In Field Emission (FE) measurement of thin films which thing is more important "surface morphology" or their "bonding environment"?

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How we calculate residual stress in silicon thin films with the help of Visible Raman spectra?

I am investigating the Raman spectra of the silicon thin film for Stress in film.

08 September 2014 9,994 2 View

Can anyone suggest the most accurate method to calculate "electronic band gap" of thin films?

I am calculating the optical band gap from UV-Vis absorption data of my thin films. But I want to calculate "electronic band gap" of my thin films

08 September 2014 9,461 13 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

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 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

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 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

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

Rohit Pant

It is better if their SEM shows some needle like structure as the same is important for field emission....for more info you can follow this paper

http://scitation.aip.org/content/aip/journal/apl/104/22/10.1063/1.4881595

Alexander Yakunin

It must be remembered that of the three named parameters, only one - Beta - is a model, a virtual setting. The remaining ones are determined by measuring the experimental values - currents. Beta is introduced to configure model law Fowler-Nordheim to describe the experimental data. Beta depends also on the geometry of the emitter surface, and the properties of the composite material.