A 2011 breakthrough that was published in Science is attracting increased attention. 'This paper described how passing a current through a monolayer of DNA double helices would favor one type of spin.' The DNA molecules are chiral, which means they can exist in two forms which are each other's mirror image -- like a left and right hand. The phenomenon was dubbed Chiral Induced Spin Selectivity (CISS), and over the last few years, several experiments were published which allegedly showed this CISS effect, even in electronic devices.
University of Groningen Ph.D. student Xu Yang set out to create a generic model which could describe how spins would pass through different circuits under a linear regime (i.e. the regime that electronic devices operate in). 'These models were based on universal rules, independent of the type of molecule'. By publishing his model now, Yang hopes that more scientists will start building the circuits he has proposed, and will finally be able to prove the existence of CISS in electronic devices.
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