Robotic crab is the world's smallest botRobotic crab is the world's smallest bot

Micro-sized robots can do tasks in tightly confined spaces, including the human body.

A team of researchers from Northwestern University has created the smallest ever remote-controlled walking robot - a peekytoe crab that measures only half a millimeter wide. 

The bot, which has 10 legs, two of which end in mini clamps, is designed to do tasks in confined spaces. It could be used as a surgical assistant or factory hand when delicate inspection and maintenance tasks are required. 

This article first appeared in sister publication IoT World Today .