Sepp Hasslberger: Biplane to break sound barrier

Biplane to Break the Sound Barrier: Cheaper, Quieter and Fuel-Efficient Biplanes Could Put Supersonic Travel On the Horizon ScienceDaily (Mar. 19, 2012) — Cheaper, quieter and fuel-efficient biplanes could put supersonic travel on the horizon. For 27 years, the Concorde provided its passengers with a rare luxury: time saved. For a pricey fare, the sleek …

Sepp Hasslberger: Nanotrees Harvest Sun Energy to Convert Water into Hydrogen Fuel

Nanotrees harvest the sun’s energy to turn water into hydrogen fuel (PhysOrg.com) — University of California, San Diego electrical engineers are building a forest of tiny nanowire trees in order to cleanly capture solar energy without using fossil fuels and harvest it for hydrogen fuel generation. Reporting in the journal Nanoscale, the team said nanowires, …

Sepp Hasslberger: Graphene Battery Turns Ambient Heat into Electric Current

Graphene Battery Turns Ambient Heat Into Electric Current – Technology Review Physicists have built a graphene battery that harvests energy from the thermal movement of ions in solution Here’s an interesting idea for a battery. The thermal velocity of ions in aqueous solution is huge–hundreds of metres per second at room temperature. And yet few …

Sepp Hasslberger: Green Cement Slimes Forward

Drexel Engineers Develop Cement With 97 Percent Smaller Carbon Dioxide and Energy Footprint Drexel University engineers have found a way to improve upon ordinary Portland cement (OPC), the glue that’s bonded much of the world’s construction since the late 1800s. In research recently published in Cement and Concrete Composites the group served up a recipe …