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CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Laboratoire de Chimie Physique et Microbiologie pour l’Environnement 405, rue de Vandoeuvre Tél. +33 (0)3 83 68 52 20 54600 VILLERS-LES-NANCY Fax +33 (0)3 83 27 54 44 1 Caractérisation physico-chimique de surfaces anti-bactériennes par spectroscopie de force Projet présenté
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Hi Sontony42, What kind of tips and sample are you looking at? I assume everything worked before and you changed something. What happens when you try aligning e.g. an RTESPA and try scanning the supplied calibration grid in TappingMode? Regards, Stefan
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Hi Younglin, You have to first upload the image to "my files" on the nanoscale world. The you can use the "insert media" icon to select that file for appearing in a post. Regards, Stefan
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Hi Aarthi, Let me take a stab at this: Before performing force curves make sure that i) You select "relative movements" and turn the "linearizer, closed loop z" on. Realtive movements will relate all distances you type into the SW to the actual z-position at setpoint, i.e. the z-position at setpoint is set as "zero" and
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Hi Benoit, For attaching particles to tipless cantilevers this receipe posted by Johannes is proven: http://nanoscaleworld.bruker-axs.com/nanoscaleworld/forums/p/416/694.aspx#694 Stefan
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All, We are searching for a good engineer to join service team here in Karlsruhe immediately. Please forward me any engineer or PhD students CV’s you might have that fits the role and pass on the word to your contacts. A good gift will be given to you if we hire through your recommendation J Please see the job description below. Fine with German
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Hi Wang Shuo, The forces related to the (liquid) adhesion layer on surface in air are quite large indeed and therefore often dominate your signal. Stefan
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Hi Wang Shuo, The instabilities in the force curve where the cantilever suddenly accelerates towards the surface ("snap in") and releases from the surface ("pull off") are caused by attractive forces overcoming the spring force of the cantilever. This can happen in air and fluids. In air these regions are more pronounced as you have
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A few months ago, we launched a BMC topic called “Amyloid fibrils” based on a work by Jozef Adamcik and Raffaele Mezzenga. I’d like to inform you that the team recently released additional papers on the same topic: - Measurement of intrinsic properties of amyloid fibrils by the peak force QNM method (Adamcik et al, Nanoscale, 2012
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Original question was: "Can you apply AFM to read the sequence of RNA or protein?" In the nineties, I remember some researchers started working on oligonucleotides on AFM tip. For instance they put AAA sequences on the surface and the corresponding TTT sequences on the tip. Then they did the same with GGG / CCC and found that the interaction