How can I calculate the Au atoms in the gold nanoclusters ?

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Can anyone help me to interpret FTIR spectra ?

Here I have attached the Ionic liquid modified Magnetic Nanoparticles, one part of final product washed one time and another part washed several times with organic solvents. But FTIR spectra at...

09 October 2018 7,108 17 View

How can I remove oleic acid from the final product?

I am synthesizing QDs, the final product is liquid, i tried use freeze drying, crystalization to make get powder pdoduct but no use, I looking for a valuable suggestion to remove oleic acid from...

06 July 2018 9,099 0 View

Could you help me to get well dispersed nanocluster TEM image?

I am trying to get well dispersed nanocluster TEM image with different concentration in DI water as weel as EtOh, but I am not able to see a clear nanoclusters in TEM image. can anyone help me for...

05 June 2018 4,612 5 View

How to select the buffer pH in the sensing platform?

I am working on sensing the metal ion using nanocluster probe, I the detection/sensing platform i have to use buffer to control the change in pH. Before I studiei pH stability (mentioned in the...

09 October 2017 6,622 0 View

Is there any much difference in quality of product ?

Am functionalizing a nanomaterials with polymers , if there is a sharp (more absorption) and broad (less absorption) bands FTIR spectra at same wavenumber for same compound (two methods) , does it...

02 March 2016 3,110 7 View

How to analyze a particular region of my simulation box in GROMACS?

Hi, I am using GROMACS 5.1.4 to simulate water in contact with a surface. I am only interested to calculate some properties of water near the surface. Let's say at a distance of x nm from the...

03 March 2021 9,989 2 View

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 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

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

How to evaluate unsupervised clustering metrics when some elements do not have a cluster label in the result?

I run algorithms like HDBSCAN and MeanShift, and compare them with K-means and GaussianMixture. The first two algorithms do not return cluster labels for some elements in the dataset. My question...

27 February 2021 428 3 View

How does GROMACS calculate the average structure of proteins?

I want to get a average structure from a pdb file containing multiple models. I used the command below: gmx cluster -f input.pdb -s topol.tpr -cutoff 20 -method gromos -av GROMACS...

25 February 2021 6,314 1 View

Why there are two peaks while using the mie plot of Silver nanoparticle?

Hi, I am trying to learn the theoretical modelling of silver nanoparticle using the Mie scattering theory. After that, I discovered a software named Mieplot developed by Philip Laven, where it...

25 February 2021 7,493 6 View

How to formulate Energy minimization in Molecular dynamics simulation for alloys using meam potential?

during MD simulation, the atoms are not moving as per required. The problem (as per my observation) lies in energy minimization technique. upon application of tensile strain in x or y direction,...

22 February 2021 380 5 View

How to resolve Gaussian error termination " Error termination via Lnk1e in F:\G16W\l103.exe" for TS(QST3)?

When I run the job for TS(QST3) in gaseous phase, it was completed without any error. But when I add water in CPCM model it terminated with an error: Inconsistency: ModMin= 2 Eigenvalue=...

21 February 2021 3,198 2 View

Magnetismic Gravity in the universe?

MAGNETISMIC GRAVITY What is magnetism? Something magnetic has a + and - charge. If 2 + or - are pushed if + and - are pulled. But what is the main reason for this? Why does magnetism have a pull...

21 February 2021 9,538 3 View

Karl Sohlberg

You will find some related discussion here: https://www.researchgate.net/post/How_many_copper_atoms_can_build_complete_spherical_nanoparticles

You may find the comments about magic clusters especially relevant.

https://www.researchgate.net/post/How_many_copper_atoms_can_build_complete_spherical_nanoparticles

Lingaraj Ryavanaki

Thanks Karl Sohlberg

Meiqing Liu

If using MS, MALDI-TOF-MS and ESI-MS should be considered.

A quantum machanical model-jellium model

Emission energy=EFermi/N1/3

(EFermr=Fermi energy level for gold atom,N=atom number)