Decoupled phase transitions and grain-boundary melting in supported phospholipid bilayers

TY - JOUR

T1 - Decoupled phase transitions and grain-boundary melting in supported phospholipid bilayers

AU - Keller, Danielle

AU - Larsen, Niels B.

AU - Møller, Ian M.

AU - Mouritsen, Ole G.

PY - 2005/1/21

Y1 - 2005/1/21

N2 - Two separate liquid-solid phase transitions are detected in the two monolayers of a mica-supported phospholipid bilayer by atomic force microscopy. The phase transitions of the two monolayers are decoupled by the stronger interaction between the lipid headgroups of the proximal monolayer and the mica support. The transition temperature of the proximal monolayer is increased and this transition occurs over a narrower temperature range. Both transitions occur via grain-boundary melting and the variation of the width of the interfacial zone with temperature is consistent with mean-field theory.

AB - Two separate liquid-solid phase transitions are detected in the two monolayers of a mica-supported phospholipid bilayer by atomic force microscopy. The phase transitions of the two monolayers are decoupled by the stronger interaction between the lipid headgroups of the proximal monolayer and the mica support. The transition temperature of the proximal monolayer is increased and this transition occurs over a narrower temperature range. Both transitions occur via grain-boundary melting and the variation of the width of the interfacial zone with temperature is consistent with mean-field theory.

UR - http://www.scopus.com/inward/record.url?scp=18144423564&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.025701

DO - 10.1103/PhysRevLett.94.025701

M3 - Journal article

C2 - 15698195

AN - SCOPUS:18144423564

SN - 0031-9007

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 025701

ER -