If the lowest unoccupied orbital is considered in organic photovoltaic solar cell?

Dear people, I am confused about LUMO orbitals in photovoltaic solar cells. According to the literature, Voc (open circuit voltage) is related to the HOMO orbital of donor and LUMO orbital of...

16 August 2020 1,538 4 View

How to sure that a optimized structure is traped in a global potential well not in the local one for large systems?

Dear people, I have optimized a dimer (each monomer contains about 50 to 60 atoms) structure in its equilibrium distances (I have done a rigid scan to find the equilibrium distance between...

05 August 2020 7,683 1 View

How to calculate the Jsc for solar cell?

Dear all, I need to calculate the amount of Jsc for solar cell using quantum mechanics approach. As the Jsc is the integration of the Air mass spectrum, is it possible to calculate it according...

30 November 2019 5,411 2 View

Phycoerythrin from two Nostoc strains SDS-PAGE?

Dear colleagues We could successfully extract and purify the Phycoerythrin from two Nostoc strains with four major steps viz. preparation of crude extract (Step I), 65% ammonium sulfate...

16 July 2018 1,264 7 View

How to compute error rates for a cascade verification system?

13 September 2016 3,017 3 View

Does anyone know that why some of filaments of spirulina are in red and some of them are blue at the same slide?

Hi every one Recently we bought some permanent microscopic slide of different species of cyanobacteria. I have a question about the slide of spirulina. Does anyone know that why some of filaments...

22 August 2016 9,099 6 View

How does the solvent affect the molecular weight of polymer?

19 December 2014 5,754 7 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 is the best way to keep an anaerobic chamber anoxic in the absence of hydrogen?

I'm a graduate student who works with an anaerobe, so I often work in an anaerobic chamber. I've been working on an assay that involves the steady-state of the quinone/ quinol pool. Anoxic...

03 March 2021 2,971 1 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 repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 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

In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein?

Hi In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein? I got this error in the add-ion stage: Fatal error "./ amber99sb-ildn-HHH.ff / force...

01 March 2021 8,747 4 View

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 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

What is Flat Lens Antenna?

28 February 2021 5,433 3 View