Marco Salerno

6 Questions 34 Answers 0 Followers

Questions related from Marco Salerno

Excitation of DAPI without UV laser?

Hi there. Can DAPI be excited with 440 nm wavelength? Maybe still a bit of tail is there from the absorption spectrum, yet we are much in the emission spectrum already. Making me think what we get...

22 February 2024 4,708 1 View

SKPM mode of AFM: how to find a standard for 'static' charge?

Hi! I have an Asylum Research MFP-3D and it is written in the manual that SKPM is 'semi-quantitative', meaning that the Po channel during the second (lift) pass measures the 'surface potential' in...

16 February 2020 1,626 6 View

Sorry I can't find the project description (not even a short abstract)?

What are you going to characterize by AFM (type of samples)? Particularly, what AFM technique (eg SKPM, nanoindentation/force-distance spectroscopy)? Regards, MS

28 November 2017 6,651 2 View

Can anyone help with Raman of lipids?

We are trying to make lipid double-layers on different substrates and investigate lipid properties, but in most cases we can't detect the fingerprint band around 2900 cm^-1: we found literature...

10 August 2015 2,714 4 View

In dynamic light scattering, how do I know if particle size is due to aggregates, if aggregation is too fast?

I know that if absolute value of zeta potential >30 mV, the particles are stable. But also aggregates are stable, in the end. Do multiple size population peaks always appear, in the case of...

09 December 2014 5,256 8 View

Use of a DC analog voltmeter as an amperometer?

Is it possible to use a 60V scale voltmeter as an amperometer to read up to 4A or similar? I tried to connect the two entrance poles with an appropriate resistance, just by trial and error, and...

29 July 2014 8,976 3 View