Article
Multidisciplinary Sciences
Simao Coelho, Jongho Baek, James Walsh, J. Justin Gooding, Katharina Gaus
Summary: Two-photon direct laser writing enables nanometer-accuracy fabrication of three-dimensional structures, providing high-resolution imaging possibilities for optical microscopy.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Elaheh Sedghamiz, Modan Liu, Wolfgang Wenzel
Summary: Direct laser writing is an effective technique for fabricating complex 3D polymer networks using ultrashort laser pulses, but obtaining a time-resolved microscopic picture of the printing process in operando remains a challenge. In this study, a molecular dynamics simulation approach is used to model direct laser writing and investigate the effect of writing condition and aspect ratio on the mechanical properties of the printed polymer network.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yi Zeng, Keliang Liu, Haibo Ding, Zhejun Chong, Yanfang Niu, Yijun Guo, Mengxiao Wei, Xin Du, Zhongze Gu
Summary: This paper reports the microfabrication of three-dimensional (3D) photonic crystal hydrogels (PCHs) using supramolecular agarose PCH as a sacrificial scaffold. This allows for the creation of PCH sensors with precise 3D geometries and expands the potential applications of PCH sensors.
Article
Chemistry, Multidisciplinary
Jin Xu, Ruoxing Wang, Haoqing Jiang, Xingtao Liu, Licong An, Shengyu Jin, Biwei Deng, Wenzhuo Wu, Gary J. Cheng
Summary: In this study, ultrafast laser direct writing was combined with an external magnetic field for the first time to achieve mass production of 3D hybrid materials with unique functions. Metal-organic framework crystals were used as precursors to support graphene-coated ultrafine cobalt nanoparticles on 3D porous carbon. The study demonstrated significant improvements in electrochemical water-splitting tests due to the alignment of nanoparticles and controlled elemental compositions induced by the magnetic field.
Article
Chemistry, Multidisciplinary
Zihan Zhou, Liyang Xiao, Jun Zhao, Miao Zhou, Jingtong Zhang, Xiwen Du, Jing Yang
Summary: A low loaded D-Ni3.5Pd/NF catalytic electrode with abundant edge dislocations was prepared by millisecond laser direct writing in liquid nitrogen. The dense dislocations reduced hydrogen adsorption energy of Pd sites and enhanced water dissociation ability of Ni sites, leading to improved alkaline HER activity and stability.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Giuseppe Emanuele Lio, Antonio Ferraro, Tiziana Ritacco, Dante Maria Aceti, Antonio De Luca, Michele Giocondo, Roberto Caputo
Summary: A novel technique has been developed to improve the resolution of two-photon direct laser writing lithography. The study shows the fabrication of ultra-thin all-dielectric metalenses and highly detailed dielectric 3D bas-relief structures.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Ceramics
Rebecca L. Walton, Michael J. Brova, Beecher H. Watson, Elizabeth R. Kupp, Mark A. Fanton, Richard J. Meyer, Gary L. Messing
Summary: Direct writing with anisotropic nozzles can significantly improve the alignment of tabular barium titanate template particles in a matrix powder, leading to enhanced texture in ceramics. COMSOL Multiphysics simulations show that torque distributions during direct writing directly affect the electromechanical properties of the printed ceramic materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Crystallography
Mattia Sabadin, Jeroen A. H. P. Sol, Michael G. Debije
Summary: In this study, luminescent solar concentrators were developed using a liquid crystal elastomer matrix and direct ink writing technique. The resulting prints exhibited anisotropic edge emissions and showed localized color and intensity variations when viewed through a polarizer.
Article
Chemistry, Multidisciplinary
Kaichen Xu, Qi'ao Li, Yuyao Lu, Huayu Luo, Yihui Jian, Dingwei Li, Depeng Kong, Ruohan Wang, Jibing Tan, Zimo Cai, Geng Yang, Bowen Zhu, Qingqing Ye, Huayong Yang, Tiefeng Li
Summary: A calorimetric thermal flow sensor based on laser direct writing and laser-induced graphene has been proposed in this paper, which can monitor both flow intensities and orientations. The sensor exhibits high sensitivity and an extended flow detection range. Integrating the sensor with a data-acquisition board and a dual-mode graphical user interface enables wireless and dynamic monitoring of respiration and the motion of robotic arms.
Article
Chemistry, Multidisciplinary
Jiajun Li, Yunyun Mu, Miao Liu, Xinping Zhang
Summary: The direct laser writing technique allows for the fabrication of surface-enhanced Raman scattering structures on the inner wall of a hollow fiber, enabling high-sensitivity detection of low-concentration molecules.
Article
Nanoscience & Nanotechnology
S. Wang, Z. Zhou, B. Li, C. Wang, Q. Liu
Summary: The New-Generation LDW system is a maskless, highly efficient, and cost-effective micro-/nano-fabrication tool that improves fabrication resolution through a new working principle of laser-matter non-linear interaction, exceeding diffraction limits and enabling any material to be used as resist materials, hence greatly expanding its usage scenarios. This new system has tremendous potential in fabrication of various nanodevices and nanostructures for different material systems.
MATERIALS TODAY NANO
(2021)
Article
Chemistry, Multidisciplinary
Yushan Yang, Baokang Dang, Chao Wang, Yipeng Chen, Kaicong Chen, Xinjie Chen, Yingying Li, Qingfeng Sun
Summary: Nanoengineered wood is a renewable structural material with micro and nanoarchitectures that exhibits beneficial characteristics such as lightweight nature, mechanical strength, eco-friendliness, thermal insulation, and low carbon footprint. A wooden metamaterial, derived from nanowood, has been designed and synthesized, which is both ultrastiff and lightweight. This material overcomes the deficiencies of existing building materials and advanced aerospace thermal insulators, and has the potential to revolutionize architecture and manufacturing industries as a lightweight, eco-friendly, scalable, energy-efficient, and cost-effective option.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Morgan A. Brown, Kara M. Zappitelli, Loveprit Singh, Rachel C. Yuan, Melissa Bemrose, Valerie Brogden, David J. Miller, Matthew C. Smear, Stuart F. Cogan, Timothy J. Gardner
Summary: This report describes the integration of a 3D microelectrode array on a thin-film flexible cable for neural recording. The fabrication process combines traditional thin-film processing techniques and direct laser writing of 3D structures at micron resolution via two-photon lithography. The report provides a method for producing high-aspect-ratio structures.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Nabila Nabi Nova, Lauren D. Zarzar
Summary: In this article, a direct laser writing method for synthesizing and patterning graphitic carbon from liquid organic precursors is reported. The laser-deposited carbon exhibits tunable electrical resistivities and microscale resolution, making it a promising candidate for applications in energy storage and sensing.
CHEMISTRY OF MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Y. Yao, Y. Ni, L. H. He
Summary: The study explores the origin of negative Poisson's ratio in rutile-type oxides and fluorides through density functional theory (DFT) simulation, highlighting the dominant role of nearest-neighbor central force interactions. A new three-dimensional mechanical metamaterial is designed by mimicking the bond structure via elastic beams. The analytical expressions for the effective Poisson's ratio and compressibility are derived and validated by finite element computations, indicating the material can exhibit negative Poisson's ratio and negative linear, area, or volume compressibility simultaneously.
MATERIALS & DESIGN
(2021)
Article
Engineering, Aerospace
Qingxiang Ji, Xueyan Chen, Vincent Laude, Jun Liang, Guodong Fang, Changguo Wang, Rasoul Alaee, Muamer Kadic
Summary: Infrared camouflage based on artificial thermal metasurfaces has become a hot topic recently. It aims to hide specific objects from infrared detection by eliminating the thermal radiation differences between the object and the background. This article presents a simple and practicable design for infrared stealth using a multilayer film, which offers advantages in scalability, flexible fabrication, and structural simplicity. The multilayer medium consists of a silicon substrate, carbon layer, and zinc sulfide film, and its optical properties are determined using the transfer matrix method. By locally changing the thickness of the coating film, the spatial tunability and continuity in thermal emission are demonstrated, achieving thermal camouflage functionality. Moreover, thickness-engineered multilayer films also demonstrate other functionalities such as thermal illusion and thermal coding.
CHINESE JOURNAL OF AERONAUTICS
(2023)
Article
Chemistry, Multidisciplinary
Yi Chen, Mahmoud A. A. Abouelatta, Ke Wang, Muamer Kadic, Martin Wegener
Summary: Introduces reconfigurable plug-and-play electromagnetic metamaterials, where the building blocks are standard bayonet Neill-Concelman (BNC) connectors and the effective properties are achieved by tailoring local and nonlocal interactions mediated by standard coaxial cables. Demonstrates unprecedented dispersion relations with multiple regions of slow waves and backward waves in the lowest band. Importantly, the dispersion relation of such metamaterials is not limited by causality as in the case of local resonances.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Natalie Munding, Magdalena Fladung, Yi Chen, Marc Hippler, Anthony D. Ho, Martin Wegener, Martin Bastmeyer, Motomu Tanaka
Summary: Cell behaviors depend on the elastic properties of the microenvironments, which differ from polymer-based substrates. Metamaterials, with adjustable elastic properties, offer a promising way to mechanically control stem cells. By designing microstructured bio-metamaterials based on a silicon elastomer-like photoresist and two-photon laser printing, the differential responses of human mesenchymal stem cells (hMSCs) correlate with the calculated elastic properties of the bio-metamaterials, suggesting the potential of using bio-metamaterials for cell behavior regulation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Adria Grabulosa, Johnny Moughames, Xavier Porte, Muamer Kadic, Daniel Brunner
Summary: Continued miniaturization in electronic integrated circuits has reached its limit, while communication energy consumption has become the dominant limitation. To address this, we have developed a fabrication process for three-dimensional photonic integration using additive photo-induced polymerization. This allows for the printing of photonic waveguides and their stable integration on standard semiconductor samples.
Article
Multidisciplinary Sciences
Qingxiang Ji, Zhiming Xue, Zaoxu Zhang, Zhanbo Cui, Muamer Kadic, Changguo Wang
Summary: Twisted bilayer graphene demonstrates extraordinary optical and electrical characteristics due to interlayer interactions. Inhomogeneous interlayer deformations caused by strong van der Waals interactions at the interface change the graphene's physical properties. The deformation behavior of twisting a graphene flake over a rigid graphene substrate is studied using theoretical and numerical models. The influences of in-plane deformations are significant at small-twist-angles.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Physics, Multidisciplinary
Richard Craster, Sebastien Guenneau, Muamer Kadic, Martin Wegener
Summary: Mechanical metamaterials, designed composites with elastic behaviors and effective mechanical properties beyond those of their individual ingredients, have made significant progress in the last decade due to advances in computational science and manufacturing. This review provides a tutorial on its mathematical basis and summarizes the state-of-the-art in both conceptual and experimental aspects.
REPORTS ON PROGRESS IN PHYSICS
(2023)
Article
Physics, Multidisciplinary
Yi Chen, Ke Wang, Muamer Kadic, Sebastien Guenneau, Changguo Wang, Martin Wegener
Summary: Previous theory and experiment have shown that introducing strong nonlocal interactions in addition to local interactions into metamaterials can lead to unusual wave dispersion relations. In this study, the authors investigate the frequency-dependent acoustical phonon transmission in a slab of nonlocal metamaterial. They find a series of bound states in the continuum and sharp transmission resonances next to sharp transmission minima. The findings are validated by numerical calculations on three-dimensional metamaterial microstructures.
COMMUNICATIONS PHYSICS
(2023)
Article
Engineering, Mechanical
Ke Wang, Yi Chen, Muamer Kadic, Changguo Wang, Martin Wegener
Summary: In our previous work, we have demonstrated the presence of roton-like dispersion relations in acoustic metamaterials with nonlocal interactions, similar to superfluid Helium-4. However, this effect was observed only for specific sound propagation directions. In this study, we designed a three-dimensional cubic-symmetry airborne acoustic metamaterial that exhibits roton-like behavior along all three orthogonal directions, albeit with significant anisotropy. Our numerical calculations, in good agreement with a simplified analytical model, indicate that experimental validation is possible but challenging due to the complex and dense three-dimensional network of acoustic channels required.
ACTA MECHANICA SINICA
(2023)
Article
Mechanics
K. K. Dudek, L. Mizzi, J. A. Iglesias Martinez, A. Spaggiari, G. Ulliac, R. Gatt, J. N. Grima, V. Laude, M. Kadic
Summary: The ability to control Poisson's ratio of functional materials is essential for the development of efficient structures in various fields. This study proposes novel microscopic 2D and 3D functionally-graded mechanical metamaterials that can exhibit a wide range of Poisson's ratio depending on their composition. The research also explores the dynamic properties of these structures, specifically how the variation in composition affects wave propagation velocity. This has significant implications for applications involving wave attenuation or sensors.
COMPOSITE STRUCTURES
(2023)
Article
Multidisciplinary Sciences
Lianchao Wang, Julio A. Iglesias Martinez, Gwenn Ulliac, Bing Wang, Vincent Laude, Muamer Kadic
Summary: In this paper, a model for non-reciprocal and non-Newtonian mechanical metamaterials is demonstrated by combining the concept of local resonances and fixing boundaries. Via computational models and impact experiments, the authors show that stiffness substantially changes as a function of the loading velocity.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Hammou Oubeniz, Abdelhaq Belkacem, Hicham Mangach, Muamer Kadic, Abdenbi Bouzid, Younes Achaoui
Summary: This paper explores the applications of the dispersive feature of metals in plasmonics, as well as the impact of scaling parameters on transmission and absorption properties. By comparing the analytical RCWA with the numerical FEM, the underlying mechanisms of these phenomena are revealed.
Article
Chemistry, Physical
Abdelhaq Belkacem, Hammou Oubeniz, Hicham Mangach, Muamer Kadic, Noureddine Cherkaoui Eddeqaqi, Abdenbi Bouzid, Younes Achaoui
Summary: This paper investigates the mechanisms of enhancing optical waves through perforated plates and explores the coupling potential between different materials. It is found that optimized geometrical parameters can create controllable band gaps for optical waves.
Article
Automation & Control Systems
Xiaojun Tan, Yifeng Li, Lianchao Wang, Kaili Yao, Qingxiang Ji, Bing Wang, Vincent Laude, Muamer Kadic
Summary: This study proposes a novel flexible energy-absorbing negative stiffness mechanical metamaterial, inspired by the excellent cushioning performance of mammal paw pads. Results show that this material outperforms traditional packaging materials in cushion performance. Moreover, a performance programming strategy is proposed to achieve multistage tuning between large energy absorption and high rebound properties.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Automation & Control Systems
Weinan Gao, Jingtian Kang, Guohui Wang, Haoxiang Ma, Xueyan Chen, Muamer Kadic, Vincent Laude, Huifeng Tan, Yifan Wang
Summary: A design of soft pneumatic actuators with structured fabrics as actuator skins is proposed, enabling multiple deformations and high bending stiffness variation. The developed actuators show adjustable bending stiffness and comparable blocking force to conventional fabric-reinforced pneumatic actuators. The actuators are used to construct a bionic soft gripper with multiple degrees of freedom, capable of lifting weights up to 1 kg and grasping objects of various sizes.
ADVANCED INTELLIGENT SYSTEMS
(2023)
