RT Journal Article
T1 Phase transitions of untilted fatty-acid Langmuir monolayers during isobaric heating and cooling: Interfacial rheology results
A1 Sánchez-Puga, Pablo
A1 Tajuelo, Javier
A1 Martínez Pedrero, Fernando
A1 Guzmán Solís, Eduardo
A1 Ortega Gómez, Francisco
A1 Rubio, Miguel A.
AB We study the two-dimensional melting of fatty acid Langmuir monolayers via the mechanical properties of their untilted phases, compact solid (CS), solid (S), and superliquid (LS). Taking the dynamic moduli as order parameters in isobaric temperature sweeps of behenic and arachidic acid monolayers, the CS-S and S-LS transitions appear as continuous transitions. However, a discontinuity appears in a high-order crossed susceptibility that involves the derivative of the dynamic moduli with respect to the control parameter (temperature). The critical value of the shear storage modulus at the melting temperature agrees with the prediction of the KTHNY theory, but the characteristic exponent does not.
PB American Physical Society
YR 2025
FD 2025-08-13
LK https://hdl.handle.net/20.500.14352/123566
UL https://hdl.handle.net/20.500.14352/123566
LA eng
DS Docta Complutense
RD 7 sept 2025