We derive a stability criterion for a catenoidal liquid bridge making contact angles γ 1 and γ 2 with two parallel plates. We show that for the case of equal contact angles γ 1 = γ 2 = γ the stability and instability sets are connected on the interval of admissible γ. We also give an example showing that for unequal contact angles, the family of stable catenoidal drops with one contact angle fixed can be disconnected with respect to the other angle. At the end of the paper we give a complete description of the stability and instability sets for various contact angles.
We are concerned with the stable liquid bridges joining two parallel homogeneous plates in the absence of gravity following the recent work of Finn and Vogel [7]. We prove the Carter conjec ture in the general case where the two contact angles can be different.
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