TY - JOUR
T1 - Casimir effect in fluids above the isotropic-lamellar transition
AU - Uchida, Nariya
PY - 2001/11/19
Y1 - 2001/11/19
N2 - We study fluctuation-induced interaction in confined fluids above the isotropic-lamellar transition. At an ideally continuous transition, the disjoining pressure has the asymptotic form Π(d→∞)≈−CkBTq20/d, where d is the interwall distance, q0 is the wave number of the scattering peak, and C = 1/4π in the strong anchoring limit. The long-rangedness is enhanced due to continuous distribution of soft modes in the q space. An unconventionally strong Casimir force with a range of several lamella thicknesses is realistic above the transition. We also find an oscillatory force profile near a surface-induced transition.
AB - We study fluctuation-induced interaction in confined fluids above the isotropic-lamellar transition. At an ideally continuous transition, the disjoining pressure has the asymptotic form Π(d→∞)≈−CkBTq20/d, where d is the interwall distance, q0 is the wave number of the scattering peak, and C = 1/4π in the strong anchoring limit. The long-rangedness is enhanced due to continuous distribution of soft modes in the q space. An unconventionally strong Casimir force with a range of several lamella thicknesses is realistic above the transition. We also find an oscillatory force profile near a surface-induced transition.
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U2 - 10.1103/PhysRevLett.87.216101
DO - 10.1103/PhysRevLett.87.216101
M3 - Article
AN - SCOPUS:85037181643
SN - 0031-9007
VL - 87
SP - 216101-1-216101-4
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
ER -