Piezoelectricity in a 2D Semiconductor | Newswise: News for Journalists

Credit:

To maximize piezoelectric coupling, electrodes (yellow dashed lines) were defined parallel to the zigzag edges (white dashed lines) of the MoS2 monolayer. Green and red colors denote the intensity of reflection and photoluminescence respectively.

« Piezoelectricity in a 2D Semiconductor

Credit:

To measure in-plane piezoelectric stress, an MoS2 film was suspended on HSQ posts and clamped by two Au electrodes. When the film was indented with a scanning AFM probe, the induced stress changed the load on the cantilever, which was observed by the deflection of a laser beam.

« Piezoelectricity in a 2D Semiconductor

Credit: Photo by Roy Kaltschmidt, Berkeley Lab.

Xiang Zhang directs Berkeley Lab’s Materials Sciences Division.

« Piezoelectricity in a 2D Semiconductor

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