Tweezer Clock

This is a clock designed by researchers at California Institute of Technology and NASA-Jet Propulsion Laboratory (JPL) that will give more accurate and precise time than currently used atomic clocks.
Atomic clocks are used around the world to precisely tell time. Standard atomic clocks in use today, based on the atom cesium, tell time by "counting" radio frequencies.
The new clock design builds upon two types of optical atomic clocks already in use. The first type is based on a single trapped charged atom, or ion, while the second uses thousands of neutral atoms trapped in what is called an optical lattice.
Instead of using a collection of many atoms, the new design uses 40 atoms -- and those atoms are precisely controlled with laser tweezers.