Today, high-tech applications in optoelectronics work with ultrafast electrical oscillations, reaching frequencies up to the terahertz range. A team from the Universities of Bayreuth and Melbourne has now succeeded in developing a microscope that records videos of these oscillations. The glow of semiconductor nanocrystals makes visible the previously hidden electric fields that drive ultrafast electrical components. The researchers present their discovery in the journal Light: Science & Applications. The microscope could be used to observe the driving fields of nanocircuits in operation.
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