This year's top five stories -
A composite made from reduced graphene oxide and magnetite could help to clean up drinking water.
2. Junctionless transistor makes its debut
When a voltage is applied to the gate, the "squeezing" effect is reduced and current can flow.
3. Graphene supercapacitor breaks storage record
Structures like this may be able to fast-charge mobile electronics.
4. Laser welding boosts efficiency of TiO2 solar cells
Current flow can be greatly improved by welding the inter-electrode interface with a laser.
5. Rapid synthesis of highly stable gold nanoparticles
Researchers in Norway and China have developed a new environmentally friendly route for synthesizing gold nanoparticles in one step at room temperature. The team plans to use the materials for bio-applications.
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