Additive Manufacturing Technologies and Applications

Additive manufacturing (AM) encompasses a family of layer-wise fabrication techniques that construct parts directly from digital models, enabling complex geometries, material efficiency and bespoke customisation. Key process categories include powder bed fusion, directed energy deposition, vat photopolymerisation and material extrusion, each offering distinct trade-offs in resolution, build rate and suitable materials. Metal AM processes—often employing laser or electron-beam sources to selectively fuse powder—have matured sufficiently for aerospace components featuring internal cooling channels and functionally graded structures. Polymer-based methods such as stereolithography and fused deposition modelling support rapid prototyping, medical devices and tooling, while ceramic and composite AM are advancing towards high-temperature and multifunctional applications.

The decoupling of design constraints from traditional manufacturing has driven innovations in topology optimisation, generative design and decentralised production. Across sectors—from lightweight aerospace parts and patient-specific implants to on-demand automotive spare parts—AM is redefining supply chains and reducing lead times. Recent progress in in situ process monitoring, digital twins and closed-loop control is enhancing reproducibility and part quality. Despite challenges in standardisation, certification, post-processing and cost competitiveness, global emphasis on sustainability, digital transformation and personalised manufacturing underlines the strategic importance of AM technologies worldwide.

Research from Nature Portfolio

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Research from all publishers

In pharmaceutical manufacturing, three-dimensional printing has emerged as a versatile platform for personalised dosage forms. Recent work demonstrates the fabrication of tablets, capsules and films with tailored release kinetics, multi-drug loading and complex internal architectures, paving the way for on-demand, patient-specific therapies and real-time dose adjustment.

Metal powder bed fusion remains a cornerstone of industrial AM, with studies refining selective laser melting parameters to mitigate defect nucleation, enhance part density and improve mechanical properties. Innovations include optimised energy-density windows for copper and aluminium alloys, advanced powder characterisation and environmental control strategies that broaden the alloy palette and support high-throughput production.

In the automotive sector, metal additive manufacturing techniques such as laser powder bed fusion, sheet lamination and directed energy deposition are being applied to produce structural brackets, heat exchangers and functional tooling. Case studies highlight benefits in on-demand, low-volume production, supply-chain simplification and sustainable material use. Integration with digital workflows and hybrid manufacturing underscores a shift towards agile, custom-tailored part production in vehicle assembly and maintenance.

Additive Manufacturing Technologies and Applications publication trend

The graph below shows the total number of articles in additive manufacturing technologies and applications across all publications each year (not limited to Nature Index journals).

Technical terms

Additive manufacturing (AM): layer-wise fabrication process building complex parts directly from digital models.

Powder bed fusion (PBF): AM method in which a thermal energy source selectively fuses powder particles within a bed.

Directed energy deposition (DED): technique depositing and simultaneously melting feedstock material via a focused energy beam.

Stereolithography (SLA): vat photopolymerisation AM process that cures liquid resin with ultraviolet light to form solid layers.

Fused deposition modelling (FDM): material extrusion method melting and extruding thermoplastic filament through a heated nozzle.

Topology optimisation: computational design strategy that optimally distributes material within a defined volume for performance objectives.

References

1. 3D printing of pharmaceutical dosage forms: Recent advances and applications. Advanced Drug Delivery Reviews (2024).
2. Current Status and Challenges of Powder Bed Fusion-Based Metal Additive Manufacturing: Literature Review. Metals (2023).
3. Metal Additive Manufacturing (MAM) Applications in Production of Vehicle Parts and Components—A Review. Metals (2024).