Another team figures out how to convert waste heat into energy
Not that mad scientists haven’t figured out a way to convert waste heat into energy, but a team from Ohio State University has developed a new material that does the same sort of thing… just way, way better. The new material goes by the name thallium-doped lead telluride, and at least in theory, it could actually convert exhaust heat from vehicles into electricity. According to a new report about to hit the journal Science, the material packs “twice the efficiency of anything currently on the market,” though it still seems as if it’s a good ways out from being ready for commercial applications. Nanotechnology geeks — you’ve got a real treat waiting in the read link.
[Via CNET]
Carbon nanotubes may very well kill you (okay, so that’s very much a stretch), but you’ll have a hard time convincing the dutiful scientists at the University of Illinois at Urbana-Champaign to stop their promising research. Put simply (or as simply as possible), said researchers have discovered that “networks of single-walled carbon nanotubes printed onto bendable plastic perform well as semiconductors in integrated circuits.” So well, in fact, that the nanotube networks could one day “replace organic semiconductors in applications such as flexible displays.” Granted, there is still much to do before these networks are ready for product integration, but you can bet these folks aren’t hitting the brakes after coming this far.
We haven’t seen all that many OLED lighting options, but a group of researchers from the University of Michigan and Princeton University say they could be on the verge of changing that situation, with them now boasting of a new breakthrough that could greatly increase the efficiency of OLEDs. The key to that, it seems, is a combination of an organic grid and some tiny dome-shaped micro lenses that guide the trapped light out of the devices. As the researchers point out, with current OLEDs, only 20% of the light generated is actually released, but they say this new method could boost the efficiency by a full 60%, or about 70 lumens per watt of power. Of course, they’re also quick to point out that all of this is still quite a ways away from becoming practical for commercial purposes, although they seem to be optimistic that the eventual production cost for these new and improved OLEDs will be competitive with existing ones.
Check it, nerds. A team over at the Universidade Nova de Lisboa has reportedly figured out a way to use paper (yes, paper) as an interstrate component of a Field Effect Transistor (FET). In testing, the group “fabricated the devices on both sides of the paper sheet,” thus causing the paper to act as the “electric insulator and as the substrate” simultaneously. Remarkably, results showed that performance actually rivaled that of best-in-class oxide thin film transistors, giving revived hope for the realm of disposable devices like paper displays, labels, intelligent packaging, tracking tags, etc. The findings are scheduled to be published this September, after which we’re sure any firms interested in taking this stuff commercial will be putting their best foot forward.