Publication

Frequency stability of PZE actuated suspended micro-channel resonators

2017
Talks

Abstract

We show the fabrication and characterization of a new generation of suspended microchannel resonators (SMRs) with integrated piezoelectric (PZE) actuation. We study resonance frequency, quality factor and frequency stability of singly-clamped hollow devices. Measurements of empty devices in air and vacuum show no significant difference in the frequency stability whereas the quality factor differs by a factor of 19x. The same analysis are performed when the SMRs are filled with DI water. In this case the quality factor between air and vacuum environment differs 11x, while the frequency stability is almost identical for integration times below 300 ms. This independence of the frequency stability on the quality factor suggests that vacuum encapsulation is not strictly necessary in order to achieve state of the art sensing performances when analyzing fluidic samples, ultimately simplifying the experimental setup.

Official source

https://infoscience.epfl.ch/entities/publication/1372e9fb-af31-4727-b1ff-c877c98b63c8

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2017
Talks

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/1372e9fb-af31-4727-b1ff-c877c98b63c8

About this result

Related concepts (32)

Performance art

Performance art is an artwork or art exhibition created through actions executed by the artist or other participants. It may be witnessed live or through documentation, spontaneously developed or written, and is traditionally presented to a public in a fine art context in an interdisciplinary mode. Also known as artistic action, it has been developed through the years as a genre of its own in which art is presented live. It had an important and fundamental role in 20th century avant-garde art.

Quality control

Quality control (QC) is a process by which entities review the quality of all factors involved in production. ISO 9000 defines quality control as "a part of quality management focused on fulfilling quality requirements". This approach places emphasis on three aspects (enshrined in standards such as ISO 9001): Elements such as controls, job management, defined and well managed processes, performance and integrity criteria, and identification of records Competence, such as knowledge, skills, experience, and qualifications Soft elements, such as personnel, integrity, confidence, organizational culture, motivation, team spirit, and quality relationships.

Q factor

In physics and engineering, the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is. It is defined as the ratio of the initial energy stored in the resonator to the energy lost in one radian of the cycle of oscillation. Q factor is alternatively defined as the ratio of a resonator's centre frequency to its bandwidth when subject to an oscillating driving force. These two definitions give numerically similar, but not identical, results.

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Frequency stability of PZE actuated suspended micro-channel resonators

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