How to get free from the error 'Undefined variable comp1.Ne'?

Dear Colleagues, I want to simulate a 3D MOSFET using semiconductor module. But, I am getting this error in the source domain: Undefined variable. - Variable: comp1.Ne - Geometry: geom1 -...

05 June 2018 6,200 0 View

How to calculate optical conductance from the optical dielectric constants?

I need to make a database for optical conductivity of materials from their respective frequency dependent optical permittivity. The unit of optical conductance should be in S/cm. I went up to many...

02 March 2018 6,413 0 View

How to knit the space between two concentric ellipsoid surfaces to make it a solid shell?

Dear Colleagues, I have designed a pair of concentric ellipsoids, which are needed to be connected with each other to form a solid shell in .STL format. Can I join them together? Please...

10 November 2017 4,136 7 View

How to calculate molar ionic conductivity from the effective electrophoretic mobility value for levodopa @pH=7?

03 April 2017 408 0 View

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I have obtained these data from Gaussian-09 package using keywords "freq polar" using B3LYP/6-31G++(d,p) exchange-correlation functionalExact polarizability: 190.335 2.070 169.585 11.327 -3.895...

02 March 2017 7,820 0 View

How can I find the structure given as gaussian archived entry file?

01 February 2017 9,464 4 View

What are the frontier journals for Plasmonics?

I am working with plasmonic nanomaterials. Please name the frontier journals where I may publish my research works. Thank you.

31 December 2016 2,936 1 View

What is the symmetry of a structure when Td and Oh point groups coincide/superimposed?

Since both the Td and Oh point groups belong to cubic symmetry, if we consider any structure in which the center of mass of both the structure coincide together, then what will be symmetry for the...

11 December 2016 5,011 4 View

Help to model aggregation kinetics of nanoparticles with molecular dynamics simulation

31 December 2015 2,274 2 View

Help to model aggregation kinetics of nanoparticles with molecular dynamics simulation

31 December 2015 4,595 2 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

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

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

Could anyone tell me what is the range of submillimeter wave?

There is confusion regarding the submillimeter-wave range. Many papers specify its range from 300GHz but some also consider its range from 100GHz. If I design an antenna on 122ghz what would I...

01 March 2021 516 7 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 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

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View