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...

03 April 2016 8,583 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...

02 March 2016 3,241 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...

02 March 2016 2,444 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...

02 March 2016 5,585 5 View

Coplanar waveguide CPW, planar metamaterial Transmission line?

31 December 2015 8,794 2 View

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

11 December 2015 2,885 4 View

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

10 November 2015 9,747 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...

09 October 2015 9,962 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.

08 September 2015 215 3 View

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

08 September 2015 9,134 4 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

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

How do you mesh a thin solid in Fluent?

Hello, I have used the shell function on SpaceClaim to create thin solids for the model I am studying. These are contained within an enclosure for my study. I chose this approach as it avoids the...

24 February 2021 8,856 3 View