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Materials

Materials is an international peer-reviewed, open access journal on materials science and engineering published semimonthly online by MDPI.
The Spanish Materials Society (SOCIEMAT), Manufacturing Engineering Society (MES) and Chinese Society of Micro-Nano Technology (CSMNT) are affiliated with Materials and their members receive discounts on the article processing charges.
Indexed in PubMed | Quartile Ranking JCR - Q2 (Metallurgy and Metallurgical Engineering | Physics, Applied | Physics, Condensed Matter)

All Articles (54,768)

Humulus lupulus L. (hops) is best known for its application in the brewing industry; however, growing scientific interest has revealed its high content of natural antioxidants, including flavonoids and polyphenols. These compounds exhibit pronounced anti-inflammatory activity, positioning hops as a promising plant-derived ingredient for cosmetic use. The present study evaluates the antioxidant properties of Humulus lupulus L. (HL) extract and cosmetic formulations loaded with hop-based active substances. Antioxidant capacity was determined using ABTS, Folin–Ciocâlteu, and FRAP methods. The hop extract showed limited free radical scavenging activity and reducing power; however, these results still confirm its antioxidant potential. Importantly, cosmetic emulsions enriched with the HL extract maintained substantial antioxidant activity, demonstrating successful incorporation and stability of the bioactive compounds within the formulations. Physicochemical stability tests, including pH monitoring and visual evaluation during storage, indicated good stability under different conditions. In vivo studies confirmed the effectiveness of cosmetics containing HL extracts as natural anti-irritant agents, demonstrated by a 10% reduction in erythema after a three-week application period. These findings provide evidence supporting the use of Humulus lupulus L. in the development of plant-based cosmetic products designed to improve the health of skin prone to irritation.

21 February 2026

Simplified schematic of the laboratory-scale formulation process for the developed O/W emulsion. Raw material identifications: (A) rheology modifiers; (B) emulsifiers, emollients, and stabilizers; (C–F) active ingredients; and (G) functional ingredients.

There are many social needs that nanoarchitectonics, as an emerging technology, can meet, such as converting and storing energy [...]

21 February 2026

Volume V of the Special Issue “Obtaining and Characterization of New Materials” continues to provide a multidisciplinary venue for reporting cutting-edge breakthroughs in materials science and engineering, building on the success of earlier volumes [...]

21 February 2026

Using α-SiC powder as a raw material, with ytterbium oxide and magnesium oxide as liquid-phase sintering aids, silicon carbide ceramics were prepared via spark plasma sintering (SPS) at 1900, 2000, and 2050 °C with a 10 min dwell. As the sintering temperature increased, the grain size grew from 0.54 μm to 17.59 μm, while the thermal conductivity correspondingly increased from 122.4 W/(m·K) to 231.8 W/(m·K). Microstructural analyses revealed that elevated sintering temperatures significantly accelerated the dissolution–precipitation process, thereby inducing abnormal grain growth. Grain size is identified as the dominant factor governing the thermal conductivity of SiC ceramics. Larger grains reduce grain boundary density and interfacial thermal resistance, thereby facilitating phonon transport.

21 February 2026

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Materials - ISSN 1996-1944