The Malen LAboratory
 
Jonathan A. Malen 
(Principal Investigator)
The Malen Laboratory experimentally studies energy transport and conversion at the nanoscale.  Jonathan A. Malen is the Principal Investigator and an Assistant Professor in the Mechanical Engineering Department at Carnegie Mellon University.  Our current investigations include nanoscale thermal transport in organic-inorganic hybrid materials (e.g. nanocrystal arrays and self assembled monolayers) and nanostructured semiconductors (e.g., Gallium Nitride LEDs) for energy conversion applications.  With high speed laser measurements we are able to resolve thermal conductivity of nanometer films and thermal resistance at interfaces that span just a few atoms.    We can also use high frequency laser heating to sort phonon (quantized vibrations in crystals that carry heat) contributions to thermal conductivity based on their mean free paths.  http://www.cmu.edu/me/shapeimage_4_link_0
High frequency laser heating of solids generates quasi-ballistic phonon transport that enables us to sort phonon contributions to thermal conductivity based on their mean free paths.