Synthesis and characterization methods: Biomaterials
Abstract
Biomaterials play a pivotal role in modern medicine and are widely used in fields such as orthopaedics, dentistry, cardiovascular medicine, and tissue engineering. Their clinical performance is determined by far more than the intrinsic properties of the materials themselves. The fabrication strategy and the extent of physicochemical, mechanical, and biological characterization are equally important in determining long-term functionality and biocompatibility. This review provides a concise overview of the major classes of biomaterials—namely, metals, ceramics, polymers, composites, and natural materials—along with their characteristic properties and representative biomedical applications. Particular attention is given to the principal fabrication routes, including conventional processing, wet-chemical methods, polymerization, electrospinning, freeze-drying, and additive manufacturing, with an emphasis on how each approach influences material architecture, surface properties, and biological behaviour. The review also examines the characterization techniques most commonly used to evaluate biomaterials, encompassing structural, morphological, surface, thermal, mechanical, and biological analyses. Current evidence indicates that no single fabrication or characterization technique can meet the diverse requirements of all biomaterial systems. Meaningful evaluation therefore requires the integration of appropriate fabrication routes with complementary analytical methods to establish robust relationships among processing conditions, material structure, and functional performance. Overall, the available evidence demonstrates that combining optimized fabrication strategies with comprehensive characterization protocols provides a foundation for developing reliable, application-specific biomaterials capable of meeting the evolving demands of regenerative medicine and biomedical engineering.
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References
- Ansari, M. A. A., Golebiowska, A. A., Dash, M., Kumar, P., Jain, P. K., Nukavarapu, S. P., Ramakrishna, S., & Nanda, H. S. (2022). Engineering biomaterials to 3D-print scaffolds for bone regeneration: Practical and theoretical consideration. Biomaterials Science, 10(11), 2789–2816. https://doi.org/10.1039/d2bm00035k
- Chelu, M., & Musuc, A. M. (2023). Advanced biomedical applications of multifunctional natural and synthetic biomaterials. Processes, 11(9), Article 2696. https://doi.org/10.3390/pr11092696
- Fiori, F., Girardin, E., Komlev, V. S., Manescu, A., & Rustichelli, F. (2017). Advanced microstructural characterizations of some biomaterials and scaffolds for regenerative orthopaedics. Key Engineering Materials, 745, 3–15. https://doi.org/10.4028/www.scientific.net/kem.745.3
- Grenier, J., Duval, H., Barou, F., Lv, P., David, B., & Letourneur, D. (2019). Mechanisms of pore formation in hydrogel scaffolds textured by freeze-drying. Acta Biomaterialia, 94, 195–203. DOI: 10.1016/j.actbio.2019.05.070.
- Gul, I. A., Abdul-Rani, A. M., Ahmad, A., Al-Amin, M., Aliyu, A. A. A., & Garba, E. (2025). Surface wettability response of hydroxyapatite-doped coatings on metallic biomaterials: A concise review. Solid State Phenomena, 370, 61–72. https://doi.org/10.4028/p-c4devs
- Hang, R., Yao, X., Bai, L., & Hang, R. (2025). Evolving biomaterials design from trial and error to intelligent innovation. Acta Biomaterialia, 197, 29–47. https://doi.org/10.1016/j.actbio.2025.03.013
- Jiang, P., Dai, Y., Hou, Y., Stein, J., Lin, S. S., Zhou, C., Hou, Y., Zhu, R., Lee, K.-B., & Yang, L. (2025). Artificial intelligence-assisted design, synthesis and analysis of smart biomaterials. BMEMat, 3(4), Article e70004. https://doi.org/10.1002/bmm2.70004
- John, P., Antony, I. R., Whenish, R., & Jinoop, A. N. (2022). A review on fabrication of 3D printed biomaterials using optical methodologies for tissue engineering applications. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 236(11), 1583–1594. https://doi.org/10.1177/09544119221122856
- Lele, M., Kapur, S., Hargett, S. E., Sureshbabu, N. M., & Gaharwar, A. K. (2024). Global trends in clinical trials involving engineered biomaterials. Science Advances, 10(29), Article eabq0997. https://doi.org/10.1126/sciadv.abq0997
- Li, J., Kim, C., Pan, C., Babian, A., Lui, E., Young, J. L., Moeinzadeh, S., Kim, S., & Yang, Y. (2022). Hybprinting for musculoskeletal tissue engineering. iScience, 25(5), Article 104229. https://doi.org/10.1016/j.isci.2022.104229
- Liu, M., Zhou, Y., Mei, X., Yu, Z., Guan, B., Xiao, Y., Liu, S., Wang, H., & Qin, Y. (2026). AI-driven biomaterial design: An intelligent closed loop from reverse design to biological response. Frontiers in Cell and Developmental Biology, 13, Article 1755565. https://doi.org/10.3389/fcell.2025.1755565
- Mirzaali, M. J., Moosabeiki, V., Rajaai, S. M., Zhou, J., & Zadpoor, A. A. (2022). Additive manufacturing of biomaterials—Design principles and their implementation. Materials, 15(15), Article 5457. https://doi.org/10.3390/ma15155457
- Ng, J. C., Yeoh, P. S. Q., Muhamad, F., Zhao, X., Wu, S., Wu, X., & Lai, K. W. (2026). Advancing biomaterial research with artificial intelligence. Biomaterials Advances, 180, Article 214535. https://doi.org/10.1016/j.bioadv.2025.214535
- Nilawar, S., Uddin, M., & Chatterjee, K. (2021). Surface engineering of biodegradable implants: Emerging trends in bioactive ceramic coatings and mechanical treatments. Materials Advances, 2(24), 7820–7841. https://doi.org/10.1039/d1ma00733e
- Ødegaard, K. S., Torgersen, J., & Elverum, C. W. (2020). Structural and biomedical properties of common additively manufactured biomaterials: A concise review. Metals, 10(12), Article 1677. https://doi.org/10.3390/met10121677
- Oleksy, M., Dynarowicz, K., & Aebisher, D. (2023). Advances in biodegradable polymers and biomaterials for medical applications—A review. Molecules, 28(17), Article 6213. https://doi.org/10.3390/molecules28176213
- Rajewska, J., Kowalski, J., Matys, J., Dobrzyński, M., & Wiglusz, R. J. (2023). The use of lactide polymers in bone tissue regeneration in dentistry—A systematic review. Journal of Functional Biomaterials, 14(2), Article 83. https://doi.org/10.3390/jfb14020083
- Shick, T. M., Abdul Kadir, A. Z., Ngadiman, N. H. A., & Ma’aram, A. (2019). A review of biomaterials scaffold fabrication in additive manufacturing for tissue engineering. Journal of Bioactive and Compatible Polymers, 34(6), 415–435. https://doi.org/10.1177/0883911519877426
- Vaiani, L., Boccaccio, A., Uva, A. E., Palumbo, G., Piccininni, A., Guglielmi, P., Cantore, S., Santacroce, L., Charitos, I. A., & Ballini, A. (2023). Ceramic materials for biomedical applications: An overview of properties and fabrication processes. Journal of Functional Biomaterials, 14(3), Article 146. https://doi.org/10.3390/jfb14030146
- Zadpoor, A. A. (2018). Current trends in metallic orthopedic biomaterials: From additive manufacturing to bio-functionalization, infection prevention, and beyond. International Journal of Molecular Sciences, 19(9), Article 2684. https://doi.org/10.3390/ijms19092684
- Zhang, K., Ma, B., Hu, K., Yuan, B., Sun, X., Song, X., Tang, Z., Lin, H., Zhu, X., Zheng, Y., García, A. J., Mikos, A. G., Anderson, J. M., & Zhang, X. (2022). Evidence-based biomaterials research. Bioactive Materials, 15, 495–503. https://doi.org/10.1016/j.bioactmat.2022.04.014
- Zhou, B., Li, X., Pan, Y., He, B., & Gao, B. (2025). Artificial intelligence-assisted next-generation biomaterials: From design and preparation to medical applications. Colloids and Surfaces B: Biointerfaces, 255, Article 114970. https://doi.org/10.1016/j.colsurfb.2025.114970