Article
Engineering, Electrical & Electronic
Emil John Y. Magaway, Yeganeh Farahi, Stephen M. Hanham, Zhenyu J. J. Zhang, Adriana Guaidia-Moreno, Miguel Navarro-Cia
Summary: Two polymerization, a fabrication technique, is promising for complex 3-D structures operating at terahertz (THz) due to its high resolution and print volume capability. However, standard photoresins have limitations in THz absorption and stability. A new photoresin called GP-Silica, based on silica nanoparticles, addresses these issues and outperforms other photoresins, enabling additive manufacturing for THz applications.
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY
(2023)
Article
Respiratory System
Zeming Zhou, Yuanrui Gu, Hong Zheng, Huijun Song, Shiguo Li, Chaowu Yan, Zhongying Xu
Summary: Transcatheter closure of inferior sinus venosus defect (ISVD) with patent ductus arteriosus (PDA) occluders, assisted by 3D heart model, has shown excellent outcomes and provides a new feasible treatment strategy for ISVD.
JOURNAL OF THORACIC DISEASE
(2022)
Review
Chemistry, Multidisciplinary
Shao-Feng Liu, Zheng-Wei Hou, Linhan Lin, Zhengcao Li, Hong-Bo Sun
Summary: 3D laser nanoprinting revolutionizes manufacturing by allowing maskless fabrication of 3D nanostructures at a resolution beyond the optical diffraction limit. It offers printed structures with unique physical, chemical, or mechanical properties not seen at the macro scale. However, its reliance on photopolymerization limits its usability to certain materials and functionalities. The ability to print diverse functional materials and the development of laser nanoprinting techniques beyond photopolymerization open up exciting new applications in nanophotonics and microelectronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yusheng Zhang, Yuming Su, Yi Zhao, Zhiye Wang, Cheng Wang
Summary: This study demonstrates the technology of two-photon polymerization inside a metal-organic framework crystal. Complex microstructures are built in the porous crystal to create a hybrid of crystal and microstructure. The metal-organic framework can be removed by acid treatment to release the printed structure. This technology has potential applications in MOF sensor device fabrication and data storage.
Article
Chemistry, Multidisciplinary
Qing Sun, Christian Dolle, Chantal Kurpiers, Kristian Kraft, Monsur Islam, Ruth Schwaiger, Peter Gumbsch, Yolita M. M. Eggeler
Summary: This study presents a novel in situ electron microscopy approach for investigating the shrinkage dynamics of 3D-printed nanoarchitectures during isothermal pyrolysis. The results reveal significant changes in the kinetic parameters and morphological textures of the 3D objects under different temperatures and atmospheric conditions. Understanding and controlling pyrolysis in 3D structures enables precise modification of shrinkage, creation of tensegrity structures, and promotes development of pyrolytic carbon with custom architectures and properties.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Biophysics
Venkata Rao Krishnamurthi, Nathaniel Harris, Ariel Rogers, Min Zou, Yong Wang
Summary: This study investigates how bacteria interact with cylindrical micro-pillars and modified cylindrical micro-pillars with different surface features, showing that sharp spikes have the largest effect on bacteria compared to smooth surfaces, convex and concave ripples. Numerical simulations explain the experimental observations and demonstrate that the observed effects are due to the geometric modifications. This research contributes to a better understanding of the interaction between bacteria and different surfaces.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Sukjun Kim, Regan Kubicek, Sarah Bergbreiter
Summary: This study presents a novel fabrication process that combines 3D printing with two-photon polymerization and flexible printed circuit boards (FPCBs) to develop flexible microsystems with 3D-printed electrostatic microactuators. The method allows for the creation of flexible integrated micromirror arrays and legged microrobots. The microactuators are robust enough to function while the devices are deformed and can easily be integrated with off-the-shelf electronics. The legged microrobot, actuated by 3D electrostatic actuators, achieves a locomotion speed of 0.27 body length per second without the need for external fields. This fabrication framework opens up new possibilities for highly integrated flexible microsystems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Manufacturing
Federico Cantoni, Daniel Maher, Eugenia Bosler, Stefan Kuhne, Laurent Barbe, Dirk Oberschmidt, Christophe Marquette, Rafael Taboryski, Maria Tenje, Ada- Ioana Bunea
Summary: Since its introduction in the 1980s, 3D printing has developed as a versatile and reliable tool with applications in different fields. Among these, two-photon polymerization is considered one of the most promising technologies due to its ability to achieve high precision printing down to submicron scale and free-form structure design. Recent advancements in faster laser scanning strategies and new photoresists have further enhanced this technology, leading to a wider range of applications. This study aims to provide an overview of the technology capability by comparing three commercial systems in a round-robin test.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Multidisciplinary
Frank Marco den Hoed, Andrea Ottomaniello, Omar Tricinci, Luca Ceseracciu, Marco Carlotti, Patrizio Raffa, Virgilio Mattoli
Summary: This study presents a novel technique for the realization of 3D micro-structures on complex surfaces with high conformability. The method involves two-photon polymerization of micro-structures on polymeric nano-membranes, which can be efficiently transferred to a target surface. Ultra-thin polymeric films are used as support to suspend and transfer the printed micro-structures. The technique offers flexibility in choice of structures, materials, transfer procedures, and substrate geometries.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhihan Hong, Piaoran Ye, Douglas A. Loy, Rongguang Liang
Summary: This paper introduces a new liquid silica resin and a printing process for high-precision glass optics. The proposed method can print various optical surfaces with accurate shape and high quality, suitable for imaging applications. It also enables the printing of complex optical systems with multiple elements, enhancing system flexibility and functionality.
Article
Optics
Georgia Konstantinou, Antoine Boniface, Damien Loterie, Eirini Kakkava, Demetri Psaltis, Christophe Moser
Summary: This study introduces an advanced digital scanning technique based on transmission matrix approach, for high-resolution three-dimensional light-based additive manufacturing. Compared to previous techniques, this method is faster, simpler, and provides smaller printing distances and smoother printed structures.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Engineering, Manufacturing
Yanping He, Qi Shao, Shih-Chi Chen, Renjie Zhou
Summary: Two-photon photopolymerization (TPP) is a popular method for fabricating three-dimensional micro- and nanostructures. This study proposes a non-invasive solution using optical diffraction tomography (ODT) to fully characterize TPP-fabricated structures, improving fabrication quality and reproducibility.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Manufacturing
David E. Marschner, Simone Pagliano, Po-Han Huang, Frank Niklaus
Summary: 3D printing by two-photon polymerization is a well-established manufacturing method for micro-and nanoscale polymer structures. However, it is challenging to print 3D objects with long overhanging features using this technology. This study introduces a methodology that combines different printing approaches to overcome this limitation and successfully prints overhanging cantilevers without the need for support structures. This substantially expands the capabilities and application space of 3D printing by two-photon polymerization.
ADDITIVE MANUFACTURING
(2023)
Review
Automation & Control Systems
Ada-Ioana Bunea, Daniele Martella, Sara Nocentini, Camilla Parmeggiani, Rafael Taboryski, Diederik S. Wiersma
Summary: Global research in microrobotics has thrived in the past two decades, with a focus on light-driven microrobots. Despite facing challenges, potential solutions are being explored to facilitate their translation into real-world applications.
ADVANCED INTELLIGENT SYSTEMS
(2021)
Article
Chemistry, Multidisciplinary
Frederik Kotz, Alexander S. Quick, Patrick Risch, Tanja Martin, Tobias Hoose, Michael Thiel, Dorothea Helmer, Bastian E. Rapp
Summary: Fused silica glass is an ideal material for high-performance optics, and direct laser writing (DLW) can be used to generate transparent fused silica glass microstructures with resolutions on the scale of tens of micrometers. This technology has the potential to enable a wide range of applications in next-generation optics and photonics, as well as microfluidics and biomedical fields.
ADVANCED MATERIALS
(2021)
