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Picosecond time resolution at the nanometer scale: combining ultrafast lasers with atomic force microscopy

Event Details

Event Dates: 

Thursday, March 2, 2017 - 2:00pm

Seminar Location: 

  • JILA X317

Speaker Name(s): 

Zeno Schumacher

Speaker Affiliation(s): 

McGill University, Montreal, QC
Seminar Type/Subject

Scientific Seminar Type: 

  • JILA Public Seminar

Event Details & Abstract: 

Understanding structure-function relations at the nanometer length scale is important for many fundamental as well as applied questions in material science, engineering and biology. Achieving picosecond time resolution with high spatial resolution is a key component. Atomic force microscopy (AFM) features atomic resolution, however it is lacking fast temporal resolution. The slow mechanics of the oscillating cantilever (<1MHz) is an apparent limiting factor. Our approach to high temporal resolution by using ultrafast laser systems in combination with ultra high vacuum AFM will be presented. The experimental results are supported by an analytical solution found for the limit of time resolution in fm-AFM.