A Clay-Metal Complex Ultrathin Film as Prepared by the Langmuir-Blodgett Technique

1999 ◽  
Vol 28 (2) ◽  
pp. 121-122 ◽  
Author(s):  
Kenji Tamura ◽  
Hitoshi Setsuda ◽  
Masahiro Taniguchi ◽  
Takayoshi Nakamura ◽  
Akihiko Yamagishi
Keyword(s):  
Metal Complex ◽  
Ultrathin Film ◽  
Langmuir Blodgett

Langmuir-Blodgett Ultrathin Films Composed of ZnO Nanoparticles: Fabrication and Characterization

2011 ◽  
Vol 183-185 ◽  
pp. 2187-2191
Author(s):  
Dong Yan Tang ◽  
Shuai Han ◽  
Bao Zhu He
Keyword(s):  
Stearic Acid ◽  
Surface Pressure ◽  
Zno Nanoparticles ◽  
Ultrathin Films ◽  
Glass Plate ◽  
Zinc Ion ◽  
Ultrathin Film ◽  
Langmuir Blodgett ◽  
Pressure Surface ◽  
Surface Morphologies

By the Langmuir-Blodgett(LB) technique, the zinc ion containing multilayer was prepared by transferring the zinc acetate, spread on the surface of subphase of ultrapure water and stearic acid-chloroform mixtures, onto a hydrophilic silicon wafer or glass plate. Then the multilayer was converted into ZnO ultrathin films after pre-heating and annealing. The optimized parameters for monolayer formation, such as concentration of subphase, barrier speed and spreading volume, were determined by the measurement of the surface pressure-surface area (Π-A) isotherms. The expended areas after deposition with zinc ions inferred the interaction of stearic acid with zinc ion during the formation of monolayer at air-water interface. The optimized parameters for multilayer deposition, such as surface pressure and lifting speed were determined by the measurement of the transfer coefficient. The X-ray diffraction(XRD) was used to investigate the crystal structures of ZnO nanoparticles and ultrathin film. The surface morphologies of the LB multilayer and ultrathin film were observed by the atomic force microscopy (AFM). A uniform and flat surface of ZnO ultrathin film within nanometer ranges(<35nm) were obtained.

scholarly journals Studies on Adsorption of DNA on Functional Ultrathin Films of Cationic Surfactant

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Monika Poonia ◽  
Anagh Pathak ◽  
V. Manjuladevi ◽  
R. K. Gupta
Keyword(s):  
Surface Morphology ◽  
Cationic Surfactant ◽  
Ultrathin Films ◽  
Quartz Crystal ◽  
Flow Cell ◽  
Ultrathin Film ◽  
Ammonium Bromide ◽  
Langmuir Blodgett ◽  
Atomic Force ◽  
Ultrathin Layer

We have investigated the interaction of DNA with a highly ordered functional ultrathin layer of cationic surfactant, dioctadecyl ammonium bromide (DOAB). The ultrathin film of DOAB is fabricated by Langmuir-Blodgett technique onto the pretreated quartz crystal wafers. The solution of DNA in phosphate buffer saline (PBS) is injected through a flow cell in a quartz crystal microbalance (QCM) loaded with the functional ultrathin film. The QCM data indicate a slower kinetics (time constant  =  162.2 seconds) for the adsorption of DNA on DOAB layer as compared to PBS on DOAB. The surface morphology of the aggregation of DNA over the DOAB layer is investigated using atomic force microscope (AFM). The AFM image indicates the trapping of DNA over the DOAB layer. Such trapping of DNA can be potentially employed in the field of genomics.

scholarly journals Interfacial behaviour of cubic silsesquioxane and silica nanoparticles in Langmuir and Langmuir–Blodgett films

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94934-94941 ◽  
Author(s):  
K. Dopierała ◽  
K. Bojakowska ◽  
J. Karasiewicz ◽  
H. Maciejewski ◽  
K. Prochaska
Keyword(s):  
Silica Nanoparticles ◽  
Ultrathin Film ◽  
Polyhedral Oligomeric Silsesquioxanes ◽  
Langmuir Blodgett ◽  
Superhydrophobic Coatings ◽  
Langmuir Blodgett Films ◽  
Interfacial Behaviour

Fluorinated polyhedral oligomeric silsesquioxanes (POSS) have been established as useful for the fabrication of superhydrophobic coatings, however little attention has been paid to their use for making ultrathin film by the Langmuir–Blodgett method.

Fabrication and Electrical Properties of Dendrimer Langmuir-Blodgett Films Based on Metal Complex

2003 ◽  
Vol 42 (Part 1, No. 4B) ◽  
pp. 2434-2437 ◽  
Author(s):  
Sang-Burm Jung ◽  
Seung-Yeop Yoo ◽  
Chungkyun Kim ◽  
Young-Soo Kwon
Keyword(s):  
Electrical Properties ◽  
Metal Complex ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films
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