Formation of 2D colloidal crystals by the Langmuir–Blodgett technique monitored in situ by Brewster angle microscopy

2007 ◽  
Vol 307 (1) ◽  
pp. 304-307 ◽  
Author(s):  
Alvaro Gil ◽  
Francisco Guitián
Keyword(s):  
Colloidal Crystals ◽  
Brewster Angle ◽  
Brewster Angle Microscopy ◽  
Langmuir Blodgett

Direct Observation of Calcium Oxalate Monohydrate Precipitation at Phospholipid Monolayers with Brewster Angle Microscopy

2003 ◽  
Vol 774 ◽  
Author(s):  
Isa O. Benítez ◽  
Rénal Backov ◽  
Saeed R. Khan ◽  
Daniel R. Talham
Keyword(s):  
Calcium Oxalate ◽  
Calcium Oxalate Monohydrate ◽  
Brewster Angle ◽  
Brewster Angle Microscopy ◽  
Phase Boundaries ◽  
Phospholipid Monolayers ◽  
Bright Spots ◽  
Two Phases ◽  
Scanning Electron

AbstractThe precipitation of calcium oxalate monohydrate (COM) at phospholipid monolayers has been observed in-situ by Brewster angle microscopy (BAM). A monolayer of 1,2-dipalmitoylsn-glycero-3-phosphocholine (DPPC) compressed to a LC state over a calcium oxalate subphase shows the growth of COM as very bright spots. The identity of COM was confirmed in a transferred film by scanning electron microscopy. BAM can also be used to determine where COM precipitates when the monolayer has two phases at equilibrium. Monolayers of DPPC and 1,2-dipalmitoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] (DPPG) crystallize COM at phase boundaries. In addition, phase separated binary phospholipid mixtures of DPPC and 1,2-dimiristoyl-sn-glycero-3-phosphocholine (DMPC) have been prepared and monitored by BAM. The crystal growth in this case is confined to domains of DPPC due to its ability to form a liquid condensed phase.

In Situ Plasmon-Heating-Induced Generation of Au/TiO2“Hot Spots” on Colloidal Crystals

ChemPhysChem ◽  
2009 ◽  
Vol 10 (7) ◽  
pp. 1017-1022 ◽  
Author(s):  
Ivano Alessandri ◽  
Matteo Ferroni ◽  
Laura E. Depero
Keyword(s):  
Hot Spots ◽  
Colloidal Crystals
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