by Kuok Ho Daniel Tang

Received: 28 February 2025;  Published: 28 July 2025;  doi: 10.21926/rpm.2503011

Plastic pollution has received worldwide attention due to its extensive environmental and health implications. The circular economy has emerged as a potential solution to plastic pollution. This overview comprehensively presents different plastic circular economy approaches and discusses their advantages, disadvantages, and implementation challenges. It highlights that the current plastic circular economy approaches primarily comprise mechanical recycling, chemical recycling, bio-based and biodegradable plastics, e [...]

by Gabriel de Souza Vieira Bié  , Zilda de Castro Silveira  , Rafael Vidal Aroca  and Marcia Cristina Branciforti

Received: 07 February 2025;  Published: 28 May 2025;  doi: 10.21926/rpm.2502010

Tissue engineering is a technique for regenerating living tissue using portions of the patient's tissue, which are dissociated into cells and cultured on biological or synthetic supports before being transferred to the patient. In this context, the present study seeks to develop implant models (scaffolds) for replacing trabecular bone tissue, with requirements such as porosity and interconnected pores. All design development was aimed at the manufacturing of scaffolds using the material extrusion additive manufactu [...]

by Obumneme Emmanuel Ezeani  , Christopher Igwe Idumah  , Ifeanyi Emmanuel Okoye  and Chioma Joan Ikebudu

Received: 13 January 2025;  Published: 27 May 2025;  doi: 10.21926/rpm.2502009

Nanotechnology has revolutionized the textile industry by introducing innovative finishing techniques that enhance the durability and performance of textile materials and the application of nanoscale/nanoparticles/nanomaterials and processes to improve the properties and performance of textiles. The synergism of textile technology and nanotechnological advancements has propelled a paradigm shift, changed the narrative, and formed novel platforms for textile surface engineering at both atomically affiliated and mole [...]

by Valeri Ligatchev

Received: 28 December 2024;  Published: 22 May 2025;  doi: 10.21926/rpm.2502008

So-called ‘Generalized Skettrup Model(s)’ (GSMs) of different (1D, 2D, 3D) spatial dimensionalities are used at simulations on temperature-dependent harmonic and anharmonic fractions of lattice thermal capacity of polyethylene and polypropylene with crystalline and/or amorphous atomic structures of limited spatial extents. Basic equations of the GSM slot in explicitly quantization effects of the single-particle and many-particle energy levels of spatially confined phonons. The harmonic lattice thermal c [...]

by A. Guillermo Bracamonte

Received: 24 November 2024;  Published: 18 February 2025;  doi: 10.21926/rpm.2501007

The generation of non-classical light with improved performances within tiny sizes, intervals of lengths, and diameters is still a challenge. The generation of variable wavelengths associated with different frequencies of energy modes produced from new sources of emitters within confined scales from the Quantum to Nano-and Micro-scales are of high impact. It is noted here that the concept of the generation of non-classical light related to electronics and photonics interactions with different topological matter con [...]

by Muhammad Qasim Zafar  , Ramisha Sajjad  , Muhammad Tuoqeer Anwar  , Muhammad Salman Mustafa  , Naveed Husnain  , Anas Bin Aqeel  and Muhammad Bilal Khan

Received: 01 October 2024;  Published: 10 February 2025;  doi: 10.21926/rpm.2501006

Metal Additive Manufacturing (MAM) process has been established as an industrial process for customized and intricate metallic components. It is one of the growing technologies proving its potential in numerous fields by introducing the latest processing methods. The significant growth in this technology is partially fueled by its ability to manufacture parts that could be performance-beneficial and commercially utilizable in various industries. The adaptability of metal AM processes has prompted innovation across [...]

by Christopher Igwe Idumah  , Ifeanyi Emmanuel Okoye  and Chioma Joan Ikebudu

Received: 05 September 2024;  Published: 02 February 2025;  doi: 10.21926/rpm.2501005

3-Dimension printing (3-DPT) or additive manufacturing (AM) technology has been utilized for a while in the construction of customized 3-D objects utilizing computer software such as computer-aided design (CAD). However, the emergence of an innovative and new four-dimensional printing (4-DPT) has enabled the synergy of AM technology with programmable materials in transforming digital processes virtually into physical entities, thereby providing innovation and advanced functionalities. 4-DPT is a procedure facilitat [...]

by Ghazaleh Ramezani  , Theo G. M. van de Ven  and Ion Stiharu

Received: 20 September 2024;  Published: 21 January 2025;  doi: 10.21926/rpm.2501004

This study investigates the hypothesis that diverse synthesis techniques can yield cellulose-graphene hybrids with tailored properties for specific applications, enabling advancements in flexible electronics, energy storage, environmental remediation, and biomedical devices. We examined and compared multiple synthesis methods, including chemical reduction, in-situ synthesis, green synthesis using natural reducing agents, solvent-assisted approaches, hydrothermal and solvothermal techniques, mechanical and chemical [...]

by Yusuf Sani  , Raba’ah Syahidah Azis  , Ismayadi Ismail  , Yazid Yaakob  , Chen Soo Kien  , Mohd Mustafa Awang Kechik  and Lim Kean Pah

Received: 11 October 2024;  Published: 26 January 2025;  doi: 10.21926/rpm.2501003

The widespread usage of various wireless equipment in many facets of life has significantly contributed to the severe pollution caused by electromagnetic radiation. Thankfully, scientists have created materials that can absorb microwave radiation and convert dangerous electromagnetic waves into other forms of energy, including heat energy. Many recent investigations have been published regarding developing materials that absorb microwaves with different constituents, morphologies, and architectures. Microwave-absor [...]

by Melisa S. Romano  , Valeria Corne  , Ricardo R. Azario  , Emiliano Centurión  and María del Carmen García

Received: 24 October 2024;  Published: 10 January 2025;  doi: 10.21926/rpm.2501002

Lead is a non-biodegradable toxic heavy metal. Biosorption is a simple, cost-effective and eco-friendly method for remediating lead-contaminated environments. Additionally, rice husk is a highly available residual biomass that can be used as a biosorbent. This study aimed to analyze the biosorption of Pb2+ using both natural and chemically treated rice husk and to evaluate the incorporation of the resulting biomass-contaminant residue into ceramic matrices to immobilize the removed Pb2+. Natural and alkaline-activa [...]