| Autor: |
K.S. Demirci, Luke A. Beardslee, S. Truax, J.-J. Su, C. Carron, Oliver Brand |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
2011 16th International Solid-State Sensors, Actuators and Microsystems Conference. |
| DOI: |
10.1109/transducers.2011.5969584 |
| Popis: |
This paper introduces a new approach to investigate polymer sorption kinetics by weighing the polymer films using micromachined in-plane resonators. A custom gas-testing setup enables fast analyte concentration changes, which are necessary to study analyte diffusion into thin polymer coatings deposited on top of the microresonators. Short-term frequency stabilities of the microresonators in the 10−8 range in air yield sub-picogram mass resolution and enable real-time measurement of analyte uptake into µm-thick films with time constants ranging from seconds to minutes. As an example, the diffusion of alcohols and aromatic hydro-carbons into poly(epichlorohydrin) and poly(isobuty-lene) films, which are of interest for chemical sensing applications, has been investigated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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