Juan Fernández de la Mora

de la Mora Ion Mobility, Mass Spectrometry and Nucleation Tools

About the Presenter:

Born in Madrid, 1952, Juan Fernández de la Mora studied Aeronautical Engineering (1975) and worked as an engineer at the aerodynamics department of the company Construcciones Aeronáuticas (Madrid, 1975, 1977). He received a Ph.D. at Yale under Prof. D.E. Rosner (Engineering and Applied Sciences, 1981), joined the UCLA group of Prof. Sheldon Friedlander as a Postdoctoral Scholar (1981), and has been on the Mechanical Engineering faculty at Yale since 1981. His core field of interest is Fluid Mechanics, with applications to nanoparticle separation by inertia, mobility and mass spectrometry. He has contributed to various nanoparticle separation, detection, ionization and atomization instruments, including DMAs, CNCs, impactors, and electrosprays. He has received the K. Whitby and the D. Sinclair Awards from the AAAR, and is a corresponding member of the Spanish Academy of Engineering.

Full Presentation:


Substantial measurement developments have taken place recently, driven by interest in new particle formation in the atmosphere, with ion mobility, mass spectrometry and condensation nucleation instrumentation having as a result greatly developed. There is a need to measure detailed rates of condensation, evaporation, charge evaporation, charge exchange, etc. Also to develop better and faster CPCs (for neutral and charged particles down to molecular sizes), to increase instrument resolving power, to develop improved size standards in the diameter range above 2 nm, to better interpret mobility information for spherical and non-spherical particles. Biological nanoparticles have also contributed substantially to some of these areas, being used as size and shape standards, while also offering promising biotech applications. A number of areas continue benefitting from gradual merging of physicochemical knowledge available for small molecules with more macroscopic information conventionally used in aerosol work. This unification process is, however, often difficult. Progress and obstacles in these various topics will be illustrated with recent studies at Yale and elsewhere.