CTQM Seminar Type:
- Related Seminar Series
Abstract, Event Details:
Thermal energy transfer and dissipation processes can influence the physical properties of matter, control the kinetics of chemical reactions, and trigger bio-molecular mechanisms in living organisms. One of the key challenges of physical sciences is therefore to understand how thermal phenomena arise and change on small scales. In this talk, I will present experimental routes to characterize local dissipation and thermal transport processes based on scanning probe microscopy and micro-electromechanical systems (MEMS) with integrated temperature sensors. Using several examples, I will first illustrate how scanning probe thermometry enables the real-space imaging of local Joule and Peltier effects in nanoscale devices down to 10 nm spatial and 10s of pico-Watt heat flux resolution [1,2]. Secondly, I will discuss thermal transport across nanoscale contacts and self-assembled alkane monolayers, ultimately demonstrating the validity of fundamental charge and heat transfer relations down to the atomic scale . Finally, I will provide an outlook on the future development of time-resolved thermal scanning probe microscopy and its unique potential to unravel local thermo-physical processes in quantum materials and molecular systems.
 F. Menges et al., Temperature mapping of operating nanoscale devices by scanning probe thermometry, Nature Communications 7(10874), 2016.
 F. Menges et al., Nanoscale thermometry by scanning thermal microscopy, Review of Scientific Instruments (87) 7, 074902, 2016.
 N. Mosso et al., Heat transport through atomic contacts, Nature Nanotechnology 12, 430-433, 2017.