High-frequency micromechanical columnar resonators
| Autor: | Peter Bozek, B. Radzio, J. Kehrbusch, Egbert Oesterschulze, E. A. Ilin |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Fabrication Cantilever Focus Papers Silicon Analytical chemistry Inverse chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Resonator Quality (physics) Flexural strength Square root chemistry General Materials Science Composite material 0210 nano-technology |
| Popis: | High-frequency silicon columnar microresonators are fabricated using a simple but effective technological scheme. An optimized fabrication scheme was invented to obtain mechanically protected microcolumns with lateral dimensions controlled on a scale of at least 1 μm. In this paper, we investigate the influence of the environmental conditions on the mechanical resonator properties. At ambient conditions, we observed a frequency stability δf/f of less than 10−6 during 5 h of operation at almost constant temperature. However, varying the temperature shifts the frequency by approximately −173 Hz °C− 1. In accordance with a viscous damping model of the ambient gas, we perceived that the quality factor of the first flexural mode decreased with the inverse of the square root of pressure. However, in the low-pressure regime, a linear dependence was observed. We also investigated the influence of the type of the immersing gas on the resonant frequency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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