Tables of dielectric materials: what is a modern update for Von Hippel's 1954 tables?

I have been working for a long time with the dielectric dataset at the Arthur R. Von Hippel's book "Dielectric Materials and Applications" (1954, reprinted in 1966). I am looking for related...

31 December 2017 938 3 View

How to design an electrode blocking scheme for dielectric spectroscopy?

My broadband dielectric spectroscopy (BDS) studies are mainly associated to soil samples. Nonetheless, any comment for other materials is welcome. It is well known that, when dealing with low...

05 June 2016 6,210 7 View

How does current density impact on electrode polarization effects in low-frequency imp. spectroscopy?

Usually we find at the spectroscopy literature the following concept: the electrode surface area is strongly associated with the electrode polarization (EP) effects, i.e., a smaller surface area...

31 December 2014 4,573 3 View

Do you know about any study that highlights the aspect "distance between the potential probes" in 4-electrode (tetrapolar) impedance measurements?

The electrode polarization (EP) effects can still be observed in 4E/4T (electrodes/terminals) systems even when platinization and similar methods to increase the surface area of the electrodes are...

11 December 2014 5,820 4 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View

In methylene blue test Why is UV absorbance reading very low as soon adsorbent is added and then increasing before reaching equilibrium?

Hello, I'm working on removal of methylene blue. 01. in the dark test very first reading is taken 15 minutes after adding adsorbent to the dye solution and that UV absorbance reading is very...

19 February 2021 472 5 View

If the electron is a wave, then what is its nature? Is it an electromagnetic wave?

If the electron is a wave, then what is its nature? Is it an electromagnetic wave? Thank you very much,

17 February 2021 9,024 4 View

How to perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

How to calculate ultraviolet dose in Gy or J/kg?

Currently I'm doing a literature review regarding the comparisons of different types of radiation such as uv, electron beam and gamma radiation. But I'm having a difficult time converting uv unit...

11 February 2021 7,642 3 View

How to model in HFSS or FEKO Free Space Material Characterization?

I am having trouble setting up this problem in HFSS or FEKO. In HFSS, I've tried both FEM and FEBI-IE solvers. With FEKO, I've tried it's MoM solver and default settings. I am would like model...

09 February 2021 375 2 View

Distribution of modes fields ?

Hi, We find a specific distribution of electric fields in structure for different frequencies which can be seen using em solvers and known as modes. I would like to know how we can choose the...

04 February 2021 10,043 3 View