Basudev Lahiri, Glen Holland, Vladimir Aksyuk and Andrea Centrone
Photo-Thermal Induced Resonance (PTIR) technique combines the high lateral resolution of Atomic Force Microscopy (AFM) and the high chemical specificity of Infrared (IR) Spectroscopy to produce nanoscale chemical images. In this work, PTIR technique is used for the first time to image bright and dark plasmonic resonances of gold Asymmetric Split Ring Resonators (A-SRRs) with nanoscale resolution. Additionally, The PTIR technique is used to map the local infrared absorption enhancement at the nanoscale, revealing absorption hot spots with local enhancement factors up to 50 times at 100 nm lateral resolution, several times better than the diffraction limit of IR light.
Name: Basudev Lahiri
Sigma Xi member? NO
Advisor’s Name: Andrea Centrone
Division: 620
Laboratory: CNST
Office (Bldg./Office): 216/B119
Mail Stop: 6204
Phone: x5326
E-mail: basudev.lahiri@nist.gov
Postdoc category: CNST/UMD
Poster Category: Material Science