(
a) The specific heat capacity
cp(
T) of water confined in the narrowest SiO
2 pore reported in Nagoe
et al. (
b) By integrating the latter function
cp(
T), the energy of nanoconfinement is evaluated as

. (
c) The inverse function
T=
f−1(Δ
h) provides the temperature corresponding to a given energy Δ
h; hence, it can be used in combination with the experimental results from Chen
et al. where the diffusion coefficient (in narrow SiO
2 pores) is given as a function of
T. (
d) The ratio between the diffusion
Dc of fully confined water and the bulk diffusion
Db of water,
DC/
DB=
g(Δ
h), is reported and the corresponding values for all the considered configurations are shown, where
g(Δ
h)<0.15.