Sara Ghayeb

29 Questions 14 Answers 0 Followers

Questions related from Sara Ghayeb

Excitonic peaks of MoS2 in C/MoS2 composite?

Dear researchers Can anyone tell me the effects of carbon nanoparticles on the excitonic peaks of the MoS2 nanosheets in C/MoS2 composite?

01 January 2019 7,549 1 View

Color of the exfoliated MoS2?

Dear researchers I'm trying to prepare liquid-phase exfoliated MoS2 in various solvents. According to the literature, the green-yellow color of the dispersion is a good indicator of the exfoliated...

09 September 2017 7,516 5 View

Material with high optical absorption at 1064 nm?

Dear researchers Can anyone suggest me a material with high optical absorption at 1064 nm?

01 January 2017 7,627 5 View

95Mo NMR analysis??

Dear researchers I need to perform 95Mo NMR analysis. Is there anyone who knows where I can have it done?

12 December 2016 1,123 0 View

Photoluminescence setup of liquid samples?

Dear researchers is there any difference between photoluminescence setup of thin film samples and liquid samples? for thin film samples, reflection is important. what about liquid ones? does...

11 November 2016 7,297 0 View

Band gap energy calculation of the exfoliated MoS2 nanosheets?

Dear researchers Is it possible to use Tauc equation for the band gap calculation of MoS2 nanosheets? I haven't seen it yet in the literature. is there any alternative way?

09 September 2016 4,918 9 View

What is the solvent of graphene oxide?

I want to clean the residual graphene oxide inside a quartz cell. what is the best solution?

08 August 2016 3,402 4 View

What does the FWHM of a peak in RBS spectra show?

01 January 2014 5,481 1 View

What information does a SEM map give us?

How can we interpret it?

12 December 2013 4,017 17 View

Which one has the highest photocatalytic activity, amorphous WO3 or monoclinic WO3?

12 December 2013 1,573 3 View

How can I extract the height profile from the AFM images by image plus software?

I use the extract profile option and draw a line on the image. I get line profile as y-x plot but I can't understand it. Shouldn't it be z-x plot for a horizontal line?

12 December 2013 8,385 5 View

What are the photocatalytic reactions of Methyl Orange decomposition by TiO2?

Is Methyle orange acceptor or donor? Which one of photo-induced charges (electron & hole) participates in Methyl Orange decomposition?

12 December 2013 5,885 4 View

How can I estimate the penetration depth of an incident KrF laser pulse into a thin film?

What does it depend on?

12 December 2013 788 1 View

What are the reasons for the different results of desired element concentration obtained from XPS, RBS and EDX?

12 December 2013 1,476 3 View

How to choose the cross sections when simulating my RBS results by SIMNRA software?

What conditions should be considered for cross sections selection? What is the difference between Rutherford and non Rutherford cross sections?

11 November 2013 3,530 4 View

What is the effect of laser annealing on crystallite size of a semiconductor?

Does crystallite size increase by increasing laser energy?

10 October 2013 7,739 2 View

What is the mechanism of laser-induced crystallization in semiconductors such as TiO2?

I read lots of papers but non of them mentioned the mechanism responsible for crystallization. Is there any book about this phenomenon?

10 October 2013 495 2 View

What is the difference between crystallite and grain?

10 October 2013 1,469 2 View

is it possible that Ti (titanium) and W (tungsten) form a bond?

Do we have TiW compound?

09 September 2013 4,892 5 View

O 1s core level spectrum of a metal oxide(MOx) consists of 3 contributions corresponding to hydroxyl group, C=O and M-O-M bonding?

Is it necessary to consider all 3 contributions even if the spectrum is symmetric completely? What about asymmetric? How to know the number of peaks for fitting by XPSPEAK software?

09 September 2013 1,349 2 View

How can I find the PCR files of WO3 & TiO2 for Rietveld analysis?

Is there anyone who has PCR files?

05 May 2013 2,304 4 View

What are possible ways to convert the energy of KrF laser to the corresponding temperature?

My samples were irradiated by KrF laser with a certain energy & I want to know the induced temperature on the surface of my samples. Can I use E= KT equation for this case?

05 May 2013 8,710 3 View

How can one change a crystallized WO3 thin film into an amorphous layer?

Does annealing in O2 atmosphere work?

04 April 2013 4,853 2 View

How can one measure the photocatalytic activity of TiO2 thin film?

Is it correct to immerse TiO2 thin film in a photoreactor which has methylene blue and measure the absorbance of methylene blue during irradiation time?

03 March 2013 3,629 6 View

Laser irradiation can change TiO2 thin film to blue. Is that because of oxygen vacancy creation?

If yes is it a remedial way to do laser irradiation in an oxygen atmosphere in order to prevent the colour change?

02 February 2013 9,656 6 View

What is the relationship between grain size in a thin film and bandgap energy?

Is it possible to use the energy formula of a particle in a well?

12 December 2012 4,250 3 View

What is(are) the deference(s) between epitaxial thin film and film which is single crystal?

Epitaxial thin film is the film with one crystal orientation, single crystal has one crystal orientation too.

12 December 2012 866 8 View

Is there anyone who knows some flexible polymer substrates for thin film deposition?

Exept glass, silicon,etc

12 December 2012 2,283 4 View

Is there anyone who knows some flexible polymer substrates for thin film deposition?

Exept glass,silicon,etc

12 December 2012 396 4 View