Fig. 3: Mechanical properties of multilayer hBN bubbles.
From: Strong and Localized Luminescence from Interface Bubbles Between Stacked hBN Multilayers
a Calculated aspect ratio a as a function of bubble radius for various values of the geometry-dependent bending rigidity. The shaded area indicates the region magnified in b where the aspect ratio is an approximately linear function of radius. b Experimentally measured aspect ratio of hBN/hBN multilayer bubbles (solid circles) as a function of the bubble radius and the multilayer thickness (represented by the symbol color). The solid lines are theoretically calculated values shown in a. c The experimentally determined bending rigidity. Error bars represent one standard deviation above and below the mean or are smaller than the symbols and the solid red curve is a guide to the eye. Two dashed curves show \(\sim {t}^{3}\) and ~t dependency, which correspond to the case of an elastic plate and multilayers with no interlayer interaction, respectively. The schematics show atomic configurations for each case with different interlayer interaction. The color gradient along the y axis corresponds to bending rigidity in (a).
