FG-DTE Molecule and functions
A photonic controlled molecule that can perform 13 logic functions that are reconfigurable via changing the input/output wavelengths of light. The chromophores, the part of the molecule responsible for its color, absorbs certain wavelengths of light. States of the molecule can change depending on the light entered, this created photoswitchable, bitstable chromophores, called photochromes. Researchers from Chalmers University of Technology in Göteborg, University of Huelva, and Arizona State University have created a light-sensetive molecule based on these properties made of one dithienylethene (DTE) and two fulgmides (FG). The combination FG-DTE, for example, can change states with inputs of 302 nm and 397 nm, performing addition and subtraction. All molecules can be reset with green-light in the 460-590 nm range. Researcher Joakim Andréasson, from Chalmers, said All of these 13 logic operations share the same initial state, that is, the molecule is always ‘reset’ to one and the same state by the use of green light, irrespective of which logic function is to be performed. This is another unique feature of our molecule.”
The FG-DTE can also work non-arithmetic functions, digital multiplexor, demultiplexor, and most importantly sequential logic. However, stability over repeated state changes is not consistent. This and string concatenation are the researcher's priority in the coming months.
Eavesdropper
pic via Joakim Andréasson
