Study of phase transition of two-dimensional ferroelectric copolymer P(VDF-TrFE) Langmuir monolayer by Maxwell displacement current and Brewster angle microscopy

2009 ◽  
Vol 131 (10) ◽  
pp. 104702 ◽  
Author(s):  
Wei Ou-Yang ◽  
Martin Weis ◽  
Xiangyu Chen ◽  
Takaaki Manaka ◽  
Mitsumasa Iwamoto
Keyword(s):  
Phase Transition ◽  
Langmuir Monolayer ◽  
Brewster Angle ◽  
Displacement Current ◽  
Two Dimensional ◽  
Brewster Angle Microscopy ◽  
Maxwell Displacement Current

Generation of Maxwell-displacement current due to tilting phase transition of amphiphile monolayers on water surface

2002 ◽  
Vol 359 (1-2) ◽  
pp. 169-175 ◽  
Author(s):  
Mitsumasa Iwamoto ◽  
Taka-aki Manaka ◽  
Atsushi Tojima ◽  
Ou-Yang Zhong-can
Keyword(s):  
Phase Transition ◽  
Water Surface ◽  
Displacement Current ◽  
Maxwell Displacement Current

scholarly journals Head-group Dependent Domain Morphologies in Langmuir Monolayers

1970 ◽  
Vol 46 (1) ◽  
pp. 47-52
Author(s):  
MM Hossain ◽  
T Kato
Keyword(s):  
Phase Transition ◽  
Langmuir Monolayers ◽  
Brewster Angle ◽  
Head Group ◽  
Critical Surface ◽  
Brewster Angle Microscopy ◽  
Head Groups ◽  
Air Water Interface ◽  
Surface Morphologies ◽  
Internal Texture

The effect of head groups on the thermodynamic properties and morphological features of the domains formed in the Langmuir monolayers at 10 oC has been investigated by a film balance and a Brewster angle microscopy (BAM). 2-hydroxyethyl myristate (2-HEM) and n-tetradecanoyl N-ethanolamide (NHEA-14), having the same chain length but different head groups have been taken as amphiphiles. Both the amphiphiles represent a first-order LE-LC phase transition at 10 oC at the air-water interface. The critical surface pressure necessary for this phase transition is 6.0 mN/m for 2-HEM and 1.0 mN/m for NHEA-14. The surface morphologies of the domains are entirely different. The domains of 2-HEM are circular having internal texture, while those of NHEA-14 are dendritic having directional characteristics. The presence of interfacial hydrogen bonding in the latter amphiphile should be responsible for the formation of such characteristic domains in the case of latter amphiphile. Key words: Langmuir monolayers; Phase transition; Brewster angle microscopy; 2-hydroxyethyl myristate; n-tetradecanoyl Nethanolamide. DOI: http://dx.doi.org/10.3329/bjsir.v46i1.8104 Bangladesh J. Sci. Ind. Res. 46(1), 47-52, 2011

Cooperative photoinduced two-dimensional condensation in Langmuir films observed using nanosecond pump-probe Brewster angle microscopy

2010 ◽  
Vol 5 (3) ◽  
pp. FA105-FA109 ◽  
Author(s):  
Jonathan Hobley ◽  
Sergey Gorelik ◽  
Tomoya Oori ◽  
Shinji Kajimoto ◽  
Hiroshi Fukumura ◽  
...  
Keyword(s):  
Brewster Angle ◽  
Langmuir Films ◽  
Two Dimensional ◽  
Brewster Angle Microscopy ◽  
Pump Probe
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