Smallest knife

According to Official Guinness Records,

The world’s first micro-knife based on carbon nanotube technology has been introduced by researchers at the National Institute of Standards and Technology at the University of Colorado. With an edge capable of slicing samples only 300 nanometres thick, the knife possesses the smallest and sharpest of all blade types currently used for preparing very thin subject samples. Truly a ‘cutting edge’ technology!

For a complete list of Unknown date records, please visit Unknown date Guinness Records in United States.

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