What is the absorption coefficient and extinction coefficient of ZnSe at 248 nm?

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A 20 fs FWHM transform-limited Gaussian pulse, with carrier wavelength of 1050 nm, goes through 1 meter of fused silica.??

A 20 fs FWHM transform-limited Gaussian pulse, with carrier wavelength of 1050 nm, goes through 1 meter of fused silica. What is the FWHM pulse duration at the end?

10 November 2018 6,464 2 View

Is there any other ways to estimate the crystalite size of because Scherrer's equation to determine the crystallites size is not recommended.??

Is there any other ways to estimate the crystalite size because Scherrer's equation to determine the crystallites size is not recommended. I am looking answer for Single crystalline oriented...

31 December 2017 5,277 3 View

Why MgO (110) and (111) are not effected by heat treatment??

I Did some heat treatment with MgO substrates with (100), (110), (111). I observe significant changes on MgO (100) surface morphology (atomic steps), but other two substrate remain unchanged....

02 March 2017 4,809 3 View

How to calculate the interfacial energy of dielectric substrates??

So my question is related Interfacial enegry calculation.If i have MgO substrate and we deposited Pt thin films on it.. I need to know the MgO surface energy before deposition? is there any...

02 March 2017 5,577 3 View

Why Pt can not be deposited on Si substrate for the application of electrocatalytic applications?

Mostly ceramic substrates (MgO, STO, LaAlO3 etc..) are used to deposit transition Metals (Pt,Ag,Au,Cu) for the electrochemical applications. Why Silicon Substrate can not be used for such...

02 March 2017 7,716 7 View

Why XRD patterns are indicating that Pt (110) and (111) are formed on MgO substrate but AFM shows some inappropriate structures?

Pt films deposited on MgO (110) and (111) were grown , as a result no elongated features and traces on MgO (110) and (111) were observed . Instead it was seen that a disordered 3 dimensional...

31 December 2016 2,214 4 View

How to measure the critical angle in XRR(X-ray reflectometery ) result?

I did XRR analysis to calculate the thickness of thin film. can any body explain what is critical angle in XRR measured graph. and how to measure this critical angle???

11 December 2016 4,849 3 View

Lattice parameter changes by changing the Concentration during alloy formation, does it effect the Morphology of thin films??

For example in NiFe thin films, if the concentration of Ni is change by wt% 33,40,50,60 in Fe .. what are the possible factors that changes the surface morphology (topography) of the thin film for...

10 November 2016 3,018 7 View

By Increasing the substrate temperature (Rt to 600c) we observe increase in the Peak Area graph from XRD 2theta analysis, What does that mean?

The intensity of the Graph is increasing with respect to temperature. If i plot a graph with respect to Area of that peak and temperature I observe also increase in area. what does that mean? If...

10 November 2016 7,599 11 View

How can we estimate about the deposition rate of material of PLD deposited thin films??

If I know the thickness of the film (15nm). How I can justify about the deposition rate of the material ? Which formula or which method?? Please help

10 November 2016 1,976 5 View

How to calculate CCS for Sodiated adduct ions and Multiply Charged Ions?

I'm currently working on calculating the collision cross section (CCS) for various ions, and I'm facing challenges when dealing with sodiated and multiply charged ions. Most of the resources I’ve...

08 August 2024 8,329 0 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Absorption coefficient of methane?

Hello, Can anyone provide me with the absorption coefficient of methane gas at 7.7 um? Any reference?

06 August 2024 980 5 View

How can I add own Henry coefficients in Aspen Plus?

Hi, i would like to simulate an absorption process in Aspen Plus. I want to use the NRTL model und would like to add some individual Henry coefficients. Is that possible and how?

05 August 2024 2,333 2 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View

How to correctly use the UTE and ZTE pulse sequences in Bruker's ParaVision software?

I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...

01 August 2024 9,227 1 View

Mossbauer spectroscopy Co0.6Mn0.4Fe2O4 MNPs?

Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.

31 July 2024 9,140 2 View

¿Are oxygen vacancies in semiconductors capable to change the band gap?

Dear all! Oxygen vacancies do raise negatively the Fermi level by increasing the negative charge in the semiconductor crystal structure. In the case of n-type semiconductors, I wonder if this...

30 July 2024 8,339 2 View

Inquiry on Maximum Nucleic Acid Volume for 2.5 mL Liposome Solution?

I am currently working on a project involving liposomes and need to determine the maximum volume of siRNA that can be added to a 2.5 mL liposome solution with a total lipid concentration of 10...

30 July 2024 6,420 1 View