Cleaner Graphene Offers Better Device Performanceckwu writes "Graphene has a dirty little secret. When researchers build electronic devices with it, the standard process they use to move sheets of the delicate, single-atom-thick material into place can lead to contamination or damage that reduces device performance. But now, researchers in Taiwan have developed a simple and elegant way to transfer graphene that keeps the material clean. To test their new transfer method, the researchers made a series of devices, including graphene-based transistors. Electrical charges could move 50% faster through the transistors than in those made with graphene transferred by the conventional method. One researcher suggests the new method could be used to make a type of extremely low-power transistor with interesting quantum effects, called a BiSFET, which ideally needs very clean graphene."
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