Abstract This study proposes an advanced algorithm for predicting the optimal orientation in human manikin 3D printing. We can print mesh data on any scale depending user’s needs. Once printing was determined, were dissected based printer’s maximal volume using our previous work. Then, we applied newly proposed algorithm, designated as “per-pixel signed-shadow casting,” to each part calculate v...

Over the last decade, 4D printing paradigm has received intensive research efforts, whether from researchers in additive manufacturing (AM) or smart materials (SMs) development. Related works have thereby generated a large number of ad-hoc solutions with relevant disparate and scattered knowledge. This lack common core knowledge is mainly due to multiple involved expertise for fabricating stimu...

Recently, photo-controlled reversible addition-fragmentation chain transfer (RAFT) polymerization has been successfully applied in digital light processing 3D printing. It provides a convenient way to tune the surface properties of printed object. However, so far, micro- and nanostructures reconfigurations based on photo-induced RAFT have not presented. In this work, one macro-photoiniferter, s...

Auxetic structures have been produced using 3D printing and knitted textile materials. A review of other auxetic textiles is presented along with the new range configurations were developed, prototyped, tested to demonstrate significant response, including Poisson’s ratio up negative one. The concept 4D was employed create environmentally responsive hinges in some structures, allowing material ...

PURPOSE Dynamic or 4D imaging of the thorax has many applications. Both prospective and retrospective respiratory gating and tracking techniques have been developed for 4D imaging via CT and MRI. For pediatric imaging, due to radiation concerns, MRI becomes the de facto modality of choice. In thoracic insufficiency syndrome (TIS), patients often suffer from extreme malformations of the chest wa...

3D Printed Fe-Shape Memory Alloys In article number 2200171, Dohyung Kim, Irene Ferretto, Christian Leinenbach and Wookjin Lee demonstrate 4D printing of Fe-based shape memory alloy using laser powder bed fusion technique for the first time. Integrating material-inherent functionalities into complex structures allows new including morphing, metal-material behavior, extraordinary specific streng...

Shape memory polymer composites (SMPCs) are a type of smart material that can change shapes under the stimulation external environment, and they have great potential in aerospace, biomedical, robotics, electronic devices due to their advantages high strength toughness, lightweight, impact resistance, corrosion aging resistance. 4D printing technology has provided new opportunities for further d...

4D metamaterials with zero Poisson’s ratio, shape-memory recovery, and high energy-absorption features are introduced in the article number 2200656 by Mahdi Bodaghi co-workers. Thermo-mechanical designed based on star-shaped unit-cells fabricated printing technology. It is shown that they have great potential energy absorbing applications like reversible car bumpers where plastic deformations c...

Normally, 3D printed objects via photopolymerization usually don’t have fully optimized mechanical properties and functions. In this context, the addition of single filler can improve these through access to composite materials. However, inevitably has a negative influence on light penetration inside composites strongly reducing depth cure. Hence, fabrications photo-composites based combination...