19 datasets found

It is possible that there is a coupling between the spin and gravitation, for instance by an adaptation of the Hamiltonian with an additional termH=k/c (gvec.Svec) where gvec is...

Migration of small molecules to, and across the surface of polymer matrices is a little-studied problem with important industrial applications. PVAc films are of industrial...

Off-specular neutron reflection is potentially a powerful technique for studying the lateral organisation of phospholipid bilayers. However, this has not yet been demonstrated....

In this proposal we request beamtime on the Inter reflectometer to study the unexpected adsorption behaviour of the surfactant bis(2-ethylhexyl) sulfosuccinate caesium salt...

In Sheffield, 9% efficient organic solar cells have been made using a new non-fullerene acceptor called ITIC, when blended with semiconducting polymers. GIWAXS measurements have...

Oligomers are commonly added to adhesives in order to improve surface tack properties. However, it is also important that the oligomers do not adversely affect the solid (glassy...

In recent work with Unilever we have been investigating the structure of gels formed by partially oxidised cellulose nanofibrils for use in sustainable personal care products....

Advantages of using organic materials as the active layer in photovoltaics include their suitability for low cost and large area processes and their mechanical flexibility. In...

Ferrofluids are liquids having magnetic nanoparticles dispersed in a solvent and covered with surfactants to prevent them from agglomeration. The particles can form smectic like...

Our recent NR experiment have shown some fascinating interplay between surfactants and plasticisers in PVA film, which leads to dramatic changes in the surface segregation of...

Electric field induced changes in the swelling of a strong polyelectrolyte brush will be investigated using neutron reflectivity. A poly(styrene sulphonate), PSS, brush will be...

We propose to study thin-film blends of the polymer:fullerene system PTB7:PC70BM using neutron reflectivity (NR). This system currently exhibits the highest power conversion...

In addition to smoothing and self-affine roughening ion bombardment of solid surfaces can result in ripple and dot structures with nanometer scale dimensions. This method...

Despite the wide practical interest in particulate colloids there have been few studies that exploit the advantages of reflection and neutron scattering to study adsorption of...

Oligomers are commonly added to adhesives in order to improve surface tack properties. However, it is also important that the oligomers do not adversely affect the solid (glassy...

Recent NR results (fig 1) have shown the ability to characterise surface segregation and nanostructuring of surfactants in PVA film. As well as the fundamental scientific...

We have recently reported a remarkably rich range of surface segregation and self-organisation behaviour for surfactants and plasticisers in PVA film. These experiments are...

We will use specular and off-specular neutron reflectivity to provide a structural mechanism for the way in which the amphipathic peptide pinholin controls bacterial cell lysis...

The voltage-induced actuation of a weak polyelectrolyte brush is an example of an ultrathin, remotely controlled responsive surface coating. We propose a continuation of...