How can i call this type of defect?

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How to determine the size of an obstacle using ultrasound sensors?

Dear colleagues! Share information on possible algorithms for processing signals from ultrasonic sensors, allowing you to assess the range and size of obstacles (in horizontal and vertical...

09 March 2020 1,554 3 View

Did anyone used Lipogro or Fetalgro for cell culture?

I wonder if anybody used Lipogro or Fetalgro for cell culture? Does either match or outperform FBS for cell lines?

09 February 2017 934 1 View

Where can I find bankruptcy statistics?

I am intending to predict default probabilities by using logit regression on financial ratios of several companies from the same sector. Any idea where could I find a data set of companies from...

12 February 2015 2,206 3 View

What methods are known to introduce and evenly distribute an additive in micro amounts (say, 0.01%) in viscous fluid?

The problem is real, for example, in polymer industry. Micro and nano sized additives tend to aggregate. Their even distribution is always a challenge, especially in a viscous fluid. Which...

24 November 2014 9,908 6 View

Can anyone help me to find a value of the YFeO3 surface energy or to give advice how can I calculate it from another data?

Surface energy of YFeO3 (yttrium orthoferrite).

02 September 2014 9,377 3 View

How can I separate endothermic and exothermic peaks on DSC-curves if I have no idea about occurring processes?

I investigate chemical and phase transformation, occurring under thermal treatment of the glycine-nitrate combustion products. I know that my curves is superposition of the endothermic process...

23 April 2014 6,533 20 View

Very old typewriter

I found recently an old, but quite functional mechanical typewriter. This is "Continental", made in Chemnitz, Saxony, in 1943, shortly before the bombing of the city by Anglo-American aircraft,...

01 January 1970 5,054 7 View

Publicly available single-cell & T-cell/antibody immune repertoire COVID-19 datasets

To accelerate the COVID-19 research and vaccine development we collected a list of publicly available datasets with single-cell (scRNAseq) and T-cell/antibody immune repertoire (AIRR / RepSeq /...

01 January 1970 3,670 4 View

Can you recommend an efficient phosphor excitable at 450 nm, emitting in VIS having 5 ms to 50 ms afterglow decay time and small particles < 5 um ?

I am looking for a high efficiency phosphor powder for making printable ink. The required excitation is about 450 nm, emission small be visible. The particle size needs to be small enough for...

01 January 1970 5,712 3 View

Possible problem for showing 0.2 sun intensity instead of 1 sun intensity in AAA class Newport solar simulator?

We have a AAA class Newport solar simulator. We changed the Xenon Arc Lamp recently (XBO450W, Make:OSRAM) as the lifetime got over. However, the intensity is coming to be only 0.2 sun instead of 1...

14 February 2021 9,998 3 View

What causes defect peak broadening?

Say we observe yellow and blue luminescence in GaN, and these defect peaks are always broader than the BE peak. What factors contribute to defect peak broadening? Please help me list out such...

25 January 2021 1,733 3 View

What are the primary defects associated with welding druring construction-stages which might influence the capacity of the gusset-plate connections??

Dear researchers What are the primary defects associated with welding druring construction-stages which might influence the capacity of the gusset-plate connections in concentrated braced frames?...

06 January 2021 797 3 View

Why dielectric anomaly on the dielectric constant curves tend to disappear for a particular Mn doping content?

Why dielectric anomaly peak related to the defect dipoles present in the paraelectric region (around 450 K) of temperature dependent dielectric constant curve tends to disappear? The dielectric...

25 November 2020 209 2 View

Will the wider bandgap be at the core or outer layer of radial sc?

I am simulating a radial p+AlGaAs-pGaAs- n+GaAs Solar cell. AlGaAs has the wider band gap. I want to know if and how it matters whether tha AlGaAs is at the core or the outside. I know in tandem...

06 November 2020 9,293 4 View

What is the difference between an alloy and a solid solution ?

e.g. the difference between AlxGa1-xAs (ternary alloy) and (AlAs)x(GaAs)1-x (solid solution)? - From thermodynamic point of view? - From crystallographic point of view ? - From growth process...

19 October 2020 2,194 8 View

Can a defect level energy be higher than the indirect bandgap of a material?

The emission energy from PL is coming higher than the indirect bandgap of the material? What can be interpreted from this? Is it possible to have a defect level along 'K axis in the band structure...

15 September 2020 8,015 6 View

What is a good reading on determination of electronic bands of semiconductor?

I am a looking for step-by-step, clear and rigorous explanations of methodologies to compute electronic bands of semiconductors (GaAs for example) by solving the Schrodinger equation with the...

06 September 2020 366 3 View

How to apply a different material on a group elements of global model?

how to apply a different material on a group elements of global model? i have a wind turbine blade model (complex model) . I want to model a defect on the blade by reduction of young modulus of a...

17 August 2020 1,377 3 View

What if I can't find k values for n,k files in Atlas, Silvaco ?

Hello, I am looking for simulating GaAs(x)N(1-x) Material is Atlas, But I am not able to find the k values to give in the n,k index files, but I have the data for n. What should I do?

30 July 2020 7,912 2 View