A real-life implementation of the evergreen arcade game Tetris was obtained by optically trapping 42 glass microspheres
(1 μm diameter) in a 25 μm x 20 μm sized field under a microscope.
Their positions are then steered with a computer.
The generation of multiple traps, as well as the computer-steering, is accomplished by the use of acousto-optic deflectors:
devices that tune the deflection of a laser beam that have very fast response.
This page contains real-time videos and images of a μ-Tetris game, played live from the computer keyboard.
(The appearance of the microspheres is influenced by the use of a contrast-enhancing microscopy technique called
differential interference contrast or DIC.)
To read in some more detail about how μ-Tetris was accomplished,
Real-life μ-Tetris was created by Theodoor Pielage, Bram van den Broek and Joost van Mameren.
Please send an e-mail to
Joost van Mameren
for more information.