Should I use higher centrifuge speed or my polymerization actually did not work?

One of my sample (NIPs-non-imprinted polymer) couldn't settling down after centrifugation (4000 rpm). Might be due to very fine particles. So what I did, I let the samples to evaporate under fume...

06 December 2020 3,344 3 View

What can explain the high desorption percentage when the desorbent is NaOH on a material that has adsorbed an anionic dye ?

Good morning to all of you Please, I need some help, After the adsorption of an anionic dye by an activated carbon at acidic pH, I studied the desorption phenomenon using NaOH, H2O and H2SO4 as...

18 April 2020 2,592 5 View

How does the current flow in the tunnel junction of dual-junction solar cells?

The dual-junction solar cell composed of two sub-cells would achieve a better conversion efficiencies, but how does the current flow in the tunnel junction P++/n++ withou current loss?

12 April 2020 3,573 6 View

What's the best way to reduce the carrier recombination at the back contact of solar cells?

P-type absorber material, an n-type material is mandatory for creating a good p-n junction. The heterojunction Absorber/Buffer cell requires a transparent conducting oxide (TCO) layer at the front...

05 April 2020 7,047 4 View

How can help me about the real parameters for Perovskite thin film?

I would like to simulate a typical perovskite solar cell. I have found a lot of references for perovskite parameter values in literature. Does anyone have any reference so that I can get values...

02 April 2020 1,777 6 View

Can you tell me about the characterization methods to determine defects levels in the gap energy?

It's very important to determine the defects levels that impact on the solar cell performances, especially in the absorber part. We would like to know also the origin of this defects and their...

21 March 2020 4,938 7 View

How can I model & simulate quantum dote thin films using CASTEP with different tail parameters?

A QDSC solar cell design that uses quantum dots as the absorbing photovoltaic material. It attempts to replace bulk materials such as Si, CIGS, CdTe ... etc. Quantum dots have bandgaps that are...

16 March 2020 1,986 4 View

How I can simulate Quantum-well solar cells QWSC using silvaco?

I want to calculate the QWSC performance. The problem encountered is how to introduce the Quantum well in the structure . Can anyone suggest to me how can I simulate QWSC without any problem?...

07 March 2020 8,427 2 View

I need to know the best method to deposit Cu2SnZnS4 (CZTS) nanowires for solar cells?

Due to containing expensive rare metals of In and Ga, CIGS chalcopyrite materials have still not been fabricated as thin film solar cells on a large scale. Fortunately, another chalcopyrite...

29 February 2020 5,424 5 View

I need help on generating constraint for the development of a computer program for train running diagram , what are the basis?

Intend to use c++ programming if am able to generate the constraint , also I will appreciate suggestions on better software to use for the achievement of this aim.

24 February 2020 1,040 3 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 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

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

Does RNAiMAX transfection reagent work in serum free medium?

I diluted siRNA and RNAiMAX in opti-MEM and added to the cells which they were in the growth medium. Is it a right way? or should I culture cells in the opti-MEM medium for a while and not in...

26 February 2021 10,041 3 View