Nanomechanics of phospholipid LB film studied layer by layer with AFM

Nanomechanics of phospholipid LB film studied layer by layer with AFM

BACKGROUND Phospholipid, a main component of cell membrane, has been explored as a model system of the cell membrane and temporary scaffold materials in recent studies. The mechanical properties of phospholipid layers are essentially interesting since it is involved in several biological processes. RESULTS Here, the nanomechanical properties such as indentation force, adhesion force and DMT (...

Nanomechanics of layer-by-layer polyelectrolyte complexes: a manifestation of ionic cross-links and fixed charges.

This study investigates the roles of two distinct features of ionically cross-linked polyelectrolyte networks - ionic cross-links and fixed charges - in determining their nanomechanical properties. The layer-by-layer assembled poly(allylamine hydrochloride)/poly(acrylic acid) (PAH/PAA) network is used as the model material. The densities of ionic cross-links and fixed charges are modulated thro...

Layer-by-Layer DNA film synthesis via branched hybridization

A new Layer-by-Layer (LbL) DNA film synthesis, where the driving force is the natural DNA hybridization, is presented in this work. The DNA films were synthesized via a branched mechanism and do not include any chemical binders between each layer as it is the case for film obtained by other synthesis paths. Kinetics of film formation were monitored by mass measurements with an electroacoustic n...

Spin-assisted layer-by-layer assembly: variation of stratification as studied with neutron reflectivity.

We apply neutron reflectivity to probe the internal structure of spin-assisted layer-by-layer (SA-LbL) films composed of electrostatically assembled polyelectrolytes. We find that the level of stratification and the degree of layer intermixing can be controlled by varying the type and concentration of salt during SA-LbL assembly. We observe well-defined layer structure in SA-LbL films when depo...

Nanomechanics of electrospun phospholipid fiber