Direct and indirect band gap energies?

Is it possible for a semiconductor to have both direct and indirect optical band gaps? can an indirect band gap energy be smaller than that of direct band gap?

07 August 2017 7,936 4 View

Methylsilanetriol or potassium salt of the material synthesis method. Who can give me data about the synthesis of methyl silanetriol or K3(CH3SiO3)?

Who can give me data about the synthesis of methyl silanetriol or K3(CH3SiO3)?

11 December 2016 8,081 2 View

How can i use tio2 nanoparticle as an additive to paint for anti pollution application?

11 December 2016 8,592 6 View

How can I calculate band gap using UV-Vis DRS spectrum?

09 October 2015 9,276 7 View

What is the relation of X2 and R factors in fullprof program?

09 October 2015 3,191 0 View

What is Rf in fullprof program?

09 October 2015 2,347 0 View

Can anyone help me to determine the crystal structure of a compound Bi2Mn2O7 via reitveld analysis? I attached a PXRD file (txt)

I have used a reference from Abdul halim shaari

06 July 2014 1,392 22 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 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

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

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View