Peak forces and lateral resolution in amplitude modulation force microscopy in liquid

Guzmán, Horacio Andrés Vargas; García, Ricardo García

doi:10.3762/bjnano.4.96

Cited by 16 publications

(22 citation statements)

References 50 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerical simulations have been used to derive parametric approximations [24], scaling laws [25] and insights about the role of different material properties [25][26][27] in obtaining the maximum force. Simulations can generate maps that provide the estimation of the peak forces for a large variety of conditions [27,28]. The range of applicability of the force reconstruction methods has also been verified by numerical simulations [29].…”

Section: Introductionmentioning

confidence: 93%

Dynamic force microscopy simulator (dForce): A tool for planning and understanding tapping and bimodal AFM experiments

Guzman¹,

Garcı́a²,

García³

2016

Nano Online

Self Cite

View full text Add to dashboard Cite

We present a simulation environment, dForce, which can be used for a better understanding of dynamic force microscopy experiments. The simulator presents the cantilever-tip dynamics for two dynamic AFM methods, tapping mode AFM and bimodal AFM. It can be applied for a wide variety of experimental situations in air or liquid. The code provides all the variables and parameters relevant in those modes, for example, the instantaneous deflection and tip-surface force, velocity, virial, dissipated energy, sample deformation and peak force as a function of time or distance. The simulator includes a variety of interactions and contact mechanics models to describe AFM experiments including: van der Waals, Hertz, DMT, JKR, bottom effect cone correction, linear viscoelastic forces or the standard linear solid viscoelastic model. We have compared two numerical integration methods to select the one that offers optimal accuracy and speed. The graphical user interface has been designed to facilitate the navigation of nonexperts in simulations. Finally, the accuracy of dForce has been tested against numerical simulations performed during the last 18 years.

show abstract

Section: Introductionmentioning

confidence: 93%

Dynamic force microscopy simulator (dForce): A tool for planning and understanding tapping and bimodal AFM experiments

Guzman¹,

Garcı́a²,

García³

2016

Nano Online

Self Cite

View full text Add to dashboard Cite

show abstract

“…One of the latter methods is the estimation of the peak interaction forces [21–23 25–29]. The peak interaction force determines the deformation on the sample and hence the spatial resolution and the degree of invasiveness of the measurement.…”

Section: Introductionmentioning

confidence: 99%

Scaling law to determine peak forces in tapping-mode AFM experiments on finite elastic soft matter systems

Guzman

2017

Beilstein J. Nanotechnol.

Self Cite

View full text Add to dashboard Cite

Analytical equations to estimate the peak force will facilitate the interpretation and the planning of amplitude-modulation force microscopy (tapping mode) experiments. A closed-form analytical equation to estimate the tip–sample peak forces while imaging soft materials in liquid environment and within an elastic deformation regime has been deduced. We have combined a multivariate regression method with input from the virial–dissipation equations and Tatara’s bidimensional deformation contact mechanics model. The equation enables to estimate the peak force based on the tapping mode observables, probe characteristics and the material properties of the sample. The accuracy of the equation has been verified by comparing it to numerical simulations for the archetypical operating conditions to image soft matter with high spatial resolution in tapping-mode AFM.

show abstract

“…Numerical simulations have been used to derive parametric approximations [ 24 ], scaling laws [ 25 ] and insights about the role of different material properties [ 25 – 27 ] in obtaining the maximum force. Simulations can generate maps that provide the estimation of the peak forces for a large variety of conditions [ 27 – 28 ]. The range of applicability of the force reconstruction methods has also been verified by numerical simulations [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic force microscopy simulator (dForce): A tool for planning and understanding tapping and bimodal AFM experiments

Guzmán¹,

García²,

García³

2015

Beilstein J. Nanotechnol.

Self Cite

View full text Add to dashboard Cite

SummaryWe present a simulation environment, dForce, which can be used for a better understanding of dynamic force microscopy experiments. The simulator presents the cantilever–tip dynamics for two dynamic AFM methods, tapping mode AFM and bimodal AFM. It can be applied for a wide variety of experimental situations in air or liquid. The code provides all the variables and parameters relevant in those modes, for example, the instantaneous deflection and tip–surface force, velocity, virial, dissipated energy, sample deformation and peak force as a function of time or distance. The simulator includes a variety of interactions and contact mechanics models to describe AFM experiments including: van der Waals, Hertz, DMT, JKR, bottom effect cone correction, linear viscoelastic forces or the standard linear solid viscoelastic model. We have compared two numerical integration methods to select the one that offers optimal accuracy and speed. The graphical user interface has been designed to facilitate the navigation of non-experts in simulations. Finally, the accuracy of dForce has been tested against numerical simulations performed during the last 18 years.

show abstract

Peak forces and lateral resolution in amplitude modulation force microscopy in liquid

Cited by 16 publications

References 50 publications

Dynamic force microscopy simulator (dForce): A tool for planning and understanding tapping and bimodal AFM experiments

Dynamic force microscopy simulator (dForce): A tool for planning and understanding tapping and bimodal AFM experiments

Scaling law to determine peak forces in tapping-mode AFM experiments on finite elastic soft matter systems

Dynamic force microscopy simulator (dForce): A tool for planning and understanding tapping and bimodal AFM experiments

Contact Info

Product

Resources

About