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Hi Stefan I have few more doubts.while taking force distance curve(we are taking it on bacteria) we used to keep the parameters Z start=-2.5um and varies the Z end value.We have taken f-s curves at different Zend values like 50nm,100nm,300nm,700nm. After that we have plotted force Vs indentation curves.Indentation is d1-d2 d1=sample movement d2=cantilever
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Hi Stefan, I have few more doubts...I have taken force curves on some soft polymer samples (polypropylene,nylon,gls epoxy etc).I have used TESP of 42N/m stiffness and i have got sensor response somwhat same for all the samples..nearly 0.03um/volt....when I calibrated my tip i got stiffness value around 5N/m...which is very less than expected....so can
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Hi Stefan thanks for your reply....I have send the datas in your mail .kindly check... Remya
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Dear Stefan Thank you very much for your comments and suggestions,we have great problems in getting useful results with INNOVA and any help you can give will be much appreciated. We are trying to obtain a range of soft polymer samples.When we get then we will do some indentation works.In the meantime we indent to do the following. 1.Use a flat PTFE
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Hi Stefan I have used sapmles like PTFE, steel and silicon...the sensor response Im getting are 0.0475,0.0152,0.0151 respctively....and the standard modulus values for this samples are 0.5,200 and 112 respectively.....so can u tell me what shd be the sensor response i should get with these samples.....I just want to make sure that im getting correct
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Hi Stefan, Thanks for your reply...Actually the sample i am using is a polymer membrane....so can you give me a rough idea that what should be the stiffness of cantilever i should use to get a better result. Remya
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hi I think slope of the force distance curve should change according to the sample used....but in my machine either my sample is soft or hard it gives same slope....and I will send the screenshot today itself
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hi Iam usind INNOVA ..when I am takindg contact mode force curves ,whatever is my sample my sensor response is not changing....I am getting similar sensor response for both hard and soft samples.. so please give me an advice how it would happen?