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Bio-inspired Fibres Change Colour When Stretched

By Guest PostFebruary 6, 2013Sciencealfie lethbridge, bastard hogberry, bio inspired fibres, birds, blue colour, bright iridescent, cells, change colour, creation, cylindrical cross section, eye on earth, fruit, geographic area, Germany, harvard laboratories, harvard university, heat, joanna aizenberg, key elements, light and colour, ludwig maximilians university, margaritaria nobilis, mathias kolle, moritz kreysing, nanoscale, new fibre, peter vukusic, photonic fibres, polymer bilayer, pressure, principal investigator, seed, skin, smart fabrics, soap bubbles, south american, specific biological function, technological design, tropical plant, unique structural elements, university of exeter, vibrant colour, when stretched

A team of materials scientists at Harvard University and the University of Exeter has invented a new fibre which changes colour when stretched. Inspired by nature, the researchers identified and replicated the unique structural elements, which create the bright iridescent blue colour of a tropical plant’s fruit.

The multilayered fibre, described in the journal Advanced Materials, could lend itself to the creation of smart fabrics that visibly react to heat or pressure.

“Our new fibre is based on a structure we found in nature, and through clever engineering we’ve taken its capabilities a step further,” says lead author Dr Mathias Kolle, a postdoctoral fellow at the Harvard School of Engineering and Applied Sciences (SEAS). “The plant, of course, cannot change colour. By combining its structure with an elastic material, however, we’ve created an artificial version that passes through a full rainbow of colours as it’s stretched.” (more…)

Taking ‘Multi-Core’ Mainstream

By Guest PostJanuary 16, 2013Technologyadvanced, agency, algorithms, automatic, automatic parallelization, complexity, computer programmers, defense, environments, fundamental issues, harnessing, independent core, inputs, john cavazos, lane mclaughlin, lehigh university, loops in parallel, machine code, michael spear, modern software, multicore computer environments, multicore computer processors, new algorithms, nsf, open source software, parallel code, parallel programs, parallelization, parallelization techniques, pi, power, principal investigator, profile driven, projects, prototype, research, smart, software developers, source code, speculative parallelization, techniques, tool, ud professor, university of delaware

UD professor works to overcome challenges in harnessing power of multicore computer processors

Computer processors that can complete multiple tasks simultaneously have been available in the mainstream for almost a decade. In fact, almost all processors developed today are multicore processors. Yet, computer programmers still struggle to efficiently harness their power because it is difficult to write correct and efficient parallel code.

According to the University of Delaware’s John Cavazos, to effectively exploit the power of multi-core processors, programs must be structured as a collection of independent tasks where separate tasks are executed on independent cores.

The complexity of modern software, however, makes this difficult. (more…)

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Bio-inspired Fibres Change Colour When Stretched

Taking ‘Multi-Core’ Mainstream