Materials Science - Science topic

Dear Reasearchers,

I am working on a project in which I need to prepare 38% silver diamine fluoride for in-vitro testing related to dentistry. Since my background is dentistry, and not chemistry, could anyone please guide me regarding the best method for preparing 38% SDF?

Thank you for your suggestions in advance.

Dear ResearchGate Community,

I hope this message finds you well. I am currently at a crossroads in my academic journey and would greatly appreciate your guidance and suggestions.

To provide some background, I have already published 10 papers in reputable Scopus/SCI indexed journals within the fields of Material Science and Renewable Energy. While I have developed expertise in these areas, I am now contemplating the next step in my academic career: pursuing a PhD.

However, I find myself in a state of confusion when it comes to choosing a specific domain for my doctoral studies. I am well aware that selecting the right domain plays a crucial role in shaping one's future opportunities and career prospects.

Considering my previous research experience in Material Science and Renewable Energy, I am open to exploring related domains but would like to make an informed decision that aligns with the current trends and offers promising prospects for the future.

I kindly request your insights and suggestions on potential domains that may offer exciting research avenues and a better future outlook. If you have any recommendations based on your expertise or experiences, I would be grateful to hear them.

Thank you in advance for your time and valuable input. I truly appreciate the support of this vibrant research community.

Best regards,

Ankit

Any Suggestion. Thank you.

Biomaterial Question

Hi. I have been trying to synthesising gelatin microparticles using double emulsion method. After adding the oil-gelatin mixture in the ethanol with stirring, the particle seemed to formed but when I washed it with acetone and centrifuge, the precipitates seemed to formed big ball and when I tear it apart it seems like gelatin fiber (instead of microparticle).. Just curious does high speed centrifugation affects microparticle formation? Thanks 🙏

I have tried the following steps, but these are giving the errors

1. !pip install pymatgen

2. !pip install mp_api

2. from mp_api.client import MPRester

with MPRester("my_api_key") as mpr:

docs = mpr.summary.search(material_ids=["mp-149", "mp-13", "mp-22526"])

And got a very long error as a result.

What am I doing wrong?

The materials science dissertation did not conduct experimental studies. What is the name and how to search on the Internet for this type of dissertation, in which, for example, they simply applied some method or developed some approach, but did not directly experiment, for example, to change the structure, did not create any materials, substances and etc. among the sciences where it is usually required to do this (materials science, chemistry)? Give examples of such dissertations. Thank you!

Matminer website mentions that matminer_examples is a repository of example notebooks showing how to use matminer but when I open the link on github page (https://github.com/hackingmaterials/matminer_examples) I am unable to understand the different branches/tags. Also, I really cant find the code for examples that I was looking for. Can someone help me with that?

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

I studied the properties of W-Cu alloys using molecular dynamics simulation,well I didn't find the eam potential of W-Cu alloy, How can I get or fit the potential for my simulation work ?Thank for your answer

From where can I get the python based Machine learning codes for material science? As i am not an expert in python programming and can't write the whole code on my own. I need some framework that i can modify for my ML problems. What can be the best source/place to look for that. Kindly suggest.

I would greatly appreciate any insights, advice, or resources you can provide to help me kickstart my learning journey in this exciting interdisciplinary field. Your expertise and experiences will be invaluable in shaping my path.

Thank you for your time and support.

What are the prominent areas within materials science where machine learning has shown promising results? I am particularly interested in applications related to material property prediction, materials discovery, and structure-property relationships.

Are there any specific libraries that are well-suited for dealing with materials data?

What are the main challenges or pitfalls one should be aware of when applying machine learning in materials science? How can we overcome these challenges effectively?

What are the typical machine learning models employed in materials science research? Are there any preferred algorithms or models that tend to work well in this domain?

Hi,

I'm searching for a high positive dielectric anisotropy polymer, consisting of both rigid and flexible sections.

For clarity, this means a high dielectric constant in the direction of the polymer's backbone, the opposite of, for example, polyvinylidene difluoride (PVDF).

My best guess would be a main-chain liquid crystal polymer with high dielectric anisotropy liquid crystal monomers, or some polyphenylene vinylene block co-polymer, but I'm searching for a specific polymer and not a general group of polymers.

I have limited synthesis possibilities, so comercially available polymers, or polymers synthesised from polymerisations from readily available monomers, are preferred.

I'm thankful for all suggestions!

Hello, researchers. I hope you're all well. How can we know the type of semiconductor from the band structure (N type or P type)?

Thank you in advance.

Can I use alternative material instead of lithium chip or lithium foil as a working and reference electrode and assemble two-electrode half cells for analyzing electrochemical performance tests by not using a glove box? When ı read articles related to cell montage, generally, it is mentioned using glove boxes. Is there any alternative? while answering Could you share a reference, please?

Thank you

Synthesis of nanomaterial via hydrothermal method , yield I get after final process very small in quantity. How I increase yield using this method for my research.

please give any suggestion.

Thank you.

The Sumudu transform is a generalized version of the Laplace and Fourier transforms. It has been used in diverse fields such as signal processing, image analysis, and mathematical biology. In recent years, the Sumudu transform has been applied to study the fractal properties of different systems. The fractal dimension is a measure of the complexity and self-similarity of fractal sets. The Sumudu transform can be used to calculate the fractal dimension of different objects and systems. The basic idea is to use the scaling properties of the Sumudu transform to obtain a relation between the fractal dimension and the scaling exponent of the Sumudu transform. This relation can then be used to calculate the fractal dimension of different systems. For example, the Sumudu transform has been used to study the fractal dimension of fractional Brownian motion, which is a self-similar stochastic process that is often used as a model for natural phenomena such as turbulence. The fractal dimension of fractional Brownian motion can be obtained by analyzing the scaling properties of its Sumudu transform. In general, the Sumudu transform can be used to study the fractal properties of different systems by providing a new way to analyze their scaling properties.

Caputo fractional derivatives are a type of fractional derivative that take into account the initial conditions of a system. They are often used in modeling complex systems with anomalous diffusion, such as in fractals or porous media. In these systems, the fractal dimension plays a key role in determining the behavior of the system over time. The fractal dimension describes how the system fills space, and can be thought of as a measure of how complex and irregular the system is. When modeling these systems using Caputo fractional derivatives, the fractal dimension can be incorporated into the derivative itself, allowing for a more realistic and accurate representation of the system's behavior. This is done by replacing the usual order of differentiation with a fractional order that depends on the fractal dimension.

Fractal nonlocal derivatives in fractal dimension refer to a mathematical concept which uses fractal geometry to define a nonlocal derivative operator. This operator is used to describe the behavior of a function on a fractal set, where traditional calculus may not apply because the fractal set has a non-integer dimension. The idea behind fractal nonlocal derivatives is that the derivative of a function at a point on a fractal set is not just dependent on nearby points, but also on the global behavior of the function on the fractal set. This concept is important for understanding the behavior of complex systems that exhibit self-similarity and can be modeled using fractal geometry. The use of fractal nonlocal derivatives has applications in fields such as physics, finance, and biology, where the behavior of systems on fractal sets is of interest. It is also an active area of research in mathematics, as it allows for the development of new tools to study and understand the behavior of functions on fractal sets.

Fractal differential equations are an important tool in studying fractals. These equations are formulated in terms of fractional calculus, an extension of classical calculus that deals with non-integer powers of differentiation and integration. Fractal differential equations are used to model physical, biological, and engineering systems that exhibit fractal behavior. The term "fractal dimension" refers to the concept of measuring the complexity of a fractal object. It is a non-integer dimension, typically expressed as a real number between 1 and 2 for most fractals. Fractal differential equations can be formulated in terms of this dimension, allowing researchers to study the behavior of fractals in a more systematic way. One example of a fractal differential equation is the so-called fractal heat equation. This equation describes how heat diffuses through a fractal medium, such as a fractal network of blood vessels or airways. Another example is the fractal wave equation, which describes the propagation of waves (such as light or sound) through a fractal medium. Fractal differential equations have many applications in science and engineering. They have been used to model the behavior of porous materials, the electrical properties of fractal networks, and the dynamics of fluid flow through fractal geometries, among other things. In general, fractal differential equations provide a unique and powerful tool for understanding the complex behavior of fractal systems.

Fractional stochastic systems in fractal dimension are systems that exhibit both fractal geometry and randomness through the use of fractional calculus. Fractional calculus deals with non-integer orders of differentiation and integration, which enables modeling of phenomena that exhibit anomalous diffusion and memory effects. Fractal geometry pertains to objects that are self-similar at different scales, and characterized by a fractal dimension, which is a non-integer number between its topological and metric dimension. Examples of fractional stochastic systems in fractal dimension could include the modeling of rainfall patterns, which exhibit fractal properties due to the self-similarity of the precipitation clusters, and can also be characterized as random processes. Another example is financial market modeling, which can be approached through fractional Brownian motion, a fractional diffusion process that can capture long-term dependence and volatility clustering of stock price time series. The study of fractional stochastic systems in fractal dimension is an interdisciplinary field that combines mathematics, physics, and engineering, among others. It has diverse applications in various fields, such as signal processing, medical imaging, geophysics, and materials science, to name a few.

Fractal Picard iteration: Fractal Picard iteration is a mathematical method used to find the fixed points of a self-similar mapping or contraction mapping. It involves repeatedly applying the mapping to an initial guess while keeping track of the intermediate results. The resulting sequence of iterates usually converges to the fixed point, which is the point that maps to itself under the mapping. This method is especially useful for analyzing the behavior of fractals, which are objects that exhibit self-similarity at different scales. Fractal Picard iteration can be used to compute the attractors of fractal functions or to generate fractal patterns. The procedure involves dividing the domain into smaller subdomains that are related by contractions. Each subdomain is then mapped to a smaller subset of the domain, which is then recursively subdivided and mapped again. The process is repeated several times until a self-similar pattern emerges. Fractal Picard iteration is a powerful tool in mathematics, computer science, and physics, among other fields. It has many applications, including image compression, data analysis, and the modeling of complex systems such as turbulence and chaos.

Fractional differential equations in fractal dimension are mathematical models that describe the behavior of systems with fractal geometry using fractional calculus. In these equations, the order of the derivative is non-integer, and thus they are a powerful tool for modeling phenomena that exhibit complex, non-linear behavior. Fractal geometry is characterized by structures that exhibit self-similarity at different scales. Fractional differential equations in fractal dimension allow us to model complex systems that exhibit this self-similarity, and to study their behavior over different scales. Such equations have applications in physics, biology, finance, and engineering. They are used, for example, in modeling the behavior of porous materials, in predicting the spread of infectious diseases, in predicting the behavior of financial markets, and in modeling the conduction of heat in materials.

Advise, please, all that you know of scientific works (articles, dissertations) about materials printed on a 3D printer for stomatology. Of particular interest are articles where their composition is studied and such materials are compared with other materials. Thank you!

Advise, please, all that you know of scientific works (articles, dissertations) about materials printed on a 3D printer for stomatology. Of particular interest are articles where their composition is studied and such materials are compared with other materials. Thank you!

More than 360 million tons of plastic waste is being generated every year, and only 9% of this is being recycled. Who is building solutions around this mammoth issue. What's being researched and what technological solutions are ready to be implemented on mass scale.

Please share your thought and useful links.

Thanks

Aman Arora

How many of the citation has in the paper of Progress in Materials Science 52(2007) 1091-1173?

Recommend dissertations that describe material selection techniques using life cycle assessment, target product quality profile, quality by design.

Can someone provide or give me an example how the VASP WAVEDER file looks like?

This year in July, I will finish my master degree in majoring of Physics of renewable enrgy sources and sustainable environment. I published 20 articles in Scopus indexed journals with quality of Q1 and Q2 quartile in simulation of solar cells field as first and corresponding author. I want to continue my study in abroad. I am seeking good PhD postions from European countries. I attached my CV to this discussion. If you have PhD position in your instuition or laboratory or you know good PhD position, please inform me. I am trying to find PhD from official websites of instutions and laboratory as well as databases.

Specifically interested in purine derivative as a cation of ionic liquid.

Any relevant reading suggestions are highly appreciated. Thanks.

I intend to perform mechanical tensile test for my polymer nanocomposites. Does there exists any ASTM standard to follow? Can I also know the dimensions of the specimen to be produced? Lastly, I intend to create a mould for the dog-bone shape. Can we get files online to create the dog-bone mould using 3D printer?

ODF and Pole figure of Al 7075 after CGP process?ODF and Pole figure of Al 7075 after CGP process???

Currently reading a paper about silicone rubber/filler material composite. The paper says the PHR of the prepared composite is 5. Later, the paper explains that composite having the PHR value of 5 is also having the value of 5wt% filler material. Is it possible for PHR and wt% to have a same numerical value in a single composite like this?

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

How and on what sites is it right to search for scientific information? For example, I want to find information about the mechanical properties of a particular material. I want it to look like a table and there must be information about the modulus of elasticity.

How and where to find it? What life hacks do you know about finding scientific information?

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 am trying to order a doped sputtering target of Indium Antimonide (InSb) and would like to dope it with Tellurium (Te). The desired carrier number density is about 5x10¹⁸/cm³. How to convert this to wt%? As I need to specify how much wt% of Te I need to add in InSb.

I admitted as an undergraduate to multiple universities in Arizona and Colorado! I have been actively looking for admission to the university to continuously prepare me as an investigator/innovation scientist in mineral exploration by building my foundational knowledge in metallurgy, chemistry, control systems engineering, geochemistry, geophysics, etc. These might be included in my coursework. My focus may be on "control system engineering" compared to "geoscience," as I want to spend my effort investigating sensor innovation using metallurgy, geophysics, chemistry, etc. for mineral exploration. Precisely, investigative research will be on creating "detection technology for purposing of Mining exploration and extraction" So, I'm confused with two queries: 1. Which university would be the best option based on my research interests? 2. Which major and region for internship/ real time research job corresponds to what I'm actually looking for?

Hope you already understand I’ve applied many universities with getting rejection that didn’t also find exact research team yet I’m looking. Thank you so much.

We are going to prepare jute fibre reinforced composite .....can any one suggest simple techniques?

Hello dear researchers

I am beginner in Abinit software, I made a simulation of piezoelectric properties and I got its two errors. Please if you have any idea how I can solve them please.

-----------------------------------------------------------------------------

ddb_piezo : WARNING -

Acoustic sum rule violation met : the eigenvalues of accoustic mode

are too large at Gamma point

Increase cutoff energy or k-points sampling.

The three eigenvalues are: 2.589265E-05 2.380597E-05 2.589265E-05

ddb_piezo : WARNING -

Unstable eigenvalue detected in force constant matrix at Gamma point

The system under calculation is physically unstable.

-----------------------------------------------------------------------------

I have synthesized QDs without ligands and studied their properties, but at some temperature it is not thermally stable. I want to make it stable.

Hello dear researchers

I am confused, I calculated by DFT the dielectric tensor as a function of frequency for BaTiO3 and found a value of the dielectric constant which is 6.5, while in the experimental studies they studied this constant as a function of temperature and they found values in the order of 6000.

My question is: is there a difference between the theoretical and experimental dielectric constant? Is it normal to find such values or have I made mistakes in the DFT calculation ???

Can anyone recommend materials science journals which support option to publish papers with embedded 3D interactive plots, please?

Thank you in advance!

If an organic molecular emitter shows multiple photoluminescence bands, what tools and techniques can one use to confirm the triplet-triplet annihilation (TTA) band?

Hello dear researchers.

I would like to know how to determine the number of bands of a compound ????

Thanks in advance.

Data augmentation techniques drastically improved AI models while dealing with images and text, however, it is not so obvious how to translate these approaches to chemistry and materials science. What methods do you know and how legal do you think they are?

I'm getting repetitively negative open circuit potentials(OCP) vs. Ag/AgCl reference electrode for some electrodes during the OCP vs. time measurements using an electrochemical workstation. What's the interpretation of a negative open circuit potential? Moreover, I also have noticed that it got more negative on illumination. What's the reason behind it? Are there some references? Please help.

Dear colleagues,

I just receive an email from info@vebleo.org as follows. Is it reliable? Anyone gets the same email?

......

I am delighted to inform you that your name has been nominated for Fellow of Vebleo by the committee members for your notable contribution in the field of materials science research including graphene & 2D materials, biomaterials & devices, functional, composite, polymer, energy- and nano science, and technology. ........

I synthesized a molecule. I want to know what are the self-assembled structures possible for it through hydrogen bonding.

If possible, please suggest me some free software available (installation-based or online)

Any relevant suggestions are highly appreciated. Thanks.

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.

I am quite confused. I know that parallel planes do have the same Miller indices. However, as you can see from the attached XRD pattern, there is (003) family of planes having different Miller indices. Why so? What actually happening here

Are there any problems in Dental Science especially in the field of Dental Composites and Nanocomposites or Dental materials in general that a Mechanical Engineer or Material Science researcher can solve or research upon ?

I have substituted cerium metal ions (Ce3+) inside HA crystal lattice. How can I measure change in lattice parameters of HA unit cells after cerium ion substitution? Normally, we use . 1/d2 = (4/3){(h2 + hk + k2)/a2} + (l2/c2) equation to calculate a and c lattice parameters. In this equation, (hkl) and d values are required to calculate a and c values. There are several signature peaks of HA like (002), (210), (211), (112), (300), (202), (310), (222), (213) and (004). Each peak has different hkl and d values. 

How can I calculate d value precisely for specific peak?

Should I calculate a and c values for all signatured peaks of HA.

It would be nice, if you guide me about it.

Thanks 

rietveld refinement

I would like to know if "IOP Conference Series: Materials Science and Engineering" is indexed in Scopus database or not ?

Dear all

Hope you are doing well!

What are the best books in Materials Science and Engineering (Basics and Advanced)? Moreover, what are the best skills (or materials topic related) that materials scientists have to develop and to acquire?

Thanks in advance

^_^

Dear Researchers :

I have this question and I have an hypothesis:

Why Natural HDPE, when extruded at temperatures about 100 °C (around) it has a white (but pale white), and then when the polymer cools down it color turns between white an yellow.

I understand that this phenomenon it is a general case of all LLDPE, LDPE and HDPE , and in all fabrication processes : Extrusion, injection, molding, pressing, etc.

So this is fundamentally, a chemical characteristic of the material ...

It has to do with a change in the Oxygen concentration in the material ?

Thank you all in advance,

Best Regards !

I have done the milling process for an Alumina sample using zirconia ball. However from EDX and XRD analysis it is showing very high contamination of Zirconia element. Does anyone have suggestions on how to remove/separate zirconia element from the milled sample?

in materials science this word has a negative meaning, "the inclusion of sulfur in steel". but how to describe a composite, an alloy, where is the "inclusion" of intermetallic in the matrix? Where "inclusions" are positive meaning.

Maybe, "particles"??

I have tried using many etchants but didn't succeed.

After CNT, 2D material, perovskites and Metal-organic framework and their applications, what is going to be the next big trend in the field of material science research?

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 ?

Hi all,

I am doing a comparative study on the design of mats used in the microwave ovens and other general thermal applications. This involves the iterations in the design and the materials grades.

I have selected few designs from the available sources. The design involves the pattern of the ribs that helps in heat dissipation.

I am struggling to get the material properties for the food grade silicone or BPA free silicone. The properties helps us to conduct the thermal analysis for the mat.

It will be highly helpful if you can help me in getting the properties of the food grade silicone or BPA free silicone.

Thanks,

Prabhu

How can I figure out amorphous region, crystalline region and total intensity?

I discovered two distinct phenomena when cracks begin to form at α and β phases in titanium alloys. How does this difference mechanism come about?

I am new to the photoluminescence field and I'd like to know how to use NaI powder in room conditions for glass fabrication. Is it affected by room temperature or moisture in the atmosphere? How can I weigh the powder? Is it okay if I use a metal lab scoop? Is it possible to weigh the powder without using a glovebox? I would appreciate it if someone could guide me with these questions.

I have a small topic on material research to fulfill at my university. I am very new to material science. Good Sources to research for material knowledge and suggestions for my above question is very much appreciated. Thank you in advance !!!

I have a V2O3 nano powder and want to have VO2, so I want to know how to do it!!!

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 !

Hello all,

I am trying to add silica to the sides of gold nanobipyramids (AuBP) such that only the tips are exposed. I have been following two papers to perform this reaction scheme - (1) "Selective Pd Deposition on Au Nanobipyramids and Pd Site-Dependent Plasmonic Photocatalytic Activity," by Zhu et al and (2) "Oxidation State of Capping Agent Affects Spatial Reactivity on Gold Nanorods," by Hinman et al.

(1) In this paper the group achieved exactly what I am seeking to accomplish (see attached Figure 1). I tried following their procedure (attached Figure 2), but I only get silica nanoparticles/aggregates. Which leads me to

(2) In this paper, the group explains that the oxidation state of PEG-thiol is crucial to the silica forming on the sides of the AuBP (attached Figure 3). Thus I have been using the PEG-disulfide for the reaction as opposed to the PEG-thiol. However, I have not been successful.

One thing that I have considered as a key factor in the pegylation of the AuBP is concentration of the nanoparticles. In paper (1), they do not report the concentration of the AuBP, as this is a difficult number to determine. In paper (2), the group reports the concentration of gold nanorods. However, the surface area of the ends of the gold nanorods is much larger than the surface area of the tips of the AuBP. I tried to roughly calculate the surface area of the tips of the AuBP that I use and then use a comparative concentration of AuBP as compare to the gold nanorods.

Any advice is appreciated! Thank you for your time!

I have seen a lot of research on the electrodeposition of graphene through the aqueous medium ( by reducing graphene oxide (GO), graphene with functional groups, graphene quantum dots (GQD) in aqua). I have tried to replicate them experimentally. None of them seem to work - no deposition of graphene( black appearance on gold) nor increase in electrochemical activity (CV in ferrocyanide). I have tried with potentiostat and galvanostat at different potentials and current densities. The solution mainly used in these for GO is of pH 7-9 usually PBS or some salt. For GQDs it's pH 7 aqueous solution. I have added a couple of citations below for your reference. Please let me know if it really works or I am missing something.

Hilder, M., Winther-Jensen, B., Li, D., Forsyth, M. & Macfarlane, D. R. (2011). Direct electro-deposition of graphene from aqueous suspensions. Physical chemistry chemical physics, 13 (20), s. 9187. doi:10.1039/c1cp20173e.

Shadjou, N., Hasanzadeh, M., Marandi, M. & Hasanzadeh, A. (2016). Graphene quantum dot functionalized by chitosan as an electrically conductive nano-material toward low potential detection: a new platform for interface science. Journal of materials science: materials in electronics, 27 (11), s. 11834–11843. doi:10.1007/s10854-016-5324-5.

I need S-N curve of N-HA for fatigue analysis.

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 )

Generally observed at low strain rate for fine grained material.

For industrial scale

which are viable materials?

which parameters need to alter?

Kindly express your views.