Nasrin Asgari

10 Questions 11 Answers 0 Followers

Questions related from Nasrin Asgari

Question on COMSOL animation?

Can you please help me, I have done a COMSOL simulation and my result is a 3D plot with slices. The problem is that when I want to export or play the animation, the result is different from the...

02 April 2020 8,541 3 View

"J-aggregation of dye by Langmuir-Blodgett" ?

Can you help me please, How can I make sure about the formation J-aggregation of (PIC) dye on solid substrate by Langmuir-Blodgett technique? Is there any other way except uv-visible absorption...

16 December 2017 6,378 6 View

"A problem with gold sputter deposition"?

I have sputtered my samples with 43nm gold (Au). My substrate was PDMS grating. But the color of the reflection light is almost green and I can't excite surface plasmons (there is no dip in...

22 October 2017 5,013 3 View

What happened to my material? " SIGMA-ALDRICH, 1,1′-Diethyl-2,2′-cyanine iodide"?

I have bought 100 mg of "1,1′-Diethyl-2,2′-cyanine iodide" or "Pseudocyanine iodide" from Sigma. The material that I bought is a white powder (look like white particles), but I have read on the...

27 August 2017 3,809 1 View

How can I create Carboxylate modified polystyrene nanospheres?

I have polystyrene spheres with diameter of 800nm that are suspended in water, can I create carboxylate modified polystyrene with them?

10 May 2017 1,436 4 View

I have polystyrene spheres dispersed in water, can I transfer them to ethanol by centrifuge?

I added some ethanol to my colloidal solution (800nm polystyrene spheres in water) then centrifuged it for 11min and with the speed of 6000rpm, but at the end some of the polystyrene spheres...

10 May 2017 6,585 2 View

Can any one describe the dispersion diagram of gold?

I have downloaded the complex refractive index of gold from this website http://www.filmetrics.com/refractive-index-database/Au/Gold and then plotted the dispersion diagram of gold. I have...

28 April 2017 170 7 View

Dispersion curve for surface plasmons?

I have recorded the reflection of my sample, then I calculated the complex refractive index and extracted the effective permittivity (effective dielectric constant) and finally plotted the...

08 April 2017 7,362 1 View

How can I create a monolayer of Polystyrene micro- or nanospheres on a glass substrate by Langmuir-Blodgett technique?

I want to arrange polystyrene beads on a glass substrate by L-B method. What is the easiest and best way for doing that? and is there any new technique to facilitate it?

02 March 2017 6,402 1 View

Which kind of dyes can easily form J-aggregate?

Which dyes can easily form J-aggregate by L-B method(on a glass substrate)? How about Merocyanine dye?

09 February 2017 2,828 3 View