The observed fluctuations of the membrane do not destabilize it.
I also have questions and comments for acceptance. The list of comments is as follows. In Page 1, Lines 27–28, the author described “the experimental set-up was improved …”. However, the authors have already reported the measurements of bending elasticity using stroboscopic illumination in author’s previous papers (such as Genova et al., J. Optoelectro. Adv. Mat., 2005). Describe how the experimental set-up was improved in this paper more precisely.