Ali Abdulkhaleq Alwahib

17 Questions 28 Answers 0 Followers

Questions related from Ali Abdulkhaleq Alwahib

Where can I found free software working on ocean optics spectrometer 2000+?

I am looking for free software work on the ocean optics spectrometer. I bough used one without software 2000+

12 May 2023 5,475 1 View

Is it possible to generate interference pattern ( interference fringes) using simulation program? what is the name of this program ?

I want to do an experiment using two optical fibers then flowed by (Y) coupler, at the single end of the coupler there is a CCD camera to see the fringes ... what is the program that will give...

24 December 2020 7,104 2 View

Is it possible to add Ag nanoparticles to Graphene oxide solution directly to form GO-Ag composite solution?

Add nano-particles to GO solution to form GO-Ag

16 April 2018 4,399 6 View

If my gold nanoparticles in 35 nm and thickness of this gold layer is 50 nm ..is this enough to generate localized surface plasmon resonance?

the deposited gold layer on cover glass slid in 50nm thickness has a particles size 35 nm..the excitation laser is 633 nm was used in prism based SPR ...is this enough to generate LSPR ? or I need...

06 April 2016 4,913 3 View

What is the output polarization if I get 1/4 wave plate followed by 1/2 wave plate followed by 1/4 wave plate?

and If I rotate the 1/2 wave plate 45 degree, what is the effect on the output polarization? thanks for you help

01 November 2015 7,880 3 View

When I sense heavy metal ions such as Pb using SPR why do I sometimes get red shift and other times I get blue shift?

the Pb heavy metals sensing in water using fiber some times I got blue shift when the ppm 5,10,15 but when go down to low ppm ( the refractive index equal to water RI ( such as 1, 0.1 0.001 ppm I...

11 August 2015 5,091 7 View

In SPR sensing method is the dissociation and association the same in heavy metals as in protein or different?

Is the association mechanism of heavy metals with sensing layer the same mechanism used for protein with sensing layer? ( association , stable , dissociation). Thank you

21 February 2015 2,965 0 View

Should I use SPR or LSPR when Au thickness is 50 nm?

When I made FESEM the gold particle size was between 30 nm and 60 nm, thanks for your help.

17 January 2015 374 4 View

What is the best scientific way to measure the sensitivity of an SPR sensor?

What I know there are 2 ways Δθ/Δn and sensogram curve. Is there first way will be enough? or second way will be better? or 2 of them are important? Many thanks for help.

27 June 2014 1,756 5 View

Is possible material work as sensing layer with near Zero absorption in visible range to work as sensing layer of SPR? ( 632.8 laser)

Sensing layer with near zero absorption in visible range deposited on gold using laser with 632.nm for sensing in SPR.

22 June 2014 3,133 2 View

Is a possible to saturate ferromagnetic material like Ni using normal magnetic field or not?

Is normal magnetic field, not vibration magnetic field, enough to saturate ferromagnetic material or not? Do I need to increase the magnetic field from 30mT to higher? Thank you very much.

21 May 2014 9,735 6 View

Is there any difference between SPR and MO-SPR in their absorption curves? Why are we now starting to go to MOSPR for sensing?

Is MOSPR is better than SPR in sensing?

28 March 2014 9,597 2 View

Can anyone explain why surface plasmon are able to confine the EM field in small, nanoscopic volumes beyond the diffraction limits?

Thanks in advance.

28 February 2014 9,199 4 View

I need a software that can help to control the lock in amplifier from the computer. From where I can get this software? Thank you.

I have lock in amplifer in my Lab RS830

14 January 2014 2,329 11 View

In Surface Plasmon, why do some papers use this N=n+ik and others use this N=n-ik ? I mean negative and positive.

Do the losses have the same meaning in these two mathematical expressions or not?

05 January 2014 2,032 2 View

How can I calculate complex refractive index (experimentally) and theoretically ?

N=n+ik How can I find n and k experimentally? I have composite material and I want to find the n and k to it .

02 January 2014 9,861 8 View

Is possible to replace Helmholtz coil with normal magnetic sold material to get 20-30 mT ?

With sold material I mean sold ring metal.

15 December 2013 6,213 3 View