Hole dynamics in polymer Langmuir films

Hole Dynamics in Polymer Langmuir Films

Submitted for the DFD05 Meeting of The American Physical Society Hole Dynamics in Polymer Langmuir Films J. ADIN MANN, JR., JAMES ALEXANDER, Case Western Reserve University, ANDREW BERNOFF, Harvey Mudd College, LU ZOU, ELIZABETH MANN, Kent State University — We develop a model for the closing of a gaseous hole in a liquid domain within a two-dimensional fluid layer, a Langmuir film, coupled to ...

Piezoelectric and pyroelectric properties of ferroelectric Langmuir-Blodgett polymer films

Ferroelectric nanomesa formation from polymer Langmuir-Blodgett films

Anomalous Dynamics of Polymer Films

This chapter reviews the recent experiments involving the dynamics of polymer films with thickness comparable to the gyration radius of the polymer, which overwhelmingly show that their glass transition temperature, Tg, depends on the film thickness and can sometimes differ significant from that of the bulk. The greatest mystery is the onset film thickness of this phenomenon being ~50 nm, much ...

Hole-Growth Instability in Dewetting of Evaporating Polymer Solution Films

We investigate the dewetting of aqueous, evaporating polymer [poly(acrylic acid)] solutions cast on glassy hydrophobic (polystyrene) substrates. As in ordinary dewetting, the evaporating films initially break up through the nucleation of holes that perforate the film, but the rapidly growing holes become unstable and form nonequilibrium patterns resembling fingering patterns that arise when inj...