Turning DNA strands into fiber optical cables: ChalmersUofTech researchers want to praise their new technique because it allows them to easily convert strands of DNA into very small fibre optic cables. The key is assembling chromophores (molecules that absorb and pass light) in a chain. The group used a YO chromophore that has a strong affinity for DNA molecules -- it hungrily jams itself in between the basepair rungs of DNA strands. Just like that, you've got a 20nm long/1-2nm wide optical wire, the perfect size for microchip interconnects. They placed a molecule that would accept light on one end and one that would emit light at the other.
A downside is that in early testing, it shows the strands naturally transmit about 30 percent of the light received; also, since they are naturally replicating, precise positioning along the strand can't be acertained so variations could exist. On the extraplus side, though, if one chromophore gets damaged, another will naturally take its place so they are self-healing. Some uses: Artificial photosynthesis to replace solar panels, optical computers.
All the antimatter you can eat
Cooking with lasers: Lawrence Livermore researchers have a recipe for antimatter -- shoot an intense laser through a pinhead-size gold bit and whooosh! 100 billion particles of antimatter (positrons). The laser drives accelerated ions (loose electrons) through the gold where they interact with the gold nuclei. The interaction makes the electrons emit pure energy packets which decay into matter and antimatter. It's the concentration of energy and mass that produces the copious amounts of antiparticles -- researchers have done this trick before but they'd only tried it with thin sheets of gold and less-intense lasers.