallic to dielectric systems brings with it the advantage of ultra-low heat generation due to the absence of optical loss mechanisms, hence avoiding molecular changes of the agents to be sensed. Additional improvements are absence of heat-induced damage to the antenna allowing higher illumination intensities, and crucially the utilization of the same antenna geometry and surface functionalization sites both for Raman and fluorescence spectroscopies. Our work spans fundamental studies, development of surface chemistry protocols for agent binding, and proof-of-concept demonstrations using a variety of relevant target molecules.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 23, 2016
- Source ID
- N000141612288
Entities
People
- S. Maier
Organizations
- Imperial College London
- Office of Naval Research
- United States Navy