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Questions related from Nguyễn Thanh Lâm
Dear Colleagues, I am investigating methods to determine the photodynamic activity of photosensitizers for photodynamic therapy. One of the methods being used is absorption spectrometry. A work...
01 January 2020 4,899 3 View
Dear Colleagues and Professors, I am doing experiments on the interaction between magnetic liquid and strong magnets to display the magnetic field line of a magnet. In best conditions, the...
10 October 2018 862 12 View
Dear colleagues, We are conducting experiments on battery-magnet systems running in copper tube (also known as World's Simplest Electric Train). Our equipments includes: -A pin size AAA...
09 September 2018 8,404 5 View
Dear colleagues, I found that the results of the ranking of the Times Higher Education and QS University Ranking are different. For example, according to the ranking of the QS University Ranking,...
02 February 2018 5,018 18 View
Dear Colleagues, The Nobel Prize in Physics 2017 has been awarded to Rainer Weiss, Barry C. Barish and Kip S. Thorne for decisive contributions to the LIGO detector and the observation of...
10 October 2017 3,641 2 View
Dear colleagues,Could you please suggest me some rapid publication ISI journal list in nanotechnology, thinfilm (namely composite material, compound semiconductor thinfilm) with impact factor...
09 September 2017 3,729 11 View
Dear colleagues, Could you please suggest me some rapid publication ISI journal list in Optics, Crystal growth with impact factor range from 0.5 to 3.0 (rapid publication)? I know following list...
09 September 2017 7,602 13 View
Z-scan technique is very powerful and simple in determining both the sign and magnitude of the nonlinear refractive index and the nonlinear absorption coefficient . The original Z-scan was...
09 September 2017 9,406 2 View
In Z-scan technique, we often use motor (digital mcrometer transformer) to move sample. I think that motor is ued to automate measurement. If there is no motor, for example, we can move sample...
09 September 2017 6,643 14 View
Dear colleagues,It is shown that thermal nonlinear optics is very strong. However, their response time is too slow, about 10^-3 second compared 10-^15 second in electronic nonlinear optics. By...
09 September 2017 3,818 2 View
Dear Colleagues, I'm studying the Self-defocusing effect in Aniline Blue organic. Initially this material is in powder form. However, to exploit their applications, we have to convert them into a...
09 September 2017 2,117 4 View
Dear Colleagues,I'm investigating third-order nonlinear optical effects in dyes such as Acid Blue 29, Oil Red O, ect. To exploit the applications of these materials, we have to convert them into...
09 September 2017 9,563 2 View
We know that organic material often has a strong nonlinear optical effect due to delocalized electrons at pi-pi* orbitals. However, I still do not understand why they always have negative...
09 September 2017 2,874 9 View
Dear Colleagues, I'm studying the third-order nonlinear optical effect in organic material (polymer film of aniline blue, acid blue 29, Oil red O), but I worry organic material has a lower...
09 September 2017 3,270 5 View
Dear Colleagues, From relation: P=ε_0 χ^((1)) E I suppose that in an isotropic medium, χ^((1)) is the scalar quantity, vector P and E are in the same direction, while for an anisotropic medium,...
09 September 2017 1,288 5 View
Dear Colleagues, I'm studying self-defocusing effect in organic material. In the light beam on the screen, I observe the rings like attached images. Is this the result of diffraction? What is the...
09 September 2017 1,805 18 View
I am studying a third order nonlinear optical organic material with a negative nonlinear refractive index, but the total refractive index is positive (n=n0+n2I, n2
08 August 2017 7,052 5 View
Dear colleagues, As far as I know, reverse saturation absorption is one of the mechanisms of optical limiting effect. Because when the light intensity is strong, the absorption coefficient...
08 August 2017 4,916 11 View
Dear colleagues, I have read many papers on Z-Scan measurements of material, I see that the error is in the range of 25 to 40%. Some authors claim that the error is up to 50%. And the...
07 July 2017 3,143 26 View
Dear colleagues, Recently, we have seen many studies on third order nonlinear optical effects and optical limitting in organic with CW laser. Some researchers wonder whether these effects are...
07 July 2017 5,133 13 View
Could you please tell me how long between the acceptance and proof correction in a journal ?
12 December 2015 5,378 2 View
Some researchers say that bessel beam is the best beam for second harmonic generation, that is, conversion efficiency of the second-harmonic generationwith such a bessel beam can be larger than...
02 February 2015 8,053 7 View
