Is any relationship between second-order susceptibility and conductivity in tri layer graphene?

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How Can I define 3*6 matrix in COMSOL?

Hello every body. I want to define 3*6 matrix in COMSOL. How can I do it? Thanks alot

07 August 2015 9,153 2 View

Does anybody have Pdf of Design of the Microelectrode and Modeling of the Brain tissues of MEMS modules in COMSOL 4.1?

I wante simulate Multiphysics Modeling and Simulation of an ImplantableMicroelectrode for Diagnostic and Therapeutic Applications forParkinsonism, by COMSOL. Explain of it, exist in COMSOL 4.1....

07 August 2015 4,413 0 View

How can I solve this error (Failed to find a solution.Singular matrix.Returned solution is not converged.)?

Im working on three modules to gather (semiconductor, electrostatic, heat transfer in solid) for Schottky diode. when COMSOL solve them to gather , has this error: (Failed to find a...

04 May 2015 7,228 4 View

Can i simulate experimental work on quantum cascade leser with comsol?

Hello everybody I want to simulate this thesis with COMSOL. (Heat transfer in solid and electromagnetic wave envelope). is it possible? I don't know which Q and T , I should use with what...

04 May 2015 1,446 0 View

How can i solve two physics togather (electromagnetic wave and heat transfer in solid) in COMSOL5?

Hello everyone, How can i solve two physics togather (electromagnetic wave and heat transfer in solid) in COMSOL5? and which study can solve both of them? thanks alot

04 May 2015 9,835 5 View

Whats does the following error mean in COMSOL: Failed to find consistent initial values?

Hello everybody Im working on plasma, whit helium gas and time-dependent study. its make this error:Failed to find consistent initial values.Last time step is not converged. can anybody help me,...

04 May 2015 2,023 9 View

Where should I use port in this COMSOL geometry?

im working on plasmonic and this is my geometry: Au-CO-Au where I should use port? thanks alot

04 May 2015 3,039 1 View

How can I simulate Second Order Susceptibility?

I want to simulate Second Order Susceptibility, which method and software is better? Thank a lot.

01 February 2015 7,093 0 View

Relative permeability of graphene?

Does any body know about " Relative permeability of graphene"?

09 October 2014 9,956 11 View

Second harmonics generation - graphene?

I am looking for second harmonics generation in optical fiber, that graphene is capable of producing second harmonics. I want to find different modes of the second harmonics, I don't know how the...

07 August 2014 4,685 6 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...

13 August 2024 9,795 0 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

Can a Conventional 50W visible LED Lamp Emit UV Light?

I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....

31 July 2024 3,843 7 View

How can I separate graphene from amorphous carbon of similar particle sizes?

The starting material is a finely ground powder. Some particles contain more graphene than others.

30 July 2024 3,978 2 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

How to calculate conductivity using Electrochemical Impedance Spectroscopy's Nyquist plot?

Hello everyone, I am new to this characterization but watching videos on youtube I have already plotted a Nyquist plot (Z' and -Z'') and already fitted models on my material using Zsim. But now I...

29 July 2024 1,376 0 View

Provided that the shale conductivity termed here x increases with temperature, how could we compute it at reservoir temperature ?

one could use Waxman and Thomas (1974) work?

22 July 2024 6,637 0 View

What role does the gut microbiome play in immune system modulation and disease susceptibility?

Only Probiotics Related

22 July 2024 6,454 0 View

Does democracy have a nonlinear effect on state capacity?

Some research indicates that the fist steps toward democratization of an authoritarian regime actually lowers state capacity. How strong is the evidence for this hypothesis?

14 July 2024 8,239 3 View

How to convert magnetic conductivity from SI to lattice units?

I'm simulating a magnetohydrodynamic problem of blood flow using lattice Boltzmann method in lattice units and I need to convert the magnetic conductivity to lattice units. The physical value is...

07 July 2024 5,243 0 View