Browsing by Author "Chiesa, Matteo"
Now showing items 1-14 of 14
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Advances in dynamic AFM: from nanoscale energy dissipation to material properties in the nanoscale
Santos Hernández, Sergio; Gadelrab, Karim Raafat; Lai, Chia-Yun; Olukan, Tuza; Font Teixidó, Josep; Barcons Xixons, Víctor; Verdaguer Prats, Albert; Chiesa, Matteo (2021-04-02)
Article
Open AccessSince the inception of the atomic force microscope (AFM), dynamic methods (dynamic atomic force microscopy) have been very fruitful by establishing methods to quantify dissipative and conservative forces in the nanoscale ... -
Deconstructing the governing dissipative phenomena in the nanoscale
Santos Hernández, Sergio; Amadei, Carlo Alberto; Tang, Tzu-Chieh; Barcons Xixons, Víctor; Chiesa, Matteo (2014-01)
Research report
Open AccessAn expression describing the controlling parameters involved in short range nanoscale dissipation is proposed and supported by simulations and experimental findings. The expression is deconstructed into the geometrical, ... -
Energy dissipation in the presence of sub-harmonic excitation in dynamic atomic force microscopy
Chiesa, Matteo; Gadelrab, Karim Raafat; Verdaguer, Albert; Segura, Juan José; Barcons Xixons, Víctor; Thomson, Neil H.; Phillips, M.A.; Stefancich, M.; Santos Hernández, Sergio (2012-09)
Article
Open AccessAmplitude modulation atomic force microscopy allows quantifying energy dissipation in the nanoscale with great accuracy with the use of analytical expressions that account for the fundamental frequency and higher harmonics. ... -
Establishing nanoscale heterogeneity with nanoscale force measurements
Chang, Yun-Hsiang, Yun-Hsiang; Olukan, Tuza; Lai, Chia-Yun; Santos, Sergio; Lin, Tze-Yu; Apostoleris, Harry; Font Teixidó, Josep; Barcons Xixons, Víctor; Chiesa, Matteo (2015-08-13)
Article
Open AccessEstablishing the presence or absence of nanoscale compositional heterogeneity with nanoscale resolution is becoming instrumental for the development of many fields of science. Force versus distance measurements and parameters ... -
Investigation of nanoscale interactions by means of subharmonic excitation
Santos Hernández, Sergio; Phillips, M.A.; Verdaguer, Albert; Font Teixidó, Josep; Chiesa, Matteo; Gadelrab,, K.; Stefancich, M.; Armstrong, P.; Li, G.; Souier, T.; Thomson, Neil H.; Barcons Xixons, Víctor (2012-08-16)
Article
Restricted access - publisher's policyMultifrequency atomic force microscopy holds promise as a method to provide qualitative and quantitative information about samples with high spatial resolution. Here, we provide experimental evidence of the excitation of ... -
Periodicity in bimodal atomic force microscopy
Lai, Chia-Yun; Barcons Xixons, Víctor; Santos, Sergio; Chiesa, Matteo (American Institute of Physics (AIP), 2015-07-28)
Article
Open AccessPeriodicity is fundamental for quantification and the application of conservation principles of many important systems. Here, we discuss periodicity in the context of bimodal atomic force microscopy (AFM). The relationship ... -
Probing power laws in multifrequency AFM
Santos, Sergio; Gadelrab, Karim Raafat; Olukan, Tuza; Font Teixidó, Josep; Barcons Xixons, Víctor; Chiesa, Matteo (2023-02-17)
Article
Open AccessQuantification of conservative forces in multifrequency atomic force microscopy requires solving the general equations of the theory expressed in terms of the virials of interaction. Power law expressions are commonly ... -
Quantification of dissipation and deformation in ambient atomic force microscopy
Santos Hernández, Sergio; Gadelrab,, K.; Barcons Xixons, Víctor; Stefancich, M.; Chiesa, Matteo (2012-07-20)
Article
Restricted access - publisher's policyA formalism to extract and quantify unknown quantities such as sample deformation, the viscosity of the sample and surface energy hysteresis in amplitude modulation atomic force microscopy is presented. Recovering the ... -
Should humans work?
Santos Hernández, Sergio; Kissamitaki, Martisa; Chiesa, Matteo (2020-02-01)
Article
Open AccessShould humans work? A simple question at a time when the advent of AI, automation and robotics claims a privileged position in the future of work. The question is perplexing and confusing however once we enquire into the ... -
Single cycle and transient force measurements in dynamic atomic force microscopy
Gadelrab, Karim Raafat; Santos, Sergio; Font Teixidó, Josep; Chiesa, Matteo (2013-11-21)
Article
Open AccessThe monitoring of the deflection of a micro-cantilever, as the end of a sharp probe mounted at its end, i.e. the tip, interacts with a surface, forms the foundation of atomic force microscopy AFM. In a nutshell, developments ... -
Single-cycle atomic force microscope force reconstruction: Resolving time-dependent interactions
Santos Hernández, Sergio; Gadelrab, Karim Raafat; Font Mateu, Josep; Chiesa, Matteo (2013-08)
Article
Open AccessHere, we enhance the capabilities of the atomic force microscope (AFM) to show that force profiles can be reconstructed without restriction by monitoring the wave profile of the cantilever during a single oscillation ... -
Spatial horizons in amplitude and frequency modulation atomic force microscopy
Font Teixidó, Josep; Santos Hernández, Sergio; Barcons Xixons, Víctor; Thomson, Neil H.; Verdaguer, Albert; Chiesa, Matteo (2012-01-26)
Article
Open AccessIn dynamic atomic force microscopy (AFM) the cantilever is vibrated and its dynamics are monitored to probe the sample with nanoscale and atomic resolution. Amplitude and frequency modulation (AM and FM) atomic force ... -
Subharmonic excitation in amplitude modulation atomic force microscopy in the presence of adsorbed water layers
Santos Hernández, Sergio; Barcons Xixons, Víctor; Verdaguer, Albert; Chiesa, Matteo (American Institute of Physics (AIP), 2011-12-02)
Article
Open AccessIn ambient conditions, nanometric water layers form on hydrophilicsurfaces covering them and significantly changing their properties and characteristics. Here we report the excitation of subharmonics in amplitude modulation ... -
The Mendeleev-Meyer force project
Santos Hernández, Sergio; Lai, Chia-Yun; Amadei, Carlo Alberto; Gadelrab, Karim Raafat; Tang, Tzu-Chieh; Verdaguer Prats, Albert; Barcons Xixons, Víctor; Font Teixidó, Josep; Colchero, Jaimer; Chiesa, Matteo (2016-10-28)
Article
Open AccessHere we present the Mendeleev–Meyer Force Project which aims at tabulating all materials and substances in a fashion similar to the periodic table. The goal is to group and tabulate substances using nanoscale force footprints ...