Maxed out Microwave Microscopy

Max Sparey, our fellow in Linz, has worked with colleagues at Keysight Technologies Austria and the Institute of Biophysics in Johannes Kepler University, plus our SENTINEL partner the University of Tokyo, to produce this article in the Royal Society of Chemistry’s Nanoscale Advances

Here the authors show how microwave microscopy can be used to probe local charge transfer reactions with unprecedented sensitivity, visualizing surface reactions with only a few hundred molecules involved. While microwaves are too fast under classical conditions to interact and sense electrochemical processes, this is different at the nanoscale, where their heterodyne microwave sensing method allows for highly sensitive local cyclic voltammetry (LCV) and local electrochemical impedance spectroscopy (LEIS).

An excellent piece of work. Huge congratulations, Max!