Amorphous graphene, copper clusters, and solar cells – these and more in February’s physics highlights.

Litmus paper for detecting organic solvents
A litmus-type sensor system for the detection of volatile organic compounds is developed using a common office inkjet printer.

Swimming Microbots: Self-propelling Catalytic Micromotors Follow a pH Gradient
Scientists have developed autonomous catalytic microrobots that swim towards a specified target with a speed of 20 body length per second.

Cooling semiconductors using only light
Nanyang researchers take group II-VI semiconductor cadmium sulfide from 20 to -20 degrees C in major breakthrough.

Novel Material Knocks Bacteria Away
Duke University engineers have developed a material that can be applied like paint to the hull of a ship and dislodge bacteria from the ship’s surface.
Graphene selected as part of new €1000 million European project
Flagship aims to take graphene and related layered materials from academic laboratories to society.

New DARPA project seeks vanishing electronics
Project seeks to develop electronics that will melt on command – proposer’s day has been announced.

Ratiometric fluorescence sensing
Researchers from Coimbra (Portugal), Wuppertal (Germany), and Santa Barbara (USA) present a cationic fluorene-thiophene diblock copolymer for ratiometric sensing of both halide ions and DNA.

Organic ferroelectric material for future electronics applications
Researchers have discovered a molecule that shows promise as an organic alternative to today’s silicon-based semiconductors.

Catalytic subsurface etching: digging nanotunnels into graphite
Tiny metal balls used to etch graphite tunnels with diameters of only one-thousandth that of a human hair.