Number 196 (Story #1), September 28, 1994 by Phillip F. Schewe and Ben Stein AN ALL-POLYMER TRANSISTOR has been developed by scientists at the Laboratoire des Materiaux Moleculaires in Thiais, France. Previously semiconducting polymers had been used as the active layer (the material in which electrons and holes are active) in transistors and light emitting diodes. The French device, the first to employ polymers for all the components, even the electrodes, is made solely with printing techniques and does not require high-vacuum or high- temperature conditions. Although the polymer transistors are large by industry standards, the fact that they can be run off on large flexible sheets means that they may be valuable for low-cost, large-area electronics applications, such as in flat-panel displays. (Francis Garnier et al., Science, 16 Sept. 1994.)