How to remove radiations in silicon substrate in the simulation?

I designed a plasmonic slot waveguide using gold on top of the 2 micron oxide layer and below the oxide layer, I used silicon as substrate. the idea is to optimize the waveguide dimensions (slot...

01 November 2020 4,400 3 View

How to calculate the group velocity using Comsol?

Hi, I designed the cross section of the plasmonic slot waveguide using wave optics module in comsol. I used mode analysis method and now I am going to calculate the group velocity of my structure....

22 September 2020 2,660 3 View

Can any one know how the mode excited in mode analysis study within Comsol?

I want to know how the modes are excited when we use mode analysis study in Comsol? when we use boundary mode analysis in Comsol, the modes excited using ports we create. what about the excitation...

23 May 2020 529 9 View

How to optimize the parameters of slot waveguide using COMSOL?

I designed a plasmonics slot waveguide using Comsol but I want to know the steps of optimization of evanescent field ratio(EFR) versus slot height and width. The problem is with the increase of...

18 March 2020 3,222 6 View

Relation between the effective mode index and the attenuation coefficient?

can any one know about the relationship between the effective mode index of a mode and its attenuation coefficient. I want to calculate the propagation length of plasmonic slot waveguide I...

08 March 2020 7,159 6 View

How can I calculate effective mode index of waveguides analytically?

I am simulating slot waveguide using mode analysis in wave optics module performed in COMSOL multiphysics. I got the results and also the effective mode index for our mode. however, when I...

26 February 2020 8,434 4 View

I am wondering how can I do some modifications on lithium Ion battery model by simscape Matlab?

Currently, the blocks in the model are look up tables with two inputs (Temperature , SoC) (the link is attached). I want to modify the resistors to have three inputs (T, SoC, and Cycles). But, I...

12 August 2019 8,259 1 View

When should I harvest the yeast cell growing in galactose medium to perform qPCR?

Hi, I engineered the yeast Saccharomyces cerevisiae to over-express some of its native genes, in addition to native copy of gene. For overexpression, I used strong modified GAL1 promoter ( that...

12 November 2018 496 3 View

Have you ever checked "voice" in your professional writing?

For instance, the way you present the persona.What factors affect your "voice" ?

03 September 2018 8,969 4 View

What is your reaction when asked by a journal editor to carry out a peer view?

Supposing you have just received a request from editor of a journal asking if you would be eager to review a paper submitted for publication. How should you respond to this offer? Please elaborate !

03 September 2018 3,830 3 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

How do I determine the degree of polymerization of PEG 400 based on NMR integration?

Hello, I am working on the photocatalytic degradation of PEG 400. I would like to know if it's possible to determine the degree on polymerization based on NMR integration, or by the MW of the...

02 March 2021 6,186 3 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View