Jayaramakrishnan Velusamy

13 Questions 29 Answers 0 Followers

Questions related from Jayaramakrishnan Velusamy

How can I determine the concentration of C-dots for Quantum Yield measurements?

I working with Carbon nanodots(c-dots) I would like to measure the Quantum yield for prepared samples and also I am very eager to measure the Two Photon Absorption(TPA). In order to realize...

09 September 2015 7,177 7 View

What is the relationship in single crystal transperency and bearing NLO properties or response?

NLO response of crystal is based on their molecular hiperpolarizabilities. how to it connect with transperency?

08 August 2014 2,927 4 View

What is single photon detection? How can nonlinear optical single crystals be used for single photon detection?

What type of growth method is suitable one for single crystals of organic and inorganic materials to be used in single photon detection?

02 February 2014 270 1 View

How to confirm the solution grown crystals are single crystal?

How to say solution grown crystals are single crystals (without single crystal XRD refinement) any other option or characterization?

11 November 2013 226 29 View

Can someone suggest any NLO practical applications of nanoparticles?

There is a lot of literature available on Google regarding characterization of nanopartical but is there a practical NLO application in nanoparticles?

08 August 2013 9,332 5 View

What type of nanoparticles can be used in nonlinear applications?

What type of nano particles can be used for this type of applications? Will metal oxide nano particles be suitable ones for this type of applications?

08 August 2013 4,416 5 View

How to set the scanning range and excitation wavelength in PL? What is relation between UV absorption and PL?

My UV absorption shorter cut off wavelength is 301 nm? How can I PL study for my material?

07 July 2013 1,380 1 View

How do simple organic single crystals give chromic effect? Is there any possible way or applications to observe chromic effect ?

I have grown organic single crystals which are a deeper yellow (slight orange) color? UV-Visible shorter cut off shows 501 nm. How can I identify if there are any chromic effects in crystal?

07 July 2013 3,546 2 View

How UV-Visible absorption study is associated with PL peaks in bulk mono crystals?

How to determine an exact excitation wavelength in PL measurement based on the UV-Visible absorption spectrum studies? How to interpret defects based on PL peaks in single crystals?

07 July 2013 6,853 1 View

How is the UV-Visible absorption study associated with PL peaks in bulk mono crystals?

How to determine an exact excitation wavelength in PL measurement based on the UV-Visible absorption spectrum studies? How to interpret defects based on PL peaks in single crystals?

07 July 2013 8,796 3 View

Can the quality (defect or crystalline perfection) of solution grown crystals be determined from etch pit density ?

I have grown monocrystals from solution growth techniques(both slow solvent evaporation and slow cooling) .How to calculate etch pit density? if values are lower (>15 × 102 / cm2 )what does mean...

07 July 2013 6,146 22 View

How to corrlate the defect nature and crystalline perfection of crystals by birefringence measurments?

The analysis based on the birefringence fringe paradigms or any other proof.

07 July 2013 3,499 1 View

What is different between ordinary prism spectrometer and constant deviation spectrometer?

Explain the difference in terms of accuracy of measurement (wavelength)and merits too. Except the alignment procedure time consuming difference.

06 June 2013 526 1 View