What are the Terahertz Time Domain Spectroscopy methods?

More Elnaz Mahmoodi's questions See All

Discontinuity in the waveguide?

In the process of fabrication waveguides on lithium niobate and aluminum deposited on it with a thickness of 160 nm, after lithography I have a break in the waveguides as shown in the figure. What...

10 November 2023 7,239 3 View

How to measure the amount of PEDOT:PSS coating on PCL?

I wanted to know the best way to measure or at least compare the amount of PEDOS:PSS coated on a PCL film.

13 September 2023 3,748 2 View

How can I do anti-inflammatory assay by plate reader?

Dear friends, I am trying to measure anti-inflammatory of chamomile according modified Williams et al. method by BSA at 660 nm. The problem is that data is over even empty plate is approximately...

22 May 2023 6,747 0 View

How can i prepare a loop with 100 or 200 microliter for HPLC?

we have a 20 microliter volume loop, but i want to use more volume loop because of more injection volume

31 January 2023 5,222 5 View

MBTI personality test-calculating Cronbach's alpha?

If anyone is familiar with the MBTI personality test, I have some questions about calculating Cronbach's alpha. Please let me know if you can assist me with this.

10 January 2023 9,428 8 View

What free Discrete Element Method (DEM) software would you recommend for the Particle Packing Simulation of Recycled Aggregates?

I need to perform DEM simulation for particle packing of CDW-based aggregates (geopolymer mortars), Can you folks recommend a free software, student version, trial version or code-based simulation...

23 November 2022 9,897 3 View

Why does water surface tension increase when we add methyl orange to it?

Recently i made 5 dilute solution of methyl orange in water, then measured their surface tension. results showed that surface tension increased by increasing the concentration. dose any body know...

26 July 2022 7,888 7 View

Can I use decision-making models within a health promotion program planning model?

I was wondering if I can use the "Ottawa Decision Support Framework" for designing the decision-making counseling within a counseling program developed by "Planning Health Promotion Programs...

26 February 2022 9,810 3 View

What happens in the reaction between Dithizone and Zn?

In my work, I want to use Dithizone as a reagent for detecting Zn. I have some question and I`d appreciate it if anybody helps me with these questions: - What happens in the reaction between...

07 December 2021 6,067 11 View

Can the weight of criteria in MCDM methods be negative?

I want to use an objective weighting method for weighting my criteria in TOPSIS and this weighting method gave me negative weights for some of the criteria. Can I use these weights? Can the...

09 October 2021 6,257 14 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View

Mossbauer spectroscopy Co0.6Mn0.4Fe2O4 MNPs?

Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.

31 July 2024 9,140 2 View

How to calculate conductivity using Electrochemical Impedance Spectroscopy's Nyquist plot?

Hello everyone, I am new to this characterization but watching videos on youtube I have already plotted a Nyquist plot (Z' and -Z'') and already fitted models on my material using Zsim. But now I...

29 July 2024 1,376 0 View

Why semicircle of nyquist plot is not complete?

While I am doing HER, I noticed that nyquist plots of Electrochemical Impedance Spectroscopy (EIS) is not complete. Will it affect for the Linear Sweep Voltametry (LSV) data? However, I can found...

26 July 2024 7,542 4 View

What is single absorption ESR spectroscopy ?

In the context of Electron Spin Resonance (ESR) spectroscopy, under what conditions is an absorption spectrum considered to be a single absorption spectrum?

25 July 2024 2,325 1 View

Can we fit a gaussian Fit on a LIBS Peak ?

Though much literature suggests fitting a Voigt profile on a LIBS peak, is it also possible to fit a Gaussian profile on the LIBS peak? I have 204 spectra files, and I am building a pipeline for...

23 July 2024 6,127 1 View

What binder would be the best choice to modify glassy carbon electrode with a 2D Material like Graphene or MXene?

I am trying to drop cast 2D Materials on Glassy Carbon Electrode for Cyclic voltametry and EIS purpose. What would be best binders to use?

23 July 2024 5,776 2 View

What does negative readings in spectrophotometer denote. Was testing TSS content of bacterial cultures?

I was performing estimation of Total Soluble Sugar content in bacterial cultures by Anthrone method. Out of 9 samples, only one sample showed positive reading while others had a negative reading...

22 July 2024 9,576 4 View

How do you decide an optimal AC amplitude for non-faradaic electrochemical impedance spectroscopy?

I work with planar interdigitated electrodes (IDEs). The finger width and the spacing between the fingers are 5 micron. The surface of the IDEs is coated by a non-conductive polymer layer...

16 July 2024 5,031 1 View

Why is EIS important even if the cell is only run under DC conditions?

If impedance is an AC phenomenon, or if AC causes certain cell phenomena to become prominent at certain frequencies, why do we care about them? Under working conditions the cell will be...

14 July 2024 6,321 1 View

Jürgen Weippert

These two recent reviews and the references therein might give you a starting point regarding the use of THz/Ir-spectroscopy:

Article Time-resolved infrared spectroscopy in the study of photosyn...

Chapter Introduction to State-of-the-Art Multidimensional Time-Resol...