In lasers what is the physical process that is responsible for directionality...?

In normal radiation the atomic transitions from higher to lower states are random and the corresponding energy difference is spherically emitted in all the possible directions. In lasers a larger...

03 April 2018 9,525 3 View

Is it possible to fabricate some nanostructure that may absorb the entire solar spectrum...?

Is it possible to create some nanostructure so as to absorb the entire solar spectrum. If not then What are the major challenges in this field...?

02 March 2018 3,502 28 View

What one should have in mind before going through any material characterization technique...?

Although its a very basic question but i think it must be discussed in forum like this, that before we start studying any property like electrical, optical, thermo-mechanical etc. of any sample,...

09 October 2017 1,238 19 View

What should be kept in mine before going through any characterization of materials under study...?

Although its a very basic question but i think it must be discussed in forum like this (ResearchGate) that before we start studying any property like electrical, optical, thermo-mechanical etc. of...

08 September 2017 216 0 View

How hardness is related to the conducting properties of a material.....?

Does anyone have any idea how hardness of a material is related to the conducting properties of a material specifically in the context of Chalcogenides.

09 October 2016 1,526 3 View

How hardness is related to the conducting properties of a material.....?

How the hardness of a material is related to the conducting properties of a material specifically in the context of Chalcogenides?

08 September 2016 704 0 View

How one can interpret the results of SEM(Scanning Electron Microscopy) image in the view of condensed matter physics ?

04 May 2016 8,929 17 View

Would we ever be able to measure experimentally the quantity of human emotions having some numerical value?

Is it possible to quantitify the magnitude of human emotions? Like anger, hate, love, affection, sorrow, greedness etc. Would it be possible in near future to prepare a table having a column with...

04 May 2016 1,453 4 View

What is the role of dangling bonds in amorphous semiconductors?

Other than defect states responsible for hoping conduction, what is the role of dangling bonds in amorphous semiconductors specially in the context of chalcogenides?

04 May 2016 297 9 View

Why material generally comes out from the walls of the ampoule while quenching it?

While quenching an ampoule containing Se, Ag and Bi in an electric furnace the material comes out of the ampoule from its walls, neither the ampoule gets burst nor the material is coming from the...

03 April 2016 5,128 12 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How the Ground Plane implantation is performed without damaging (and w/o varying the undoped nature) the top Si (8-10 nm) in FDSOI technology ?

It is a general practice to introduce Ground Plane in FDSOI devices under the BoX. The Ground Planes are introduced by Ion Implantation through Top Si layer and Buried Oxide. I wanted to know that...

24 February 2021 5,974 4 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

How can we determine the band gap of a composite material that is made up of a composition of direct and indirect band gap semiconductor materials?

I have a direct band gap material and an indirect band gap material. If I made a composite of both through physical mixing. Then how can I determine the band gap of such a material as the Tauc...

17 February 2021 8,104 4 View

Any resist stripper which can remove thick metal based polymer residue and which is compatible with doped silicon ?

I am looking some resist strippers which can easily remove metal based polymer residue after post dry etch process. I have some candidates below but not sure if they are compatible with doped...

21 January 2021 3,008 3 View

How to measure Tg (Glass Transition) in lyophilised sugar/protein matrices using DSC?

I have been attempting to measure the glass transition temperature of various amorphous powders consisting of sugar/protein mixtures and have had little luck. I typically use a scanning rate of...

13 January 2021 10,022 3 View

What is the best way to calculate electrical conductivity of semiconductors and the same system with a layer of oxide using Quantum Espresso?

I have tried BoltzTrap, and EPW but I'm not sure whether Boltzmann Transport Equation is a right approach for a complex system (semi cond. + an Oxide layer or even the semiconductor itself). Also...

11 January 2021 4,597 4 View

How to calculate the band potential of a semiconductor material using energy band gap?

I am looking for methods to calculate the band potential of ZnFe2O4 and Fe2O3.

05 January 2021 6,416 2 View

Application for Ph.D. in Inorganic Chemistry?

I hope to have the opportunity to continue toI hope to have the opportunity to continue to do more in-depth research, do more in-depth research. My main field is to use semiconductor metal oxides...

04 January 2021 1,148 2 View

What is the physical significance of series resistance of a Schottky diode?

Is series resistance a parasitic parameter of the resistance of the semiconductor in a metal-semiconductor contact? Device physics

04 January 2021 5,544 3 View