Researchers at Rice University have discovered a new way to make ultrasensitive conductivity measurements at optical frequencies on high-speed nanoscale electronic components. The researchers linked pairs of puck-shaped metal nanodisks with metallic nanowires and showed how the flow of current at optical frequencies through the nanowires produced “charge transfer plasmons” with unique optical signatures.
The push to continually increase the speed of microchip components has researchers looking at nanoscale devices and components that operate at optical frequencies for next-generation electronics. The new technique provides a way to measure the electrical transport properties of nanomaterials and structures at these extremely high frequencies.
The optical frequency conductance of most materials is not known. The new technique provides a useful and practical method to measure this property.