${session.getAttribute("locale")} 5 Two-dimensional stick-slip on a soft elastic polymer: Pattern generation using atomic force microscopy Wed 23 May 2018 11:50:52 AEST ]]> Surface topography and surface chemistry of radiation-patterned P(tBuMA) - Analysis by atomic force microscopy Wed 22 Jul 2015 10:34:42 AEST ]]> Photo-oxidative degradation in polyisoprene: Surface characterization and analysis by atomic force microscopy Wed 22 Jul 2015 10:34:41 AEST ]]> Poly(amino acids) at Si-oxide interfaces - Bio-colloidal interactions, adhesion and 'conformation' Wed 20 May 2015 16:29:38 AEST ]]> Interactions of poly(amino acids) in aqueous solution with charged model surfaces - Analysis by colloidal probe Wed 20 May 2015 16:22:38 AEST ]]> Friction measurements using force versus distance friction loops in force microscopy Wed 20 May 2015 16:15:37 AEST ]]> Artefacts in non-contact mode force microscopy: The role of adsorbed moisture Wed 08 Jul 2015 14:48:21 AEST ]]> A Scanning Probe Microscopy laboratory designed for early graduate/postgraduate students Wed 01 Apr 2015 16:28:43 AEST ]]> Diamond-like-carbon (DLC) master creation for use in soft lithography using the Atomic Force Microscope (AFM) Tue 27 Sep 2016 08:48:09 AEST ]]> Interactions of poly(amino acids) in aqueous solution with charged model surfaces - Analysis by colloidal probe Tue 20 Aug 2019 11:52:59 AEST ]]> Nano-lithography of polymer surfaces by atomic force microscopy Tue 20 Aug 2019 11:12:07 AEST ]]> Creating Diamond-Like-Carbon (DLC) templates using atomic force microscopy Tue 12 Jan 2016 11:53:15 AEST ]]> Polymeric surface alteration via scanning probe microscopy 4 nNnm-1). The resultant alteration was then analyzed using a soft lever (< 0.1 nNnm-1) to avoid further manipulation and alteration. Lithographic outcomes on a surface are not only dependant on the instrumental parameters (e.g., loading force, orientation and scan speed), but they also depend on the different Young's modulus values of the polymer. It has been demonstrated that at high Young's modulus values (> 5 GPa) no discernable lithographic outcomes have been achieved. At Young's modulus values in the low GPa range (< 2 Gpa), wells, pits and orthogonal grids have be formed. On the other hand, softer polymer surfaces (Young's modulus in the kPa range) induced a stick-slip phenomena. The stick-slip behaviour was observed in both the slow and fast direction of tip travel and was monitored during the manipulation process via friction loop analysis. After the manipulation process, the area was re-scanned using a soft lever revealing uniformly formed parallel channels. Friction loop analysis revealed a progression of the formation of the stick-slip mechanism in the fast scan direction with the lateral forces gradually increasing as the number of traverses increased. The stick-slip features then begin forming and progressing until the characteristic stick-slip features are observed. Just prior to the probe slipping in the slow scan direction, the stick-slip features in the fast scan direction break down completely. The tip then slips and assumes its next equilibrium position, repeating the cycle. Lateral force data obtained on all three polymer surfaces and a calibration silicon surface showed the extent of in-plane deformation and frictional variation. The in-plane displacement (i.e., the vertical slope of the friction loop) was found to increase with a decrease in Young's modulus value which coincides with greater tip trapping, polymer deformation and relaxation. By gradually increasing the loading force, the general trend of the lateral force was observed and plotted. The results are shown in figure 1 below. The lateral force increases linearly with an increase in loading force. As expected, the polyimide and silicon surfaces are comparable due to their Young's modulus values being > ca. 5 GPa. The P( tBuMA) surface shows a greater increase with the PDMS sample showing the most dramatic increase. The three different linear responses for the PDMS surface are shown for the start, middle and end of a stick-slip cycle, with the final breakdown being omitted. A softer surface will lead to greater tip indentation, higher contact area, and therefore a higher lateral force. At higher loading forces, these effects are amplified. (Graph Presented). © 2006 IEEE.]]> Tue 12 Jan 2016 11:53:12 AEST ]]> Actin adsorbed on HOPG and Mica substrates: Characterization and manipulation by atomic force microscopy Tue 12 Jan 2016 11:46:11 AEST ]]> Polystyrene spheres on mica substrates: AFM calibration, tip parameters and scan artefacts Tue 07 Jul 2015 13:13:37 AEST ]]> Removal mechanisms of dew via self-propulsion off the gecko skin Tue 05 Jan 2016 09:26:12 AEST ]]> Hierarchy of DNA immobilization and hybridization on poly-L-lysine using an atomic force microscopy study Thu 28 May 2015 14:01:35 AEST ]]> Micro/nano-architecture of polymers via UV and scanning probe microscopy (SPM): micro- and nano-scale physical & chemical architecture of polymer surfaces by ultra-violet (UV) exposure and scanning probe microscopy (SPM) Thu 26 Mar 2015 14:03:43 AEST ]]> Radiation-patterning of P(tBuMA-co-MMA) thin films for biosensor applications: Characterization by scanning probe microscopy Thu 21 Jan 2016 16:48:50 AEST ]]> AFM analysis of the formation of DNA aggregates on polymeric biochips Thu 21 Jan 2016 16:41:49 AEST ]]> Nano-scale spatially resolved simultaneous measurement of in-plane and out-of-plane force components on surfaces - A novel operational mode in atomic force microscopy Thu 21 Jan 2016 15:59:49 AEST ]]> AFM-based micro/nano-scale lithography of poly(dimethylsiloxane) - Stick-slip on a 'soft' polymer Thu 21 Jan 2016 15:31:48 AEST ]]> Protein folding and unfolding by force microscopy - A novel 'inverse' methodology Thu 21 Jan 2016 15:24:50 AEST ]]> Tip-induced nano-scale manipulation of Si and DLC surfaces: The state of the tip Thu 21 Jan 2016 15:17:49 AEST ]]> Surface modification of MgO substrates from aqueous exposure: An atomic force microscopy study Thu 11 Jul 2019 09:00:40 AEST ]]> Tribology of diamond-like carbon films from generic fabrication routes investigated by lateral force microscopy Thu 11 Jul 2019 09:00:39 AEST ]]> Environmental degradation of YBa2Cu3O7 - x thin films. 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