Change of intensity with doping?

Dear Researchers, I have my samples SnO2 doped with with Cu (1, 2, & 4%). The peak intensity reduces in XRD for 1 and 2%. However, for 4% additional peaks appears which I believe is due to...

05 June 2019 4,806 3 View

CNT-metal oxide combo?

Dear Researchers, Since CNT is not soluble in standard solvents like DI water, ethanol etc, how do I make a doping/composite of CNT and metal oxide. Your suggestions will be highly appreciated....

05 June 2019 6,386 2 View

How to measure the amount of sample (quantum dots) in a solvent?

I have quantum dots dispersed a solvent. If I am considering 2 ml of the solvent, then how do I find out how much is the amount of sample in that solvent? I tried drying the sample to obtain...

03 April 2019 4,333 8 View

Which solvent to dissolve Co3O4 and NiO?

Some literature and RG search mentions a acid solution for dissolving Co3O4 and NiO. Also, for Co3O4 I tried a basic medium of pH 10, but was unable to dissolve. I am not sure incase I am using...

10 November 2018 4,297 0 View

SAED Image analysis?

Dear Sir/Mam, Considering the scale, we measure the distance between the centre and the bright spot of the diffraction pattern. This should tally with the reciprocal of the d-spacing and the...

07 August 2018 3,371 2 View

High temperature hydrothermal reactor?

Kindly let me know the details along with an image of a high temperature hydrothermal reactor operating at 400c to 500c. Thanks and regards

06 July 2018 5,765 3 View

Measurement of Size of Quantum dots?

Dear Sir/Mam, I have synthesized some quantum dots suspended in solvent (DI water) . I am interested in finding the size of those dots. One way would be offcourse HRTEM. But I am interested in...

05 June 2018 8,740 3 View

Synthesis of Graphene Oxide - not by Hummers method?

I am interested in synthesizing Graphene Oxide but not by Hummers method. If any one can suggest from his/her expertise. Also, does other method or even Hummer method ensure a good quality. Also...

05 June 2018 2,962 0 View

Screen printers and gas sensing setup?

Dear Sir/Mam/Colleague, What kind of Screen Printers do I use to deposit thin films? If possible provide me with a link of the description of the instrument. Also, what will be the approximate...

09 October 2017 9,136 0 View

Writing a project?

I worked on metal oxides and its application for gas sensors. Now I intend to write a project, and found Bio-sensors (using metal oxide) as a very interesting project. My doubt lies, whether the...

07 August 2017 5,478 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

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

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View