In this two-presentation webinar, Nanoelectrics at Electrified Solid/Liquid Interfaces, our speakers discuss:
View the Program Notes, below, for more detailed presentation information and timestamps.
Michael Nellist, Ph.D. (University of Oregon) explores how the pursuit of new insights in solar water splitting research require unique experimental approaches — including using nanoelectrode AFM-SECM probes, scanning the surface of at water splitting photoanodes, and making in-operando local surface potential measurements. This part of the webinar also explores interfacial charge transfer at the semiconductor-catalyst interface – an issue that is central for solar water splitting yet has been poorly understood. In this presentation, we will discuss fundamental aspects and capabilities of the probes used. To accomplish this, the speaker reviews:
Moreover, the versatility of the technique is highlighted by comparing surface potentials of CoPi-decorated hematite and bismuth vanadate photoelectrodes.
Dr. Teddy Huang (Bruker) explores why nanoscale electrical measurements with AFM are common in air, yet extremely challenging in liquid, as well as the new capabilities for nanoelectrical characterization in liquid provided by Bruker's AFM instruments.
At Bruker, we recently developed insulated nanoelectrode AFM-SECM tips, which provide the first and only commercial solution for nanoscale electrical characterization in liquid. In addition, we have also introduced an extensive set of new electrical Data Cube modes that provide an entire force and electrical spectrum at every pixel.
This webinar demonstrates how the combination of these two innovations enables a whole range of new electrical measurements in liquid, including in situ piezoelectric response, conductivity, Kelvin Probe mapping, and benefits for research in solar water splitting. We show data addressing applications ranging from Li-ion batteries, electrocatalysis, to semiconductors and bioelectricity.
This webinar was presented on: June 7, 2018
Dr. Teddy Huang
Staff Development Applications Scientist, Bruker Nano Surfaces
Ph.D. student, University of Oregon