OAJ Materials and Devices http://caip.co-ac.com/index.php/materialsanddevices <p>Materials and Devices is an Open Access journal managed by academics, which publishes original, and peer-reviewed papers accessible only via internet, freely for all. Your published article can be freely downloaded, and self archiving of your paper is allowed and encouraged!</p> <p>The topics covered by the journal are wide, Materials and Devices aims at publishing papers on all aspects of studies on materials, and related devices. This includes solid state physics and chemistry, chemical physics, materials science, microelectronics, photonics,... and all types of materials.</p> <p>Papers on biomaterials, geomaterials, archeomaterials or on studies of ancient materials are also welcome. A particular attention is also paid on environmental studies related with materials and on materials relevant to environment preservation.</p> <p>Authors are also encouraged to submit papers on theoretical studies applied to materials, including pure mathematical approaches, physical approaches, models, numerical simulations, etc.</p> <p>We apply « the principles of transparency and best practice in scholarly publishing» as defined by the Committee on Publication Ethics (COPE).<br /><br />Materials and Devices is now indexed by the DOAJ and published articles receive a DOI. </p> <p>Articles are published under the responsability of authors, in particular concerning the respect of copyrights; we ask authors to consider this point very seriously because any figure (or table) already published (even by the author himself) in another journal is generally submitted to copyrights. In that case authors should ask for permission to reproduce the figure in his article.</p> <p>Another very important point is plagiarism. Authors should be careful not to plagiarize other works; we check articles for plagiarism, and authors who would submit a plagiarized article (or partially plagiarized) will be bannished from the journal.</p> <p>Readers are aware that the contents of published articles may involve hazardous experiments if reproduced; the reproduction of experimental procedures described in articles is under the responsability of readers and their own analysis of potential danger.</p> <p><strong>Downloads: <a href="http://co-ac.com/wp-content/uploads/2019/05/Flier-MatDev2019.pdf">Flier of the journal </a> Article templates:</strong> there is a special template for review articles, other types of articles may be edited with the general template. See the last issue of the journal to get the updated templates, containing also instructions for authors.</p> en-US <p><strong>Authors who publish with this journal agree to the following terms:</strong><br /><br /></p> <ol type="a"> <ol type="a"> <li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License ( <a href="http://creativecommons.org/licenses/by-nc-nd/4.0/" rel="license">Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licens</a>e) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li> <li>To the extent transferable, copyright in and to the undersigned article is hereby assigned to Collaborating Academics and Open Access Journal Materials and Devices (ISSN: 2495-3911) for publication in the website of the journal and as part of a book (eventually a special volume) that could be produced in a printed and/or an electronic form.</li> <li>Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a style="background-color: #ffffff;" href="http://opcit.eprints.org/oacitation-biblio.html" target="_new">The Effect of Open Access</a>).</li> <li>Figures, tables, and other information present in articles published in the OAJ Materials and Devices may be reused without permission, provided the citation of original article is made in figure's or table's caption.</li> </ol> </ol> editor.materialsanddevices@gmail.com (Pierre Saint-Gregoire) contact@co-ac.com (Technical support) Thu, 24 Feb 2022 20:13:47 +0000 OJS http://blogs.law.harvard.edu/tech/rss 60 Microstructure of zirconium carbide ceramics synthesized by spark plasma sintering http://caip.co-ac.com/index.php/materialsanddevices/article/view/146 <p>Zirconium carbide (ZrC) samples were prepared by spark plasma sintering (SPS), at temperatures of 1700 °C, 1900 °C and 2100 °C, all at pressure of 50 megapascal (MPa). The density of ZrC ceramic pellets was measured using a Micromeritics AccuPyc II 1340 Helium Pycnometer. The density of ZrC ceramic pellets was found to increase from (6.51 ± 0.032) g/cm<sup>3</sup> to (6.66 ± 0.039) g/cm<sup>3 </sup>and (6.70 ± 0.017) g/cm<sup>3 </sup>when the temperature of the SPS was increased from 1700 <sup>o</sup>C to 1900 <sup>o</sup>C and 2100 <sup>o</sup>C respectively. Moreover, the hardness of ZrC ceramic pellets were measured using Rockwell hardness test. The hardness of ZrC ceramic pellets increased from (7.4 ± 0.83) to (17.0 ± 0.073) and (18.4± 0.05) gigapascals (GPa) at temperatures of 1700 <sup>o</sup>C, 1900 <sup>o</sup>C and 2100 <sup>o</sup>C respectively. X-ray diffraction shows the absence of spurious phases or impurity. XRD results showed that, all prepared ZrC samples has the same preferred orientation of the planes (i.e., 200). Furthermore, the average grain size of ZrC was calculated using Sherrers’s equation. The average grain size of the pure ZrC powder increased from 67.46 nm to 72 nm, 79 nm and 83 nm when the ZrC powder was sinteried at temperatures of 1700 <sup>o</sup>C, 1900 <sup>o</sup>C and 2100 <sup>o</sup>C respectively. The differences in the average grain size between the prepared samples leads to show different surface morphologies that monitored by scanning electron microscopy (SEM).</p> B.A.B. Alawad, H.A.A. Abdelbagi, Tshepo Ntsoane, Thulani Hlatshwayo Copyright (c) 2022 B.A.B. Alawad, H.A.A. Abdelbagi, Tshepo Ntsoane, Thulani Hlatshwayo https://creativecommons.org/licenses/by-nc-nd/4.0 http://caip.co-ac.com/index.php/materialsanddevices/article/view/146 Mon, 23 May 2022 00:00:00 +0000 2022 - Updated template http://caip.co-ac.com/index.php/materialsanddevices/article/view/141 <p>This is the updated template to be used to submit the final version of your article submitted to the OAJ Materials and Devices.</p> <p>"Review" and "Methods" articles are based on different templates.</p> <p>When submitting, please fill all details asked in the different steps, it is in particular necessary to enter all authors, and article metadata (list of references, disciplines, fields, keywords, etc).</p> <p>Submissions with incomplete data will be rejected.</p> Pierre Saint Gregoire Copyright (c) 2022 Pierre Saint Gregoire https://creativecommons.org/licenses/by-nc-nd/4.0 http://caip.co-ac.com/index.php/materialsanddevices/article/view/141 Fri, 08 Apr 2022 00:00:00 +0000 Development of a home-made experimental set-up for in situ coupling under vacuum of conductivity measurements, x-ray absorption and Raman Spectroscopies on bundles of single-walled carbon nanotubes intercalated with alkali metals http://caip.co-ac.com/index.php/materialsanddevices/article/view/144 <p>Here, we report the development of a homemade experimental setup to perform under vacuum an <em>in situ</em> study of the physical properties of bundles of single-walled carbon nanotubes intercalated with rubidium ions using electrical conductivity, X-ray absorption and Raman measurements. &nbsp;This set-up was successfully used at the SAMBA beamline at the Soleil synchrotron. The electrical resistance displays an important drop with the stoichiometry (intercalation time). The Raman radial breathing modes and the G-band of the nanotubes clearly indicate an important electron transfer. The G-band behaviour features a transition from semiconducting to metallic nanotubes, confirmed by the electrical resistance measurements as a function of the temperature after rubidium intercalation. This set-up can be used for the study of any type of extremely air sensitive materials.</p> Laurent Alvarez, Yann Almadori, Eric Alibert, Jérôme Barbat, Rémi Jélinek, Guillaume Prévot, Raymond Aznar, Ahmed Zahab, Valérie Briois, Jean-Louis Bantignies Copyright (c) 2022 Laurent Alvarez, Yann Almadori, Eric Alibert, Jérôme Barbat, Rémi Jélinek, Guillaume Prévot, Raymond Aznar, Ahmed Zahab, Valérie Briois, Jean-Louis Bantignies https://creativecommons.org/licenses/by-nc-nd/4.0 http://caip.co-ac.com/index.php/materialsanddevices/article/view/144 Fri, 17 Jun 2022 00:00:00 +0000 Spectrophysics of Coumarin-Based Chromophore http://caip.co-ac.com/index.php/materialsanddevices/article/view/142 <p>In this work, we comprehensively explore the spectral and photophysical properties of a coumarin-based dye (<strong>1</strong>) in neat solvents. The modulation of stokes shifts, emission quantum yields (?<sub>F</sub>) and excited-state lifetimes of <strong>1</strong> by local environment (polarity, polarizability, viscosity and hydrogen bonding) signifies the formation of intramolecular charge state (ICT) from the amino group to the coumarin moiety. Collectively, in the more viscous polar solvents the rotation of the amino group is restricted, exponentially decreasing the non-radiative rate constants (<em>k<sub>n</sub></em><sub>r</sub>).</p> Faisal Rasool; Amir Sohail Copyright (c) 2022 Faisal Rasool; Amir Sohail https://creativecommons.org/licenses/by-nc-nd/4.0 http://caip.co-ac.com/index.php/materialsanddevices/article/view/142 Sat, 09 Apr 2022 00:00:00 +0000 Mini review Applications of FRET-based supramolecular architectures for temperature sensing and Cancer diagnosis: A mini-review http://caip.co-ac.com/index.php/materialsanddevices/article/view/127 <p>Supramolecular nanostructured materials, displaying Förster resonance energy transfers (FRET) signals, have become the focus of interest for many researchers across the globe. FRET based supramolecular systems have extended applications in areas as diverse as materials science, biochemistry, analytical chemistry, and nanomedicine. The non-covalent phenomena operating in supramolecular frameworks depends on many factors such as wide range of time scales, binding strengths, distances, and concentrations of the supramolecular components (host and guest). Here in, we focus in which FRET has been used to study non-covalent interactions having a key role of cancer diagnosis and temperature sensing in supramolecular systems. Furthermore, we have discussed FRET-based architectures with current advancement in the field and provide a perspective on new advancement for the future.</p> Amir Sohail Copyright (c) 2022 Amir Sohail https://creativecommons.org/licenses/by-nc-nd/4.0 http://caip.co-ac.com/index.php/materialsanddevices/article/view/127 Thu, 24 Feb 2022 00:00:00 +0000