What causes contrast inversion in Cathodoluminescence Imaging?

Aman Arora @Aman-Arora-9

27 January 2021 1 2K Report

Is the ''electron beam current'' only parameter responsible for contrast inversion?

E. Vasil'ev

What do you mean by " contrast inversion", explain please.

Badges
Science topic

More Aman Arora's questions See All

Is this a facetotecta nauplius?

This larva was captured using a plankton net in the Persian Gulf during the summer. I believe it may be a Facetotecta nauplius.

08 August 2024 3,746 4 View

Following click reaction in cell lysates, protein is immobile and remains at the top of the gel in SDS-PAGE?

I am using CuBr/THPTA for a click reaction in total cell lysates. I am facing issues with my protein sample in non-reducing SDS-PAGE where it's not migrating properly and most of it remains at the...

29 July 2024 950 4 View

Which filtration method to go for run off water from dirty solar panels to be used again?

We are working on a robot that cleans solar panels using fresh water supply and a rotating brush. We are trying to conserve as much water at possible by recycling the dirty water that is collected...

28 July 2024 5,778 2 View

When making abraxane with Nab tech, why is 9:1 Chloroform&EtOH used as solvents?

Is it the best optimization ratio based on experiments?

22 July 2024 8,170 0 View

Can diamond be grown using molecular beam epitaxy?

22 July 2024 9,755 2 View

How can I use LabVIEW to control of an ethernet-based driver?

Hello everyone, I am new to LabVIEW, right now we need to control the movement of an ethernet-based stage drive. We got the sample code from a collaborator but their instrument is USB-based, so we...

11 July 2024 5,385 2 View

Systematic review meta-analysis paper?

Hi everybody, We are trying to write a systematic review meta-analysis paper. But I could find 19 references. I think 19 references are not enough to do a meta-analysis section and it is better to...

10 July 2024 5,490 5 View

What is the difference between Caputo fractional derivative and conformable fractional derivative?

While working on fractional order derivatives I found the behavior of conformable derivative is different from Caputo fractional derivative. Therefore, I want to know the difference between these...

08 July 2024 4,057 1 View

Do the SHSY5Y cells tend to form multiple layers over each other when highly confluent?

I have attached pics of the SH-SY5Y cells within a seeded plate after reaching >80-90% confluence. Are these dark clumps of multiple growing cell layers? Or dead cells? Any clue? many thanks.

01 July 2024 8,361 3 View

Adding isopropanol directly to eluted RNA samples?

I have my RNA samples eluted in nuclease-free water. But now I want to store it for a longer period. Can I add isopropanol directly to my samples to store it without doing a second round of TriZol...

23 June 2024 2,576 4 View

How can I prepare virus for a TEM or SEM imaging?

I have virus (viral hemorrhagic septicemia virus) in suspension and the experiment will not involve cells. What level of TCID50 is preferred?

11 August 2024 3,115 1 View

1. If I can quantize the atom using this hyperbolic spiral and classical physics, could nature do the same?

If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...

07 August 2024 5,343 2 View

Is there anyone with experience in TEM analysis who can assist with a manuscript for an upcoming journal?

Hello dear colleagues, We have prepared a manuscript on NiTi-based alloys and are seeking a second opinion on our current TEM results. If you are a Ph.D. holder with experience in TEM and have...

07 August 2024 9,563 0 View

Which distribution type should I use when calculating the average particle size from TEM image? and how to calculate the error ?

average particle size calculation from TEM

04 August 2024 2,921 1 View

Why reactivity isn't increased with more empty spots in valence shell?

If from a geometric perspective the non-halogens, non-noble gases have more empty spots in their valence shell, and the filling/exiting of any of the empty spots in the shell constitutes a...

03 August 2024 4,787 2 View

Why is the molecule's orientation with an electric field affect polarizability?

Why is the molecule's orientation with an electric field affect polarizability? Electrons are diffuse enough to be independent with respect to orientation and effect of electric field on...

03 August 2024 7,843 1 View

Why doesn't chromium 2+ ion use all its d-orbitals to receive lone pairs from six waters in [Cr(H20)6)]3+?

I'm guessing it's because the ligand experiences too much electron repulsion or proton repulsion from the chromium to insert them close to the 3d-orbitals which are close to the metal nucleus. Is...

03 August 2024 1,370 1 View

Is it necessary to covary exogenous constructs in a structural model?

I am working on a SEM model where i have 7 latent variables (6 exogenous and 1 endogenous). In AMOS when I co-vary the exogenous constructs, only 2 paths are coming significant out of 6. But when...

03 August 2024 6,028 4 View

Why aren't most metal oxides insoluble in water?

Why BaO (s) + H2O(l) ---> Ba 2+(aq) + 2 OH - (aq) if Oxygen loves owning all the electrons, why would it bind to hydrogen which competes with Oxygen for electron ownership more so than...

03 August 2024 5,392 1 View

Why do paired electrons atoms produce no magnetic field lines?

If you think of electrons with spin as bar magnets, you know bar magnets of opposite polarity as long as they're not occupying the same spatial location don't cancel out each other's magnetic...

03 August 2024 3,927 2 View