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Ultrasensitive sensor using N-doped graphene


A highly sensitive chemical sensor based on Raman spectroscopy and using nitrogen-doped graphene as a substrate was developed by an international team of researchers working at Penn State. In this case, doping refers to introducing nitrogen atoms into the carbon structure of graphene. This ...


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World-first pinpointing of atoms at work for quantum computers


Scientists can now identify the exact location of a single atom in a silicon crystal, a discovery that is key for greater accuracy in tomorrow's silicon based quantum computers. It's now possible to track and see individual phosphorus atoms in a silicon crystal allowing confirmation of quantum ...


Diamonds closer to becoming ideal semiconductors


Along with being a "girl's best friend," diamonds also have remarkable properties that could make them ideal semiconductors. This is welcome news for electronics; semiconductors are needed to meet the rising demand for more efficient electronics that deliver and convert power. The thirst for ...


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New type of graphene-based transistor will increase the clock speed of processors


Scientists have developed a new type of graphene-based transistor and using modelling they have demonstrated that it has ultralow power consumption compared with other similar transistor devices. The most important effect of reducing power consumption is that it enables the clock speed of ...


Achieving zero resistance in energy flow

MIT postdoc Cui-Zu Chang makes a spintronic breakthrough in the Moodera group.


Laptop computer users operating their devices on their laps will be familiar with the heat they generate, which comes from electrical resistance converting waste energy to heat. Scientists dream of creating electronic devices with little or no resistance to the flow of electricity, in order to ...


Atoms placed precisely in silicon can act as quantum simulator


In a proof-of-principle experiment, researchers at UNSW Australia have demonstrated that a small group of individual atoms placed very precisely in silicon can act as a quantum simulator, mimicking nature - in this case, the weird quantum interactions of electrons in materials. The publication of ...


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With simple process, engineers fabricate fastest flexible silicon transistor


One secret to creating the world's fastest silicon-based flexible transistors: a very, very tiny knife. Working in collaboration with colleagues around the country, University of Wisconsin-Madison engineers have pioneered a unique method that could allow manufacturers to easily and cheaply ...


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New properties of superconductivity discovered


New findings from an international collaboration led by Canadian scientists may eventually lead to a theory of how superconductivity initiates at the atomic level, a key step in understanding how to harness the potential of materials that could provide lossless energy storage, levitating trains ...


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Simplifying solar cells with a new mix of materials


An international research team has simplified the steps to create highly efficient silicon solar cells by applying a new mix of materials to a standard design. Arrays of solar cells are used in solar panels to convert sunlight to electricity. The special blend of materials--which could also prove ...


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A clue to generate electric current without energy consumption at room temperature


A group of researchers in Japan and China identified the requirements for the development of new types of extremely low power consumption electric devices by studying Cr-doped (Sb, Bi)2Te3 thin films. At extremely low temperatures, an electric current flows around the edge of the film without ...


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