In lasers what is the physical process that is responsible for directionality...?

In normal radiation the atomic transitions from higher to lower states are random and the corresponding energy difference is spherically emitted in all the possible directions. In lasers a larger...

03 April 2018 9,525 3 View

Is it possible to fabricate some nanostructure that may absorb the entire solar spectrum...?

Is it possible to create some nanostructure so as to absorb the entire solar spectrum. If not then What are the major challenges in this field...?

02 March 2018 3,502 28 View

What one should have in mind before going through any material characterization technique...?

Although its a very basic question but i think it must be discussed in forum like this, that before we start studying any property like electrical, optical, thermo-mechanical etc. of any sample,...

09 October 2017 1,238 19 View

What should be kept in mine before going through any characterization of materials under study...?

Although its a very basic question but i think it must be discussed in forum like this (ResearchGate) that before we start studying any property like electrical, optical, thermo-mechanical etc. of...

08 September 2017 216 0 View

How hardness is related to the conducting properties of a material.....?

How the hardness of a material is related to the conducting properties of a material specifically in the context of Chalcogenides?

08 September 2016 704 0 View

What may be the possible reasons why photoconductivity is not observed in Se rich Ag doped Chalcogenides ?

Dear colleagues right these days I'm working on some binary alloys of Se rich Ag doped chalcogenide glasses. In these samples photo current is not observed whereas only 2 % addition of indium...

05 June 2016 6,894 4 View

How one can interpret the results of SEM(Scanning Electron Microscopy) image in the view of condensed matter physics ?

04 May 2016 8,929 17 View

Would we ever be able to measure experimentally the quantity of human emotions having some numerical value?

Is it possible to quantitify the magnitude of human emotions? Like anger, hate, love, affection, sorrow, greedness etc. Would it be possible in near future to prepare a table having a column with...

04 May 2016 1,453 4 View

What is the role of dangling bonds in amorphous semiconductors?

Other than defect states responsible for hoping conduction, what is the role of dangling bonds in amorphous semiconductors specially in the context of chalcogenides?

04 May 2016 297 9 View

Why material generally comes out from the walls of the ampoule while quenching it?

While quenching an ampoule containing Se, Ag and Bi in an electric furnace the material comes out of the ampoule from its walls, neither the ampoule gets burst nor the material is coming from the...

03 April 2016 5,128 12 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

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 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

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View