Open cell, lattice truss structures have been made by folding perforated 6061 aluminium alloy sheets. Simple air brazing is used to construct sandwich panels with cellular core relative densities between 0.02 and 0.08. Some panels were quenched and aged while others were tested in an annealed condition. The measured peak compressive strengths varied from 0.7 to 20 MPa, increasing with core rela...

Recently, there has been great interest in flexible and wearable energy devices for applications in flexible and stretchable electronics. Even though future developments are moving toward thinner, lighter, and cheaper solutions, many existing energy-harvesting and storage devices are still too bulky and heavy for intended applications. For example, high-efficiency dye-sensitized solar cells (DS...

Andrew Billingsley in Black Families in White America has criticized much of the previous research on the black family, saying that social scientists have ignored the structural variation among families and have focused on a very limited number of family functions. To correct what he believes to be a distorted picture of the black family, he has suggested a typology of family structures and a l...

This study (1975-1977) examines the effect of man-made structures on natural sand bottom communities in shallow water in San Diego County, southern California, USA. While there were shallow scour effects to 15 m around some artificial reefs, the reefs had no measurable effect on sand ripple patterns, grain size, organic carbon or infauna beyond the scoured areas. Foraging by reef-associated fis...

A new anodization method for the preparation of nanoporous anodic aluminum oxide (AAO) with pattern-addressed pore structure was developed. The approach is based on pulse anodization of aluminum employing a series of potential waves that consist of two or more different pulses with designated periods and amplitudes, and provides unique tailoring capability of the internal pore structure of anod...

A nano fabrication process using caesium chloride in an island lithography scheme has been used to make wells in a silicon dioxide layer on silicon. Silver structures have been made in these wells using an electroless process that involves the reduction of silver ions and oxidation of silicon in the presence of fluoride ions. The silver deposition process is found to be diffusion controlled. Th...

We present a theoretical study of the electronic structures of freestanding nanowires made from gallium phosphide (GaP)-a III-V semiconductor with an indirect bulk bandgap. We consider [001]-oriented GaP nanowires with square and rectangular cross sections, and [111]-oriented GaP nanowires with hexagonal cross sections. Based on tight binding models, both the band structures and wave functions ...

simon bray, emily c. mcvean, andrew nelson, roger j.h. herbert, stephen j hawkins and malcolm d. hudson Faculty of Engineering and Environment, University of Southampton, Highfield, Southampton, Hampshire, SO17 1BJ, Field Studies Council, Nettlecombe Court, The Leonard Wills Field Centre, Williton, Taunton, Somerset, TA4 4HT, School of Conservation Sciences, Christchurch House, Bournemouth Univ...

In this paper, a numerical multiscale method is proposed for computing the response of structures made of linearly non-aging viscoelastic and highly heterogeneous materials. In contrast with most of the approaches reported in the literature, the present one operates directly in the time domain and avoids both defining macroscopic internal variables and concurrent computations at micro and macro...