David Feldmann

4 Questions 6 Answers 0 Followers

Questions related from David Feldmann

Why it is recommended to add salt to milliQ water when measuring zeta potential?

Particle zeta potential is measured by analyzing their electrophoretic mobility. It was recommended not to use simple milliQ water but to add at least some mM of KCl or other salt to the solution....

12 December 2017 6,373 15 View

Where can I find/buy micro-particles with defined porosity?

We are looking for porous particles of around 5 micron size, preferably with made of silica but polymeric or inorganic materials could be interesting as well. They are going to be dispersed in...

02 February 2017 7,036 3 View

Which dye absorbs in UV (355nm) and transfers it to heat instead of fluorescence?

I am looking for a dye that dissolves in water but not in oil and absorbs light around 355nm. Heat should be created and it should not fluoresce. Do you have any suggestions? It should avoid oil...

04 April 2016 9,736 2 View

How can I calculate the shift of the plasmon resonance peak of a half-gold-coated silicon nanoparticle?

The plasmon peak shifts of Janus particles will be measured. A comparison to theory would be good.

10 October 2013 6,700 3 View