In the two dimensional materials such as graphene and phosphorus what happen for band gap, by increase the layers ?

what is the reasons of this changes?

11 December 2019 1,047 5 View

Is there a complete reference for determining the direct or indirect band gap in semiconductors?

(For example: (Li2B4O7) and other materials

09 October 2018 8,062 3 View

Is there a relationship between the peak intensity and the amount of matter in the XRD spectrum?

for example In the carbon nanotubes decorated with metal nanoparticles, can guess or calculate the approximate value of metal from the peak intensity ratio?

10 November 2017 4,090 4 View

Is there experimental method for doping carbon in nanoparticles, such as Al2o3:C??

FOR EXAMPLE CAF2:C , Al2O3:C.....

06 July 2016 5,971 3 View

What is the best and easiest method for purification of carbon nanotubes? Without changing its basic structure.

31 December 2015 7,494 0 View

We know that by reducing the size of particles in nano-materials bandgap increases what is the formula for calculate the bandgap of nanoparticles ?

E (NANO) = E (BULK) + ...........

31 December 2015 4,094 2 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View