Growing concern about data theft and counterfeiting has inspired increasingly sophisticated security technologies, like hologram seals, that can help verify the authenticity of currency, passports and other important documents. However, as security technologies evolve, so do the techniques criminals use to get past them. To stay one step ahead of these bad actors, researchers report that they have developed a new photopatterning technique that creates two light-reactive images on one material.
New anti-counterfeit technique packs two light-reactive images into one material
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Transformando gas d/alcantarilla en combustible d/hid en Taringa!
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Researchers use chemical looping process to produce hydrogen from hydrogen sulfide gas
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Científicos descubren cómo hacer combustible con gas tóxico de alcantarillas
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