The control problem in these systems is challenging, especially with gravity coupling and large deformations, because of inherent underactuation and the combination of lumped and distributed parameters of a nonlinear system.

The hallowed scene / Which others rave on, though they know it not.

Post Scriptum — Long as this letter has grown, I find it necessary to append a postscript ; if possible, a short one.

PT Au NRs with average length of 210 ± 10 nm and width of 34 ± 1 nm were prepared as previously described by Pérez-Juste et al., with minor modifications (see Experimental Section). 49 The purified PT Au NRs show a shape yield around 99%, (Figure S1A–C, Supporting Information ) and can be used as seeds after redispersion in 10 mM benzyldimethylhexadecylammonium chloride (BDAC).