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The Colors of Money

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Caren B. Les, [email protected]

Who wouldn’t want a machine that prints $100 bills? But such a dream machine would have to outsmart advanced anticounterfeit technology – and this technology gets smarter all the time. One recent advance involves pigment-free, intensely colored polymer materials and was developed by scientists from the Universities of Sheffield and Hull, both in the UK. Colored polymer materials in robust layers on currency notes and passports could defeat the efforts of counterfeiters. The researchers, headed by Andrew J. Parnell at the University of Sheffield, created colors using...Read full article

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    Published: August 2011
    Glossary
    polymer
    Polymers are large molecules composed of repeating structural units called monomers. These monomers are chemically bonded together to form long chains or networks, creating a macromolecular structure. The process of linking monomers together is known as polymerization. Polymers can be classified into several categories based on their structure, properties, and mode of synthesis. Some common types of polymers include: Synthetic polymers: These are human-made polymers produced through...
    synchrotron
    A synchrotron is a type of particle accelerator that uses magnetic fields to steer charged particles, typically electrons or positrons, in a closed, circular or elliptical path. The name synchrotron refers to the synchronization of the accelerating electric field with the increasing particle velocity as they move in a circular path. Synchrotrons are powerful tools used in various scientific and industrial applications, particularly in the generation of intense beams of synchrotron radiation. ...
    Andrew ParnellBasic ScienceCaren B. LescounterfeitingcurrencydefenseDiamond Light SourceEuropeImagingLighter SideMaterials & ChemicalsNick Terrillpassportspolymersmall angle x-ray scatteringsynchrotronThe Color of MoneyUKUniversity of HullUniversity of SheffieldLasers

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