Why transmission power drops with Lumerical FDTD simulation time?

Hello everyone, I am trying to design a ring resonator in FDTD. I simulated the design and found transmission power dropped by increasing simulation time. Once I increased the simulation time the...

21 January 2021 4,872 4 View

Could you please recommend interesting building material which is environmental friendly and good in insulation in Constructions?

Insulation materials come from different sources. Each material has advantages and disadvantages that must be considered when selecting insulation for buildings. What would you recommend other...

03 January 2021 5,105 21 View

Which material has similar properties to carbon fiber but is much cheaper? Alternative material suggestion?

Alternative material must replace cfrp witH almost similar properties such as being lightweight, strong, durable, oxidation resistance etc

16 April 2020 3,058 6 View

Can you please refer to some materials on additive manufacturing of aluminum alloys?

Can you please refer to some materials on additive manufacturing of aluminum alloys? Thanks.

30 March 2017 8,214 3 View

Can anyone please suggest slow coupling agents for amide formation with deprotonated carboxylic acids?

Hi I am looking for a way to synthesize amide functionalized gold nanoparticles from mercaptocarboxylic acid functionalized gold nanoparticles. In order to keep these particles stable, the surface...

09 October 2016 6,064 1 View

How to model the interaction time of transiently formed dimer nano-particles (in liquid), w.r.t Brownian motion?

Nanoparticles dispersed in liquid are known to undergo Brownian motion. I feel that from time to time, two individual nanoparticles can come close enough to spaces of 1-3 nm and form transient...

27 September 2016 6,523 3 View

Can someone please help me on the functionalization of CTAB/citrate capped 40 nm gold spheres with mercaptocarboxylic acid groups?

I tried the round trip exchange method (by first exchanging the CTAB with dodecanethiol and further by mercaptoundecanoic acid), but my particles aggregated. The direct addition of...

20 June 2016 874 3 View

What is the way to use gain flattening filter ?

Hello Everyone, I am trying to make spectrum in same amplitude, therefore i have used gain flattening filter to chop out the noise and make all the spectral lines in same amplitude in optisystem....

30 May 2016 2,824 3 View

In 'Particle in a Box' model, how is the energy-time Uncertainty Principle satisfied?

08 February 2015 1,350 17 View

Can the theory of General Relativity and the theory of Quantum Mechanics be considered as special cases of the theory of Quantum Gravity?

15 January 2015 4,247 25 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

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

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 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

The procedure compute?

02 March 2021 5,204 3 View