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New research reveals that carbon nanotubes (CNTs) as a coating can both repel and hold water in place, a useful property for applications like printing, spectroscopy, water transport, or harvesting surfaces. When water is dropped on a CNT forest, the CNTs repel the water, and it forms a sphere. However, when flipped over, the drop does not fall to the ground but rather clings to the surface.

Researchers discovered that a protein called CoRest, a neural repressor that is also found in humans, plays a central role in determining the social behavior of ants. The study also revealed that worker ants called Majors, known as 'brawny' soldiers that protect colonies, can be reprogrammed to perform the foraging role -- generally reserved for their sisters, the Minor ants -- up to five days after they emerge as an adult ant.

Recent technological breakthroughs in artificial intelligence have made it possible for machines, or bots, to pass as humans. A team of researchers studied study how people interact with bots they believe to be human, and how such interactions are affected once bots reveal their identity. The researchers found that bots are more efficient than humans at certain human-machine interactions, but only if they are allowed to hide their non-human nature.

Physicists are working to produce engineered magnetic nanostructures and to tailor material properties at the nanoscale. The scientists use a special microscope to achieve this goal. This microscope's ultrathin ion beam is capable of producing stable, periodically arranged nanomagnets in a sample material. The device can also be used to optimize the magnetic properties of carbon nanotubes.