In which form multiferroic materials shows better Raman features ? Powder or sintered pellet ?

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How to get rid off from Bismuth deficiency XRD peak from bismuth based perovskite oxides?

How to get rid off from Bismuth deficiency XRD peak from bismuth based perovskite oxides? Even after adding extra 10% bismuth the peak at around 2THETA= 27 deg, is still observed in XRD data.

08 September 2018 1,187 5 View

What is reason for negative dielectric loss ?

I am getting negative dielectric loss at high frequency (2MHtz) which become positive beyond 150 degree Celsius. Is it due to interface problem between electrode and ceramic pellet or something else?

07 August 2018 2,166 5 View

Which aqueous medium is the best for stable and homogeneous DISPERSION of ceramic (PbTiO3) particles for TEM sample preparation ?

Which aqueous medium is the best for stable and homogeneous DISPERSION of ceramic (PbTiO3) particles for TEM sample preparation ? if particle size is in 500 nm range what precautions must be follow?

07 August 2018 1,984 7 View

What else is remained to explain in physics other than God and astrophysical phenomenon ?

Mysteries which are not solved by theoretical physicist or which have confusing theories ? I know there are many in astrophysics but dont want to focus on them now. Is gravity explained and...

06 July 2018 2,162 3 View

What is history behind discovery of planck's constant ?

What is history behind discovery of planck's constant ? I know what is written in text books of quantum theory. I want to know how they have concluded it.

06 July 2018 1,873 7 View

What is difference between lattice and sublattice ?Also provide examples ?

How to understand lattice and sublattice in crystal structure theory of solids ?

06 July 2018 9,016 5 View

What is the physical significance of "Ideality Factor" in solar cells? What is the Ideality Factor in Ferro-electrical Photovoltaic cells?

I am trying to find out the ideality factor in solar cells which are made of ferroelectric materials such as BiFeO3. These devices are not working on p-n junction model. So need to know some basic...

06 July 2018 6,346 15 View

Does Quantum Efficiency of solar cell also depend on crystal structure of absorbing layer ?

Does Quantum Efficiency of solar cells also depend on crystal structure of light absorbing layer of PV device ?

05 June 2018 5,110 5 View

Can we freeze Photons ? is it violating fundamental rules of science and nature ?

Can we freeze Photons ? is it violating fundamental rules of science and nature ? Can we imagine the consequences of freezing light ?

05 June 2018 7,785 0 View

How can we understand difference between open circuit voltage and nanoscale open circuit voltage ?

How can we understand difference between open circuit voltage measured of whole solar cell and nanoscale open circuit voltage using c-AFM?

05 June 2018 3,492 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

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03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

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03 March 2021 3,661 2 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Alexander S Krylov

Generaly, there should not be much difference. However, if you applied pressure to produce a pellet, there may still be residual pressure in the sample, which can cause a shift in the Raman lines or the appearance of new ones. For example you can read

Article Residual mechanical stresses in pressure treated BaTiO3 powder

Chandra Bhal Singh

Thank you very much Dr. Alexander S Krylov