TechnologySperm-like nanopropeller is smallest swimmer ever Glass nano-devices that can push objects 1000 times their own size could one day be used to deliver drugs or perform nanosurgery ¿ìè¶ÌÊÓÆµ
TechnologyMicromachine power problem solved with magnets Providing power for machinery on the microscale has proved a headache for scientists – but magnetic fields are increasingly being seen as a solution ¿ìè¶ÌÊÓÆµ