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Samayoa-Oviedo, Hugo Y. Postdoctoral Research Associate

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My research interest is focused on the study of fundamental study of the properties of ionic layers prepared by deposition of ions onto surfaces, a process known as ion soft landing. Ion soft landing enables the deposition of well-defined analytes on surfaces while preserving their structure and charge state. Interfaces prepared using ion soft-landing show increased electrochemical, catalytic, and optical properties which make this technique attractive for materials preparation or the fundamental studies of chemical species in the absence of impurities. Gaseous ions can be modified using gas phase techniques to create unique ionic species that would otherwise be elusive in the condensed phase. A major area of interest is the study of the chemical properties of fragment ions deposited onto surfaces to better understand the complex phenomena occurring at the solid/vacuum interface and their application in materials preparation.

Another research interest is the use of mass spectrometry to characterize reactive intermediates and study their stability using gas phase techniques. The transfer of analytes from the condensed phase into the gas phase using electrospray ionization provides an opportunity to observe and characterize reactive intermediates. Specifically, the high electric field present at the air-water interface in nanodroplets formed during electrospray can generate unique chemical species that would be challenging to stabilize in the condensed phase. Once under vacuum, these reactive species can be characterized using gas phase techniques to determine their chemical properties or being used for preparative mass spectrometry applications.

HR job title

  • Postdoctoral Research Associate