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Search: WFRF:(Ferrari R.) > Book chapter

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1.
  • Daafouz, J., et al. (author)
  • Switched and  piecewise affine systems
  • 2009
  • In: Handbook of Hybrid Systems Control. - : Cambridge Press. - 9780511807930 - 9780511807930 ; , s. 87-138
  • Book chapter (other academic/artistic)
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2.
  • Viti, Leonardo, et al. (author)
  • Thermoelectric graphene photodetectors with sub-nanosecond response times at terahertz frequencies
  • 2021
  • In: Frontiers in Optics and Photonics. - : De Gruyter. ; , s. 89-98
  • Book chapter (other academic/artistic)abstract
    • Ultrafast and sensitive (noise equivalent power <1 nW Hz-1/2) light-detection in the terahertz (THz) frequency range (0.1-10 THz) and at room-temperature is key for applications such as time-resolved THz spectroscopy of gases, complex molecules and cold samples, imaging, metrology, ultra-high-speed data communications, coherent control of quantum systems, quantum optics and for capturing snapshots of ultrafast dynamics, in materials and devices, at the nanoscale. Here, we report room-temperature THz nano-receivers exploiting antenna-coupled graphene field effect transistors integrated with lithographically-patterned high-bandwidth (-100 GHz) chips, operating with a combination of high speed (hundreds ps response time) and high sensitivity (noise equivalent power <120 pW Hz-1/2) at 3.4 THz. Remarkably, this is achieved with various antenna and transistor architectures (single-gate, dual-gate), whose operation frequency can be extended over the whole 0.1-10 THz range, thus paving the way for the design of ultrafast graphene arrays in the far infrared, opening concrete perspective for targeting the aforementioned applications.
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