Fig. 8.The static electric dipole longitudinal polarizabilityazz andazz;diff for the LiF molecule embedded in (a) harmonic confining potential (b) helium nanotubes (c) carbon
nanotubes. Theazz of the isolated LiF molecule is equal to 8.62 au. The value ofazz;diff is calculated as follows: azz;diff ¼azzðAB@ðn;nÞNTÞazzððn;nÞNTÞ, where NT denotes
helium and carbon nanotubes for panels (b) and (c) respectively