Is there a process for changing crystalline silicon nanostructures or nanoparticles to amorpous silicon which is going to be used in Li ion batteries?

Amorphous silicon has lower volumetric change than crystalline silicon during first cycles of charge and discharge. How can we prepare amorpous silicon from nanostructured crystalline silicon? Is...

10 November 2019 2,401 4 View

How to clean copper surface before coating process?

What are suitable reagents for removing oxide layer and grease or organic impurities from copper surface before the coating process?

07 August 2019 2,913 4 View

How to leach Fe impurities out of Silicon Suspension?

High energy ball milling used to prepare silicon micro and nano particles. I used magnetic separation to remove iron. But there is a small amount of iron left in the suspension. How can I remove...

06 July 2019 4,269 2 View

How to calculate density of a coating layer?

It's a coating with few micrometers in thickness. There are equations for thickness prediction. But for using them, I need to know the coating density. I'm using spray coating method. The...

06 July 2019 6,846 4 View

What are suitable reagents for color eching of AISI 304 stainless steel?

Any reagent for revealing microstructure, electroetching, chemical etchin, or other methods. I need the colorful microstructure image. I only need the artistic aspect of images!

06 July 2019 6,161 3 View

What are flow lines?

Does anyone knows a reference book that describes this phenomena? Are flow lines and shear bands the same or they're different from each other? why flow lines appear in micro structure? (Attached...

01 February 2018 3,036 0 View

Why second phase particles cluster during cold work?

In the attached picture, rolling direction is from bottom to the top(vertical).

01 February 2018 1,905 0 View

Can grain structure be revealed using SEM?

can we see the grains and grain boundaries without using any etching procedure by SEM?

11 December 2017 7,982 2 View

What is the main reason for edge cracking of aluminum alloys during cold rolling?

sheet edge geometry change, workability limitation or something else?? Does anyone have studied about that?

09 October 2017 4,589 3 View

Can Quench and Partitioning heat treatmnet(Q/P) improve the impact energy of AISI 4140 steel?

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08 September 2017 3,443 0 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 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

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

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 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

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

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View