نتایج جستجو برای: afm technique

تعداد نتایج: 621308  

2006
G. Piantanida F. Pinzari M. Montanari M. Bicchieri C. Coluzza

In this study AFM technique has been used to observe the degradation of cellulose fibres in paper samples used as substrata for the growth of a filamentous fungus known to be responsible for damage to art works made from or supported on paper. Images obtained from the analysis of artificially deteriorated samples have been used for comparison with topographies obtained by AFM from naturally aff...

2002
Anh V. NGUYEN Jan HUPKA Jan D. MILLER

Study of interaction forces between mineral particles and air bubbles is a key to understanding flotation processes. Measurement of such interaction forces has only recently been made possible with the introduction of the atomic force microscope (AFM) and the colloidal probe technique. Using AFM, interactions between a single particle attached to the AFM cantilever and an air bubble placed on a...

Journal: :Applied sciences 2022

Accurate and non-destructive technology for detection of subsurface defect has become a key requirement with the emergence various ultra-precision machining technologies application components. The combination acoustic technique sub-surface atomic force microscopy (AFM) measurement high resolution is potential method studying structure workpiece. For this purpose, contact-resonance AFM (CR-AFM)...

Journal: :Applied Surface Science 2021

Atomic force microscopy (AFM) is a powerful technique for accurate, reliable and non-destructive imaging characterization of materials at the nanoscale. Among numerous AFM methods, amplitude modulation or tapping mode (AM-AFM) an established method most commercial systems. Despite its high spatial resolution sensitivity, quantitative by AM-AFM lag behind other advanced methods as far quantifica...

Journal: :Current protein & peptide science 2012
Rhiannon G Creasey Christopher T Gibson Nicolas H Voelcker

The atomic force microscope (AFM) is widely used in biological sciences due to its ability to perform imaging experiments at high resolution in a physiological environment, without special sample preparation such as fixation or staining. AFM is unique, in that it allows single molecule information of mechanical properties and molecular recognition to be gathered. This review sets out to identif...

حسن‌پور, احمد , غریب شاهی, محمد , نیایی فر, محمد ,

In this study, cerium substituted yttrium iron garnet thin films with nominal formulaY3-xCexFe5O12 and different x value  (x = 0,0.1,0.3,0.5,0.7) were fabricated on quartz substrates viasol-gel method and spin coating technique. Samples taken to check physical characteristics. The effect of Ce doping on the structural properties , surface morphology and magnetization of the films were studied r...

Journal: :The journal of physical chemistry. B 2006
Jr H He Ju H Hsu Chun W Wang Heh N Lin Lih J Chen Zhong L Wang

An approach is demonstrated for growing aligned ZnO nanowire/nanorod arrays following a predesigned pattern and feature with controlled site, shape, distribution, and orientation. The technique relies on an integration of atomic force microscopy (AFM) nanomachining with catalytically activated vapor-liquid-solid (VLS) growth. The pattern and growth locations are defined by the catalyst distribu...

Nickel films of 150 nm thickness were deposited on 304 stainless steel and post annealed under flow of nitrogen at different temperatures. The prepared samples were corrosion tested in 1.0 M H2SO4 solution using potentiodynamic polarization technique. Crystallographic and morphological structure of the samples were analysed by X-ray diffraction XRD and atomic force microscopy AFM respectively b...

2001
M. LABARDI M. ALLEGRINI

A method for sensing the dissipation occurring when a sharp atomic force microscopy (AFM) tip is oscillated laterally above a surface at distances typical of non-contact mode AFM operation is established and demonstrated. Dissipation is detected by measuring the damping of lateral resonant modes of the AFM cantilever, excited independently after the lateral resonant mode identification, when th...

2002

9.1 Chapter Summary Approximately thirty years after their preparation, the nanoscale morphology of a series of ‘model’ segmented polyurethane elastomers has been further elucidated using the technique of tapping mode AFM. The materials investigated are based on 1,4-butanediol extended piperazine based hard segments and employ poly(tetramethylene oxide) soft segments. The chemistry of these pol...

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