What is the range of absorption coefficient of PANi nano fibers dispersed solution?

The UV-Vis absorption coefficient of PANi nano fibers dispersed in water is very low. What are the possible reasons behind this low value?

11 December 2017 8,690 1 View

How can I explain that the residual stress can shift some xrd peaks in one direction, and other peaks in the opposite direction for the same sample?

This is may be due to the need to balance stress at grain boundaries, and satisfy constraints on the strain tensor (for example a tensile stress along one direction must be balanced by a...

07 August 2015 1,891 8 View

Why the energy gap of CZTS thin films deposited by spray pyrolysis is higher than the reported values?

The reported values of energy gap of CZTS thin films are in the range 1.4-1.5 eV, however, my spray pyrolysis deposited CZTS thin films have more than 2 eV energy gap. What are the possible...

05 June 2015 5,648 9 View

Why the most probable energy of molecule is not the energy of a molecule moving at the most probable speed?

In Classical gas, why the most probable energy of molecule is not the energy of a molecule moving at the most probable speed?

03 April 2015 7,810 2 View

How many clean glass substrates need I to measure the absorbance of thin film material deposited on glass substrate?

01 February 2015 1,201 14 View

What is the mechanism of changing crystal color from transparent white color to light color after doping?

K2SO4 crystal is transparent color. The Cu doped K2SO4 crystal has light blue color. What is the exact mechanism behind this phenomenon?

01 February 2015 2,989 2 View

Why does a photon transfer all its energy to an electron (and disappears) rather than transferring part of its energy and continuing to exist?

The photon CAN transfer part of its energy to the electron and continue to exist. An example of this is Compton scattering, where a gamma ray transfers enough energy to the electron to ionize and...

11 December 2014 2,286 6 View

What is the benefit of the intrinsic layer in thin film solar cell?

The thin film solar cell is either n-i-p or p-i-n

11 December 2014 8,065 4 View

What is the difference between particle size, grain size and crystallite size?

And how can we measure each one of them?

11 December 2014 5,087 8 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

What is the exact mechanism of the antimicrobial effect of local anesthetics?

The antimicrobial effect of local anesthetics has been known for more than 50 years, but it still seems to have an unclear mechanism of action. which bacteria? which concentration? etc etc. ....

27 February 2021 4,450 2 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View

Bayesian decision trees and bayesian regression trees in Python and/or R?

I am looking for implementation of bayesian decision trees and bayesian regression trees in Python and/or R.. Do you know if the existing libraries support this

23 February 2021 6,689 3 View

Can I ask did any good platform or journals for learning the calcluation on the reference governors and command governor?

Recently I face some problems with the mathematical ( calculation) on the reference governor and command governor, so I need some help from you all to get which platform or journal can let me...

23 February 2021 7,746 2 View

Special issue on PLS-SEM in Mathematics. Are you interested?

21 February 2021 5,601 3 View

What is the better software for approximation of 3D surface with equations?

I have a massive of x, y, z coordinates of 2D surface in 3D space, which builded in Ansys HFSS or AutoCAD. How can I get the analitical aproximation of this surface by formulas?

21 February 2021 3,444 7 View

What is the minimum number of studies in each category required for a multiple subgroup analysis to be viable in a meta-analysis?

Cochrane Handbook mentions subgroup analyses are only warranted if there are more than 10 studies (I have 28), and if they are distributed evenly among categories of subgroup. I am wondering if...

17 February 2021 3,467 4 View

How can I obtain a sine function along a path with known equation?

I have a symmetric airfoil with known equation. Now a sine function passes along the airfoil equation like following figure. I want to find the sine function in (x,y) coordinate system.

17 February 2021 1,594 12 View

Does learning mathematics exclusively improve cognitive abilities?

Teaching Mathematics at school to all students is commonly justified by the opinion that it improves their problem-solving skills and "makes them smarter" (whichever measure is implied by this). I...

15 February 2021 7,391 7 View