Where is it possible to buy a polarizer device for a FT Raman spectrophotometer equipped wit Nd:Yag lazer source?

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Could anybody tell me how we can calculate the relaxation energies by using a Gaussian program?

For calculation of intraction energies it seems it is necessary to consider the relaxation enrgies.

06 July 2014 4,760 1 View

Does anybody knows about the role of K ion in resisting of plants against dryness?

K ion increases the resistance of plants in dry weathers.

04 May 2014 1,474 3 View

What is "Error in CO-Value" when starting to run the AIM2000 program?

By running the aim2000 program for a complex molecule I encountered with the "error in CO-value" how can I overcome to this problem

01 January 1970 8,292 4 View

Is proton tunneling a sudden process or non-sudden

I mean proton tunneling suddenly happens or gradually pass over a saddele point without using enough energy?

01 January 1970 5,920 6 View

Who knows it it is possible to use higher memory for Gaussian o9 in windows

I have a computer with 12 GB ram while I can use onle1.5 GB memory. How it is possible to use more memory for runnige Gaussian 09

01 January 1970 7,475 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

absorption= 1-mag(S(FP1:1,FP1:1)S(FP1:1,FP1:1))-mag(S(FP2:1,FP1:1)S(FP2:1,FP1:1)) is it correct for absorption ?

hi everyone I am simulating a unit cell structure in HFSS using Flouquet port having two modes for absorption I have used this formula:- absorption=...

17 February 2021 9,178 2 View

Can I measure absorbance efficiency with wavelength in a spectrophotometer?

I measure the wavelength of material in a spectrophotometer and it peaks at 275 and its absorbance is 100. I mix it with an adsorbent and it adsorbs the first material, but when I measure the...

16 February 2021 7,515 5 View

Unusually Busy Raman Background?

Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...

15 February 2021 9,922 5 View

How to detect uv vis spectrum of nanoparticle under 300nm?

I try to make the indium nanoparticle and check the uv vis spectrum. I heard that In nanoparticle has surface plasmon resonance peak at 200~300nm. But most of solvent has absorption peak under...

14 February 2021 6,950 15 View

Mukkera Rajesh

http://bwtek.com/technology/raman-systems/?gclid=CjwKEAiAuea1BRCbn-2n7PbLgEMSJAABQvTTOFWLmzjX4qRNUcR9dF102m0rdY4EHgwN4t9tnS8NMRoC6STw_wcB

Try this

Eric Van Steen

It depends on the Raman spectrometer you have. Look at http://www.perkinelmer.com/CMSResources/Images/46-74723PRD_RamanPolarizationAccessory.pdf