Page 14 - Spring 2024
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AI applied to create new rugged                       and physical testing results underscored the
          Microstructures                                       methodology’s validity.

          Researchers at the Massachusetts Institute of         A ‘Neural-Network Accelerated Multi-
          Technology Computer Science and Artificial            Objective Optimisation algorithm’ resulted,
          Intelligence Laboratory have developed an             which navigates the intricate landscape of
          innovative AI system which utilises simulations       microstructure design, uncovering configurations
          alongside testing to forge new microstructures.       that exhibit near-optimal mechanical properties.
          By combining computational design with                The algorithm thus serves as a self-optimising
          physical experiments and advanced neural              mechanism that constantly refines its
          networks a new approach to material creation          predictions so as to more closely reflect actual
          has been devised that has led to the creation of
                                                                results.
          microstructured composites that redefine the
          benchmarks for toughness and durability in            Ultimately it is aimed to design fully automated
          engineering materials.                                laboratories that minimise the need for human
                                                                intervention and maximise efficiency.
          Neural networks are deployed as ‘surrogates’ for
          simulations, streamlining the material design         Reference: Fowle, H., Electronic Specifier, 19th. February
          process. An evolutionary algorithm enhanced by
          neural networks efficiently pinpoints the highest
          performing samples combining stiffness with           AI challenges uniqueness of Fingerprints
          toughness.
                                                                Engineers at the University of Columbia have
          The methodology commenced with the                    used AI to demonstrate that fingerprints from
          fabrication of 3D-printed photopolymers, each         different fingers of the same person are not as
          no larger than a smartphone, but considerably         unique as previously thought.
          thinner. These were then subjected to a unique
                                                                The team used a public US Government
          ultraviolet light treatment followed by tensile
                                                                database of around 60,000 fingerprints to feed
          testing using an Instron 5984 machine. This
                                                                pairs into a deep contrastive network AI system.
          physical testing, combined with advanced
                                                                Sometimes the pairs belonged to the same
          simulations within a high-performance
                                                                person (but different fingers) whilst in other
          computing framework, enabled the prediction
          and refinement of material characteristics with       cases they belonged to completely different
          unprecedented accuracy.                               people.
          A key aspect of the research was the                  The AI system, adapted from an advanced
          development of a method to coalesce different         framework, improved its ability to discern when
          materials at a microscopic scale. This process,       seemingly unique fingerprints were from the
          characterised by a complex pattern of miniscule       same person with the accuracy for a single pair
          droplets that amalgamated rigid and subtle            reaching 77 per cent, whilst with multiple pairs
          substances, achieved a harmonious balance             it significantly increased to the point where
          between strength and flexibility. The close           forensic efficiency was potentially enhanced
          correlation between simulation outcomes               more than ten fold.
                                                                A notable achievement was the identification
                                                                of a new type of forensic marker used by the
              Visit our                                         AI, which was quite different from the standard
                                                                ‘minutiae’, that is branchings and endings
             website!                                           in fingerprint ridges. Instead, the AI focused
                                                                on angles and curvatures in the centre of
                                                                fingerprints.
             Why not head down to our
               website and read more
                                                                The findings suggest that AI may have
              news in our blog section?                         ‘transformative potential’ in some otherwise
                                                                established fields. In particular, AI can provide
                  Updated daily with
                                                                new insights from existing data and it would
                 hand-picked articles
                                                                appear that new AI-led discoveries are waiting to
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                                                                be made.
            institutionofelectronics.ac.uk                      Reference: West, P., ‘Not every Fingerprint is unique, AI
                                                                discovers’, Electronic Specifier, 11th. January


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