Nanomaterials Science & Engineering https://proa.ua.pt/index.php/nmse <p>Journal of Nanomaterials Science &amp; Engineering is a peer-reviewed journal communicating scientific and technological advances in the fields of the new materials and technology on nanoscale. The journal provides scientists and the technology business community with the latest developments in Nanomaterials Science.</p> UA Editora en-US Nanomaterials Science & Engineering 2184-7002 <p style="margin: 0cm; margin-bottom: .0001pt;"><strong>&nbsp;Copyright Information </strong></p> <p style="margin: 0cm; margin-bottom: .0001pt;">&nbsp;</p> <p style="margin: 0cm; margin-bottom: .0001pt;">&nbsp;Authors who publish in the Nanomaterials Science &amp; Engineering agree to the following terms:</p> <p style="margin: 0cm; margin-bottom: .0001pt;">&nbsp;- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</p> <p style="margin: 0cm; margin-bottom: .0001pt;">- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</p> <p style="margin: 0cm; margin-bottom: .0001pt;">&nbsp;- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after publication, as it can lead to productive exchanges, as well as earlier and greater citation of published work.</p> <p style="margin: 0cm; margin-bottom: .0001pt;">Copyrights to illustrations published in the journal remain with their current copyright holders.</p> <p style="margin: 0cm; margin-bottom: .0001pt;">It is the author's responsibility to obtain permission to quote from copyright sources.</p> <p style="margin: 0cm; margin-bottom: .0001pt;">Any fees required to obtain illustrations or to secure copyright permissions are the responsibility of authors.</p> <p style="margin: 0cm; margin-bottom: .0001pt;">&nbsp;</p> <p style="margin: 0cm; margin-bottom: .0001pt;">&nbsp;</p> An Innovative Approach to Wound Dressings: Citric Acid Cross-linked Carboxymethylcellulose-Poly(vinyl alcohol) Hydrogels with Variable Pore Sizes https://proa.ua.pt/index.php/nmse/article/view/37480 <p>Polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC) hydrogels were fabricated with varying concentrations of CMC. The hydrogels underwent cross-linking using non-toxic and biocompatible citric acid (CA) in combination with the freeze-thaw technique. FTIR analysis confirmed the hydrogels' chemical structures, while SEM characterization determined their pore diameters and porosity ratios. Hydrogels with diverse porosities exhibited suitable pore diameters for skin cells. Moreover, the hydrogels demonstrated a high swelling capacity, and the augmentation of CMC content resulted in increased water retention capacity. Their water vapor transmission, combined with their swelling properties, highlights their potential as suitable materials for use in wound dressings. These biopolymer-based hydrogels show promise for various applications, including wound dressings and biomimetic artificial skin, effectively replicating the properties of the epidermis and dermis.</p> Yağmur Camcı Serbülent Türk Mahmut Özacar ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 2025-01-16 2025-01-16 7 1 5 13 10.34624/nmse.v7i1.37480 Investigation of Damping in Porous Metal Foams https://proa.ua.pt/index.php/nmse/article/view/37198 <p>Damping in materials and structure is known by the dissipation of energy over time under eventual action of an excitation called force. It is crucial characteristics in various engineering applications including civil engineering, mechanical engineering and aerospace engineering. It contributes to the safety, performances and longevity of these structures as well as the designed damping systems can improve the comfort and reliability of a wide range of engineering applications from everyday vehicles and machine to large scale engineering projects. The aim of this paper is to investigate damping mechanism in porous metal foams, the influence of different parameter such as porosity and microstructure on the damping phenomena and some practical implications. This research unlocks full potential of metal foams for vibration control and energy dissipation, advancing engineering solutions for a wide range of industries.</p> Bilal FETTAH Hamou ZAHLOUL ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 2025-01-17 2025-01-17 7 1 14 19 10.34624/nmse.v7i1.37198 The influence of T-Shape flow deflector placement on convection heat transfer over an array heated blocks https://proa.ua.pt/index.php/nmse/article/view/37201 <p>In this research, a numerical study was conducted to examine the convective heat transfer in a horizontal channel containing multiple heated blocks. The channel design incorporates T-shaped flow deflectors strategically positioned downstream of each block. Air, with a Prandtl number of 0.71 and consistent thermal properties, is used for cooling. The geometric attributes and arrangement of the flow deflectors remain consistent throughout the analysis. The computations are based on a Reynolds number of 400, with systematic variations in the positions of the flow deflectors. The finite volume method, implemented using Ansys Fluent© software, is employed to solve the governing mathematical equations numerically. The results emphasize the significant impact of adjustments to the flow deflector configuration on both fluid flow patterns and heat transfer characteristics across the heated blocks.</p> AMIRAT Hamza KORICHI Abdelkader AMIRAT Moustapha ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 2025-01-17 2025-01-17 7 1 20 25 10.34624/nmse.v7i1.37201 Nanomaterials Science & Engineering (NMS&E), Vol.7, No.1, 2025 https://proa.ua.pt/index.php/nmse/article/view/38948 Igor Bdikin Paula Marques Duncan Paul Fagg Gil Gonçalves ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 2025-01-21 2025-01-21 7 1 1 27 10.34624/nmse.v7i1.38948