Is it possible to see upconversion emission using sunlight as an excitation source?

Is there any upconverting nanoparticles with high quantum efficiency (preferable emission in red), which can be excited using sunlight ( NIR band).

02 March 2018 1,515 4 View

Is it possible to do heat initiated free radical polymerization of N N dimethylacrylamide?

I want to make transparent polymer sample of N N dimethylacrylamide. But I don't know if it can be polymerized using AIBN or some other initiator under heat.

10 November 2017 8,793 4 View

What is the best way to approach a professor for a post doc position?

Is it a good practice to attach CV , if not certain about the availability. Is it absolutely necessary to attach a cover letter with CV or only CV is fine. What does no response to emails means?

02 March 2016 3,172 2 View

Why only XRD peaks at higher angle are blue shifted upon doping?

I have doped Y2O3 with La3+ ions and XRD shows slight blue shifting of higher angle peaks but major peak at lower angle remains at same position.

11 December 2015 4,694 10 View

How to get rid of the bubble formation due to organic additive during the bulk polymerization of styrene?

10 November 2014 6,682 11 View

What is the color of LaSrMnO3(LSMO) particles

I have tried to made some LSMO particles ang got black color particles when sintered the gel at 500C. Does anyone have any idea if the color is right?

07 August 2014 356 9 View

How can I make highly ethanol dispersible LaF3 nanoparticles?

I have used PEG and nanoparticles are dispersible in ethanol at low concentration but at higher concentration it loses its dispersibility.

03 April 2014 7,215 0 View

Does anyone know a water miscible monomer that can be polymerized by bulk polymerization?

Any kind of monomer that can still be polymerized in the presence of very small quantity of water is good.

02 March 2014 6,455 3 View

Is your nc-glass composite a powder or it is nc into a Sio2 matrix (gel)?

If it is like gel or solid matrix into which nc are embedded, how is the transparency of the matrix?

01 February 2014 1,604 0 View

Can anyone suggest a way to synthesize highly water soluble zinc oxide(ZnO) nanoparticles?

When I tried to synthesize, the particles don't turn out to be soluble in water.

31 December 2013 703 3 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