Flow-induced patterning of Langmuir monolayers

Langmuir

Volumn 20, Issue 14, 2004, Pages 5651-5654

  Vogel, Michael J ^a   Miraghaie, Reza ^b   Lopez, Juan M ^c   Hirsa, Amir H ^d  

^a Department of Obstetrics Gynecology   (United States)

^b UNIVERSITY OF CALIFORNIA   (United States)

^c ARIZONA STATE UNIVERSITY   (United States)

^d RENSSELAER POLYTECHNIC INSTITUTE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BREWSTER ANGLE MICROSCOPY; FLOW-PATTERN PATTERNING; HYDRODYNAMIC EFFECTS; LANGMUIR MONOLAYERS;

BOUNDARY LAYERS; CONCENTRATION (PROCESS); FAST FOURIER TRANSFORMS; FLOW PATTERNS; HYDRODYNAMICS; OPTICAL MICROSCOPY; PHASE INTERFACES; SHEAR STRESS;

MONOLAYERS;

BOUNDARIES; CONCENTRATION; HYDRODYNAMICS; MONOLAYERS; SHEAR STRESS;

PHYTOMENADIONE; WATER;

AIR; ARTICLE; ARTIFICIAL MEMBRANE; CHEMISTRY; FLOW KINETICS; LASER; PARTICLE SIZE; SURFACE PROPERTY; TIME;

AIR; LASERS; MEMBRANES, ARTIFICIAL; PARTICLE SIZE; RHEOLOGY; SURFACE PROPERTIES; TIME FACTORS; VITAMIN K 1; WATER;

EID: 3142743140     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la0492355     Document Type: Article

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24. The surface-bound particles were obtained from 0.05 mL of 3 μm polystyrene particles (Aldrich 45,941-0, 10% solid) in a 13mL glass test tube by a methanol (Aldrich 27,047-4) rinse and subsequent rinse with double-distilled water the resulting surface-bound particles were harvested from the top of the test tube, where they accumulated. Once the harvested particles are deposited on the surface of the clean water, they remain there despite any degree of agitation or flow.
25. A frequency-doubled (532 nm) Nd:YAG laser (New Wave Research, Solo-I) producing 5 ns long pulses at a rate of 30 Hz was utilized. Thus, the movement of the monolayer during the laser pulse was less than a nanometer (compared to the 2 nm field of view) and was imperceptible. The schematic of the BAM is presented in Figure 1. The laser output was passed through a half waveplate (Thorlabs WPH05M-514) to obtain p polarized light, and a Glan polarizer removed any non-p polarized light ahead of the air/water interface. The reflected light was imaged using a lens system (Thales-Optem, 70XL, with a 2×TV tube) mounted on a CCD camera (Texas Instruments,1134P) with a 30 Hz frame rate.For all the images presented, the total magnification was 4×.
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