Hinged dissection font, there is one hinged chain of (128) pieces that can fold into any of the letters in the alphabet as well as a square.
Mathematicians father-son duo Erik and Martin Demain, had designed five typefaces based on theorems and computational geometry—it exemplifies the five distinct topics covered in math and science.
These typefaces aptly titled ‘mathematical typefaces’ and ‘algorithmic typefaces’, features topics such as “hinged dissections, geometric tours, origami design, physical simulation, and protein folding”.
The duo's creations consisted of a series of small mathematical puzzles. For instance, their first created font explores the theory of hinged dissections—it proves that a polygon of equal area connected with a hinge can form multiple types of shape, including letters.
Another recent work uses modeling glass techniques shaped by squishing through pastorelli plates that were arranged strategically to form these letters.
Find out more about these interesting typeface creations on Erik's website.
Conveyer belt font, The form without the belts (lines) is a puzzle to decode, based on a mathematical open problem by Manuel Abellanas first posed in 2001.
Penland glass squishing font, hot glass components are arranged (in the puzzle font) so that squishing them horizontally produces a letter (in the clear font)
Linkage font, each letter or number is a fixed-angle linkage (which model protein folding) designed so that random configurations can be uniquely decoded back to text.
Origami maze font, The font can be folded as extruded letters from a rectangle of paper, using an algorithm for folding orthogonal graphs.
[via Gizmodo, Erik Demaine]