Shiwo Ta

Towards an Improved Understanding of the Evolution of the Size Distribution of Ultrafine Nanoparticles Produced by a Rapidly Quenched Vapor Source

Guannan Yang, Junyu He, Jin Tong, Hengwei Luan et autres

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Gradient-Pattern Micro-Grooved Wicks Fabricated by the Ultraviolet Nanosecond Laser Method and Their Enhanced Capillary Performance

Guanghan Huang, Jiawei Liao, Chao Fan, Shuang Liu et autres

Capillary-gradient wicks can achieve fast or directional liquid transport, but they face fabrication challenges by traditional methods in terms of precise patterns. Laser processing is a potential solution due to its high pattern accuracy, but there are a few studies on laser-processed …

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Synthesis of Imidazole-Compound-Coated Copper Nanoparticles with Promising Antioxidant and Sintering Properties

Yu Zhang, Xianchong Yu, Ziyuan Chen, Song Wu et autres

In this study, we present a facile method for preparing oxidation-resistant Cu nanoparticles through a liquid-phase reduction with imidazole compounds (imidazole, 2-methylimidazole, 2-phenylimidazole, and benzimidazole) that serve as protective and dispersing agents. Through a complexation reaction between Cu atoms, the imidazole compounds …

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Nonvolatile memory based on the extension–retraction of bent ferroelastic domain walls: A phase field simulation

K. Liu, Hongjia Song, Xiangli Zhong, Jinbin Wang et autres

Herein, a prototype nonvolatile bent ferroelastic domain wall (DW) memory based on extension–retraction of DWs in a top electrode/bent ferroelastic DWs/bottom electrode architecture is demonstrated and the effects of mechanical condition, electrical condition, and the material parameter on ferroelastic DWs in PbTiO3 …

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Elucidation of the capillarity-promoted sintering of silver nanoparticles produced by a spark ablation vapor source

Yu Zhang, Junyu He, Jin Tong, Haiqi Lai et autres

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A LC Resonator Based High-pass Filter Embedded in LTCC Substrate

Jingtao Zeng, Kun Huang, Shiwo Ta

In this paper, a compact high-pass filter is proposed, which is fabricated by LTCC (low-temperature co-fired ceramic) substrate. The design has 3dB insertion loss and 9500 MHz cut-off frequency, which is used in wireless communication system. By using LTCC fabrication technology, the …

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Crystal structure, vibration characteristics and microwave dielectric properties of low loss MgMo1-xWxO4 solid solution ceramics

Chang Feng, Xia Feng, Tong Feng, Xiangli Yan et autres

Solid-phase method was used to synthesize MgMo1-xWxO4 (x = 0–0.15) ceramics. The influences of substitution Mo6+ with W6+ on crystal structure, vibration characteristics and microwave dielectric properties of MgMo1-xWxO4 ceramics were comprehensively studied. X-Ray diffraction illustrated all samples exhibit single-phase monoclinic wolframite …

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Temperature-stable crystal structure and microwave dielectric properties of BaSi2O5-Ba3V2O8 composite ceramics

Dawei Wang, Lifeng Ding, Ben Heng, Haikui Zhu et autres

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The effect of tetragonality on direct current (dc) bias characteristics of BaTiO3-based MLCCs

Yuyang Wang, Lei Zhang, Xiong Huang, Rong Sun et autres

The influence of tetragonality on direct-current (dc) bias characteristics of BaTiO3-based multi-layer ceramic capacitors (MLCCs) are systematically investigated. It is shown that, with the similar grain size, the permittivity of specimen was enhanced as the magnitude of saturation polarization (Ps) decreased. Thus, …

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The effects of pressure, temperature, and depth/diameter ratio on the microvia filling performance of Ag-coated Cu micro-nanoparticles for advanced electronic packaging

Guannan Yang, Shaogen Luo, Bo Luo, Yan Zuo et autres

Conductive fillers made from metal nanoparticles offer many advantages for the fabrication of a variety of electronic devices, but when they have a porous structure, their poor conductivity limits their adoption in many applications. In this study, an Ag-coated Cu micro-nanoparticle paste …

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Effect of Ag coating on the oxidation resistance, sintering properties, and migration resistance of Cu particles

Guannan Yang, Pengyu Wang, Yu Liu, Shuzhou Lu et autres

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Void and solder joint detection for chip resistors based on X-ray images and deep neural networks

Shuiling Pang, Meiyun Chen, Shiwo Ta, Heng Wu et autres

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