Science Daily September 2, 2021
Profuse dendritic-synaptic interconnections among neurons in the neocortex embed intricate logic structures enabling sophisticated decision-making and dynamically reconfigure providing flexibility and adaptability to changing environments. To advance the performance of logic circuits, an international team of researchers (Singapore, Ireland, USA – industry, university of Oklahoma, Texas A&M College Station) used voltage-driven conditional logic interconnectivity among five distinct molecular redox states of a metal–organic complex to embed a ‘thicket’ of decision trees having 71 nodes within a single memristor. The resultant current–voltage characteristic of this molecular memristor exhibited eight recurrent and history-dependent non-volatile switching transitions between two conductance levels in a single sweep cycle. The identity of each molecular redox state determined and confirmed by quantum chemical calculations, revealed the electron transport mechanism demonstrating dynamically reconfigurable, commutative, and non-commutative state logic in multivariable decision trees that execute in a single time step and can be applied as local intelligence in edge computing…read more. TECHNICAL ARTICLE
Circuit element structure and I(V) characteristics. Credit: Nature volume 597, pages51–56 (2021)