کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10410403 | 894437 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nonexponential relaxations in sensor arrays: forecasting strategy for electronic nose performance
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
On the base of analysis of the response kinetic peculiarities the physical mechanisms were considered, which determines the peculiarities of the adsorption-desorption processes at the interface. It was shown that adsorption of molecules from complex mixtures decays nonexponentially in general: in a “weak” adsorbers films it is exponential and approaches a stretched exponential for “strong” adsorbers film. Moreover the stretched exponentiality in adsorption-desorption processes can be described in terms of probabilistic model of relaxation based on the self-similarity of distributed random transition rates. We have demonstrated the first application of the stretched exponential low for nonexponential relaxations of QCM sensors with organic sensitive layers. There is a good agreement between molecular structure of materials, interfacial dynamics of sensors and discrimination ability of massifs thereon.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 106, Issue 1, 29 April 2005, Pages 101-113
Journal: Sensors and Actuators B: Chemical - Volume 106, Issue 1, 29 April 2005, Pages 101-113
نویسندگان
B.A. Snopok, I.V. Kruglenko,