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ABSTRACT
We investigate the inter-particle interactions of weak homeotropic anchoring when electric field is applied parallel to far-field director in a homogeneous nematic cell. Two particles interact with the dipole–dipole and quadrupole–quadrupole interactions in the cell. A model of far-field solution dependent on the cell gap and the electric field with weak anchoring is considered to explain the experimental results. The effective radius is introduced to adapt the anchoring strength effect using the radius (R) and a coefficient
. The model was experimentally proved with varying electric field and cell gap and it was reasonable for weak electric field. The coefficient
was measured to be
and
for the dipole–dipole and quadrupole–quadrupole interactions, respectively, within the experimental range of the weak electric field. The anchoring strength was calculated as ~
GRAPHICAL ABSTRACT
Disclosure statement
No potential conflict of interest was reported by the authors.
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