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Questions related from Nima Tabatabaei
As all we know, by changing the size of perovskite nanoparticles, we can tuning of band gap would accur, so that according to each band gap we would expect photoluminescence in a certain...
05 May 2019 4,811 5 View
As all we know, when the size of a luminescence material is lower than it's bohr exciton radius, it can be excited by radiation of photon and when the carriers recombine, there would be a...
04 April 2019 7,946 6 View
I want to solve approximately 50mgr PbI2 in 10ml chloroform. Is it possible? Does anyone have experienced this? I don't want to heat my solution up. But if I solve it with raising temperature,...
01 January 2019 4,691 7 View
As all we know, there are two conventional ways to tune MOF structures and specially pore size by altering the metal clusters or the ligands. But the question arises when we want to have a...
01 January 2019 8,188 4 View
Is there any standard about porosity volume fraction measurement in a casting specimen?
06 June 2018 867 0 View
I’m going to use electropolishing instead of mechanical polishing in my project which is related to aluminum casting alloy (3XX series) and I had some difficulties during the process. So that if...
08 August 2017 8,074 4 View
Melting temperature of Cu is about 1083ºC and for Al is 660ºC, but why Al alloys have more fluidity than Cu alloys?
05 May 2017 7,166 6 View
When a dislocation faces precipitations, two probabilities might take place: 1)dislocation cut through precipitation particles or, 2)dislocation leave a loop around precipitation particles. We...
05 May 2017 3,711 10 View
As we know, in precipitation hardening mechanism, forming GP zones is the first stage and then θ”, θ’ and θ. Is GP zone a phase?
05 May 2017 9,581 3 View
