Coating bilayer

Fig. VI-6. The force between two crossed cylinders coated with mica and carrying adsorbed bilayers of phosphatidylcholine lipids at 22°C. The solid symbols are for 1.2 mM salt while the open circles are for 10.9 roM salt. The solid curves are the DLVO theoretical calculations. The inset shows the effect of the van der Waals force at small separations the Hamaker constant is estimated from this to be 7 1 x 10 erg. In the absence of salt there is no double-layer force and the adhesive force is -1.0 mN/m. (From Ref. 66.)...

B Roux, TB Woolf. Molecular dynamics of Pfl coat protein in a phospholipid bilayer. In KM Merz Ir, B Roux, eds. Biological Membranes A Molecular Perspective from Computation and Experiment. Boston Birkhauser, 1996, pp 555-587. 

Langmuir-Blodgett films (LB) and self assembled monolayers (SAM) deposited on metal surfaces have been studied by SERS spectroscopy in several investigations. For example, mono- and bilayers of phospholipids and cholesterol deposited on a rutile prism with a silver coating have been analyzed in contact with water. The study showed that in these models of biological membranes the second layer modified the fluidity of the first monolayer, and revealed the conformation of the polar head close to the silver [4.300]. 

Fig. 5. Schematic representation of a Pt electrode coated with succesive layers of redox polymers A and B a bilayer transistor electrode. Arrows indicate directions in which communication of the electrode and the outer layer is possible (from ref. ).

FIG. 8 Si02 AFM image of six bilayers in situ self-assembled layer-by-layer films of polypyrrole coated with Si02 and poly(styrene sulfonate). 

This result demonstrates that the self-spreading dynamics are controllable by tuning the bilayer-substrate interactions. The above-mentioned electrolyte dependence is an example of this fact. Considering that there are many parameters that alter the bilayer-substrate interaction, a diverse approach can be proposed. For example, Nissen et al. investigated the spreading dynamics on the substrate coated with polymetic materials [48]. They found that insertion of a hydrophilic and inert polymer layer under the self-spreading lipid bilayer strongly attenuated the bilayer-substrate interaction. 

In the substrate configuration the stainless steel carrier is coated with a Ag-ZnO bilayer in order to enhance the back reflection of the back contact see Figure 73 [11]. An increase in 7sc of about 50% was achieved by Banerjee and Guha [589] by using a textured Ag-ZnO bilayer, which further enhances the optical path length and consequently the absorption. As at this stage no [Pg.172]

In the commercial version of the PAMPA assay, a sandwich (Fig. 7.9) is formed from a specially-designed 96-well microtiter plate [pION] and a 96-well microfilter plate [several sources], such that each composite well is divided into two chambers donor at the bottom and acceptor at the top, separated by a 125-pm-thick microfilter disk (0.45 pm pores, 70% porosity, 0.3 cm2 cross-sectional area), coated with a 10% wt/vol dodecane solution of egg lecithin (a mixed lipid containing mainly PC, PE, a slight amount of PI, and cholesterol), under conditions that multilamellar bilayers are expected to form inside the filter channels when the system contacts an aqueous buffer solution [543]. 

B. Fabre, S. Burlet, R. Cespuglio, and G. Bidan, Voltammetric detection of NO in the rat brain with an electronic conducting polymer and Nafion bilayer-coated carbon fibre electrode. J. Electroanal. Chem. 426, 75-83 (1997). 

The addition of In and Ga and selenization at high temperature were crucial in obtaining the 13.4%-efficient device. Photovoltaic device fabrication was completed by a CBD of about 500 A of CdS, followed by RF sputtering of 500 A of intrinsic ZnO and 3500 A of Al203-doped conducting ZnO. Bilayer Ni/Al top contacts were deposited in an e-beam system. The final step in the fabrication sequence is the deposition of lOOnm of MgF2 as an antirellection coating. 

Using the Mie scattering method, the resonant wavelength shift due to the adsorbed lipid membrane onto the tube wall is simulated with the microtube dimensions identical to the previous simulations. The refractive index of lipid bilayer is assumed to be 1.46. When the inner surface of a tube is coated with lipid membrane, the magnetic field for TE mode can be described in the following form ... 

Cast with water soluble polymer from an aqueous solution. Poly(vinyl alcohol) is a suitable inert matrix for supporting bilayer membranes [37], Water solubility of the films composed with poly(vinyl alcohol) can be lowered by coating with celluloseacetate [38] and closs-linking of polymer [39]. 

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