To fit inside a cell, DNA performs an incredible contortionist feat, squeezing two metres of material into a nucleus only a few
micrometres wide.
Constructed from gold - plated nickel, it is around 700
micrometres wide when fully open, shrinking to 200 micrometres with the arms folded.
To find out why, Sangwoo Shin at the University of Hawaii at Manoa and his team made channels about 50
micrometres wide in a polymer.
Each square Staniland's team have so far produced is around 20
micrometres wide, far too bulky to store data with a density comparable to today's hard drives.
Each hair is about 200 micrometre across, full of pores 15 to 20
micrometres wide.
Their printer is capable of producing features just 40
micrometres wide, and thin films just 16 micrometres thick.
The scaffold is built out of a series of thin layers, stamped with a pattern of channels that are each about 50 to 100
micrometres wide.
These tiny polymer scaffolds contain channels that are about 100
micrometres wide, about the same diameter as a human hair.
Unyong Jeong's team at Yonsei University in Seoul, South Korea, covered a flexible rubber film with a sheet of corrugated microporous polystyrene, with gutters around 3
micrometres wide and 1 micrometre deep.
Colossal molecules have been created that are a full
micrometre wide, and could find uses in quantum computing
The trench pictured above is half
a micrometre wide.
Not exact matches
To measure the velocity, the team used two laser beams to trap a dust - sized, 3 -
micrometre -
wide glass bead in mid-air.
Made entirely of light, the channel was 200
micrometres long and 20
wide at its
widest point.
The final lens cut from these deposits was 40
micrometres (millionths of a metre)
wide, 17.5
micrometres thick and 6.5
micrometres deep.
In their tiny mimic, Clemens Bechinger and Valentin Blickle at the University of Stuttgart, Germany, replaced the cylinder with a laser that confines the motion of a 3 -
micrometre -
wide lump of melamine in water.
By using the most concentrated hydrofluoric acid available, the pores can be made as small as one to two nanometres
wide, but many
micrometres long.