The Center for Nanoscale Materials holds a regular biweekly colloquium on alternate Wednesday afternoons at 4:00 p.m. in Bldg. 440, Room A105/106. The goal of the series is to provide a forum for topical multidisciplinary talks in areas of interest to the CNM and also to offer a mechanism for fostering interactions with potential facility users. Refreshments will be served at 3:45.
Sept. 24, 2014
"Nanoplasmonics: Reaching Out to the Single Molecule," Reuven Gordon, University of Victoria, hosted by Jeff Guest
Abstract: Nanoplasmonics refers to the nanostructuring of metals to achieve enhanced light-matter interaction, down to the single-molecule level. This talk will highlight some of our research advances toward single-molecule (and other) technologies.
In particular, I will discuss reliable single-molecule Raman by using the antenna concept of directivity. I will show how we can grab hold of single proteins with light, unfold them, and detect single-protein binding with great sensitivity. Nanohole array surface plasmon resonance sensing with 10-7 refractive index unit resolution will be discussed. I will show how nanoplasmonics can improve THz sources and detectors, and can allow for enhanced second-harmonic generation. I will also discuss the quantum limits of plasmonics and show recent experimental evidence of the onset of these limits using third-harmonic generation. Finally, I will talk about large field enhancements that can be achieved by combining nanoplasmonics with permittivity-near-zero materials.
Nov. 5, 2014
Wenbin Lin, University of Chicago, hosted by Yugang Sun