کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8038397 | 1518342 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thickness measurement of soft thin films on periodically patterned magnetic substrates by phase difference magnetic force microscopy
ترجمه فارسی عنوان
اندازه گیری ضخامت فیلم های نازک نرم با استفاده از میکروسکوپ نیروی مغناطیسی با فاز اختلاط فازی
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کلمات کلیدی
اندازه گیری ضخامت میکروسکوپ نیروی مغناطیسی، میکروسکوپ نیروی اتمی، دامنه های مغناطیسی دوره ای، باکتری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
The need for accurate measurement of the thickness of soft thin films is continuously encouraging the development of techniques suitable for this purpose. We propose a method through which the thickness of the film is deduced from the quantitative measurement of the contrast in the phase images of the sample surface acquired by magnetic force microscopy, provided that the film is deposited on a periodically patterned magnetic substrate. The technique is demonstrated by means of magnetic substrates obtained from standard floppy disks. Colonies of Staphylococcus aureus adherent to such substrates were used to obtain soft layers with limited lateral (a few microns) and vertical (hundreds of nanometers) size. The technique is described and its specific merits, limitations and potentialities in terms of accuracy and measurable thickness range are discussed. These parameters depend on the characteristics of the sensing tip/cantilever as well as of the substrates, the latter in terms of spatial period and homogeneity of the magnetic domains. In particular, with the substrates used in this work we evaluated an uncertainty of about 10%, a limit of detection of 50-100 nm and an upper detection limit (maximum measurable thickness) of 1μm, all obtained with standard lift height values (50-100 nm). Nonetheless, these parameters can be easily optimized by selecting/realizing substrates with suitable spacing and homogeneity of the magnetic domains. For example, the upper detection limit can be increased up to 25-50μm while the limit of detection can be reduced to a few tens of nanometers or a few nanometers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 136, January 2014, Pages 96-106
Journal: Ultramicroscopy - Volume 136, January 2014, Pages 96-106
نویسندگان
D. Passeri, C. Dong, L. Angeloni, F. Pantanella, T. Natalizi, F. Berlutti, C. Marianecci, F. Ciccarello, M. Rossi,