How the imaginary part of the refractive index or the extinction co-efficient changes with the glycerol or ethanol concentration?

How the imaginary part of the refractive index or the extinction co-efficient glycerol or ethanol changes with the glycerol or ethanol concentration in an aqueous solution? Is there any...

09 October 2017 5,113 0 View

How to mathematically calculate the penetration depth of skew rays in a optical fiber?

In waveguide based fiber optic sensor, Meridional rays have much higher penetration depth than the skew rays. Is there any mathematical formula to calculate the penetration depth for skew rays in...

09 October 2016 4,613 3 View

Is their any special type of Single mode fiber(SMF) to guide a Bessel beam?

08 September 2016 9,133 3 View

How to calculate the spot size of zeroth order Bessel-Gauss beam inside a fiber or waveguide?

When we couple a Gaussian beam into a Single mode fiber, then the spot size of the Gaussian beam (W) is a fiber dependent parameter which is expressed as: W= a.*(0.65+1.619*V^-1.5+2.879*V^-6)...

08 September 2016 7,790 4 View

How to guide a Bessel beam or higher order mode through a single mode fiber?

A Gaussian beam is guided through a Single mode fiber. But if we propagate a Bessel beam through a Single mode fiber, then will it guide the Bessel beam like Gaussian beam? that means will the...

08 September 2016 7,347 6 View

How can I find the propagation constant of different modes in a multimode fiber?

How to numerically find the values of propagation constant of different modes inside a step index multimode fiber using eigen value equation??

11 December 2015 7,451 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 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

Is is possible to pole with corona poling pellets of the sample material instead of thin films?

As it is highly probable that pellets will have a higher degree of air gaps and voids than thin films, is it possible to pole the samples with corona poling nevertheless? Or is there the...

24 February 2021 1,349 1 View

How to resolve Gaussian error termination " Error termination via Lnk1e in F:\G16W\l103.exe" for TS(QST3)?

When I run the job for TS(QST3) in gaseous phase, it was completed without any error. But when I add water in CPCM model it terminated with an error: Inconsistency: ModMin= 2 Eigenvalue=...

21 February 2021 3,198 2 View

Helix antenna coupling problem?

Dealing with a helix antenna, made with flexible material and not rigid like using a PCB board or wire. At the beginning of the helix is too close to the ground plane, causing coupling. How can I...

21 February 2021 4,453 3 View

How to calculate the Atomic Polar Tensor using DFT ?

Dear friends, I am a beginner at DFT calculation. I have done a structure optimization using DFT- B3LYP/6-31G*, Nevertheless, I don't know How to calculate the Atomic Polar Tensor (APT) in...

17 February 2021 9,082 3 View

What are your alternative data collection methods during the pandemic? What are the pros and cons?

Dear colleagues We are exploring possible data collection methods for environment and behavior research in the context of architectural environments. Have you conducted any Post Occupancy...

16 February 2021 2,575 4 View

Access to supercomputer resources in India?

Hello everyone, I want to perform some gaussian calculations and want to use Materials studio for my research work. Can anyone guide me how to get access to supercomputer resources in India for...

15 February 2021 8,264 3 View

Any way to separate out fluorescent channels from a composite image?

Hi there, I've been using the EVOS Auto II microscope for some time now and usually I will save the transmitted light/bright field image and the images from fluorescent channels as separate...

15 February 2021 546 3 View