Today's best molecular filters, siliceous zeolites, filter gases too slowly to be of much use for everyday applications. So researchers at Carnegie Mellon University in Pittsburgh, PA, have an alternative solution: carbon nanotubes. Using atomistic simulations, David Sholl and associates calculated both self- and transport diffusivities of light gases in carbon nanotubes and in two zeolites with comparable pore sizes. The carbon nanotube filter gases 100 to 1,000 times faster than siliceous zeolites or any microporous material for which experimental data are available. This increased speed implies that nanotubes could provide a practical way to make large-scale gas filters, says Sholl. For more information, e-mail David S. Sholl at firstname.lastname@example.org.
When you think of the DARPA Robotics Challenge, you may imagine complex humanoid contraptions made of metal and wires that move like a Terminator Series T-90. But what actually happened at the much-vaunted event was something just a bit different.
Traditional dev kits are based on a manufacturer’s microcontroller, radio module, or sensor device. The idea is to aid the design engineer in developing his or her own IoT prototype as quickly as possible. A not-so-traditional IoT development kit released by Bosch aims to simplify IoT prototyping even further.
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