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Hybrid NEMS interfaces are the key to systems combining the benefits of highly sensitive miniaturized mechanical sensors with the vast functionalities available in electronics. In this context, a phase-locked loop, locking on a suspended resonating carbon nanotube NEMS, is implemented and characterized, able to start, track, amplify and sustain NEMS oscillation up to 100MHz in a sensing environment. Detection of the signals out of the NEMS has been found most challenging and diverse RF front-ends meant for interfacing high-impedance carbon nanotube based NEMS are analyzed. Given the feeble signals from the NEMS, their high output impedance and non-negligible interconnect parasitics, front-end design must imperatively focus on minimal noise figure. Limits on minimal detectable signal are extracted via design, simulation and characterization of a 3-stage common-emitter front-end.
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67--72
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Bibliogr. 9 poz.
Bibliografia
- [1] H. B. Peng, C. W. Chang, S. Aloni, T. D. Yuzvinsky, and A. Zettl, “Ultrahigh frequency nanotube resonators,” Phys. Rev. Lett. , vol. 97, no. 8, p. 087203, Aug 2006.
- [2] V. Sazonova, Y. Yaish, H. Ustunel, D. Roundy, T. A. Arias, and P. L. McEuen, “A tunable carbon nanotube electromechanical oscillator,” Nature , vol. 431, no. 7006, pp. 284–287, Sep. 2004.
- [3] J. Chaste, L. Lechner, P. Morfin, G. Feve, T. Kontos, J. Berroir, D. Glattli, H. Happy, P. Hakonen, and B. Placais, “Single carbon nanotube transistor at ghz frequency,” Nano Letters , vol. 8, no. 2, pp. 525–528, 2008.
- [4] M. Huang, Y. Wu, B. Chandra, H. Yan, Y. Shan, T. F. Heinz, and J. Hone, “Direct measurement of strain-induced changes in the band structure of carbon nanotubes,” Phys. Rev. Lett. , vol. 100, p. 136803, Apr 2008.
- [5] C. Kauth, M. Pastre, and M. Kayal, “Wideband low-noise rf front-end for cnt-nems sensors,” Mixed Design of Integrated Circuits and Systems conference proceedings , pp. 289–293, May 2012.
- [6] G. Y. Guo, L. Liu, K. C. Chu, C. S. Jayanthi, and S. Y. Wu, “Electromechanical responses of single-walled carbon nanotubes: Interplay between the strain-induced energy-gap opening and the pinning of the fermi level,” vol. 98, no. 4, p. 044311, 2005.
- [7] Carbon Nanotubes: Properties and Applications . CRC, 2006, p. 93.
- [8] P. G. Collins, M. S. Fuhrer, and A. Zettl, “1/f noise in carbon nanotubes,” Applied Physics Letters , vol. 76, no. 7, pp. 894–896, 2000.
- [9] A. Javey, J. Guo, D. Farmer, Q. Wang, E. Yenilmez, R. Gordon, M. Lundstrom, and H. Dai, “Self-aligned ballistic molecular transistors and electrically parallel nanotube arrays,” Nano Letters , vol. 4, no. 7, pp. 1319–1322, 2004.
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Bibliografia
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bwmeta1.element.baztech-article-LODD-0002-0029