Zhiyuan Liu
Nanyang Technological University
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Publication
Featured researches published by Zhiyuan Liu.
Advanced Materials | 2015
Dianpeng Qi; Zhiyuan Liu; Yan Liu; Wan Ru Leow; Bowen Zhu; Hui Yang; Jiancan Yu; Wei Wang; Hua Wang; Shengyan Yin; Xiaodong Chen
Highly stretchable microsupercapacitors with stable electrochemical performance are fabricated. Their excellent stretchable and electrochemical performance relies on the suspended wavy structures of graphene microribbons. This avoids the detachment and cracks of the electrode materials. In addition, it ensures the electrode fingers keep a relatively constant distance so the stability of the microsupercapacitors can be enhanced.
Advanced Materials | 2015
Zhiyuan Liu; Dianpeng Qi; Peizhi Guo; Yan Liu; Bowen Zhu; Hui Yang; Yaqing Liu; Bin Li; Chenguang Zhang; Jiancan Yu; Bo Liedberg; Xiaodong Chen
High-gauge-factor stretchable strain sensors are developed by utilizing a new strategy of thickness-gradient films with high durability, and high uniaxial/isotropic stretchability based on the self-pinning effect of SWCNTs. The monitoring of detailed damping vibration modes driven by weak sound based on such sensors is demonstrated, making a solid step toward real applications.
Advanced Materials | 2017
Dianpeng Qi; Yan Liu; Zhiyuan Liu; Li Zhang; Xiaodong Chen
The rapid development of integrated electronics and the boom in miniaturized and portable devices have increased the demand for miniaturized and on-chip energy storage units. Currently thin-film batteries or microsized batteries are commercially available for miniaturized devices. However, they still suffer from several limitations, such as short lifetime, low power density, and complex architecture, which limit their integration. Supercapacitors can surmount all these limitations. Particularly for micro-supercapacitors with planar architectures, due to their unique design of the in-plane electrode finger arrays, they possess the merits of easy fabrication and integration into on-chip miniaturized electronics. Here, the focus is on the different strategies to design electrode finger arrays and the material engineering of in-plane micro-supercapacitors. It is expected that the advances in micro-supercapacitors with in-plane architectures will offer new opportunities for the miniaturization and integration of energy-storage units for portable devices and on-chip electronics.
Advanced Materials | 2016
Bowen Zhu; Hong Wang; Yaqing Liu; Dianpeng Qi; Zhiyuan Liu; Hua Wang; Jiancan Yu; Matthew Sherburne; Zhaohui Wang; Xiaodong Chen
Skin-inspired haptic-memory devices, which can retain pressure information after the removel of external pressure by virtue of the nonvolatile nature of the memory devices, are achieved. The rise of haptic-memory devices will allow for mimicry of human sensory memory, opening new avenues for the design of next-generation high-performance sensing devices and systems.
Advanced Materials | 2015
Dianpeng Qi; Zhiyuan Liu; Mei Yu; Yan Liu; Yuxin Tang; Junhui Lv; Yuchun Li; Jun Wei; Bo Liedberg; Zhe Yu; Xiaodong Chen
Rationally designed sinusoidal gold nanobelts are fabricated as stretchable electrodes, and they do not show obvious change of resistance under large deformation after 10,000 cyclic stretching/relaxing processes. As a proof of concept, they are successfully used to record intracranial electroencephalogram or electrocorticogram signals from rats.
Advanced Materials | 2016
Hui Yang; Dianpeng Qi; Zhiyuan Liu; Bevita K. Chandran; Ting Wang; Jiancan Yu; Xiaodong Chen
A soft thermal sensor with mechanical adaptability is fabricated by the combination of single-wall carbon nanotubes with carboxyl groups and self-healing polymers. This study demonstrates that this soft sensor has excellent thermal response and mechanical adaptability. It shows tremendous promise for improving the service life of soft artificial-intelligence robots and protecting thermally sensitive electronics from the risk of damage by high temperature.
Advanced Materials | 2016
Pingqiang Cai; Michael Layani; Wan Ru Leow; Shahrouz Amini; Zhiyuan Liu; Dianpeng Qi; Benhui Hu; Yun-Long Wu; Ali Miserez; Shlomo Magdassi; Xiaodong Chen
A platform of mechanotactic hybrids is established by projecting lateral gradients of apparent interfacial stiffness onto the planar surface of a compliant hydrogel layer using an underlying rigid substrate with microstructures inherited from 3D printed molds. Using this platform, the mechanistic coupling of epithelial migration with the stiffness of the extracellular matrix (ECM) is found to be independent of the interfacial compositional and topographical cues.
Advanced Materials | 2015
Hui Yang; Zhiyuan Liu; Bevita K. Chandran; Jiyang Deng; Jiancan Yu; Dianpeng Qi; Wenlong Li; Yuxin Tang; Chenguang Zhang; Xiaodong Chen
Thermal self-protected intelligent electrochemical storage devices are fabricated using a reversible sol-gel transition of the electrolyte, which can decrease the specific capacitance and increase and enable temperature-dependent charging and discharging rates in the device. This work represents proof of a simple and useful concept, which shows tremendous promise for the safe and controlled power delivery in electrochemical devices.
Advanced Materials | 2017
Zhiyuan Liu; Xiaotian Wang; Dianpeng Qi; Cai Xu; Jiancan Yu; Yaqing Liu; Ying Jiang; Bo Liedberg; Xiaodong Chen
High-adhesion stretchable electrodes are fabricated by utilizing a novel nanopile interlocking strategy. Nanopiles significantly enhance adhesion and redistribute the strain in the film, achieving high stretchability. The nanopile electrodes enable simultaneous monitoring of electromyography signals and mechanical deformations. This study opens up a new perspective of achieving stretchability and high adhesion for stretchable electronics.
Angewandte Chemie | 2016
Yaqing Liu; Hong Wang; Wenxiong Shi; Weina Zhang; Jiancan Yu; Bevita K. Chandran; Chenlong Cui; Bowen Zhu; Zhiyuan Liu; Bin Li; Cai Xu; Zhiling Xu; Shuzhou Li; Wei Huang; Fengwei Huo; Xiaodong Chen
Metal-organic frameworks (MOFs) have drawn increasing attentions as promising candidates for functional devices. Herein, we present MOF films in constructing memory devices with alcohol mediated resistance switching property, where the resistance state is controlled by applying alcohol vapors to achieve multilevel information storage. The ordered packing mode and the hydrogen bonding system of the guest molecules adsorbed in MOF crystals are shown to be the reason for the alcohol mediated electrical switching. This chemically mediated memory device can be a candidate in achieving environment-responsive devices and exhibits potential applications in wearable information storage systems.