Figure 3. BAM images of the QD monolayers at water-air interface by increasing surface pressures from 0.1mN/m (a) to 35mN/m (d).

From

Monolayer Topography of Quantum Dots at the Interfaces

Daria O. Solovyeva, Ilya S. Zaitsev, Sergei Yu. Zaitsev

Nanoscience and Nanotechnology Research. 2013, 1(2), 13-16 doi:10.12691/nnr-1-2-1