کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
730232 892962 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Accurate determination of spring constant of atomic force microscope cantilevers and comparison with other methods
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Accurate determination of spring constant of atomic force microscope cantilevers and comparison with other methods
چکیده انگلیسی

We present calibration results of commercial AFM cantilevers using the KRISS nanoforce calibrator (NFC) that can determine traceably spring constants with an uncertainty better than 1%, along with the results obtained from other four calibration methods: the dimensional method, the cantilever-on-cantilever method, the Sader method, and the thermal noise method. Two types (contact and tapping mode) of beam-shaped AFM cantilevers with nominal spring constants of 0.9 N m−1 and 42 N m−1, respectively, were investigated in this study. Because of its small uncertainty, the NFC method was used to assess the uncertainties of other four methods through comparisons between values obtained from other methods and those from the NFC method for the same cantilever. Results from other methods were generally in good agreement with those from the NFC method within the uncertainties of other methods claimed in other literatures, but values obtained from the Sader method were differed by up to 40% from the NFC values, which is 2 times worse than the known uncertainty.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 43, Issue 4, May 2010, Pages 520–526
نویسندگان
, , , ,