Danish Shamoon

6 Questions 15 Answers 0 Followers

Questions related from Danish Shamoon

How to calculate surface area corresponding to each surface mesh node in FEM using COMSOL?

Consider an arbitrary surface mesh (meshed with triangles/quads) with variable roughness/curvature of surface leading to a size distribution of (small/big) mesh elements. It is possible to select...

11 November 2018 5,118 0 View

Selection of solution dataset based on a boolean expression in COMSOL?

I have a 3d solution dataset on a surface of the sphere (eg for Potential distribution, V) from which I can visualize a boolean expression plotting a 3d surface (not volume ! ) where a condition...

02 February 2018 4,774 13 View

Interpretation of cathodoluminescence maps?

Emission starts from within the excitation volume in the material. Looking from the top, this volume can be much bigger than the spatial extent of the point in the CL map for which the intensity...

04 April 2016 3,539 1 View

What are the steps to calculate the frequencies emitted in Optical Transition Radiation?

Applied voltage of Electron beam is 10, 15, 20, 25 kV and material is w-GaN

04 April 2016 7,473 1 View

How closely does a surface plot of a top view SEM image represent the actual relative distribution of nanostructure heights?

We can easily plot intensity values of a SEM image as a surface. What is the relation of the contrast present in the SEM image to the actual height distribution of nano-structures? See the...

03 March 2016 7,057 4 View

In 2d-FDTD, what does a point source excitation using a Gaussian pulse (put in time domain) represent?

In my 2d FDTD code, I use a Gaussian pulse (in time) to excite Electric field at a point (center) in 2D space (only air) as a soft source. During simulation, Ez spreads out isotropically as an...

02 February 2016 6,562 5 View