The name is absent

the grand free energy,

<5Ω _ Γ JΩ ∂p_a(r) ∙sr~> f 5Ω ∂u_a(ι
δH = ½-'J δp_a(r) ∂H ^{dr +} ^J δu_a(r) ∂H
a     ∣x∕              _gi        ∖ /

(6.33)

or

dV∞^t(r)

~4H~^dr-

(6.34)

In one dimension

dVS^κ‰)
dH ’

(6.35)

where

V_a^at(z) = V^^l"^sβz') + V'^xt∙^s2(H - z

(6.36)

V^^xt'^sl is the external potential on segment a due to the surface at z = 0 and
ɪ/eæt,s² j_{ue to} tj_{ιe 0}t]_{ιer sur}f_ace at z = H. If both these surfaces are similar, i.e.
V^≈^rf,sl (z) = ve^χt>^s2(}/ — _zj _and density profiles of the grafted chains at the two sur-
faces are symmetric, then this functional derivative can be expressed as [246]

g-ΛΣA(√*⅛‰.
α

(6.37)

(6.38)