Synchronous imaging for rapid visualization of complex vibration profiles in electromechanical microresonators
| Autor: | Yoav Linzon, Halrod G. Craighead, Daniel J. Joe, Jeevak M. Parpia, Juraj Topolancik, Slava Krylov, Bojan Ilic |
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| Rok vydání: | 2011 |
| Předmět: |
010302 applied physics
Physics PACS - 87.64.-t 07.10.Cm 85.85.+j 05.45.-a Condensed Matter - Mesoscale and Nanoscale Physics Acoustics General Physics and Astronomy FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 3. Good health Computer Science::Other Vibration symbols.namesake Complex dynamics Resonator Amplitude Buckling Normal mode 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Euler's formula symbols 0210 nano-technology Ambient pressure |
| DOI: | 10.48550/arxiv.1110.6760 |
| Popis: | Synchronous imaging is used in dynamic space-domain vibration profile studies of capacitively driven, thin n+ doped poly-silicon microbridges oscillating at rf frequencies. Fast and high-resolution actuation profile measurements of micromachined resonators are useful when significant device nonlinearities are present. For example, bridges under compressive stress near the critical Euler value often reveal complex dynamics stemming from a state close to the onset of buckling. This leads to enhanced sensitivity of the vibration modes to external conditions, such as pressure, temperatures, and chemical composition, the global behavior of which is conveniently evaluated using synchronous imaging combined with spectral measurements. We performed an experimental study of the effects of high drive amplitude and ambient pressure on the resonant vibration profiles in electrically-driven microbridges near critical buckling. Numerical analysis of electrostatically driven post-buckled microbridges supports the richness of complex vibration dynamics that are possible in such micro-electromechanical devices. Comment: 7 pages, 8 figure, submitted to Physical Review A |
| Databáze: | OpenAIRE |
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