scholarly journals Call for papers on special issue “Current trends in biopolymer-based materials”

2020 ◽  
Vol 2 (1) ◽  
pp. 046-046
Keyword(s):  
Materials Science ◽  
Low Cost ◽  
Edible Films ◽  
Synthetic Polymers ◽  
Special Issue ◽  
Materials Engineering ◽  
Current Trends ◽  
Characterization Of Materials ◽  
Processing Techniques

Aim & Scope: The importance of materials has been, is and will be very important for life. Recently, the technology of materials is being focused on polymers and composite materials, since with them it is possible to obtain a material with optimal properties for the required application. Specifically, the convergence of materials science with materials engineering leads to the combination of the production and characterization of materials for different specific applications. Nowadays, polymer-based materials have been proposed for different applications like foods (formation and stabilization of foods, supply dietary fibers or micro- and nanoencapsulation), packaging (structural and mechanical properties or edible films), cosmetic and pharmaceutical industry (low cost, sustainability and naturalness, even in regenerative medicine as biomaterials. Aiming to explore these concepts, this Special Issue will focus on the current trends for polymer-based materials and their possible applications, as well as the study of traditional and emerging processing techniques. In addition, different characterization techniques will be evaluated and described. Submissions can cover the following topics (but are not limited to them):– Natural-based polymers; – Polysaccharides and proteins in materials science; – Synthetic polymers in materials science; – Processing of biopolymers; – Nanomaterials. We kindly invite you to submit a manuscript(s) for this Special Issue. Full papers, communications, and reviews are all welcome.

Applications of ultramicrotomy for materials characterization

1993 ◽  
Vol 51 ◽  
pp. 232-233
Author(s):  
R.T. Blackham ◽  
J.J. Haugh ◽  
C.W. Hughes ◽  
M.G. Burke
Keyword(s):  
Materials Science ◽  
Microstructural Analysis ◽  
Analytical Electron Microscopy ◽  
Austenitic Stainless Steels ◽  
Specimen Preparation ◽  
Preparation Technique ◽  
Thermally Induced ◽  
Radiation Induced ◽  
Characterization Of Materials

Essential to the characterization of materials using analytical electron microscopy (AEM) techniques is the specimen itself. Without suitable samples, detailed microstructural analysis is not possible. Ultramicrotomy, or diamond knife sectioning, is a well-known mechanical specimen preparation technique which has been gaining attention in the materials science area. Malis and co-workers and Glanvill have demonstrated the usefulness and applicability of this technique to the study of a wide variety of materials including Al alloys, composites, and semiconductors. Ultramicrotomed specimens have uniform thickness with relatively large electron-transparent areas which are suitable for AEM anaysis.Interface Analysis in Type 316 Austenitic Stainless Steel: STEM-EDS microanalysis of grain boundaries in austenitic stainless steels provides important information concerning the development of Cr-depleted zones which accompany M23C6 precipitation, and documentation of radiation induced segregation (RIS). Conventional methods of TEM sample preparation are suitable for the evaluation of thermally induced segregation, but neutron irradiated samples present a variety of problems in both the preparation and in the AEM analysis, in addition to the handling hazard.

scholarly journals Applied Sciences Special Issue: Ultrasonic Guided Waves

2019 ◽  
Vol 9 (18) ◽  
pp. 3869 ◽  
Author(s):  
Clifford J. Lissenden
Keyword(s):  
Applied Sciences ◽  
Scientific Inquiry ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Special Issue ◽  
Practical Applications ◽  
Material State ◽  
Characterization Of Materials ◽  
Nondestructive Characterization

The propagation of ultrasonic guided waves in solids is an important area of scientific inquiry due primarily to their practical applications for the nondestructive characterization of materials, such as nondestructive inspection, quality assurance testing, structural health monitoring, and for achieving material state awareness [...]

Mechanical characterization of materials for bulk forming using a drop weight testing machine

2010 ◽  
Vol 224 (9) ◽  
pp. 1795-1804 ◽  
Author(s):  
C M A Silva ◽  
P A R Rosa ◽  
P A F Martins
Keyword(s):  
Flow Stress ◽  
Mechanical Characterization ◽  
Low Cost ◽  
Testing Machine ◽  
Operating Conditions ◽  
Proportional Loading ◽  
Bulk Forming ◽  
Drop Weight ◽  
Characterization Of Materials

The main limitation of mechanical testing equipments is nowadays centred in the characterization of materials at medium loading rates. This is particularly important in bulk forming because strain rate can easily reach values within the aforesaid range. The aim of this article is twofold: (a) to present the development of a low-cost, flexible drop weight testing equipment that can easily and effectively replicate the kinematic behaviour of presses and hammers and (b) to provide a new level of understanding about the mechanical characterization of materials for bulk forming at medium rates of loading. Special emphasis is placed on the adequacy of test operating conditions to the functional characteristics of the presses and hammers where bulk forming takes place and to its influence on the flow stress. This is needed because non-proportional loading paths during bulk forming are found to have significant influence on material response in terms of flow stress. The quality of the flow curves that were experimentally determined is evaluated through its implementation in a finite-element computer program and assessment is performed by means of axisymmetric upset compression with friction. Results show that mechanical characterization of materials under test operating conditions that are similar to real bulk forming conditions is capable of meeting the increasing demand of accurate and reliable flow stress data for the benefit of those who apply numerical modelling of process design in daily practice.

Physical Physics – Learning and Assessing Light Concepts in a novel way

MRS Advances ◽  
2017 ◽  
Vol 2 (63) ◽  
pp. 3933-3938 ◽  
Author(s):  
Yvonne Kavanagh ◽  
Damien Raftery
Keyword(s):  
Undergraduate Students ◽  
Formal Education ◽  
Materials Science ◽  
First Year ◽  
Traditional Lecture ◽  
Use Of Technology ◽  
Education Environment ◽  
Materials Science And Engineering ◽  
Characterization Of Materials

ABSTRACTPhysics forms a core subject on any Materials Science and Engineering programme. In order to engage first year undergraduate students in the formal education environment, motivating the students is fundamental to ensuring their success. This qualitative study focuses on the use of technology to assess a student’s comprehension of fundamental light phenomena. A knowledge of light phenomena is essential in Materials Science, for the characterization of materials, where electromagnetic (EM) radiation is used as an analytical tool. Using visible light, students can easily see what is happening and when they have to capture digital evidence of the phenomena they focus on the event.Physical Physics a structured guided approach which initially leads the students through the theory and problem solving. It provides the knowledge scaffold the students require to allow them to use their individual creativity to express their understanding. In this case, understanding is captured and assessed by the production of a portfolio of original photographs of Light phenomena taken by the student.In addition to a traditional lecture exposition, Physical Physics takes an active learning approach with authentic assessment designed for deep learning. Students learn about relevant light phenomena in the familiar landscape of their world. The assessment provides opportunities for choice, creativity and reflection. It fosters students’ interest to encourage intrinsic motivation and engagement.This approach has been successfully piloted with first year undergraduate students. Samples of the students’ work is shown. The students interviewed reveal how this approach enhanced their understanding of these Light concepts and changed their perceptions of studying Physics in general.

scholarly journals The emerging interface of mass spectrometry with materials

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Papri Chakraborty ◽  
Thalappil Pradeep
Keyword(s):  
Mass Spectrometry ◽  
Photoelectron Spectroscopy ◽  
Noble Metals ◽  
Vacuum Ultraviolet ◽  
Materials Science ◽  
Modern Science ◽  
Structural Details ◽  
Recent Developments ◽  
Characterization Of Materials

Abstract Mass spectrometry (MS), a hundred-year-old subject, has been a technique of profound importance to molecular science. Its impact in solid-state materials science has not been evident, although many materials of modern science, such as fullerenes, have their origins in MS. Of late, mass spectrometric interface with materials is increasingly strengthened with advances in atomically precise clusters of noble metals. Advances in instrumentation along with recent developments in synthetic approaches have expanded the chemistry of clusters, and new insights into matter at the nanoscale are emerging. High-resolution MS coupled with soft ionization techniques enable efficient characterization of atomically precise clusters. Apart from that, techniques such as ion mobility, tandem MS, etc. reveal structural details of these systems. Growth, nucleation, and reactivity of clusters are also probed by MS. Some of the recent advancements in this field include the development of new hyphenated techniques. Finer structural details may be obtained by coupling MS with spectroscopic tools, such as photoelectron spectroscopy, vacuum ultraviolet spectroscopy, etc. With such advancements in instrumentation, MS can evolve into a universal tool for the characterization of materials. The present review captures highlights of this area.

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