TPA and SPM in water - any suggestions?

10 January 2014 1 7K Report

Are the two-photon absorption coefficient in the UV (around 260 nm) and the nonlinear refractive index related for water? In other terms, should I expect TPA to be strongly correlated to SPM in water?

Prem B Bisht

The SPM is a parametric process (involves nonlinear refractive part) while the TPA is nonparametric (involves absorption) process. Check the purity of water by simple absorption runs in the region of interest.

Badges
Science topic

More Carlo Altucci's questions See All

Is color and shape as variables enough to study microplastics for a college student?

Microplastic

15 June 2024 5,416 2 View

What is an "end-to-end" model?

I've seen this term used in articles related to food web models, but I need a basic explanation for it. Thanks in advance.

23 August 2023 9,412 0 View

What is the recommended sequencing coverage for characterizing the plasmidome and virome from WGS and RNAseq data?

Dear colleagues, I am planning a project to characterize the plasmidome and virome of plants from metagenome and metatranscriptome sequencing data, however, I do not know what is the recommended...

04 June 2023 10,027 1 View

How estimate protein concentration by alternative method?

Hello to everyone. My work focus on studying PTMs and I have successfully phosphorylate my protein in vitro (Checking the reaction products by SDS-Page, all of my protein should be...

29 March 2023 1,640 3 View

Will a signal peptide still be cleaved if GFP is fused in front of it?

I am studying the subcellular localization of a protein. To see if a GFP fusion protein can be compared to the native protein, I fused GFP to the N-terminal of the protein. In my western blots and...

01 March 2023 749 0 View

Simulation with schottky contacts will not converge?

Hi I am trying to simulate a N-doped nanowire with two schottky contacts and the model wont converge for positive applied potentials, no matter how hard I tried. For negative applied potentials...

05 February 2023 1,624 0 View

Train cohort and test cohort in machine learning survival analysis, what to do?

Hi there, I want to perform different Machine Learning approaches for survival analysis in cancer. I have a database of 330 patients. I have some unique evaluated features so I can't use online...

25 December 2022 1,802 2 View

ENDNOTE 20: How can I set integrated library and online search library?

Hi there! I've just moved from ENDNOTE previous version to the last one v20. In the previous ones I could insert automatically a reference on while writing on word while being in the integraded...

14 March 2022 2,381 3 View

Does anyone know where I can obtain a known isolate of Pseudomonas savastanoi pv. phaseolicola?

I have checked some collections (http://catalogue-cfbp.inra.fr/recherche.php http://www.wi.knaw.nl/collections/ https://www.dsmz.de/) but most of the strains were isolated a long time ago and the...

20 February 2022 2,781 1 View

How to interpret network meta-analysis forest plot?

How can I interpret and write down the results of the following forest plot? For example, top left graph shows comparison of AvsB and includes 3 studies A B C, what's the meaning of red and blue...

02 February 2022 8,797 3 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...

13 August 2024 9,795 0 View

Using OBD technique i am trying to measure laser induced shockwaves velocity i found that at start velocity increases and then decay?

i am unable to interpret why its increases in start as shown in figure

11 August 2024 2,179 1 View

Which Scopus Journal provides the most affordable fees?

"PUBLISHING IN A SCOPUS JOURNAL" Researchers are now at a cross road. The critical need to publish in a Scopus or ISI, etc journal is ever vital. Journal Publication fees must be submitted....

10 August 2024 8,621 1 View

Seeking Advice on Viability and Execution of Undergraduate Thesis Topic?

Hello everyone, I am currently developing a thesis proposal and would appreciate your input on its viability and how to effectively carry it out. My proposed topic is: "Does the perceived threat...

10 August 2024 8,992 0 View

Hello researchers Is this a random laser or just fluorescence?

I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.

09 August 2024 9,894 2 View

Who will be moral responsible for the death of thousands of people in the event of an earthquake?

Who will bear moral responsibility for the deaths of thousands of people in the event of an earthquake? Weeks and months remain before the onset of strong earthquakes that bring death to...

08 August 2024 6,134 12 View

Are there any instruments for studying time similar to the way it is in space?

There are a huge number of methods for studying objects in space, according to the senses (and not only). Mechanical, thermal, optical, acoustic, electrical, magnetic, based on particle beams,...

06 August 2024 7,102 0 View

In the case of a wound l recurrence after radical breast cancer and sentinel lymph node biopsy. Are the sentinel lymph node procedure recommended?

In the case of a wound l recurrence after radical breast cancer and sentinel lymph node biopsy. Are the sentinel lymph node procedure recommended? If no axillary lymph node dissection was not...

05 August 2024 8,056 1 View

Could dyes amplify the spectrum of light to a specific wavelength?

I am interested to know the behavior of dyes toward light. Specifically, Blue dyes re-emit the spectrum, especially from the green zone (known as principal in LED lamps, and blue dyes are known...

05 August 2024 3,290 1 View

How can we use mobile apps for improving students' academic performance?

Mobile apps can be a powerful tool for enhancing academic performance, how can we use mobile apps for improving academic performance

04 August 2024 9,492 0 View