Philipp Selenschik

9 Questions 6 Answers 0 Followers

Questions related from Philipp Selenschik

What is the electrical resistivity of thin (~ 20 nm) SiO2 films?

Hello, I am searching for the thickness-dependence of the electrical resistivity of thin ( 10 - 100 nm) SiOx films. So far, I found papers from the 1960s that state Fowler-Nordheim tunning into...

30 August 2021 4,923 3 View

What is the emissivity of ethyl acetate?

Hello, in my experiments I use an IR camera with a fixed emissivity of 0.95 to monitor the surface temperature of an evaporating ethyl acetate droplet (1 ml). In order to obtain correct values, I...

09 March 2021 6,305 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

01 March 2021 8,185 2 View

Can two EC50 values with different hill slopes be compared?

Hello, I fit a classical dose response curve Y=Bottom + (Top-Bottom)/(1+10^((LogEC-X)*HillSlope)) to my data (not related to inhibitors etc). The model I use is purely qualitative but it fits...

24 February 2021 8,623 5 View

How does PEG lower the evaporation rate of water?

Hello, in the following article, it was found that increasing concentrations of PEG dissolved in water droplets decrease the evaporation rate of the water. Evaporation from Water−Ethylene Glycol...

05 November 2020 4,796 6 View

Does the rate of water condensation depend on vapor pressure?

Hello, I have built a climatic chamber with +/- 3% (of the relative humidity) and +/- 1 °Cstability. Inside, I cool a slide to the dew point and observe the condensation of water. The higher...

26 October 2020 5,234 3 View

Why does surface roughness enhance (super)hydrophobicity?

Hello, according to Wenzel's model, an increase in surface roughness will also increase the contact angle, but what is the thermodynamic reason for it? Considering the lotus effect, does a...

23 October 2020 9,177 8 View

Nonlinear fit to median instead of mean values?

Hello, my question might be more theoretical. The datasets I currently analyse are not normally distributed (according to shapiro-wilk and kolgomorov-smirnov @ p = 0.05). Therefore, I prefer...

25 September 2020 6,618 8 View

How to deal with in-text citations of multiple pages in one book using the Nature citation style?

Hey, currently I am writing an article using the Nature citation style. However, I have a question on how to cite the same book multiple times (e.g. different chapters/pages of it). I contacted...

01 January 1970 1,173 3 View