Can anyone assist with the use of Diffuse Reflectance data to obtain the Band Gap for my materials.

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Can someone explain how it was possible to acheive a value of 110% for percentage reflectance during DRUV-Vis?

My material synthesized is being tested for reflectance properties using DRUV-Vis. Two particular materials have maximum reflectance values of 110% and 103% at wavelengths of 374nm and 378nm...

31 December 2016 3,822 5 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

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 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

In methylene blue test Why is UV absorbance reading very low as soon adsorbent is added and then increasing before reaching equilibrium?

Hello, I'm working on removal of methylene blue. 01. in the dark test very first reading is taken 15 minutes after adding adsorbent to the dye solution and that UV absorbance reading is very...

19 February 2021 472 5 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

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