Browsing by Subject "Atomic force microscopy"
Now showing items 1-20 of 42
-
Advances in dynamic AFM: from nanoscale energy dissipation to material properties in the nanoscale
(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 ... -
AFM in peak force mode applied to worn siloxane-hydrogel contact lenses
(2015-02-01)
Article
Open Access -
Anharmonicity in multifrequency atomic force microscopy
(2014-07)
Research report
Open AccessIn multifrequency atomic force microscopy higher eigenmodes are externally excited to enhance resolution and contrast while simultaneously increasing the number of experimental observables with the use of gentle forces. ... -
ATOMIC FORCE MICROSCOPY STUDY OF UROLITHIASIS EVOLUTION IN SPACE CREWS DURING LONG-TERM MISSIONS
(Universitat Politècnica de Catalunya, 2009-07-16)
Master thesis
Open Access -
Cantilever dynamics in amplitude modulation AFM: continuous and discontinuous transitions
(2010-06-21)
Article
Open AccessTransitions between the attractive and the repulsive force regimes for amplitude modulation atomic force microscopy (AFM) can be either discontinuous, with a corresponding jump in amplitude and phase, or continuous and ... -
Capacitive tunnels in single-walled carbon nanotube networks on flexible substrate
(American Institute of Physics (AIP), 2012-03-15)
Article
Open AccessWe report the analysis of single-walled carbon nanotube networks, which are expected to be suitable as miniaturized flexible radio frequency RC filters and also have important implications for high frequency devices. The ... -
Characterization of Langmuir and Langmuir-Blodgett films of an octasubstituted zinc phthalocyanine
(2014-04-01)
Article
Open AccessIn this work we report the fabrication of Langmuir and Langmuir-Blodgett (LB) films of a substituted ZnPc (octakis(oxyoctyl) phthalocyanine of zinc), and their characterization by means of several techniques. These ... -
Chemical milling of cast Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo alloys in hydrofluoric-nitric acid solutions
(2017-04-01)
Article
Restricted access - publisher's policyThe behavior of cast Ti-6Al-4V and Ti-6Al-2Sn-4Zr-2Mo during chemical milling in hydrofluoric-nitric (HF-HNO3) acid solutions with 1:3 and 1:11 molar ratios was investigated using electrochemical and atomic force microscopy ... -
Corrosion induced degradation of textured YBCO under operation in high humidity conditions
(2012-05-25)
Article
Restricted access - publisher's policyThe early stages of aggressive degradation at 85% of humidity for 24 h of single crystals of YBa2Cu3O7 − δ textured by Bridgman technique have been analyzed by means of atomic force microscopy, X-ray photoelectron spectroscopy, ... -
Deconstructing the governing dissipative phenomena in the nanoscale
(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, ... -
Different Organization of Type I Collagen Immobilized on Silanized and Nonsilanized Titanium Surfaces Affects Fibroblast Adhesion and Fibronectin Secretion
(2015-09-23)
Article
Open Access
Covenantee: University of GlasgowSilanization has emerged in recent years as a way to obtain a stronger and more stable attachment of biomolecules to metallic substrates. However, its impact on protein conformation, a key aspect that influences cell ... -
Distinguishing between mechanical and electrostatic interaction in single pass multi frequency electrostatic force microscopy measurements on a molecular material
(2016-11)
Article
Open AccessSingle-pass electrostatic force microscopy is postulated as one of the most advanced techniques in terms of spatial resolution and fastness in data acquisition for the study of electrostatic phenomena at the nanoscale. ... -
Energy dissipation in the presence of sub-harmonic excitation in dynamic atomic force microscopy
(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. ... -
Enhanced sensitivity and contrast with bimodal atomic force microscopy with small and ultra-small amplitudes in ambient conditions
(2013-12-02)
Article
Open AccessHere, we introduce bimodal atomic force microscopy operated with sub-nm and ultra-small, i.e., sub-angstrom, first and second mode amplitudes in ambient conditions. We show how the tip can be made to oscillate in the ... -
Establishing nanoscale heterogeneity with nanoscale force measurements
(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 ... -
Estudi del comportament a fricció d’aliatges de titani mitjançant microscòpia de força atòmica
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open Access
Covenantee: SEAT S.A.El present Treball de Fi de Grau amb títol “Estudi del comportament a fricció d'aliatges de titani mitjançant microscòpia de força atòmica” s’ha realitzat en el departament de ciència dels materials i enginyeria metal·lúrgica ... -
Fano-like resonances in nanostructured thin films for spatial filtering
(2021-03-29)
Article
Restricted access - publisher's policyFano-like resonant coupling of electromagnetic radiation with planar waveguiding modes of nanostructured thin films is proposed and realized experimentally. Different from conventional Fano coupling to compact resonators ... -
In vitro evaluation of surface topographic changes and nickel release of lingual orthodontic archwires
(2010-02)
Article
Restricted access - confidentiality agreementThe objective of the article is to study surface topographic changes and nickel release in lingual orthodontic archwires in vitro. Stainless steel (SS), nickel–titanium (NiTi) and copper–nickel–titanium (CuNiTi) ... -
Interaction of silver-lignin nanoparticles with mammalian mimetic membranes
(Frontiers Media SA, 2020-05-08)
Article
Open AccessSilver nanoparticles (AgNPs) have broad spectrum antibacterial activity, but their toxicity to human cells has raised concerns related to their use as disinfectants or coatings of medically relevant surfaces. To address ... -
Involvement of mechanical cues in the migration of Cajal-Retzius cells in the marginal zone during neocortical development
(Frontiers Media SA, 2022-05-16)
Article
Open AccessEmerging evidence points to coordinated action of chemical and mechanical cues during brain development. At early stages of neocortical development, angiogenic factors and chemokines such as CXCL12, ephrins, and semaphorins ...
