Advanced Materials - Science topic

Greetings,

I am currently engaged in research involving novel heterostructures composed of various materials. In my investigation, I have observed that the Valence Band Maximum (VBM) and Conduction Band Minimum (CBM) of both parent materials are initially located at the K points. However, upon forming the heterostructures, there is a noticeable shift in the VBM and CBM to the G point. I would greatly appreciate it if anyone could recommend relevant literature or share similar findings. Thank you.

Hello everyone, I want to transfer hBN on other materials and it's important for me to know the direction of hBN. So, is there any way to determine it? Can polarization Raman do it?

Looking forward to your suggestions!!

I did compression test on Instron 8801 UTM machine. I like to validate my obtained compression stress, Compression strength value in simulation software. My crosshead displacement speed is 2mm/min.

In this case, which module I need to select? ( Static structural or dynamic or quasi static or non linear simulation).

I am using Fusion 360 for simulation. How to correlate the compression stress with the simulated results.

"6th Edition of Advanced Materials Science World Congress (Adv. Materials Science 2024)"

Given data: Viscosity of the oil at 40 degrees is 416 cSt and viscosity of the oil at 100 degrees is 32 degree.

Hi

We were surprised during the preparation of magnetite (Fe3O4) usung the co precipitation method

During the preparation, we started as usual with 1:2 ratio of Iron II and iron III

salts , we added the ammonia under N2 and everything is perfect

When we used ethylene diamine to functiolize the surface, things went OK and we got the beautiful black Fe3O4 NPs . But when we used phenyl diamine, it did not work and the stuff was oxidized to brown Fe2O3!

Any ideas?

I am having trouble determining which microstructure would be seen at each temperature.

Thank you

I have older version of x'pert highscore software and what to do for pdf2, pdf 4? Please suggest me or share the link of x'pert highscore software latest version (free)/ free pdf2, pdf4.

I'm working on a material, and when I put it into physical balance and try to measure its weight, it reacts quickly with the environment; how can I handle the situation without using a glove box?

If you look at a typical Ashby diagram, you will notice that the fracture toughness based on K-factor is superimposed on all material classes.

Is this an ingenious solution or is it too simple?

I prepare a chitosan solution in acetic acid (0.5 M). Some of the small threads are remained in the solution. In literature it is reported that solution is filtered before using. I want to know which filter is suitable for the filtration of chitosan solution?

Thanks

Dear professors and Experts,

According to recent research and articles, it seems that materials science and engineering is going to have a critical role of the future of science and even engineering. As you all know it's a vast field of research. I would like to have your opinions in this regard. What will be the next of materials science? Which branches will do well and is critical than others?

Please let me find your awesome answers.

Best regards

Details can be seen in the attached file

It's quite confusing to distinguish between the definitions. To me, autofluorescence fits all. But what is the correct terminology to use when talking about biological cells, proteins (such as GFP), and generally any material?

Hello dear researchers.

Please, how do I know that I have done a good optimization of the structure (I use abinit), should I see something in the output file or just compare the cell parameters with the experimental values?

Thank you in advance.

Sincerely.

I recently received an email from the committee of WCAM Events about 9th Annual World Congress of Advanced Materials 2023 (WCAM-2023) which will be held in Tokyo, where I'm supposed to be an invited speaker.

"On behalf of committee and based upon your outstanding contribution in this field, we cordially welcome you to deliver a presentation on Virtual Learning Environments

The rest of the email is well written, and the website claims to have important speakers who are well-renowned. I guess this email is a kind of scam, but it's not clear to me how the scam would go.

I study the delamination of laminates upper and bottom skins of honeycomb composite structure simple supported from two sides and under bending stress.

I consider the developed tension on the bottom skin as the main peeling force that cause delamination.

Is my thinking correct?

Also, do you suggest textbooks?

In literature, many researchers recommend prob sonication for stability but in my observations bath sonication gives better stability to hybrid nanofluids. So is there any influence of the sonication method on stability? Does it have anything to do with the frequency of sonication?

and which method is best by your recomendations

Dear researchers,

My research area is related to the development of metallic composites. I am switching to sensor development. Basically, I will work on the development of advanced materials for sensor applications. I need your guidance, suggestions, and ideas. I am also looking for collaboration in this area.

Looking for your valuable replies.

Recently, I submitted a manuscript to Small and later to Advanced Materials (both from Wiley) which was rejected for considering for review by both journals on the base of self-plagiarism. Referring to the iThenticate report, they claimed that I had copied substantial parts of the Introduction, Experimental section and Results from one of our (already published) previous papers. This is true in the sense that the scientific (literature) background and the description of the experimental setup and the measuring protocol contained very similar (though reworded) sentences. However, the samples measured by the same experimental setup and measuring protocol were quite new and consequently the results presented are different from those reported within our previous publications. This fact did not hinder the editors in claiming that what we did is a breach of the journals ethical guidelines. Whereas the ethical guidelines both of Small and Advanced Materials says: “Some reuse of text from the authors' own (cited) work may be appropriate in an introduction or experimental section, but there should not be substantial overlap in the main discussion.” In our paper, according to the iThenticate report, practically no textual overlap can be seen in the Discussion.

In the Results, there are overlaps in the figure captions and this illustrates well how absurd is the accusation of self-plagiarism. The figure captions, indeed, are practically the same in our present and previous papers. The iThenticate report notices right away that the same sentences are used in both papers. However, it does not recognize that the samples to which the figure captions refer are different in both papers. If I want to write that the magnetization is measured as a function of temperature, no matter how I say it, I have to write that the magnetization is measured as a function of temperature. There will always be common words and the computer program will recognize them. The same is true if I describe how a curve behaves in a plot. It can increase, decrease and have a maximum. If two different samples give similar dependences of anything as a function of anything, similar words have to be used for the description and the computer program will recognize them.

I think it is the duty of the editor to recognize that this self-plagiarism is formal and it may be the reason that even the journal’s ethical guidelines allow this type of text overlap.

The editors suggested that the paper be entirely rewritten before resubmission to another scientific journal. However, it is impossible to implement by fulfilling the criteria on the basis of which our manuscript was rejected. The only solution would be not to publish it. It is a Catch-22.

I think that the editors of Small and Advanced Materials misuse the iThenticate report contrary to its original purpose. Therefore, I asked in an appeal to Advanced Materials that the matter be discussed before an independent body and that it make a decision. Instead, the editor against whom I filed the appeal answered repeating the accusation of our violating the journal’s ethical guidelines. It means that the independent body consisted of him/her or the body was not even set up. Anyhow, the journal did not provide a fair remedy to my appeal.

Have you ever encountered this type of editorial attitude? I have been in the field of scientific research for 40 years with almost 200 published papers and I have never met such a behavior. What is your opinion?

Laszlo F. Kiss

P.S.: In the meantime I have uploaded the manuscript to ArXiv (2209.04199).

Dear reserches,

A silver halide-containing photochromic glasses exhibiting refractive indices between 1.585-1.610 in response to radiation exposure.

This domain is not remarkable due to my experiments.

Could you give me another suggestion?

Kind regards,

Farhad

I am trying to optimize a molecular crystal using CRYSTAL17 software. I am getting error that the basis set I am using is linearly dependent. How can I solve such issue.

I tried changing my basis set but get same error. I tried changing k points and DFT integration grid but get same error.

Please help me solve this issue or tell me what I should do to avoid this in future.

Nbc-Ni Cermets samples are sintered in a vacuum sintering furnace at @1450 degrees. The Samples were placed in the Alumina Piece as shown in the attached pictures. after sintering the color of the alumina piece changes to blue as shown in the picture. what can be the reason behind it? Thanks

I have installed the DAMASK successfully with the help of the Internet. However, there is no specific tutorials about how to carry out a simulation. I have read all the Documentation from the website(https://damask.mpie.de/), but still do not know the complete and specific analysis procedures. If there is any step-by-step simulation tutorials, that will help me a lot. Thanks a lot!

Hello,

I would like to review recent developments in high-strength alloy systems for applications at 1200 ^oC. As far as I know, Ni-based superalloys lose their strength over 1000 ^oC due to the dissolution of Ni₃Al precipitates. Therefore I am wondering about what alloys systems (preferably non-refractory) are used for very high temperature (1200 ^oC) applications? Any recent developments in Ni-based superalloys that permit high temperature usage? Kindly provide some references.

Thank you.

Hello Everyone,

In many materials we can observe linear band crossing even above or below the fermi level. So what is the importance of having DIrac points somewhat away from fermi level (lets say around 2eV) ?

Can any crossing of bands which is linear leads to a DIrac point ?

We need to characterize a few ceramic composite materials using chemisorption to find out the percentage of active metal surface area.

We are also looking for other methods that would help us find the active metal content reliably. It would be of great help to know if there are other techniques that could help us understand our catalyst better.

Thanks

I am looking for detailed ebooks on architectural materials and finishes that includes the whole list of pros and cons of using that particular material. Can someone suggest me some ebooks/magazines you came across?

Dear researchers,

I am working on Mg composites fabricated by powder metallurgy. I have investigated the wear behavior of Mg-based composites with variation in temperature. I observed that wear rate increased with an increase in the wear temperature. Can anyone explain me in detail, why is it happening? What is the mechanism? I am looking for your responses.

Thank you so much.

Hello,

One of my colleagues is working with piezoelectric components and couldn't find the shock response spectrum for various piezoelectric components. Can anyone please share your idea to deal with the calculation process of shock response spectrum (srs) of piezoelectric components? However, any informative links that contain useful resources or details will be very helpful.

Thank you for your time and guidance.

Best wishes,

Dear Researchers :

Hope this discussion seems interesting for some of you

Is it correct to say :

"All Dielectric Materials are Electrical Insulators, but not all Electrical Insulators are Dielectric Materials" ?

I have this doubt, hopefully someone can provide a correct answer, and: Why not, or Why is it

Best Regards !

Ansys Granta is not a free programme. Is there any other materials selection software that you would recommend, and what is the name of it? ( https://www.ansys.com/en-in/products/materials/granta-selector )

As every keyword have certain experts associated with it, based on their area of expertise. Can we initiate a devoted section for research collaboration, especially for the calls requiring bilateral or multinational collaborator?

Presently, My group is looking for a German collaborator in the area of " High performance based C-C composites" on following call "http://www.dst.gov.in/sites/default/files/DST-DFG-JointCall-10AUG2018.pdf"

Finding it difficult to have a relevant and interested group from Germany. kindly text me if anyone finds this call interesting.

Please share how I should proceed to search for interested researchers from Germany, My present approach is searching research papers on said area and mailing to the researcher if find relevant.

If I were to make a half dome as an umbrella to protect a city from rain and sun how would I proceed. Are there special materials or do you have an idea on how to make this? What do you say about an energy shield ?

Limitations of carbon dot or carbon dot based products for commercialization.

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 range from 1.5 to 4.0 (rapid publication)? I know some journals such as Journal of Material (Hindawi), Journal of Materials Science (Springer), JNN, Journal of Alloys and Compounds, Thin solid film and two lists:

However, I still can not find the suitable journal in these lists.

I used glass as a transparent cover in the solar still. But the glass handling is quite difficult, it has good absorbance and medium reflective property. But I need an alternate material which has good absorptive and very low reflective property. Is there any please suggest ?  

This is more of a question, but put under discussion as it may lead to a discussion.

Large crack lengths in the range from 0.5mm to 100mm, can DAMASK simulate these cracks for materials like steels, Haynes, etc.?

Please provide a link if possible. Expecting only a short answer for now.

I have prepared magnesium green compacts from powders of different particle sizes. I observed that the green strength of compacts produced from fine powder was very low. Green compact splitted in two parts in the vertical plane during removal of green compact from the powder compaction dies. I repeated the experiment so many times and observed the same behavior. What can be the possible reason? Please explain.

rare-earth free Fe-based metallic glass, >10 mm critical casting diameter ?

any Al-based metallic glass, >10 mm diameter?

precious-metal free Ni-based metallic glass, >10 mm diameter?

rare-earth and precious-metal free Cu-based metallic glass, >30 mm diameter?

any metallic glass that is truly ultrastable and virtually never crystallizes?

Need to do strain controlled fatigue test on ASTM E606 specimen. What I have referred from a research literature they have given strain ratio R, of 0.5 and a frequency of 0.2 Hz and strain levels of 0.7%–3.0%, 70% decline of peak load could anyone tell me how to decide this values ? From where they used the values there is no reference paper they have used in that particular research article.

Asbestos is considered the best brake friction material because of its high thermal stability, low wear rate, low cost, etc. But, due to its carcinogenic effects, asbestos has been phased out. Now, asbestos-free braking materials are being developed. Today, non-asbestos organic (NAO) brake pads are being used widely. But, NAO brake pads have low thermal stability. So, the NAO type of brake pads is not suitable for heavy-duty applications. So, which materials are ideal for heavy-duty braking applications? Metal matrix composites? Carbon-carbon composites? Ceramic composites? or any other?

What are the quantum materials? Quantum phenomenon takes place in every material at atomic level. then how to define quantum materials? is Iron (magnetic materials) quantum material as it shows magnetism which is the quantum phenomenon? if not then what are quantum materials?

Dear all,

I am working on the development of magnesium alloy AZ91 composites by powder metallurgy route. During the sintering of pure alloy samples, there is a decrease in density. Generally, density increases after sintering. What can be the possible reason for this anomalous behaviour? I have read in some papers that this can be due to foaming. Also, please tell me how I can avoid this?

Are BPDs (Basal Plane Dislocations) and Misfit dislocations different or same? If different, what's the difference between the two?

Generally, lattice constant increases if the doping atom has larger radius. But sometimes reverse phenomenon happens, that is lattice constant increases when doping atom has smaller radius. What are the probable reasons behind it?

Impact of negligent behaviour in medical practitioners to patients

Hello everyone,

I hope you are doing well in this pandemic.

Currently, I am doing PhD in powder metallurgy. I am in the stage of submission, so looking for a postdoc. But, I am a little bit confused about the selection of the topic. I have worked on metal matrix composites, polymer matrix composites, and nanoparticles synthesis during my M.Tech and PhD. I have published papers in all three areas. Can anyone suggest which topic will be better for me (in terms of future scope, novelty)? I am looking for your valuable suggestions.

Thank you

In other to achieve the environmentally, friendly, biodegradable, sustainable and machinability of difficult- to- cut metals such as Inconel 718 at minimum quantity lubrications MQL in manufacturing processes.

Metallic foams are considered emerging smart materials because of their low density, high heat dissipation, and high energy absorbing capacity. There are various techniques used for the fabrication of metallic foams. Powder metallurgy and casting are the most commonly used techniques. Which is the best technique for the fabrication of metallic foams, casting or powder metallurgy?

In powder metallurgy, energy is consumed in powder production, ball milling, powder compaction, and sintering. Whereas in casting, the energy is consumed only in melting the ingot. In some of the papers, I have read that energy consumption is lower in powder metallurgy. How? Can anyone explain, please?

With the increasing demand, the consumption of metallic materials is increasing. But the primary sources of these materials (ores) are limited. So, there is an urgent need for an efficient recycling technique to meet the increasing demand. There are mainly two techniques, powder metallurgy and casting, used for recycling metallic materials. Which is the better technique, powder metallurgy or casting?

I am working on the development of metal matrix composites by powder metallurgy technique. Currently, I am using conventional sintering. Microwave sintering and plasma sintering are advanced sintering techniques. What are the differences between traditional sintering, microwave sintering, and plasma sintering? What are their advantages and disadvantages? Which one is better for the sintering of AZ91 magnesium alloy?

I am looking for the latest approaches to find the band-gap of Phononic / Periodic materials. In this regard, if anyone knows a reference (in detail) for Finite Difference Time Domain (FDTD) theory along with the Bloch method, please share.

I really appreciate any help you can provide.

I wanted to know recent additions of ICDD (JCPDS) files of Zinc oxide. I have ICDD files which were addded before 2003. If anyone knows the recent ICDD files or atleast PDF numbers it will be most helpful to compare my data.

I want to buy MXenes any recommendations

If we evaporate Sulphur in a closed chamber along with the MoO3 films, will it convert MoO3 to MoS2?

HEA fabrication

I am a novice student doing a research project on water absorption in polymer composites with sodium silicate coating.

I want to ask about how to determine the result of the percentage of water absorption which is the sum of the percentage gain in body weight and the percentage of dissolved matter lost

for example, the conditioned weight is 9.76 grams then the wet weight at the time of immersion for 24 hours is 7.05 grams. Because there was a reduction in weight, my specimen was reconditioned with the result that the reconditioned weight was 6.83 grams.

Is it true that the percentage increase in weight was -27.77% and the percentage of dissolved matter lost was 30.02%? Then to determine the percentage of water absorption, just add (-27.77%) + (30.02%)?

Is there something wrong with my calculations?

please help in that case. thank you

I am looking for studies related to austenization soaking times and ways to reduce the time to achieve full dissolution of carbides as well as not to obtain austenite grain growth. Grain growth will take place with increasing soaking time. I am looking for any studies that discuss about ways to reduce the soaking time to obtain full carbide dissolution as well as stay in the optimum austenite grain size range. The steels cast have carbon in the hyper-eutectoid range. i.e. greater than 0.78% C, in about 0.88% C. I would highly appreciate feedback from experts.

Dear Researchers/Professors,

Could you please explain the Merits and Demerits of journal publications under the special issue?

Thank you.

What is the mechanism and method of making the steel fibers used in reinforcing concrete and what are the residues or wastes or losses caused from the manufacturing stage ?

Are there detailed industry instructions that can be obtained ?

If I have a sample that consists of 2 substances with the same chemical composition but different crystal structure (one cubic and the other orthorhombic), how can I figure out what percentage of the sample consists of the cubic crystal structure and what percentage of the sample consists of the orthorhombic structure?

Hello Researchers..

I have created the vacancy in the supercell ? i want to find charge density Contour. can i use VESTA for this ? I have little idea of using Xcrystden. Will it be necessary to use Wien2K or please guide me with any other way ? thanks in advance.

#simulations #QUANTUMESPRESSO #modulation#VESTA#BURAI #metaloxides #vacancy

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dear all

can anyone explain to me or give me a reference how they find that the expression of the Zn-O bond length in the wurtzite structure is given by [1] :

where u is the positional parameter

thanks in advance :)

[1] Wang XS, Wu ZC, Webb JF, Liu ZG (2003) Appl Phys A 77:561

This is a ferrite composition that has been prepared adopting auto-combustion method. The SEM of this sample has exhibited a peculiar grain structure. It seems, a lot of tiny grains have enclosed a large grain.

Is there a way to dope or combine the FeSe alloy onto a MXene (Ti3C2Tx) which can be used as a electrode for energy applications?

Please suggest what are different types of polymorphic transformations and best available literature decoding the same. For example, I am not clear if:

1. Different polytypes of SiC are due to reconstructive/ displacive or any other transformation?

2. Is existence of C as diamond or graphite due to order-disorder transformation?

3. Is the energetic material like CL-20 having 4-5 polymorphs due to displacive transformation?

Please discuss with examples

Hello everyone:

I am looking for a simple software program to model chemical bonds. The purpose is to generate a high-quality graphical abstract for a top leading journal in the field of chemistry. I am not interested in professional programs like Photoshop as I don't have enough time to learn. Any suggestion?

Thanks in advanced!

Dear Researchers,

Please, which sites, tools, or programs you recommend to use in the design and selection of materials topic?

Regards,

Akram

I have seen Iranians publishing their works in this journal, however they are usually doing their research outside of Iran.