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3. Ultra-conformable Liquid Metal Particle Monolayer on Air/water Interface for Substrate-free E-tattoo

Author

Li, Fali, Lei, Wenjuan, Wang, Yuwei, Lu, Xingjian, Li, Shengbin, Xu, Feng, He, Zidong, Liu, Jinyun, Yang, Huali, Wu, Yuanzhao, Shang, Jie, Liu, Yiwei, and Li, Run-Wei

Subjects
Physics - Applied Physics, Computer Science - Human-Computer Interaction
Abstract

Gallium-based liquid metal is getting increased attention in conformal flexible electronics for its high electrical conductivity, intrinsic deformability and biocompatibility. A series of flexible devices are developed based on the micro-particles of liquid metal. But it is still challenging to fabricate conformal liquid metal film with a large area and high uniformity. Interfacial self-assembly is a competitive candidate method. Traditional interfacial self-assembly methods have difficulties assembling liquid metal particles because the floating state of the high-density microparticles could be easily disturbed by gravity. Here, we realized the multi-size universal self-assembly (MUS) for liquid metal particles with various diameters (0~500{\mu}m). By introducing a simple z-axis undisturbed interfacial material releasing strategy, the interference of gravitational energy on the stability of floating particles is avoided. Benefits from this, the ultra-conformable monolayer film, with large area (>100 cm2) and high floating yield (50%~90%), can be fabricated by liquid metal particles. Furthermore, the monolayer can be conformally transferred to any interesting complex surface such as human skin and plant leaf, to fabricate substrate-free flexible devices. Without interference from the mechanical response of traditional substrate, the liquid metal e-tattoo is more user-friendly and can realize feel-less continuous monitoring.

Published
2023

21. Auditing Australian Construction Industry’s Dependency on China to Improve Construction Supply Chain Resilience

Author

Liu, Jinyun, Chan, Toong Khuan, Tortorella, Guilherme Luz, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Guo, Hongling, editor, Fang, Dongping, editor, Lu, Weisheng, editor, and Peng, Yi, editor

Published
2022
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32. Wearable Magnetic Field Sensor with Low Detection Limit and Wide Operation Range for Electronic Skin Applications.

Author

Li, Shengbin, Wu, Yuanzhao, Asghar, Waqas, Li, Fali, Zhang, Ye, He, Zidong, Liu, Jinyun, Wang, Yuwei, Liao, Meiyong, Shang, Jie, Ren, Long, Du, Yi, Makarov, Denys, Liu, Yiwei, and Li, Run‐Wei

Subjects
GIANT magnetoimpedance effect, MAGNETIC fields, FLEXIBLE structures, ELECTRONIC equipment, MAGNETOELECTRONICS, MAGNETIC sensors
Abstract

Flexible electronic devices extended abilities of humans to perceive their environment conveniently and comfortably. Among them, flexible magnetic field sensors are crucial to detect changes in the external magnetic field. State‐of‐the‐art flexible magnetoelectronics do not exhibit low detection limit and large working range simultaneously, which limits their application potential. Herein, a flexible magnetic field sensor possessing a low detection limit of 22 nT and wide sensing range from 22 nT up to 400 mT is reported. With the detection range of seven orders of magnitude in magnetic field sensor constitutes at least one order of magnitude improvement over current flexible magnetic field sensor technologies. The sensor is designed as a cantilever beam structure accommodating a flexible permanent magnetic composite and an amorphous magnetic wire enabling sensitivity to low magnetic fields. To detect high fields, the anisotropy of the giant magnetoimpedance effect of amorphous magnetic wires to the magnetic field direction is explored. Benefiting from mechanical flexibility of sensor and its broad detection range, its application potential for smart wearables targeting geomagnetic navigation, touchless interactivity, rehabilitation appliances, and safety interfaces providing warnings of exposure to high magnetic fields are explored. [ABSTRACT FROM AUTHOR]

Published
2024
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35. Multiparametric Brain Hemodynamics Imaging Using a Combined Ultrafast Ultrasound and Photoacoustic System.

Author

Chen, Haoyang, Mirg, Shubham, Gaddale, Prameth, Agrawal, Sumit, Li, Menghan, Nguyen, Van, Xu, Tianbao, Li, Qiong, Liu, Jinyun, Tu, Wenyu, Liu, Xiao, Drew, Patrick J., Zhang, Nanyin, Gluckman, Bruce J., and Kothapalli, Sri‐Rajasekhar

Subjects
ACOUSTIC imaging, BRAIN imaging, ULTRASONIC imaging, CEREBRAL circulation, MULTISPECTRAL imaging, HIGH resolution imaging
Abstract

Studying brain‐wide hemodynamic responses to different stimuli at high spatiotemporal resolutions can help gain new insights into the mechanisms of neuro‐ diseases and ‐disorders. Nonetheless, this task is challenging, primarily due to the complexity of neurovascular coupling, which encompasses interdependent hemodynamic parameters including cerebral blood volume (CBV), cerebral blood flow (CBF), and cerebral oxygen saturation (SO2). The current brain imaging technologies exhibit inherent limitations in resolution, sensitivity, and imaging depth, restricting their capacity to comprehensively capture the intricacies of cerebral functions. To address this, a multimodal functional ultrasound and photoacoustic (fUSPA) imaging platform is reported, which integrates ultrafast ultrasound and multispectral photoacoustic imaging methods in a compact head‐mountable device, to quantitatively map individual dynamics of CBV, CBF, and SO2 as well as contrast agent enhanced brain imaging at high spatiotemporal resolutions. Following systematic characterization, the fUSPA system is applied to study brain‐wide cerebrovascular reactivity (CVR) at single‐vessel resolution via relative changes in CBV, CBF, and SO2 in response to hypercapnia stimulation. These results show that cortical veins and arteries exhibit differences in CVR in the stimulated state and consistent anti‐correlation in CBV oscillations during the resting state, demonstrating the multiparametric fUSPA system's unique capabilities in investigating complex mechanisms of brain functions. [ABSTRACT FROM AUTHOR]

Published
2024
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36. A high-performance magnesium/lithium hybrid-ion battery using a hollow multi-layered NiS/Co3S4/carbon cathode and an all-phenyl-complex-based electrolyte.

Author

Liu, Jiamin, Zhou, Ting, Shen, Yun, Li, Lixing, Zhu, Yajun, and Liu, Jinyun

Subjects
POTENTIAL energy, ENERGY storage, LITHIUM cells, ELECTROLYTES, MAGNESIUM
Abstract

Magnesium–lithium hybrid batteries (MLHBs) using a dual-ion electrolyte and safe Mg anode have promising potential for high-performance energy storage. Here, we develop an MLHB constructed of a hollow multi-layered NiS/Co3S4/carbon cathode and an all-phenyl-complex/lithium chloride (APC-LiCl) electrolyte. The hollow multi-layered structure and carbon matrix accommodate volumetric expansion and facilitate electrolyte penetration. The APC-LiCl electrolyte displays a stable electrochemical window. The MLHB shows a high specific capacity of 398 mA h g−1 after 100 cycles at 0.2 A g−1, and a stable capacity at 1.0 A g−1 after cycling 500 times. Moreover, stable rate performance and temperature tolerance are achievable. These findings would enable this design to be promising for developing other hybrid battery systems. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Highly Sensitive Pressure Sensor Based on Elastic Conductive Microspheres

Author

Li, Zhangling, primary, Guan, Tong, additional, Zhang, Wuxu, additional, Liu, Jinyun, additional, Xiang, Ziyin, additional, Gao, Zhiyi, additional, He, Jing, additional, Ding, Jun, additional, Bian, Baoru, additional, Yi, Xiaohui, additional, Wu, Yuanzhao, additional, Liu, Yiwei, additional, Shang, Jie, additional, and Li, Runwei, additional

Published
2024
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41. SQLE-mediated squalene metabolism is critical for mitochondrial biogenesis and tumor development in K-ras-driven cancer

Author

Liu, Jinyun, primary, Pan, Junchen, additional, Liu, Rui, additional, Zhang, Huiqin, additional, Lu, Wenhua, additional, Peng, Hongyu, additional, Yang, Jing, additional, Zhang, Qianrui, additional, Yu, Tiantian, additional, Huo, Bitao, additional, Wei, Xiaoying, additional, Zhou, Lin, additional, Liang, Haixi, additional, Hu, Yumin, additional, Wen, Shijun, additional, Xia, Xiaojun, additional, and Huang, Peng, additional

Published
2024
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45. Magnetic force imaging and handling of cancer cells on the nanoscale

Author

Liu, Jinyun

Subjects
magnetic force microscope, magnetic nanoparticles, magnetic force imaging, nanomanipulation, cancer cells, C130 Cell Biology
Abstract

Cancer treatment has become one of the top priorities in health. Great efforts have been devoted to the diagnosis and therapy of cancers. Culturing cells with drugs is a common method used to investigate cancer therapy in experiments. However, this method has limitations in cancer treatment because of the lack of capabilities of handling cells, targeting specific cells and measuring the nanoscale changes in cell structures. Magnetic nanoparticles (MNPs) and magnetic force microscopes (MFMs) have been used to study biological samples due to their advantages in tracing, manipulating and measuring, which has motivated to research the method for implanting MNPs into cancer cells, to target the cancer cells and to measure their changes during the treatment. Research reported in this thesis focuses on magnetic force imaging and handling of targeted cancer cells on the nanoscale for possible new cancer therapies. A new differential MFM imaging method and a new compensation MFM imaging method were developed in this research to improve the MFM imaging quality. The former reverses the magnetized direction of probe from upward to downward and the latter scans the samples with three scanning directions of 0°, 45° and 90°. With these methods, the obtained MFM images achieve a high resolution, SNR, image contrast and accuracy. A pair of innovative MNPs picking up method and MNPs releasing method were developed in this research to achieve flexible MNPs picking up and releasing. The picking up method handles the magnetic tip following a helical structure as the capture path when approaching to the target MNPs. The MNPs releasing method uses a biaxiably-oriented polypropylene (BOPP) film together with a magnet allowing MNPs to separate from the MFM tip surface. With these methods, the target MNPs can be picked up by the MFM tip and released from the tip surface successfully. This research discovered, for the first time in the world to the author knowledge, the differences in morphological features (height, length, width and roughness) and mechanical properties (adhesive force and Young‟s modulus) between multinuclear and mononuclear colon cancer cells after treating the cells with fullerenol. This discovery provides guidance to the selection of cells for target treatment. The results indicate that the mononuclear SW480 cells are more sensitive to fullerenol than the multinuclear SW480 cells and the multinuclear SW480 cells exhibit a stronger drug-resistance than the mononuclear SW480 cells. A new MNPs implantation method was developed in this research, which enables the FITC-MNPs functioned tip to insert into cells so that MNPs are implanted into the target cells. Fluorescence microscope images show that the FITC-MNPs are released into the cells successfully. Cells being treated with MNPs (Cell-MNPs) manipulation III methods are explored by magnet and controllable electromagnets to manipulate the target cancer cells. The results show that the cell-MNPs have magnetic force manipulated capability and they can be manipulated to have the leftward, rightward, upward and downward flexibilities.

Published
2017

46. Optical study of the antiferromagnetic ordered state in electron-overdoped Ca0.77Nd0.23FeAs2

Author

Yang, Run, Xu, Bing, Dai, Yaomin, Zhang, Wei, Liu, Jinyun, Qiu, Ziyang, and Qiu, Xianggang

Subjects
Condensed Matter - Superconductivity
Abstract

In Ca1-xRExFeAs2 (RE= rare earth), an antiferromagnetic (AFM) phase as well as a structural transition has been reported, even in the electron-overdoped regime. Here we investigated the temperature-dependent in-plane optical spectroscopy of overdoped Ca0.77Nd0.23FeAs2. Upon entering the AFM state, we found an abrupt reduction of low-frequency (500-2 000 cm-1) spectral weight in the optical conductivity. In sharp contrast to the parent compounds of 122 system, where spin-density-wave gaps have been clearly observed in the AFM state, a gap signature is absent in Ca0.77Nd0.23FeAs2. This may be a consequence of the poor nesting condition between hole and electron pockets. However, a spectral weight analysis shows that the reduced spectral weight at low frequency is transferred to the high frequency range (> 4 000 cm-1), pointing to a localization effect. These observations suggest that the AFM order in Ca0.77Nd0.23FeAs2 is most likely to originate from a localized nature rather than Fermi surface nesting., Comment: 6 pages, 6 figures

Published
2016
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49. Electroplating lithium transition metal oxides.

Author

Zhang, Huigang, Ning, Hailong, Busbee, John, Shen, Zihan, Kiggins, Chadd, Hua, Yuyan, Eaves, Janna, Davis, Jerome, Shi, Tan, Shao, Yu-Tsun, Zuo, Jian-Min, Hong, Xuhao, Chan, Yanbin, Wang, Shuangbao, Wang, Peng, Sun, Pengcheng, Xu, Sheng, Liu, Jinyun, and Braun, Paul V

Subjects
cathode, electroplating, flexible batteries, lithium ion batteries, lithium transition metal oxides
Abstract

Materials synthesis often provides opportunities for innovation. We demonstrate a general low-temperature (260°C) molten salt electrodeposition approach to directly electroplate the important lithium-ion (Li-ion) battery cathode materials LiCoO2, LiMn2O4, and Al-doped LiCoO2. The crystallinities and electrochemical capacities of the electroplated oxides are comparable to those of the powders synthesized at much higher temperatures (700° to 1000°C). This new growth method significantly broadens the scope of battery form factors and functionalities, enabling a variety of highly desirable battery properties, including high energy, high power, and unprecedented electrode flexibility.

Published
2017

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