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Bidirectional rotating direct-current triboelectric nanogenerator with self-adaptive mechanical switching for harvesting reciprocating motion Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-12 Donghan Lee, Joonmin Chae, Sumin Cho, Jong Woo Kim, Awais Ahmad, Mohammad Rezaul Karim, Moonwoo La, Sung Jea Park, Dongwhi Choi
Amid the growing interest in triboelectric nanogenerators (TENGs) as novel energy-harvesting devices, several studies have focused on direct current (DC) TENGs to generate a stable DC output for operating electronic devices. However, owing to the working mechanisms of conventional DC TENGs, generating a stable DC output from reciprocating motion remains a challenge. Accordingly, we propose a bidirectional
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Recent advances in high charge density triboelectric nanogenerators Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-12 Xin Cui, Jiaheng Nie, Yan Zhang
Triboelectric materials with high charge density are the building-block for the commercial application of triboelectric nanogenerators (TENGs). Unstable dynamic processes influence the change of the charge density on the surface and inside of triboelectric materials. The charge density of triboelectric materials depends on the surface and the internal charge transfer processes. The focus of this review
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Role of heterogenous microstructure and deformation behavior in achieving superior strength-ductility synergy in zinc fabricated via laser powder bed fusion Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-09 Zhi Dong, Changjun Han, Yanzhe Zhao, Jinmiao Huang, Chenrong Ling, Gaoling Hu, Yunhui Wang, Di Wang, Changhui Song, Yongqiang Yang
Zinc (Zn) is considered a promising biodegradable metal for implant applications due to its appropriate degradability and favorable osteogenesis properties. In this work, laser powder bed fusion (LPBF) additive manufacturing was employed to fabricate pure Zn with a heterogeneous microstructure and exceptional strength-ductility synergy. An optimized processing window of LPBF was established for printing
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Piezotronic neuromorphic devices: principle, manufacture, and applications Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-08 Xiangde Lin, Zhenyu Feng, Yao Xiong, Wenwen Sun, Wanchen Yao, Yichen Wei, Zhong Lin Wang, Qijun Sun
With the arrival of the era of artificial intelligence (AI) and big data, the explosive growth of data has raised higher demands on computer hardware and systems. Neuromorphic techniques inspired by biological nervous systems are expected to be one of the approaches to breaking the von Neumann bottleneck. Piezotronic neuromorphic devices modulate electrical transport characteristics by piezopotential
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Revealing precipitation behavior and mechanical response of wire-arc directed energy deposited Mg-Gd-Y-Zr alloy by tailoring aging procedures Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-05 Xinzhi Li, Xuewei Fang, Zhiyan Zhang, Shahid Ghafoor, Ruikai Chen, Yi Liu, Kexin Tang, Kai Li, Minghua Ma, Jiahao Shang, Ke Huang
Mg-Gd-Y-Zr alloy, as a typical magnesium rare-earth (Mg-RE) alloy, is gaining popularity in the advanced equipment manufacturing fields owing to its noticeable age-hardening properties and high specific strength. However, it is extremely challenging to prepare wrought components with large dimensions and complex shapes because of the poor room-temperature processability of Mg-Gd-Y-Zr alloy. Herein
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Effect of solution treatment on the microstructure, phase transformation behavior and functional properties of NiTiNb ternary shape memory alloys fabricated via laser powder bed fusion in-situ alloying Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-05 Rui Xi, Hao Jiang, Guichuan Li, Zhihui Zhang, Huiliang Wei, Guoqun Zhao, Jan Van Humbeeck, Xiebin Wang
Post-heat treatment is commonly employed to improve the microstructural homogeneity and enhance the mechanical performances of the additively manufactured metallic materials. In this work, a ternary (NiTi)91Nb9 (at.%) shape memory alloy was produced by laser powder bed fusion (L-PBF) using pre-alloyed NiTi and elemental Nb powders. The effect of solution treatment on the microstructure, phase transformation
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Endowing low fatigue for elastocaloric effect by refined hierarchical microcomposite in additive manufactured NiTiCuCo alloy Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-05 Bo Feng, Helong Liu, Ying Yang, Hui Shen, Yang Ren, Yinong Liu, Lishan Cui, Bingmin Huang, Shijie Hao
NiTiCu-based shape memory alloys have been considered as ideal materials for solid-state refrigeration due to their superb cycling stability for elastocaloric effect. However, the embrittlement and deterioration caused by secondary phase and coarse grains restrict their applications, and it is still challenging since the geometric components are required. Here, bulk NiTiCuCo parts with excellent forming
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High-throughput microfluidic production of carbon capture microcapsules: fundamentals, applications, and perspectives Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-04 Xiangdong Liu, Wei Gao, Yue Lu, Liangyu Wu, Yongping Chen
In the last three decades, carbon dioxide (CO2) emissions have shown a significant increase from various sources. To address this pressing issue, the importance of reducing CO2 emissions has grown, leading to increased attention toward carbon capture, utilization, and storage strategies. Among these strategies, monodisperse microcapsules, produced by using droplet microfluidics, have emerged as promising
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Efficient concentration of trace analyte with ordered hotspot construction for a robust and sensitive SERS platform Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-04 Youdi Hu, Yanlei Hu, Zhenyu Wang, Jiale Yong, Wei Xiong, Dong Wu, Shixiang Xu
Surface-enhanced Raman scattering (SERS) platform, which enables trace analyte detection, has important application prospects. By structuring/modifying the surface of the SERS substrate, analyte in highly diluted solutions can be concentrated into localized active areas for highly sensitive detection. However, subject to the difficulty of the fabrication process, it remains challenging to balance hot-spot
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Improving fatigue properties of normal direction ultrasonic vibration assisted face grinding Inconel 718 by regulating machined surface integrity Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-02 Nianwei Xu, Renke Kang, Bi Zhang, Yuan Zhang, Chenxu Wang, Yan Bao, Zhigang Dong
Fatigue properties are crucial for critical aero-engine components in extreme service environments, which are significantly affected by surface integrity (SI) indexes (especially surface topography, residual stress σ res, and microhardness) after machining processes. Normal-direction ultrasonic vibration-assisted face grinding (ND-UVAFG) has advantages in improving the machinability of Inconel 718
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Control of temperature dependent viscosity for manufacturing of Bi-doped active fiber Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-02 Rui Duan, Jingfei Chen, Hao Ke, Tianxia Wei, Ke Zhang, Xueliang Li, Xu Feng, Qiuju Zheng, Zhixue He, Jianrong Qiu, Shifeng Zhou
Bi-activated photonic materials are promising for various applications in high-capacity telecommunication, tunable laser, and advanced bioimaging and sensing. Although various Bi-doped material candidates have been explored, manufacturing of Bi heavily doped fiber with excellent optical activity remains a long-standing challenge. Herein, a novel viscosity evolutional behavior mediated strategy for
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Performance-control-orientated hybrid metal additive manufacturing technologies: state of the art, challenges, and future trends Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-04-02 Jiming Lv, Yuchen Liang, Xiang Xu, Gang Xu, Hongmei Zhang, Haifei Lu, Kaiyu Luo, Jie Cai, Jinzhong Lu
Metal additive manufacturing (AM) technologies have made significant progress in the basic theoretical field since their invention in the 1970s. However, performance instability during continuous processing, such as thermal history, residual stress accumulation, and columnar grain epitaxial growth, consistently hinders their broad application in standardized industrial production. To overcome these
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Electrochemical anodic oxidation assisted fabrication of memristors Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-28 Shuai-Bin Hua, Tian Jin, Xin Guo
Owing to the advantages of simple structure, low power consumption and high-density integration, memristors or memristive devices are attracting increasing attention in the fields such as next generation non-volatile memories, neuromorphic computation and data encryption. However, the deposition of memristive films often requires expensive equipment, strict vacuum conditions, high energy consumption
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Preparation of single atom catalysts for high sensitive gas sensing Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-28 Xinxin He, Ping Guo, Xuyang An, Yuyang Li, Jiatai Chen, Xingyu Zhang, Lifeng Wang, Mingjin Dai, Chaoliang Tan, Jia Zhang
Single atom catalysts (SACs) have garnered significant attention in the field of catalysis over the past decade due to their exceptional atom utilization efficiency and distinct physical and chemical properties. For the semiconductor-based electrical gas sensor, the core is the catalysis process of target gas molecules on the sensitive materials. In this context, the SACs offer great potential for
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Vibration-assisted vat photopolymerization for pixelated-aliasing-free surface fabrication Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-22 Han Xu, Renzhi Hu, Shuai Chen, Junhong Zhu, Chi Zhou, Yong Chen
Mask image projection-based vat photopolymerization (MIP-VPP) offers advantages like low cost, high resolution, and a wide material range, making it popular in industry and education. Recently, MIP-VPP employing liquid crystal displays (LCDs) has gained traction, increasingly replacing digital micromirror devices, particularly among hobbyists and in educational settings, and is now beginning to be
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Advances of embedded resistive random access memory in industrial manufacturing and its potential applications Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-22 Zijian Wang, Yixian Song, Guobin Zhang, Qi Luo, Kai Xu, Dawei Gao, Bin Yu, Desmond Loke, Shuai Zhong, Yishu Zhang
Embedded memory, which heavily relies on the manufacturing process, has been widely adopted in various industrial applications. As the field of embedded memory continues to evolve, innovative strategies are emerging to enhance performance. Among them, resistive random access memory (RRAM) has gained significant attention due to its numerous advantages over traditional memory devices, including high
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Revolutionizing plasmonic platform via magnetic field-assisted confined ultrafast laser deposition of high-density, uniform, and ultrafine nanoparticle arrays Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-20 Jin Xu, Lingfeng Wang, Peilin Yang, Haoqing Jiang, Huai Zheng, Licong An, Xingtao Liu, Gary J Cheng
The remarkable capabilities of 2D plasmonic surfaces in controlling optical waves have garnered significant attention. However, the challenge of large-scale manufacturing of uniform, well-aligned, and tunable plasmonic surfaces has hindered their industrialization. To address this, we present a groundbreaking tunable plasmonic platform design achieved through magnetic field (MF) assisted ultrafast
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Functional microfluidics: theory, microfabrication, and applications Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-19 Mingzhu Xie, Ziheng Zhan, Yinfeng Li, Junkai Zhao, Ce Zhang, Zhaolong Wang, Zuankai Wang
Microfluidic devices are composed of microchannels with a diameter ranging from ten to a few hundred micrometers. Thus, quite a small (10−9–10−18 l) amount of liquid can be manipulated by such a precise system. In the past three decades, significant progress in materials science, microfabrication, and various applications has boosted the development of promising functional microfluidic devices. In
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Carbon nanotube integrated circuit technology: purification, assembly and integration Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-18 Jianlei Cui, Fengqi Wei, Xuesong Mei
As the manufacturing process of silicon-based integrated circuits (ICs) approaches its physical limit, the quantum effect of silicon-based field-effect transistors (FETs) has become increasingly evident. And the burgeoning carbon-based semiconductor technology has become one of the most disruptive technologies in the post-Moore era. As one-dimensional nanomaterials, carbon nanotubes (CNTs) are far
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3D printed grafts with gradient structures for organized vascular regeneration Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-15 Yuewei Chen, Zhongfei Zou, Tao Fu, Zhuang Li, Zhaojie Zhang, Meng Zhu, Qing Gao, Shaofei Wu, Guosheng Fu, Yong He, Jiayin Fu
Synthetic vascular grafts suitable for small-diameter arteries (<6 mm) are in great need. However, there are still no commercially available small-diameter vascular grafts (SDVGs) in clinical practice due to thrombosis and stenosis after in vivo implantation. When designing SDVGs, many studies emphasized reendothelization but ignored the importance of reconstruction of the smooth muscle layer (SML)
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2D multifunctional devices: from material preparation to device fabrication and neuromorphic applications Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-13 Zhuohui Huang, Yanran Li, Yi Zhang, Jiewei Chen, Jun He, Jie Jiang
Neuromorphic computing systems, which mimic the operation of neurons and synapses in the human brain, are seen as an appealing next-generation computing method due to their strong and efficient computing abilities. Two-dimensional (2D) materials with dangling bond-free surfaces and atomic-level thicknesses have emerged as promising candidates for neuromorphic computing hardware. As a result, 2D neuromorphic
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Fast prototype and rapid construction of three-dimensional and multi-scaled pitcher for controlled drainage by systematic biomimicry Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-11 Tao Shen, Ning Li, Shijie Liu, Cunlong Yu, Chengqi Zhang, Kang Yang, Xingfei Li, Ruochen Fang, Lei Jiang, Zhichao Dong
Biomimetic materials that use natural wisdom to solve practical problems are developing rapidly. The trend for systematic biomimicry is towards in-situ characterization of natural creatures with high spatial resolutions. Furthermore, rapid reconstruction of digital twin models with the same complex features as the prototype is indispensable. However, it faces bottlenecks and limits in fast characterization
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Field-assisted machining of difficult-to-machine materials Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-08 Jianguo Zhang, Zhengding Zheng, Kai Huang, Chuangting Lin, Weiqi Huang, Xiao Chen, Junfeng Xiao, Jianfeng Xu
Difficult-to-machine materials (DMMs) are extensively applied in critical fields such as aviation, semiconductor, biomedicine, and other key fields due to their excellent material properties. However, traditional machining technologies often struggle to achieve ultra-precision with DMMs resulting from poor surface quality and low processing efficiency. In recent years, field-assisted machining (FAM)
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Triboelectric ‘electrostatic tweezers’ for manipulating droplets on lubricated slippery surfaces prepared by femtosecond laser processing Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-07 Jiale Yong, Xinlei Li, Youdi Hu, Yubin Peng, Zilong Cheng, Tianyu Xu, Chaowei Wang, Dong Wu
The use of ‘Electrostatic tweezers’ is a promising tool for droplet manipulation, but it faces many limitations in manipulating droplets on superhydrophobic surfaces. Here, we achieve noncontact and multifunctional droplet manipulation on Nepenthes-inspired lubricated slippery surfaces via triboelectric electrostatic tweezers (TETs). The TET manipulation of droplets on a slippery surface has many advantages
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Pixelated non-volatile programmable photonic integrated circuits with 20-level intermediate states Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-03-05 Wenyu Chen, Shiyuan Liu, Jinlong Zhu
Multi-level programmable photonic integrated circuits (PICs) and optical metasurfaces have gained widespread attention in many fields, such as neuromorphic photonics, optical communications, and quantum information. In this paper, we propose pixelated programmable Si3N4 PICs with record-high 20-level intermediate states at 785 nm wavelength. Such flexibility in phase or amplitude modulation is achieved
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High-performance liquid metal electromagnetic actuator fabricated by femtosecond laser Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-02-21 Yiyu Chen, Hao Wu, Rui Li, Shaojun Jiang, Shuneng Zhou, Zehang Cui, Yuan Tao, Xinyuan Zheng, Qianqian Zhang, Jiawen Li, Guoqiang Li, Dong Wu, Jiaru Chu, Yanlei Hu
Small-scale electromagnetic soft actuators are characterized by a fast response and simple control, holding prospects in the field of soft and miniaturized robotics. The use of liquid metal (LM) to replace a rigid conductor inside soft actuators can reduce the rigidity and enhance the actuation performance and robustness. Despite research efforts, challenges persist in the flexible fabrication of LM
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Recent innovations in laser additive manufacturing of titanium alloys Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-02-21 Jinlong Su, Fulin Jiang, Jie Teng, Lequn Chen, Ming Yan, Guillermo Requena, Lai-Chang Zhang, Y Morris Wang, Ilya V Okulov, Hongmei Zhu, Chaolin Tan
Titanium (Ti) alloys are widely used in high-tech fields like aerospace and biomedical engineering. Laser additive manufacturing (LAM), as an innovative technology, is the key driver for the development of Ti alloys. Despite the significant advancements in LAM of Ti alloys, there remain challenges that need further research and development efforts. To recap the potential of LAM high-performance Ti
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In-situ additive manufacturing of high strength yet ductility titanium composites with gradient layered structure using N2 Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-02-20 Yunmian Xiao, Changhui Song, Zibin Liu, Linqing Liu, Hanxiang Zhou, Di Wang, Yongqiang Yang
It has always been challenging work to reconcile the contradiction between the strength and plasticity of titanium materials. Laser powder bed fusion (LPBF) is a convenient method to fabricate innovative composites including those inspired by gradient layered materials. In this work, we used LPBF to selectively prepare TiN/Ti gradient layered structure (GLSTi) composites by using different N2–Ar ratios
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3D printing in space: from mechanical structures to living tissues Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-02-12 Mao Mao, Zijie Meng, Xinxin Huang, Hui Zhu, Lei Wang, Xiaoyong Tian, Jiankang He, Dichen Li, Bingheng Lu
3D printing stands at the forefront of transforming space exploration, offering unprecedented on-demand and rapid manufacturing capabilities. It adeptly addresses challenges such as mass reduction, intricate component fabrication, and resource constraints. Despite the obstacles posed by microgravity and extreme environments, continual advancements underscore the pivotal role of 3D printing in aerospace
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Damage evolution and removal behaviors of GaN crystals involved in double-grits grinding Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-02-02 Chen Li, Yuxiu Hu, Zongze Wei, Chongjun Wu, Yunfeng Peng, Feihu Zhang, Yanquan Geng
Elucidating the complex interactions between the work material and abrasives during grinding of gallium nitride (GaN) single crystals is an active and challenging research area. In this study, molecular dynamics simulations were performed on double-grits interacted grinding of GaN crystals; and the grinding force, coefficient of friction, stress distribution, plastic damage behaviors, and abrasive
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Design and optimization of fluid lubricated bearings operated with extreme working performances—a comprehensive review Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-02-01 Guohua Zhang, Ming Huang, Gangli Chen, Jiasheng Li, Yang Liu, Jianguo He, Yueqing Zheng, Siwei Tang, Hailong Cui
Fluid lubricated bearings have been widely adopted as support components for high-end equipment in metrology, semiconductor devices, aviation, strategic defense, ultraprecision manufacturing, medical treatment, and power generation. In all these applications, the equipment must deliver extreme working performances such as ultraprecise movement, ultrahigh rotation speed, ultraheavy bearing loads, ultrahigh
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A review on current development of thermophotovoltaic technology in heat recovery Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-30 Shuni Chen, Yanming Guo, Qinghui Pan, Yong Shuai
The burning of fossil fuels in industry results in significant carbon emissions, and the heat generated is often not fully utilized. For high-temperature industries, thermophotovoltaics (TPVs) is an effective method for waste heat recovery. This review covers two aspects of high-efficiency TPV systems and industrial waste heat applications. At the system level, representative results of TPV complete
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Self-propelled Leidenfrost droplets on femtosecond-laser-induced surface with periodic hydrophobicity gradient Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-30 Bohong Li, Lan Jiang, Xiaowei Li, Zhipeng Wang, Peng Yi
The controllable transfer of droplets on the surface of objects has a wide application prospect in the fields of microfluidic devices, fog collection and so on. The Leidenfrost effect can be utilized to significantly reduce motion resistance. However, the use of 3D structures limits the widespread application of self-propulsion based on Leidenfrost droplets in microelectromechanical system. To manipulate
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Recent advances in fabrication and functions of neuromorphic system based on organic field effect transistor Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-29 Yaqian Liu, Minrui Lian, Wei Chen, Huipeng Chen
The development of various artificial electronics and machines would explosively increase the amount of information and data, which need to be processed via in-situ remediation. Bioinspired synapse devices can store and process signals in a parallel way, thus improving fault tolerance and decreasing the power consumption of artificial systems. The organic field effect transistor (OFET) is a promising
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Nontraditional energy-assisted mechanical machining of difficult-to-cut materials and components in aerospace community: a comparative analysis Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-29 Guolong Zhao, Biao Zhao, Wenfeng Ding, Lianjia Xin, Zhiwen Nian, Jianhao Peng, Ning He, Jiuhua Xu
The aerospace community widely uses difficult-to-cut materials, such as titanium alloys, high-temperature alloys, metal/ceramic/polymer matrix composites, hard and brittle materials, and geometrically complex components, such as thin-walled structures, microchannels, and complex surfaces. Mechanical machining is the main material removal process for the vast majority of aerospace components. However
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Review on laser directed energy deposited aluminum alloys Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-23 Tian-Shu Liu, Peng Chen, Feng Qiu, Hong-Yu Yang, Nicholas Tan Yew Jin, Youxiang Chew, Di Wang, Ruidi Li, Qi-Chuan Jiang, Chaolin Tan
Lightweight aluminum (Al) alloys have been widely used in frontier fields like aerospace and automotive industries, which attracts great interest in additive manufacturing (AM) to process high-value Al parts. As a mainstream AM technique, laser-directed energy deposition (LDED) shows good scalability to meet the requirements for large-format component manufacturing and repair. However, LDED Al alloys
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Elliptical vibration chiseling: a novel process for texturing ultra-high-aspect-ratio microstructures on the metallic surface Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-22 Zhiwei Li, Jianfu Zhang, Zhongpeng Zheng, Pingfa Feng, Dingwen Yu, Jianjian Wang
High-aspect-ratio metallic surface microstructures are increasingly demanded in breakthrough applications, such as high-performance heat transfer enhancement and surface plasmon devices. However, the fast and cost-effective fabrication of high-aspect-ratio microstructures on metallic surfaces remains challenging for existing techniques. This study proposes a novel cutting-based process, namely elliptical
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A novel approach of jet polishing for interior surface of small-grooved components using three developed setups Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-18 Qinming Gu, Zhenyu Zhang, Hongxiu Zhou, Jiaxin Yu, Dong Wang, Junyuan Feng, Chunjing Shi, Jianjun Yang, Junfeng Qi
It is a challenge to polish the interior surface of an additively manufactured component with complex structures and groove sizes less than 1 mm. Traditional polishing methods are disabled to polish the component, meanwhile keeping the structure intact. To overcome this challenge, small-grooved components made of aluminum alloy with sizes less than 1 mm were fabricated by a custom-made printer. A novel
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Preparation of MXene-based hybrids and their application in neuromorphic devices Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-12 Zhuohao Xiao, Xiaodong Xiao, Ling Bing Kong, Hongbo Dong, Xiuying Li, Bin He, Shuangchen Ruan, Jianpang Zhai, Kun Zhou, Qin Huang, Liang Chu
The traditional von Neumann computing architecture has relatively-low information processing speed and high power consumption, making it difficult to meet the computing needs of artificial intelligence (AI). Neuromorphic computing systems, with massively parallel computing capability and low power consumption, have been considered as an ideal option for data storage and AI computing in the future.
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A comprehensive review on microchannel heat sinks for electronics cooling Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-11 Zhi-Qiang Yu, Mo-Tong Li, Bing-Yang Cao
The heat generation of electronic devices is increasing dramatically, which causes a serious bottleneck in the thermal management of electronics, and overheating will result in performance deterioration and even device damage. With the development of micro-machining technologies, the microchannel heat sink (MCHS) has become one of the best ways to remove the considerable amount of heat generated by
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Isotropic sintering shrinkage of 3D glass-ceramic nanolattices: backbone preforming and mechanical enhancement Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-08 Nianyao Chai, Yunfan Yue, Xiangyu Chen, Zhongle Zeng, Sheng Li, Xuewen Wang
There is a perpetual pursuit for free-form glasses and ceramics featuring outstanding mechanical properties as well as chemical and thermal resistance. It is a promising idea to shape inorganic materials in three-dimensional (3D) forms to reduce their weight while maintaining high mechanical properties. A popular strategy for the preparation of 3D inorganic materials is to mold the organic–inorganic
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Direct 4D printing of functionally graded hydrogel networks for biodegradable, untethered, and multimorphic soft robots Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-05 Soo Young Cho, Dong Hae Ho, Sae Byeok Jo, Jeong Ho Cho
Recent advances in functionally graded additive manufacturing (FGAM) technology have enabled the seamless hybridization of multiple functionalities in a single structure. Soft robotics can become one of the largest beneficiaries of these advances, through the design of a facile four-dimensional (4D) FGAM process that can grant an intelligent stimuli-responsive mechanical functionality to the printed
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Atomic layer deposition in advanced display technologies: from photoluminescence to encapsulation Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-05 Rong Chen, Kun Cao, Yanwei Wen, Fan Yang, Jian Wang, Xiao Liu, Bin Shan
Driven by the growing demand for next-generation displays, the development of advanced luminescent materials with exceptional photoelectric properties is rapidly accelerating, with such materials including quantum dots and phosphors, etc. Nevertheless, the primary challenge preventing the practical application of these luminescent materials lies in meeting the required durability standards. Atomic
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Alloy design for laser powder bed fusion additive manufacturing: a critical review Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-05 Zhuangzhuang Liu, Qihang Zhou, Xiaokang Liang, Xiebin Wang, Guichuan Li, Kim Vanmeensel, Jianxin Xie
Metal additive manufacturing (AM) has been extensively studied in recent decades. Despite the significant progress achieved in manufacturing complex shapes and structures, challenges such as severe cracking when using existing alloys for laser powder bed fusion (L-PBF) AM have persisted. These challenges arise because commercial alloys are primarily designed for conventional casting or forging processes
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Printability disparities in heterogeneous material combinations via laser directed energy deposition: a comparative study Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-04 Jinsheng Ning, Lida Zhu, Shuhao Wang, Zhichao Yang, Peihua Xu, Pengsheng Xue, Hao Lu, Miao Yu, Yunhang Zhao, Jiachen Li, Susmita Bose, Amit Bandyopadhyay
Additive manufacturing provides achievability for the fabrication of bimetallic and multi-material structures; however, the material compatibility and bondability directly affect the parts’ formability and final quality. It is essential to understand the underlying printability of different material combinations based on an adapted process. Here, the printability disparities of two common and attractive
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Slippery hydrogel with desiccation-tolerant ‘skin’ for high-precision additive manufacturing Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-04 Desheng Liu, Pan Jiang, Yue Hu, Yaozhong Lu, Yixian Wang, Jiayu Wu, Danli Hu, Tao Wu, Xiaolong Wang
Hydrogels inevitably undergo dehydration, structural collapse, and shrinkage deformation due to the uninterrupted evaporation in the atmosphere, thereby losing their flexibility, slipperiness, and manufacturing precision. Here, we propose a novel bioinspired strategy to construct a spontaneously formed ‘skin’ on the slippery hydrogels by incorporating biological stress metabolites trehalose into the
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Fabrication and integration of photonic devices for phase-change memory and neuromorphic computing Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2024-01-04 Wen Zhou, Xueyang Shen, Xiaolong Yang, Jiangjing Wang, Wei Zhang
In the past decade, there has been tremendous progress in integrating chalcogenide phase-change materials (PCMs) on the silicon photonic platform for non-volatile memory to neuromorphic in-memory computing applications. In particular, these non von Neumann computational elements and systems benefit from mass manufacturing of silicon photonic integrated circuits (PICs) on 8-inch wafers using a 130 nm
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Additively manufactured Ti–Ta–Cu alloys for the next-generation load-bearing implants Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-11-17 Amit Bandyopadhyay, Indranath Mitra, Sushant Ciliveri, Jose D Avila, William Dernell, Stuart B Goodman, Susmita Bose
Bacterial colonization of orthopedic implants is one of the leading causes of failure and clinical complexities for load-bearing metallic implants. Topical or systemic administration of antibiotics may not offer the most efficient defense against colonization, especially in the case of secondary infection, leading to surgical removal of implants and in some cases even limbs. In this study, laser powder
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Recent progress in bio-inspired macrostructure array materials with special wettability—from surface engineering to functional applications Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-11-10 Zhongxu Lian, Jianhui Zhou, Wanfei Ren, Faze Chen, Jinkai Xu, Yanling Tian, Huadong Yu
Bio-inspired macrostructure array (MAA, size: submillimeter to millimeter scale) materials with special wettability (MAAMs-SW) have attracted significant research attention due to their outstanding performance in many applications, including oil repellency, liquid/droplet manipulation, anti-icing, heat transfer, water collection, and oil–water separation. In this review, we focus on recent developments
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Near-zero-adhesion-enabled intact wafer-scale resist-transfer printing for high-fidelity nanofabrication on arbitrary substrates Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-11-03 Zhiwen Shu, Bo Feng, Peng Liu, Lei Chen, Huikang Liang, Yiqin Chen, Jianwu Yu, Huigao Duan
There is an urgent need for novel processes that can integrate different functional nanostructures onto specific substrates, so as to meet the fast-growing need for broad applications in nanoelectronics, nanophotonics, and flexible optoelectronics. Existing direct-lithography methods are difficult to use on flexible, nonplanar, and biocompatible surfaces. Therefore, this fabrication is usually accomplished
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Towards a new avenue for rapid synthesis of electrocatalytic electrodes via laser-induced hydrothermal reaction for water splitting Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-11-01 Yang Sha, Menghui Zhu, Kun Huang, Yang Zhang, Francis Moissinac, Zhizhou Zhang, Dongxu Cheng, Paul Mativenga, Zhu Liu
Electrochemical production of hydrogen from water requires the development of electrocatalysts that are active, stable, and low-cost for water splitting. To address these challenges, researchers are increasingly exploring binder-free electrocatalytic integrated electrodes (IEs) as an alternative to conventional powder-based electrode preparation methods, for the former is highly desirable to improve
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Toward understanding the microstructure characteristics, phase selection and magnetic properties of laser additive manufactured Nd-Fe-B permanent magnets Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-27 Bo Yao, Nan Kang, Xiangyu Li, Dou Li, Mohamed EL Mansori, Jing Chen, Haiou Yang, Hua Tan, Xin Lin
Nd-Fe-B permanent magnets play a crucial role in energy conversion and electronic devices. The essential magnetic properties of Nd-Fe-B magnets, particularly coercivity and remanent magnetization, are significantly influenced by the phase characteristics and microstructure. In this work, Nd-Fe-B magnets were manufactured using vacuum induction melting (VIM), laser directed energy deposition (LDED)
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Oxygen vacancy boosting Fenton reaction in bone scaffold towards fighting bacterial infection Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-20 Cijun Shuai, Xiaoxin Shi, Feng Yang, Haifeng Tian, Pei Feng
Bacterial infection is a major issue after artificial bone transplantation due to the absence of antibacterial function of bone scaffold, which seriously causes the transplant failure and even amputation in severe cases. In this study, oxygen vacancy (OV) defects Fe-doped TiO2 (OV-FeTiO2) nanoparticles were synthesized by nano TiO2 and Fe3O4 via high-energy ball milling, which was then incorporated
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Influence of heat treatment on microstructure, mechanical and corrosion behavior of WE43 alloy fabricated by laser-beam powder bed fusion Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-17 Chenrong Ling, Qiang Li, Zhe Zhang, Youwen Yang, Wenhao Zhou, Wenlong Chen, Zhi Dong, Chunrong Pan, Cijun Shuai
Magnesium (Mg) alloys are considered to be a new generation of revolutionary medical metals. Laser-beam powder bed fusion (PBF-LB) is suitable for fabricating metal implants with personalized and complicated structures. However, the as-built part usually exhibits undesirable microstructure and unsatisfactory performance. In this work, WE43 parts were firstly fabricated by PBF-LB and then subjected
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A brief review on the recent development of phonon engineering and manipulation at nanoscales Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-13 Siqi Xie, Hongxin Zhu, Xing Zhang, Haidong Wang
Phonons are the quantum mechanical descriptions of vibrational modes that manifest themselves in many physical properties of condensed matter systems. As the size of electronic devices continues to decrease below mean free paths of acoustic phonons, the engineering of phonon spectra at the nanoscale becomes an important topic. Phonon manipulation allows for active control and management of heat flow
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Engineering vascularized organotypic tissues via module assembly Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-11 Zhenzhen Zhou, Changru Liu, Yuting Guo, Yuan Pang, Wei Sun
Adequate vascularization is a critical determinant for the successful construction and clinical implementation of complex organotypic tissue models. Currently, low cell and vessel density and insufficient vascular maturation make vascularized organotypic tissue construction difficult, greatly limiting its use in tissue engineering and regenerative medicine. To address these limitations, recent studies
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Device design principles and bioelectronic applications for flexible organic electrochemical transistors Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-11 Lin Gao, Mengge Wu, Xinge Yu, Junsheng Yu
Organic electrochemical transistors (OECTs) exhibit significant potential for applications in healthcare and human-machine interfaces, due to their tunable synthesis, facile deposition, and excellent biocompatibility. Expanding OECTs to the flexible devices will significantly facilitate stable contact with the skin and enable more possible bioelectronic applications. In this work, we summarize the
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Energy beam-based direct and assisted polishing techniques for diamond: A review Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-10 Zhuo Li, Feng Jiang, Zhengyi Jiang, Zige Tian, Tian Qiu, Tao Zhang, Qiuling Wen, Xizhao Lu, Jing Lu, Hui Huang
Diamond is a highly valuable material with diverse industrial applications, particularly in the fields of semiconductor, optics, and high-power electronics. However, its high hardness and chemical stability make it difficult to realize high-efficiency and ultra-low damage machining of diamond. To address these challenges, several polishing methods have been developed for both single crystal diamond
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Characterization, preparation, and reuse of metallic powders for laser powder bed fusion: a review Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-09 Xiaoyu Sun, Minan Chen, Tingting Liu, Kai Zhang, Huiliang Wei, Zhiguang Zhu, Wenhe Liao
Laser powder bed fusion (L-PBF) has attracted significant attention in both the industry and academic fields since its inception, providing unprecedented advantages to fabricate complex-shaped metallic components. The printing quality and performance of L-PBF alloys are influenced by numerous variables consisting of feedstock powders, manufacturing process, and post-treatment. As the starting materials
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Advances in memristor based artificial neuron fabrication-materials, models, and applications Int. J. Extrem. Manuf. (IF 14.7) Pub Date : 2023-10-09 Jingyao Bian, Zhiyong Liu, Ye Tao, Zhongqiang Wang, Xiaoning Zhao, Ya Lin, Haiyang Xu, Yichun Liu
Spiking neural network (SNN), widely known as the third-generation neural network, has been frequently investigated due to its excellent spatiotemporal information processing capability, high biological plausibility, and low energy consumption characteristics. Analogous to the working mechanism of human brain, the SNN system transmits information through the spiking action of neurons. Therefore, artificial