Tropes

www.azonano.com 2015 00511.txt.txt

#Simpler Thermodynamic Approach Could Help Improve the Performance of Graphene-Based Nanoelectronic Devices The researchers found that the energy of ultrafast electrical currents passing through graphene is converted very efficiently into electron heat, making graphene electrons behave just like a hot gas. he heat is distributed evenly over all electrons. And the rise in electronic temperature, caused by the passing currents, in turn has a strong effect on the electrical conduction of grapheneexplains Professor Mischa Bonn, Director at the MPI-P. The study, entitled hermodynamic picture of ultrafast charge transport in graphene has recently been published in Nature Communications. Graphene a single sheet of carbon atoms is known to be a very good electrical conductor. As a result graphene finds a multitude of applications in modern nanoelectronics. They range from highly efficient detectors for optical and wireless communications to transistors operating at very high speeds. A constantly increasing demand for telecommunication bandwidth requires an ever faster operation of electronic devices, pushing their response times to be as short as a picosecond. he results of this study will help improve the performance of graphene-based nanoelectronic devices such as ultra-high speed transistors and photodetectorssays Professor Dmitry Turchinovich, who led the research at the MPI-P. In particular they show the way for breaking the terahertz operation speed barrier i e. one thousand billions of oscillations per second for graphene transistors. Source: http://www. mpip-mainz. mpg. de w

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