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Hi, Lauren, Generally speaking, you got different deformation on the mixed sample and you just need to use different tip radius corresponding to the particular deformation for the modulus calculation. Though ideally it would be the best if you can control the deformation depth rather than the force for the most accurate measurement. For the particular
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Hi, Iman, you definitely can use scanasyst-fluid probe, just calibrate in the same way as other probes and half angle might be slightly different from DNP as well. Ang Li
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Hi, a wrong deflection sens will lead to a wrong spring constant calibration, and your deflection sens of 1000nm/v looks very likely wrong (usually deflectioni sens <100nm/v). you may try deflection calibration again. if you still get an odd number like this, you may share more information on your calibration procedure for further discussion. Ang
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Hi, Alex, do you mean NONE has to be applied to height as well as modulus to avoid the commonly seen instable phenomenon as you described? Should we set the default plane fit to NONE to all the channels in next release of real time software to avoid this? Ang Li
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the image is not shown, can you send a copy to my email to take a look? Thanks! My email is ang.li@bruker-nano.com Ang Li
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Dear Igor, The abstract looked pretty interesting and thanks for bringing the proof. Is it possible you send me a soft copy of the full text to ang.li@bruker-nano.com , I am very keen to have a comprehensive read of the paper. Thanks! Ang Li
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you may try the 'span panes' icon. Ang Li
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Hi, Iman, you need to update tip half angle under modify force parameters first before you can use sneddon model. Ang Li
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Hi, you can calibrate deflection sens and spring constant in water on a flat and hard surface, for soft cantilever like scanasyst fluid, a glass sample should be ok for this calibration. tip radius can be done after exp in air. I would suggest you run single point force ramp to measure the modulus of hydrogel amd the new analysis software is quite convenient
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if only tip heated up, you would see setpoint drift or z scanner drift, but if it's xy drift, I guess it is quite possible your sample is heated up. Ang Li