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Code: TOP1	Time Slot/Poster Number: 8:30 - 9:15 am	Session: Tuesday Plenary I
Attosecond High Harmonic Spectroscopy to Observe Molecular Motion
David Villeneuve
National Research Council, Ottawa, Canada

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Summary
High harmonic emission from aligned molecules contains information on the electronic structure of the molecule, and is now called high harmonic spectroscopy. The amplitude, phase and polarization of the xuv emission can be recorded over a large range of photon energies. It is similar to time resolved photoelectron spectroscopy, but has a number of advantages. I will show how high harmonic spectoscopy can follow a unimolecular reaction in real time, with both femtosecond and attosecond time resolution.

Code: TOP1	Time Slot/Poster Number: 9:15 - 10:00 am	Session: Tuesday Plenary I
Transforming SERS into a dependable platform for ultra-sensitive molecular sensing
Martin Moskovits^{1, 3}; Seungjoon Lee²; Brian Piorek²; Gary Braun^{1, 3}; Xuegong Deng³; Carl Meinhart^{1, 2}; Norbert Reich¹; Thomas Tombler³
¹University of California, Santa Barbara, Santa Barbara, CA; ²Spectra Fluidics, Inc., Goleta, CA, USA; ³API Technologies, Somerset, NJ, USA

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Summary
Although Surface-enhanced Raman (SERS) was discovered by Rick Van Duyne in 1977 yet a commercially-viable SERS sensor has been slow to appear. This is because (i) SERS is primarily a plasmonic phenomenon which is extremely sensitive to nano-geometry, hampering the development of reproducible substrates; (ii) unfunctionalized gold and silver exhibit weak and unspecific surface chemistry making adsorption susceptible to local conditions. (iii) The false view persists that the SERS enhancement mechanism is not well understood, undermining the development of practical applications of SERS. Three promising SERS systems will be described as robust analytical platforms employing SERS.