Do the nanoparticles have characteristic frequencies for FT-Raman and how to interpret the results with the standard data?

More Singaravelan Ramakrishnan's questions See All

Can any one suggest me the suitable application(s) for the CuNPs?

I have obtained characterisation results for my electrodeposited CuNPs and I'm looking for the suitable application(s). I'm ready to accept the collaborator for the same if any one is interested...

10 November 2018 3,900 4 View

Can any one suggest me the best journal in Elsevier with impact factor for my research work on electrochemcial synthesis of bimetallic nanoparticles?

Our current research paper describes the synthesis of Copper-Zinc bimetallic nanoparticles by electrodeposition technique with characterisations on TEM, SEM, DRS, XRD, XPS etc.,

04 May 2018 9,684 1 View

How do I identify the hkl planes in the TEM micrographs?

we have synthesized a bimetallic nano alloy which clearly gives TEM micrographs with clear lattice fringes and would like to identify the hkl

10 November 2017 2,622 0 View

Can anyone tell me what actually the refractive index of zinc nanoparticles?

I am indented to take zeta potential for my sample for that the refractive index is required.

01 February 2016 7,843 1 View

Does pH influences the catalytic activity of metal nanoparticles?

Read 1 answer by scientists to the question asked by Singaravelan Ramakrishnan on Nov 9, 2015

10 November 2015 9,723 1 View

How can I calculate the crystallite size of the nanoparticle using modified Scherrer equation?

I need to know whether the modified Scherrer equation is useful in calculating the accurate size of the nanoparticle comparing Williamson-Hall equation.

08 September 2015 7,688 6 View

Research Collaborator for paper publications

I'm looking for the research collaborator in the field of nanoscience for my paper publication. My research is based on the synthesis and characterisation of metallic and bimetallic nanostructures...

01 January 1970 9,156 4 View

Melt curve problem in qPCR?

Do these peaks in the curve indicate primer dimer or non-specific products?

01 August 2024 7,466 0 View

How to improve peaks separation in HPLC?

Hi everyone, I'd like to better separate two close peaks coming from a bioconversion sample, I'm currently using a C18 KromaPhase 4,6mm Ø.I. SCHARLAU, particle size (µm): 10, pore size (Å): 100,...

30 July 2024 435 3 View

Why do some of my Raman spectra show no signal at lower Raman shifts?

I'm using a InVia Renishaw Raman microscope system (785nm wavelength, 600l/mm grating density) to acquire Raman images on human brain samples, at 50um resolution. The samples are placed on MgF2...

30 July 2024 8,771 3 View

I have synthesized a composite of ZnO and In2O3 with variations in ZnO content. In Raman , what is the peak observed at 130 cm-1?

Dear all, I have noticed, as the ZnO content increases, the Raman intensity at 100cm-1 also increases. However, there is a peak nearby at 130 cm-1, which I could not find in any paper related to...

28 July 2024 5,410 1 View

What does an additional peak in FTIR between 3100 and 3300 nm affect the quality of the material, benzethonium chloride USP??

I do not know much about FTIR! The material Benzethonium Chloride USP was compared to a reference standard in regards to FTIR, as per the USP testing: Identification B. Infrared absorption (FTIR),...

16 July 2024 6,918 7 View

Validated HPLC method for the estimation of the Amphotericin B ?

During the release test of Amphotericin B using 1% Tween 80, i observed three peaks even in the standard. The first peak consistently yielded results around 500%, while the other peaks showed...

08 July 2024 1,330 0 View

Why there are no peaks at downfield NMR of Cobalt and Nickel complexes?

I synthesized some paramagnetic cobalt and nickel complexes (expected to be Co(II) and Ni(II)) using a bidentate ligand - N of pyridine ring (aromatic) and O of P=O (aliphatic), and I obtained...

03 July 2024 3,410 4 View

How can I put small FWHM in CasaXPS?

I'm trying to fitting Cu Auger peak into various state (Cu0, Cu+, CuI etc..) In Cu0, one of the peak's FWHM is 0.84 but when I try to enter smaller value than 0.89, "input error" is occured. How...

02 July 2024 4,932 3 View

Roughening Silver Electrode Using CH Instruments for SERS applications?

I am in the process of roughening a silver electrode for SERS measurements using the latest version of CH Instruments. Most procedures in the literature mention sweeping the potential from -0.3 V...

30 June 2024 4,639 3 View

What is the reason of appearance of 2 or 3 peaks in zeta potential analysis of sample?

Hello I have prepared metal nanoparticles and did zeta potential. Normally there is a single peak in sample but now there are 3 peaks. I prepared sample for analysis first I prepared 10 mg/mL...

30 June 2024 1,063 4 View