The Statutory Standard of Care in Australia and its Application to Experimental Medical Practice.

Clinical innovation is essential in the development and improvement of interventions used to treat medical conditions. In Australia, the States and Territories have statutorily reintroduced the Bolam principle in a modified form which provides a defence for medical practitioners who have practised in a manner that, at the time, was widely accepted in Australia by peer professional opinion as competent professional practice. This article explores whether the standard could be successfully pleaded as a defence by experimental practitioners. In doing so, the obstacles to an experimental practitioner's ability to rely on the statutory defence are analysed. It finds that the standard effectively entrenches established practices without sheltering legitimate efforts to advance medicine.

Piezoelectric Effect of Cellulose Nanocrystals Thin Films.

Ultrathin films of aligned cellulose nanocrystals (CNCs) were assembled on mica supports by using electric field-assisted shear. The relationship between polarization gradients and strain mechanics of the obtained films was examined by monitoring their deflection with an atomic force microscope operated in contact mode. The piezoelectric response of the films was ascribed to the collective contribution of the asymmetric crystalline structure of the cellulose crystals. The magnitude of the effective shear piezoelectric constant (d25) of highly ordered CNC films was determined to be 2.1 Å/V, which is comparable to that of a reference film of a piezoelectric metal oxide.

Dielectrophoresis of cellulose nanocrystals and alignment in ultrathin films by electric field-assisted shear assembly.

Ultrathin films of cellulose nanocrystals (CNCs) are obtained by using a convective assembly setup coupled with a low-strength external AC electric field. The orientation and degree of alignment of the rod-like nanoparticles are controlled by the applied field strength and frequency used during film formation. Calculated dipole moments and Clausius-Mossotti factors allowed the determination of the critical frequencies, the peak dielectrophoresis as well as the principal orientation of the CNCs in the ultrathin films. As a result of the combination of shear forces and low electric field highly ultrathin films with controlled, unprecedented CNC alignment are achieved.