Edgar J. Patiño

10 Questions 12 Answers 0 Followers

Questions related from Edgar J. Patiño

What is the correct way to calculte the wave lenght of visible light in metals?

This should be a simple question. Given the real part of the refractive index n′ for Silver, approximately 0.05, and applying the relationship for the wavelength inside a material, λ=λ0/n',...

09 February 2024 3,308 1 View

Is there a way to use MOKE for liquid or discontinous magnetic samples such as powders for example?

It is well known the use of MOKE to characterize solid or thin flat continuous magnetic samples. For samples in liquid phase, discontinous or powder samples this is clearly not an easy task given...

18 May 2021 3,354 1 View

Cooper pair correlation time?

It is well known that electrons form Cooper pairs in a BCS superconductor. Thermal fluctuations should lead to pair creation and annihilation. This means the survival time for each of the pairs...

21 April 2020 7,876 0 View

How to meassure ion milling rate in real time?

Ion milling process allows to eliminate atomic layers from a sample. In order to know the milling rate, in the same way as sputtering one can fix the power and thus more or less expect a constant...

10 March 2020 6,512 5 View

How difficult is to determine experimentally the plasma frequency of a material?

It is well known plasma frequency is a relevant material parameter, how difficult or easy is to have a direct experimental determination of such parameter?

28 June 2019 1,337 3 View

Anyone familiar with oxidation in air versus pure oxygen oxidation?

Our experience shows it is slightly easier way to oxidize Aluminum in air (natural oxidation) at room temperature and atmospheric pressure. Nevertheless a number of authors use just pure oxygen in...

03 September 2015 1,567 7 View

How do I estimate acoustical phonon frequency of Al2O3 from optical phonon value?

I am trying to find experimental value of acoustical phonon frequency of Al2O3. In the literature I found the most intense longitudinal optical bulk phonons is reported to be around kn=871 cm-1,...

02 May 2015 1,093 8 View

Does anyone have ideas on how to estimate maximum dissipation power before a Al/Al2O3/Al _metal tunnel junction burns up?

My Al/Al2O3/Al junctions easily burns up, specially when I change dimensions. Can anyone give me a hint on how to estimate the maximum current or voltage that can go through without damaging them?

18 March 2015 7,224 3 View

In the plasmon resonance regime, do you get to modify the the electrons plasma natural frequency at the metal dielectric interface?

Can it be compared with a driven harmonic oscillator?

08 October 2014 6,567 2 View

What is the function of the prism in the Kretschmann configuration (for plasmon resonance experiments) apart from deviating light?

It is usual to use a prism in plasmon resonance experiments given its larger refractive index equal to 1.5 compared to air equal to 1. Also the prism deviates the light. Apart from this is there...

25 July 2014 957 8 View