There are a variety of fabrication techniques for graphene, what is the best ?

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In order to validate a numerical code : it is enough to simulate benchmark tests or I should make also experiment tests?

In order to validate a numerical code. I compute benchmark tests. I don't know that I should make other experiment tests or the benchmark tests are enough to validate our numerical model.

08 September 2017 8,021 7 View

What the the name of the term e=(L-L0)/L0 : deformation or strain ?

In resistance of materials problem, we say the term "e" : deformation or strain ?

08 September 2017 5,195 0 View

What is the difference between e1= (L-L0)/L0 and e2=Ln(1+e1) ?

resistance of materials problem

08 September 2017 8,413 0 View

I need to simulate a coupled problem of fracture mechanics. I prefer to use Abaqus. Which commercial software is suggested for multiphysics modeling?

Fracture mechanics problem using the phase-field method. Abaqus: with UMAT and UEL.

07 August 2017 9,802 5 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 are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 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

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

Raul D. Rodriguez

The best for what? If you mean best in terms of easiness to prepare with the highest quality, then mechanical exfoliation is your best friend.

If you want large-area fabrication with more technology potential regarding applications and scalability, then you would like to give CVD a shot.

Mohammad Shamsuddin Ahmed

Yap, you also could try for chemical methods for the functionalization of graphene.

As Mr. Raul said, it depends on your research goal because various methods has various advantages and/or disadvantages.

Thanks.

Roman Boltnev

Hello Hamdi, may be this review will be useful for you

https://www.researchgate.net/publication/283716032_REVIEW_ON_PREPARATION_METHODS_OF_GRAPHENE_WITH_EXCELLENT_QUALITY_AND_LESS_DEFECTS

Research REVIEW ON PREPARATION METHODS OF GRAPHENE WITH EXCELLENT QUA...