Edgar Owiti

11 Questions 19 Answers 0 Followers

Questions related from Edgar Owiti

How to increase transmittance of plasmonic resonator in COMSOL?

Hi, i am modeling my unit cell structure (plasmonic rectangular slit) in COMSOL with silver metal as top layer and ITO as substrate. My transmittance, |S21|^2 is too small , ~ 6%. I have...

04 April 2016 8,655 5 View

How is the phase delay in metasurface calculated in COMSOL?

what is the expression for calculating phase delay caused by a resonator in COMSOL. I have tried using the expression arg(emw.S21) for transmission mode but i seem not to get the phase i see in...

03 March 2016 3,352 2 View

Left / right circular polarized light in a metasurface using COMSOL?

Hi there, i am working on a transmission mode in metasurface. How do i set the equation for the incident field to have circular polarization? Also how do i plot the electric field for the...

03 March 2016 2,708 5 View

Encoding phase information on a metasurface?

Hello, i would like to know the procedure/ method or any relevant information for obtaining and transferring phase information of a color image onto a metasurface. I have read some literature on...

03 March 2016 5,663 5 View

Coplanar waveguide CPW, planar metamaterial Transmission line?

Hi, i am trying to repliicate results of the paper (link below) to learn about CPW planar metamaterial and later apply in my research but i am unable to. I am using COMSOL multiphysics, I have set...

01 January 2016 8,866 2 View

Can COMSOL and HFSS be used interchangeably to simulate metamaterial and produce identical results?

Hi all, Has anyone tried to replicate the results of metamaterial unit cell in the paper by D.R. Smith, using COMSOL Multiphysics? In the paper, the HFSS simulation tool has been used. I have...

12 December 2015 2,961 4 View

What is the fundamental information required from an light field image to determine or estimate its depth information?

Hi all, i have read some literaure on light fiield depth estimation and it seems most of them use either resolution information or shading as a parameter to obtain or estimate depth of the scene....

11 November 2015 9,839 6 View

What are the current scientific challenges associated with invisibility cloaking?

I am looking forward to developing a metamaterial invisibility cloak in the microwave region and I want to know whether there are unresolved challenges associated with this Transformation Optics...

10 October 2015 10,053 4 View

Can anyone assist me with materials on electromagnetic radiation power splitters/combiners metamaterials?

I need to develop a metamaterial that can split and combine electromagnetic power with zero phase variation, kindly asssit me with any material, advice concerning this area.

09 September 2015 285 3 View

What are the acceptable power losses in an electromagnetic power splitter - through a metamaterial medium?

I want to fabricate a metamaterial and test its application for wireless commnication (frequency 2-8GHz) , i need to know the acceptable power losses so that i can determine the suitability of my...

09 September 2015 9,221 4 View

what is the procedure for finding the right dielectric material and metal when intending to obtain near zero permeability metamaterial (MNZ)?

Differernt papers show the use of different materials for simulations to obtain zero index metamaterial, is there some kind of a guide in choosing the dielectrics and metals?

04 April 2015 6,772 1 View