How come values for elements on periodic table discovered by early scientists vividly agree with d experimental results proposed by modern scientists?

Even as the earlier scientist never had access to sophisticated laboratories as we now have these days. They were able to discover all the elements in the periodic table and gave us different...

03 April 2016 6,351 0 View

How do I calculate or determine the size distribution of SEM images with the software ImageJ or any other software?

I have the AFM and SEM images of PANI, Graphene and PANI-Graphene samples. Kindly assist with any idea how I could determine the size distribution of these samples from the SEM or AFM...

04 May 2015 2,393 6 View

How can I deposit graphene-PANI and graphene-PPy through Electrochemical deposition method using a Potentiostat?

I have graphene nanoparticles dispersed in water + SDBS surfactant through sonication for hours. How can I use this graphene solution for electrodeposition using a potentiostat. And also how I can...

31 December 2014 8,478 2 View

How authentic is the analysis of the XRD for graphene and graphene-PANI nanosheets?

The Intensity of Graphene is almost completely finished and whole line become almost straight in Graphene sample. But for Graphene-PANI, the intensity is quite shorter. Both intensities are...

11 December 2014 5,330 7 View

"Polymer-graphene Nanocomposites" edited by Vikas Mittal, Ralph Nuzzo, Harry Kroto

Please I need anyone to help get this e-book. Thanks in anticipation.

08 September 2014 6,232 0 View

How do I calculate the tangent of a curve using the Origin software?

I need this to effectively and correctly calculate the Band-gap of a thin film. Thanks!

08 September 2014 4,968 9 View

Any theoretical proof for as-deposited polyaniline (PANI) thinfilm being amorphous while bulk (powder) PANI being crystalline (peaks betwn 10-28 deg)?

Thin film of PANI deposited by CBD on silicon substrate posses no peak from XRD measurement while the bulk sample obtained from the same procedure posses peaks at low 2theta angle (~ 10 - 30...

01 January 1970 7,430 4 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 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

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

How to prepare a thin polymer film by post-polymerization/crosslinking?

24 February 2021 2,362 5 View

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View

What is the error of the Txy diagram?

Hi, I know the attached Txy diagram has an error but can't figure it out. Could you please look at the diagrams and explain it to me?

23 February 2021 4,239 1 View