What is the origin of absorption in the materials? during deposition of optical thin films?

Hello every one, I feel the absorption in the coating films in physical vapor deposition refers to various following factors 1) in proper maintenance of the coating chamber 2) variation in the...

07 August 2019 6,254 4 View

What is parallel momentum conservation in the thin films grown by glad technique?

please explain how the parallel momentum is important in glancing angle deposition techniques for developing columnar growth process

07 August 2019 2,196 1 View

Coating peeling off, How the Stress were generated between the substrate and coated multi layer stack ?

Hi friends, Recently we have deposited a multilayer stack using materials like TiO2, HfO2 combination and TiO2, Y2O3 combination. both combination of stacks were deposited by electron beam...

07 August 2016 3,374 2 View

Can any one explain how to plot the Transmittance data verses angle of incidence ?

Transmittance plot with respect to angle of incidence

01 February 2016 5,277 0 View

Can any one Explain Single Oscillator Model?

31 December 2015 5,266 0 View

What is the concept of effective medium theory for modelling the galncing angle deposition thinfilm filters?

GLAD modelling

04 May 2015 1,625 1 View

How can I model a graded design of optical filter?

I would like to model and design a graded design (multilayer) for the electron beam evaporation technique. I would appreciate if anyone can help me modeling this problem.

03 April 2015 7,714 2 View

Can any explain how to make a rugate broad band design in visible region?

Thin film optics

01 February 2015 3,284 1 View

How the side lobes or harmonics or ripples formation can be Exhaustively been removed in the thin film filters by maintaining overall uniformity?

generation of ripples or harmonics in the interface of the coating.

31 December 2014 1,681 3 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

Is there a method of determining feed digestibility without the need to re-pellet the feed?

I am aiming to determine the ADC values of a commercial fish feed, but I do not have a steam pelleter or extruder available to me. Ideally, the pellets could be coated with some inert marker....

28 February 2021 7,967 3 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View