Article
Nanoscience & Nanotechnology
Adam L. Bachmann, Brendan Hanrahan, Michael D. Dickey, Nathan Lazarus
Summary: This paper presents a method of laser forming that can self-fold 2D printed circuit boards into 3D structures with electronic function. The laser settings are tuned to achieve cutting or folding, and two approaches are explored to enable folding of commercial PCBs. The technique can create complex, multifold structures with integrated electronics, and has the potential for rapid prototyping of complex 3D electronics.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Pallagani Jeevankumar, Poly Rose, Ammanabrolu Rajanikanth, Thankappan Pillai Rajasekharan, Vummethala Seshu Bai
Summary: Dense ceramic components of complex shapes can be fabricated using the RPGC process, which combines rapid prototyping and gelcasting techniques. EPS molds have advantages in easy demolding and near-net shaping, and result in components with uniform density and good mechanical properties.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Dongyu Wang, Ting Chen, Yong Zeng, Xianfu Chen, Weihong Xing, Yiqun Fan, Xu Qiao
Summary: In this study, ceramic microfiltration membranes with tertiary gradient structures were prepared using a combination of 3D printing and dip-coating technology. The membranes exhibited high pure water permeance and good performance in the separation of nanoparticles from water suspensions.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Muyi Shen, Huifen Zhao, Weiwei Feng, Yali Luo, Han Chen, Yifeng Zheng, Lin Ge, Lucun Guo
Summary: By modifying the direct foaming process with the introduction of protective gelling agent (PGA) combined with quench-freezing technique, porous Si3N4 substrates with improved stability and strength were prepared. The adhesion strength of the nHA coating was relatively low, but the pristine porous silicon nitride exhibited considerable bioactivity comparable to that with nHA coating.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
A. Barimani-Varandi, M. Kazemi Nasrabadi, B. Abedi Ravan, M. Javadi
Summary: The study investigates rapid prototyping of a geometry similar to integral canopies using the incremental forming process of transparent polycarbonate sheets, focusing on apparent transparency and geometric accuracy. Experimental results show that tool rotational velocity and toolpath strategy have an impact on the apparent transparency and geometric accuracy of the final samples, and post-heating treatment and the use of a non-rotating tool can further improve the quality of the final products.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Carlie Rein, Mehmet Toner, Derin Sevenler
Summary: Soft lithography allows rapid prototyping of precise microfluidic features using a deformable elastomer like polydimethylsiloxane (PDMS). However, for applications where flexibility of PDMS is a drawback, more rigid materials like epoxy and glass have been proposed. Devices fabricated from epoxy and glass offer superior mechanical performance, feature resolution, and solvent compatibility compared to alternatives. This article presents a detailed step-by-step method for fabricating rigid microfluidic devices from soft lithography patterned epoxy and glass, demonstrating their use in high throughput cell focusing with rigid high aspect ratio spiral microchannels.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Ceramics
Changhui Song, Yongqi Chen, Zibin Liu, Yinong Li, Yongqiang Yang, Jiakuo Yu
Summary: This paper presents a strategy for removing excess cured areas caused by light scattering in order to improve the forming accuracy and speed of ceramic parts.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Engineering, Manufacturing
Saja Aabith, Richard Caulfield, Omid Akhlaghi, Anastasia Papadopoulou, Shervanthi Homer-Vanniasinkam, Manish K. Tiwari
Summary: Direct-write printing has been instrumental in additive manufacturing, especially in extrusion-based printing, expanding the range of materials and applications. However, the synthesis and preparation of printing inks for direct-write printing can be complex. This study develops a precise 3D printable polymer that allows for the easy prototyping of micrometre-scale silicone structures without the need for cleanroom facilities.
ADDITIVE MANUFACTURING
(2022)
Article
Nanoscience & Nanotechnology
Futianchun Zhu, Yu He, Zefan Lu, Hongliang Fan, Tao Zhang
Summary: This paper introduces a novel concept of composite elastomers to provide flexible support for photocured thin films, allowing most photocurable resins to be used in microfluidic device fabrication. The rapid and simple fabrication process is expected to bridge the gap between academic research and industrial practice, greatly enriching material choices for diverse applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Optics
A. Salmon, M. Lavancier, C. Brulon, L. Coudrat, B. Fix, G. Ducournau, R. Peretti, P. Bouchon
Summary: Additive manufacturing is used to fabricate terahertz metamaterials on a flexible polyimide film, with investigations into the limits of the technique showing a printing resolution of about 5 microns. The agreement between THz-TDS measurements and numerical simulations demonstrates that the microplotter system can be effectively used for rapid prototyping by adjusting a limited number of fabrication parameters.
Article
Pharmacology & Pharmacy
Manasa Moganti, H. N. Shivakumar
Summary: A novel sol-gel system of calcium carbonate (CC) was developed to prolong gastric residence time and improve bioavailability. Through optimization of formulation composition, the optimized batch displayed significantly higher gastric retention time and controlled release compared to the marketed suspension, showing promise for improving the bioavailability of nutrients with absorption window in the upper gastrointestinal tract.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Florian Hubert, Tobias Bader, Larissa Wahl, Andreas Hofmann, Konstantin Lomakin, Mark Sippel, Nahum Travitzky, Gerald Gold
Summary: This paper presents an additive manufacturing method for 3D-printed waveguides made of ceramic materials, which offers advantages such as low-cost fabrication, moderate handling effort, and independence of waveguide geometry. Through comparative experiments, it is found that ceramic waveguides have higher surface roughness, resulting in higher attenuation coefficient compared to epoxy resin and commercial waveguides.
APPLIED SCIENCES-BASEL
(2022)
Article
Biochemistry & Molecular Biology
Zhouying Tan, Xi Li, Chaojie Yu, Mengmeng Yao, Zhongming Zhao, Bingyan Guo, Lei Liang, Yuping Wei, Fanglian Yao, Hong Zhang, Junjie Li
Summary: A self-gelling hemostasis powder based on polyacrylic acid/polyacrylamide/quaternate chitosan (PAA/PAM/QCS) is prepared to improve the hemostatic effect of non-compressible wounds, unknown bleeding points, and irregularly shaped wounds. The PAA/PAM/QCS rapidly forms a stable hydrogel when in contact with water and shows good adhesive properties on wet tissue surfaces. The introduction of QCS enhances the antibacterial activity of the self-gelling hemostasis powder.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Ceramics
Sandhya G. Nair, K. J. Sreejith, C. Srinivas, K. Prabhakaran, Renjith Devasia
Summary: Monophasic mullite precursors, aluminosiloxanes, were synthesized using a novel method and characterized. These aluminosiloxanes exhibit low viscosity and high ceramic residue, making them suitable as ceramic matrix precursors for CMCs. The study shows that the composition of the ceramic can be controlled by adjusting the Al/Si ratio of the precursors.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Slawomir Blasiak, Pawel Andrzej Laski, Jakub Emanuel Takosoglu
Summary: The study aimed to design and produce a pneumatic directional control valve for controlling pneumatic drives, focusing on determining flow parameters and optimizing flow to achieve high performance and efficiency.
Article
Materials Science, Ceramics
Dan Zhao, Yi Feng, Zhipeng Pi, Fan Zhang
Summary: Phase equilibria in the ZrO2-GdO1.5-TaO2.5 (ZGTO) system were experimentally investigated, and the differences between ZGTO and the existing ZrO2-YO1.5-TaO2.5 (ZYTO) were discussed. The study is useful for thermodynamic assessment of ZGTO and can guide the design of novel thermal barrier coatings materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yutaka Ohya, Wingki Mey Hendra, Chika Takai-Yamashita, Takayuki Ban
Summary: Diffusion couples of rutile and corundum single crystals were prepared and examined to study the solid solution and precipitation of corundum in rutile during cooling. Different precipitation forms of corundum were observed under different cooling conditions.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiaming Zhan, Yunfa Guo, Hao Wang
Summary: This study systematically investigates the mechanical behaviors of calcium fluoride in humid environments. The effects of water on the deformation and plastic enhancement of CaF2 under indentation are explored through microindentation experiments, atomic simulations, and Raman spectroscopy measurement.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hangfeng Zhang, Henry Giddens, Theo Graves Saunders, Matteo Palma, Isaac Abrahams, Haixue Yan, Yang Hao
Summary: The relationship between low and high frequency tunabilities in tin substituted barium titanate ceramics was investigated. It was found that there are differences in tunabilities at different frequencies due to the different activities of larger ferroelectric domains and polar nanoclusters.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Kaibiao Xi, Jiacheng Liu, Beibei Song, Huarong Cheng, Yihao Li, Xiaole Yu, Mupeng Zheng, Mankang Zhu, Yudong Hou
Summary: Composite modulation in the superparaelectric state of the BTBZ-CT system is proposed as an effective strategy to achieve both NTCC and excellent energy storage performance in dielectric ceramics. The addition of BZ and CT to BT ferroelectrics can move the SPE state to the normal use temperature zone, resulting in enhanced NTCC characteristics and energy storage performance. Furthermore, intentional precipitation of CT at grain boundaries can refine the grain size, increase the bandgap, and strengthen the local electric field distribution, thereby enhancing the breakdown electric field.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Hamed Salimkhani, Lovro Fulanovic, Till Froemling
Summary: The demand for robust multilayer ceramic capacitors with high-temperature and high-power capabilities is increasing rapidly. However, cost-effective production is a challenge. This study investigates the use of Na0.5Bi0.5TiO3-based materials as promising lead-free options. By adding sintering aids, the sintering temperature of Na0.5Bi0.5TiO3-BaTiO3-CaZrO3-BiAlO3 solid solutions was successfully reduced to 975 degrees C, suitable for co-sintering with Cu electrodes without adverse effects on capacitor properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Mingxing Li, Ran Mo, Zeshui Xu, Jie Zhou, Conglin Zhang, Xuefeng Cui, Fang Ye, Laifei Cheng, Ralf Riedel
Summary: Polymer infiltration and pyrolysis is an effective method for preparing ceramic matrix composites. The transformation of polymer to ceramic during the process affects the residual stress and interface behavior in the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yan Kang, Lin Chen, Chang-Jiu Li, Guan-Jun Yang
Summary: A novel abradable seal coating with low hardness and high bonding strength was successfully designed and prepared. This coating has significantly higher abradability and erosion resistance compared to metal-based coatings, and can retain excellent abradability and have a long lifetime during service.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Qingzhong Song, Xiangdong Zha, Ming Gao, Yingche Ma
Summary: This study analyzes the influence of calcia refractory purity on the properties of calcia crucibles. Higher purity calcia results in well-developed grains and improved hydration resistance, leading to better high-temperature strength and thermal shock resistance. In contrast, lower purity calcia crucibles exhibit inferior properties. Therefore, high-purity calcia is considered a potential refractory for manufacturing oxide crucibles.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sehreish Abrar, Faisal Nazeer, Zhuang Ma, Ling Liu, Abdul Malik, Mustafa Kamal, Abdullah G. Al-Sehemi
Summary: To raise the operating temperature of Si-based ceramic matrix composites (CMCs), researchers have applied thermal/environmental barrier coating (T/EBCs) materials, typically rare earth silicates. However, the high thermal conductivity and the mismatch of thermal expansion have been major challenges in developing new materials that can offer thermal insulation and environmental protection to CMCs. In this study, entropy engineering was used to create a multicomponent equi-atomic single-phase pyro silicate with extremely low thermal conductivity and enhanced water vapor corrosion resistance. The research findings show the potential of high entropy disilicates in achieving ultra-low thermal conductivity and low weight loss in corrosive environments.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zi-bo Niu, Daxin Li, Dechang Jia, Zhihua Yang, Kunpeng Lin, Paolo Colombo, Ralf Riedel, Yu Zhou
Summary: In this study, SiBCN ceramics with a special structure were prepared to improve the oxidation resistance. The effect of the structure on oxidation behavior and kinetics was investigated, revealing that the special structure can effectively inhibit heterogeneous oxidation and enhance the oxide layer composition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Melike Donmez, Metehan Erdogan, Cihangir Duran
Summary: The limited densification of CeO2 ceramics was improved by using an anorthite-based glass, resulting in high dielectric constant and quality factor with minimum dielectric loss. The CeO2-(anorthite-based) glass ceramic showed promising results in terms of low temperature densification and microwave properties.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
S. Rahmati, R. G. A. Veiga, J. Mostaghimi, T. Coyle, A. Dolatabadi
Summary: This study provides an atomic-scale description of the high-velocity impact of alpha-Al2O3 particles onto an alpha-Al2O3 substrate during Aerosol Deposition (AD). The results suggest that the crystal orientation plays a crucial role in both plasticity and damage of the nanoparticles. Impact velocity has a direct correlation with plasticity and fragmentation, but adhesion efficiency has only a marginal increase. The crucial element lies in the substrate's surface alterations caused by the fragments left on the substrate after impact.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Bo-Wen Chen, Yan-Mei Kan, De-Wei Ni, Chun-Jing Liao, Hong-Da Wang, Yu-Sheng Ding, Shao-Ming Dong
Summary: This study characterized the long-term and repeated ablation properties of modified Cf/HfC-SiC composites with YB4-Al2O3-Si3N4 under an air plasma torch. The structural stability and viscosity of the oxide layer were found to affect the ablation resistance of the composites. By forming nano c-HfO2 grains and high-viscosity Al-Si-Y-O glassy phase, the structural stability of the oxide layer was improved, resulting in enhanced ablation resistance. However, the oxidation of Si3N4 led to the formation of NO, NO2, and excessive SiO2 glassy phase, which resulted in a porous structure and reduced the viscosity of the oxide layer. Therefore, the addition of Si3N4 decreased the ablation resistance of the composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yongxing Wei, Huawei Zhang, Siyuan Dong, Changqing Jin, Chenxing Bai, Junle Dai, Zengzhe Xi, Zhonghua Dai, Zengyun Jian, Li Jin
Summary: In this study, solid solutions of xBi(Ni1/2Hf1/2)O-3-(1 - x)PbTiO3 (xBNH-PT) were synthesized to investigate their phase boundary behaviors and physical properties. The presence of a tetragonal-pseudocubic phase boundary and a spontaneous ferroelectric-relaxor transition at specific compositions were confirmed. The introduction of a tetragonal-pseudocubic phase boundary improved the piezoelectric properties and suppressed the spontaneous ferroelectric-relaxor transition.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)