کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7144852 | 1462068 | 2016 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of surface morphology on desorption kinetics of water molecules from uncoated silicon microcantilever
ترجمه فارسی عنوان
نقش مورفولوژی سطح بر روی سینتیک جذب مولکول های آب از میکروسکوپ سیلیکونی بدون پوشش
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Desorption kinetics of water molecules from uncoated silicon microcantilevers (MC) is studied, by measuring resonance frequency, with Relative Humidity (RH) varying in the range of 50-15%. Shift in resonance frequency of MC was used to estimate the desorbed mass, which over-estimated the number of monolayers desorbed between the RH values of interest and followed a single exponential decay model. Moreover, desorption rate is found to be higher for RHÂ >Â 25% compared to RHÂ <Â 25%. However, the Q factor describing the sensitivity of the MC and computed from the resonance spectrum is found to decrease by â¼3%. These results are explained on the basis of complex surface coverage during desorption of water molecules and is supported by topographical image of MC surface clearly showing quasi 3D nanofeatures. The bending of uncoated MC during desorption, due to the generation of differential surface stress, further confirms the presence of these surface features.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 223, February 2016, Pages 35-39
Journal: Sensors and Actuators B: Chemical - Volume 223, February 2016, Pages 35-39
نویسندگان
M. Raghuramaiah, K. Prabakar, S. Tripura Sundari, J. Jayapandian,