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Scientists have visualized the electronic structure in a microelectronic device for the first time, opening up opportunities for finely tuned, high-performance electronic devices. Physicists from the University of Washington and the University of Warwick developed a technique to measure the energy and momentum of electrons in operating microelectronic devices made of atomically thin — so-called 2D — materials.

In a paper published online July 23 in the journal Nature, a UW-led research team reports that the 2-D form of tungsten ditelluride can undergo “ferroelectric switching.” Materials with ferroelectric properties can have applications in memory storage, capacitors, RFID card technologies and even medical sensors — and tungsten ditelluride is the first exfoliated 2-D material known to undergo ferroelectric switching.