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201 results on '"Yu, Yanhao"'

6. Bioinspired carbon nanotube–based nanofluidic ionic transistor with ultrahigh switching capabilities for logic circuits

Author

Liu, Wenchao, primary, Mei, Tingting, additional, Cao, Zhouwen, additional, Li, Chun, additional, Wu, Yitian, additional, Wang, Li, additional, Xu, Guoheng, additional, Chen, Yuanxia, additional, Zhou, You, additional, Wang, Senyao, additional, Xue, Yahui, additional, Yu, Yanhao, additional, Kong, Xiang-Yu, additional, Chen, Ruotian, additional, Tu, Bin, additional, and Xiao, Kai, additional

Published
2024
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7. A universal packaging substrate for mechanically stable assembly of stretchable electronics.

Author

Shao, Yan, Yan, Jianfeng, Zhi, Yinglin, Li, Chun, Li, Qingxian, Wang, Kaimin, Xia, Rui, Xiang, Xinyue, Liu, Liqian, Chen, Guoli, Zhang, Hanxue, Cai, Daohang, Wang, Haochuan, Cheng, Xing, Yang, Canhui, Ren, Fuzeng, and Yu, Yanhao

Abstract

Stretchable electronics commonly assemble multiple material modules with varied bulk moduli and surface chemistry on one packaging substrate. Preventing the strain-induced delamination between the module and the substrate has been a critical challenge. Here we develop a packaging substrate that delivers mechanically stable module/substrate interfaces for a broad range of stiff and stretchable modules with varied surface chemistries. The key design of the substrate was to introduce module-specific stretchability and universal adhesiveness by regionally tuning the bulk molecular mobility and surface molecular polarity of a near-hermetic elastic polymer matrix. The packaging substrate can customize the deformation of different modules while avoiding delamination upon stretching up to 600%. Based on this substrate, we fabricated a fully stretchable bioelectronic device that can serve as a respiration sensor or an electric generator with an in vivo lifetime of 10 weeks. This substrate could be a versatile platform for device assembly. Preventing the strain-induced delamination between the module and the substrate has been a critical challenge. The authors developed a stretchable packaging substrate that enables stable module/substrate interfaces under large deformation, preventing the interfacial delamination of stretchable electronics. [ABSTRACT FROM AUTHOR]

Published
2024
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12. Ultrathin Flexible Encapsulation Materials Based on Al 2 O 3 /Alucone Nanolaminates for Improved Electrical Stability of Silicon Nanomembrane-Based MOS Capacitors.

Author

Wang, Zhuofan, Lu, Hongliang, Zhang, Yuming, Liu, Chen, Zhang, Haonan, and Yu, Yanhao

Subjects
ALUMINUM oxide, METAL oxide semiconductor capacitors, METAL oxide semiconductor field-effect transistors, STRAINS & stresses (Mechanics), CAPACITORS, NANOSILICON, MODULATION-doped field-effect transistors, INDIUM gallium zinc oxide
Abstract

Ultrathin flexible encapsulation (UFE) using multilayered films has prospects for practical applications, such as implantable and wearable electronics. However, existing investigations of the effect of mechanical bending strains on electrical properties after the encapsulation procedure provide insufficient information for improving the electrical stability of ultrathin silicon nanomembrane (Si NM)-based metal oxide semiconductor capacitors (MOSCAPs). Here, we used atomic layer deposition and molecular layer deposition to generate 3.5 dyads of alternating 11 nm Al2O3 and 3.5 nm aluminum alkoxide (alucone) nanolaminates on flexible Si NM-based MOSCAPs. Moreover, we bent the MOSCAPs inwardly to radii of 85 and 110.5 mm and outwardly to radii of 77.5 and 38.5 mm. Subsequently, we tested the unbent and bent MOSCAPs to determine the effect of strain on various electrical parameters, namely the maximum capacitance, minimum capacitance, gate leakage current density, hysteresis voltage, effective oxide charge, oxide trapped charge, interface trap density, and frequency dispersion. The comparison of encapsulated and unencapsulated MOSCAPs on these critical parameters at bending strains indicated that Al2O3/alucone nanolaminates stabilized the electrical and interfacial characteristics of the Si NM-based MOSCAPs. These results highlight that ultrathin Al2O3/alucone nanolaminates are promising encapsulation materials for prolonging the operational lifetimes of flexible Si NM-based metal oxide semiconductor field-effect transistors. [ABSTRACT FROM AUTHOR]

Published
2024
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22. Whole-genome duplication reshaped adaptive evolution in a relict plant species, Cyclocarya paliurus

Author

Qu, Yinquan, primary, Shang, Xulan, additional, Zeng, Ziyan, additional, Yu, Yanhao, additional, Bian, Guoliang, additional, Wang, Wenling, additional, Liu, Li, additional, Tian, Li, additional, Zhang, Shengcheng, additional, Wang, Qian, additional, Xie, Dejin, additional, Chen, Xuequn, additional, Liao, Zhenyang, additional, Wang, Yibin, additional, Qin, Jian, additional, Yang, Wanxia, additional, Sun, Caowen, additional, Fu, Xiangxiang, additional, Zhang, Xingtan, additional, and Fang, Shengzuo, additional

Published
2022
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35. uPTI: uniaxial permittivity tensor imaging of intrinsic density and anisotropy

Author

Yeh, Li-Hao, primary, Ivanov, Ivan E., additional, Byrum, Janie R., additional, Chhun, Bryant B., additional, Guo, Syuan-Ming, additional, Foltz, Cameron, additional, Hashemi, Ezzat, additional, Pérez-Bermejo, Juan A., additional, Wang, Huijun, additional, Yu, Yanhao, additional, Kazansky, Peter G., additional, Conklin, Bruce R., additional, Han, May H., additional, and Mehta, Shalin B., additional

Published
2020
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41. Ferrofluids containing Fe3O4 nanoparticles in solidified photoresist carrier

Author

Xin Chunmei, YU Yanhao, Shi Qing, Chao, Zhang Xiaogang, Guan Wei, Xu Ying, and Wang Gong

Subjects
Ferrofluid, Materials science, Nanotechnology, Field strength, 02 engineering and technology, General Chemistry, Photoresist, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Magnetic field, Condensed Matter::Soft Condensed Matter, Physics::Fluid Dynamics, chemistry.chemical_compound, Pulmonary surfactant, chemistry, Chemical engineering, Oleylamine, Magnetic nanoparticles, Irradiation, Physics::Chemical Physics, 0210 nano-technology
Abstract

Ferrofluids, formed by magnetic nanoparticles uniformly dispersed in a liquid carrier, respond to an external magnetic field, which enable the fluid’s position by applying a magnetic field. Here, ferrofluids composed of Fe3O4 nanoparticles with oleic acid and oleylamine as the surfactant and photoresist, respectively, were prepared. Under an external magnetic field, the movement and the position of ferrofluids and the injection of the fluids into complex shapes were easily achieved. The ferrofluid surfaces were distorted under the magnetic field, and the surface structue was controlled by the applied field strength. Using a photoresist as the liquid carrier, it was possible to solidify the ferrofluids by UV irradiation. The shape and the position of the solid superparamagnetic nanoparticles/polymer composites were also determined by the external magnetic field.

Published
2016

46. Implanted Battery-Free Direct-Current Micro-Power Supply from in Vivo Breath Energy Harvesting

Author

Li, Jun, primary, Kang, Lei, additional, Long, Yin, additional, Wei, Hao, additional, Yu, Yanhao, additional, Wang, Yizhan, additional, Ferreira, Carolina A., additional, Yao, Guang, additional, Zhang, Ziyi, additional, Carlos, Corey, additional, German, Lazarus, additional, Lan, Xiaoli, additional, Cai, Weibo, additional, and Wang, Xudong, additional

Published
2018
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49. Tailored TiO2 Protection Layer Enabled Efficient and Stable Microdome Structured p‐GaAs Photoelectrochemical Cathodes.

Author

Cao, Shiyao, Kang, Zhuo, Yu, Yanhao, Du, Junli, German, Lazarus, Li, Jun, Yan, Xiaoqin, Wang, Xudong, and Zhang, Yue

Subjects
PHOTOCATHODES, ATOMIC layer deposition, CATHODES, COMPOUND semiconductors
Abstract

Group III–V compound semiconductors are a promising group of materials for photoelectrochemical (PEC) applications. In this work, a metal assisted wet etching approach is adapted to acquiring a large‐area patterned microdome structure on p‐GaAs surface. In addition, atomic layer deposition is used to deposit a TiO2 protection layer with controlled thickness and crystallinity. Based on a PEC photocathode design, the optimal configuration achieves a photocurrent of −5 mA cm−2 under −0.8 V versus Ag/AgCl in a neutral pH electrolyte. The TiO2 coating with a particular degree of crystallization deposited via controlled temperature demonstrates a superior stability over amorphous coating, enabling a remarkably stable operation, for as long as 60 h. The enhanced charge separation induced by favorable band alignment between GaAs and TiO2 contributes simultaneously to the elevated solar conversion efficiency. This approach provides a promising solution to further development of group III–V compounds and other photoelectrodes with high efficiency and excellent durability for solar fuel generation. [ABSTRACT FROM AUTHOR]

Published
2020
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