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GHz NEMS Nature 421,496 (2003) New Journal of Physics 7 (2005) 247
Self-oscillations What is self oscillation? – Self oscillator: constant input generates periodic output =Driven oscillator: periodic input generates periodic output Observed in many fields: – Oscillating chemical reaction – heart beat – Rayleigh - Bénard thermal convection – Gunn diode: negative differential resistance electrical device Is it possible in NEMS ?
Page 1 and 2: Introduction to nano-electromechani
Page 3 and 4: Electro Mechanical Systems What is
Page 5 and 6: materials Si, SiN, GaAs standard i
Page 7 and 8: Nano Electro Mechanical Systems ISS
Page 9 and 10: Optical coupling 2µm Need flat su
Page 11 and 12: SEM SiC Nanowire rest fundamental h
Page 13 and 14: Field emission Experimental set up
Page 15 and 16: What’s new? Non-linearity Frequ
Page 17 and 18: Non-linear effects Amplitude Freque
Page 19 and 20: Role of Electric Field Electrostat
Page 21 and 22: Casimir forces PRL 87, 211801 (2001
Page 23 and 24: Quantum limit H=½mv 2 + ½kx 2
Page 25 and 26: Performances Damping Mass sensing
Page 27: Nanobalance nano letters 6, 583 (20
Page 31 and 32: SEM Experiments Ayari et al., Nano
Page 33 and 34: Why did it work ? V R, k C, k Y , m
Page 35 and 36: Why did it work ? Mechanical equat
Page 37 and 38: Why did it work ? Mechanical equat
Page 39 and 40: Summary First observation of self-

(Microsoft PowerPoint - \351coleaNW_ayari2.ppt) - IEMN

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