In indirect bad gap semiconductor TiO2 and have defects TiO2-x what is the timescale of excitons to do recombnation ?

Please explain in bulk TiO2 and TiO2-x, I want to know EPR recorded at room temperature no signal observed for rutile phase but at 77 K a sharp signal observed that is explained on basis of...

06 July 2018 3,383 0 View

XRD data at different wavelength and CIF data at different wavelength than how to refinement?

If the XRD data is recorded at Wavelength such as =0.688 Angstrom and I want to do refine the parmeter of XRD pattern for that purpose I need CIF file from the data. How I can choose the file...

11 December 2017 5,348 5 View

How many PEO group and PPO group are present in Pluronic F-108 and Pluronic F-127 and P-123?

PEO-PPO-PEO I am confused as the ratio I got i different paers are different as Pluronic F-127 100-65-100 and some where it is written 101-56-101 I need to know about F-108 as written 133-49-133...

11 December 2017 1,658 0 View

How do I calculate and put d-spacing value in electron diffraction in mixed phase system of Titania?

I am having a mixed phase system I want to index a ring pattern of electron diffraction pattern but I am unable to find the value matching. please any one explain. I am attaching here JCPDS of...

07 August 2017 3,201 4 View

How to calculate appropriate Volume value with significant digit ?

If I know the refined cell parameters of XRD pattern with significant digit like a= 3.789456(12) and 9.3345(5) how do I multiply them to get correct value of Volume= a2 c (angstrom) with...

07 August 2017 2,505 8 View

How to write correct wayto represent lattice parameter with significant digit?

05 June 2017 1,842 4 View

What are F- and F+ centres (Farbe centre or color centre ) how they formed ?

Farbe centres in lattice, I need literature to know how theyformed in lattice and how color changed occurs.

04 May 2017 7,598 0 View

How can we calculate (%) how much of UV,Visible and IR light absorb by Metal oxide like Titanium dioxide using Absorbance spectra Plot?

Different sample will absorb different portion of UV,visible and IR portion, Is that possible to calculate the percentage of each portion, how much UV light in (%) is absorbed or visible light or...

03 April 2017 354 3 View

Ytterbium stablized mesoporous titania, why there is so much broad peaks in XRD which sites will be occupied by Ytterbium?

02 March 2017 3,510 4 View

How well ordered Structure like SBA-15, MCM-41 are correlated to show there low angle XRD reflections?

Why small angle XRD pattern shows peaks for hexagonal and cubic symmetric structure like SBA-15, MCM-41. Reflection at 100, 110 and 200

01 February 2017 8,054 1 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

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 3 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

How to find the mode of classified ocean colour images?

Hello, I have classified 10 S3 OLCI images from the same area (althouth not the same size and/or quadrant) and I would like to do a final image using the mode of the pixel of these 10 images. I...

01 March 2021 9,874 3 View

How to threshold an image despite bright lighting, using ImageJ/Fiji?

Hi everyone, I am using Fiji to determine the percentage of the image covered by leaves, branches, or trunk, but i've encountered some difficulty when the sun hits parts of my image like the one...

27 February 2021 1,194 3 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

Trouble with Charting with Google Earth Engine (Technical)?

Hello. I have a problem with the charting in google earth engine. I created an image collection by combining 5 image collections of five parameters and using ee.Join.inner ( ) and .apply ( )...

26 February 2021 7,084 2 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View