scholarly journals Research on High-Performance Antennas Based on Graphene Materials

2021 ◽  
Vol 2138 (1) ◽  
pp. 012006
Author(s):  
Yangkun Song ◽  
Chaofan Huang
Keyword(s):  
Frequency Band ◽  
High Performance ◽  
Rapid Development ◽  
High Sensitivity ◽  
Development Trend ◽  
Flexible Material ◽  
Flexible Antennas ◽  
Wearable Electronic ◽  
Flexible Antenna ◽  
Wearable Electronic Devices

Abstract With the rapid development of the Internet of Things and wearable electronic devices, China is about to enter the 5G era. The current materials have been difficult to meet the production needs of flexible antennas working in the 5G frequency band. Flexible antenna sensors have received widespread attention because they can detect signal changes caused by antenna deformation. In recent years, miniaturization and high sensitivity have been the development trend of flexible antennas. However, traditional metal materials have disadvantages such as high density, easy corrosion, and poor bending stability, Can no longer meet the further development of 5G frequency band flexible antennas. Therefore, it is necessary to find a light and flexible material to replace the traditional metal material. Graphene has excellent flexibility, conductivity, and stability, once discovered, it has aroused widespread concern among scientists. This article mainly conducts certain research on graphene material, hoping to contribute to the development of 5G in China.

A flexible pressure sensor based on rGO/polyaniline wrapped sponge with tunable sensitivity for human motion detection

Nanoscale ◽  
2018 ◽  
Vol 10 (21) ◽  
pp. 10033-10040 ◽  
Author(s):  
Gang Ge ◽  
Yichen Cai ◽  
Qiuchun Dong ◽  
Yizhou Zhang ◽  
Jinjun Shao ◽  
...  
Keyword(s):  
Motion Detection ◽  
High Performance ◽  
Rapid Development ◽  
High Sensitivity ◽  
Human Motion ◽  
The Internet ◽  
Human Motion Detection ◽  
Wearable Electronic ◽  
Flexible Pressure Sensor ◽  
The Internet Of Things

High-performance stretchable and wearable electronic skins (E-skins) with high sensitivity and a large sensing range are urgently required with the rapid development of the Internet of things and artificial intelligence.

scholarly journals Textile-Based Triboelectric Nanogenerators for Wearable Self-Powered Microsystems

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 158
Author(s):  
Peng Huang ◽  
Dan-Liang Wen ◽  
Yu Qiu ◽  
Ming-Hong Yang ◽  
Cheng Tu ◽  
...  
Keyword(s):  
Rapid Development ◽  
Electronic Devices ◽  
Quantitative Relationship ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Integrated Microsystems ◽  
Wearable Electronic ◽  
Self Powered ◽  
Representative Work ◽  
Wearable Electronic Devices

In recent years, wearable electronic devices have made considerable progress thanks to the rapid development of the Internet of Things. However, even though some of them have preliminarily achieved miniaturization and wearability, the drawbacks of frequent charging and physical rigidity of conventional lithium batteries, which are currently the most commonly used power source of wearable electronic devices, have become technical bottlenecks that need to be broken through urgently. In order to address the above challenges, the technology based on triboelectric effect, i.e., triboelectric nanogenerator (TENG), is proposed to harvest energy from ambient environment and considered as one of the most promising methods to integrate with functional electronic devices to form wearable self-powered microsystems. Benefited from excellent flexibility, high output performance, no materials limitation, and a quantitative relationship between environmental stimulation inputs and corresponding electrical outputs, TENGs present great advantages in wearable energy harvesting, active sensing, and driving actuators. Furthermore, combined with the superiorities of TENGs and fabrics, textile-based TENGs (T-TENGs) possess remarkable breathability and better non-planar surface adaptability, which are more conducive to the integrated wearable electronic devices and attract considerable attention. Herein, for the purpose of advancing the development of wearable electronic devices, this article reviews the recent development in materials for the construction of T-TENGs and methods for the enhancement of electrical output performance. More importantly, this article mainly focuses on the recent representative work, in which T-TENGs-based active sensors, T-TENGs-based self-driven actuators, and T-TENGs-based self-powered microsystems are studied. In addition, this paper summarizes the critical challenges and future opportunities of T-TENG-based wearable integrated microsystems.

scholarly journals Hierarchical Ni(OH)2/Cu(OH)2 interwoven nanosheets in situ grown on Ni–Cu–P alloy plated cotton fabric for flexible high-performance energy storage

2020 ◽  
Vol 2 (8) ◽  
pp. 3358-3366
Author(s):  
Man Zhou ◽  
Zhihang Jin ◽  
Lifang Su ◽  
Kai Li ◽  
Hong Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cotton Fabric ◽  
High Performance ◽  
Mechanical Performance ◽  
Electronic Devices ◽  
High Conductivity ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Flexible Ni(OH)2/Cu(OH)2@Ni–Cu–P alloy coated on cotton fabric with high conductivity and excellent mechanical performance is available for future smart and wearable electronic devices.

scholarly journals Recent Advances in Synthesis and Properties of Nitrated-Pyrazoles Based Energetic Compounds

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3475 ◽  
Author(s):  
Shijie Zhang ◽  
Zhenguo Gao ◽  
Di Lan ◽  
Qian Jia ◽  
Ning Liu ◽  
...  
Keyword(s):  
Energetic Materials ◽  
High Performance ◽  
High Efficiency ◽  
Low Cost ◽  
Rapid Development ◽  
Development Trend ◽  
High Heat ◽  
High Energy ◽  
Heat Of Formation ◽  
Energetic Compounds

Nitrated-pyrazole-based energetic compounds have attracted wide publicity in the field of energetic materials (EMs) due to their high heat of formation, high density, tailored thermal stability, and detonation performance. Many nitrated-pyrazole-based energetic compounds have been developed to meet the increasing demands of high power, low sensitivity, and eco-friendly environment, and they have good applications in explosives, propellants, and pyrotechnics. Continuous and growing efforts have been committed to promote the rapid development of nitrated-pyrazole-based EMs in the last decade, especially through large amounts of Chinese research. Some of the ultimate aims of nitrated-pyrazole-based materials are to develop potential candidates of castable explosives, explore novel insensitive high energy materials, search for low cost synthesis strategies, high efficiency, and green environmental protection, and further widen the applications of EMs. This review article aims to present the recent processes in the synthesis and physical and explosive performances of the nitrated-pyrazole-based Ems, including monopyrazoles with nitro, bispyrazoles with nitro, nitropyrazolo[4,3-c]pyrazoles, and their derivatives, and to comb the development trend of these compounds. This review intends to prompt fresh concepts for designing prominent high-performance nitropyrazole-based EMs.

High-Performance Embedded Technologies Improve Performance of Measuring and Testing Systems

2013 ◽  
Vol 718-720 ◽  
pp. 820-824
Author(s):  
Ju Guang Li ◽  
Hua Zhang
Keyword(s):  
Operating System ◽  
Power Consumption ◽  
High Performance ◽  
Rapid Development ◽  
Development Trend ◽  
Current Situation ◽  
Embedded Operating System ◽  
Improve Performance ◽  
Embedded Microprocessor ◽  
Testing Instruments

This paper introduces current situation and development trend of measuring and testing systems and impact on traditional measuring and testing instruments and devices caused by rapid development of embedded technologies represented by high-performance embedded microprocessor and embedded operating system technologies. To combine newly developed high-performance embedded technologies with traditional measuring and testing technologies can greatly improve performance, cost, power consumption and volume indexes of measuring and testing instruments, enabling them to obtain incomparable advantages over traditional instruments.

Rationally designed Hierarchical C/TiO2/Ti multilayer Core-sheath Wires for High-performance Energy Storage Devices

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Cao ◽  
Yun Gong ◽  
Wenhao Wang ◽  
Mingzhou Chen ◽  
Junhe Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electronic Devices ◽  
Energy Storage Devices ◽  
Power Sources ◽  
Storage Devices ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Fiber-shaped supercapacitors (FSCs) are promising power sources for wearable electronic devices due to their small size, excellent flexibility and deformability. The performance of FSCs has been severely affected by the...

scholarly journals Progress of carbon-based electrocatalysts for flexible zinc-air batteries in the past 5 years: recent strategies for design, synthesis and performance optimization

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yuan Qin ◽  
Zihao Ou ◽  
Chuanlan Xu ◽  
Zubang Zhang ◽  
Junjie Yi ◽  
...  
Keyword(s):  
Performance Optimization ◽  
Active Sites ◽  
Rapid Development ◽  
Electronic Devices ◽  
Flexible Substrates ◽  
Energy Devices ◽  
Wearable Electronic ◽  
Wearable Electronic Devices ◽  
Zinc Air Batteries ◽  
Carbon Based

AbstractThe increasing popularity of wearable electronic devices has led to the rapid development of flexible energy conversion systems. Flexible rechargeable zinc-air batteries (ZABs) with high theoretical energy densities demonstrate significant potential as next-generation flexible energy devices that can be applied in wearable electronic products. The design of highly efficient and air-stable cathodes that can electrochemically catalyze both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are highly desirable but challenging. Flexible carbon-based catalysts for ORR/OER catalysis can be broadly categorized into two types: (i) self-supporting catalysts based on the in situ modification of flexible substrates; (ii) non-self-supporting catalysts based on surface coatings of flexible substrates. Methods used to optimize the catalytic performance include doping with atoms and regulation of the electronic structure and coordination environment. This review summarizes the most recently proposed strategies for the synthesis of designer carbon-based electrocatalysts and the optimization of their electrocatalytic performances in air electrodes. And we significantly focus on the analysis of the inherent active sites and their electrocatalytic mechanisms when applied as flexible ZABs catalysts. The findings of this review can assist in the design of more valuable carbon-based air electrodes and their corresponding flexible ZABs for application in wearable electronic devices.

scholarly journals NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Rajesh Kumar
Keyword(s):  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Performance ◽  
Mixed Oxides ◽  
Rapid Development ◽  
High Sensitivity ◽  
Electrochemical Sensing ◽  
Ion Diffusion ◽  
Factors Affecting ◽  
Electrochemical Biosensing

AbstractNon-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo2O4 mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area, high permeability, short electron, and ion diffusion pathways. Because of the rapid development of non-enzyme biosensors, the current state of methods for synthesis of pure and composite/hybrid NiCo2O4 materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed herein. Comparative analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo2O4 nano-/microstructures than other morphologies. Better biosensing efficiency of NiCo2O4 as compared to corresponding individual metal oxides, viz. NiO and Co3O4, is attributed to the close intrinsic-state redox couples of Ni3+/Ni2+ (0.58 V/0.49 V) and Co3+/Co2+ (0.53 V/0.51 V). Biosensing performance of NiCo2O4 is also significantly improved by making the composites of NiCo2O4 with conducting carbonaceous materials like graphene, reduced graphene oxide, carbon nanotubes (single and multi-walled), carbon nanofibers; conducting polymers like polypyrrole (PPy), polyaniline (PANI); metal oxides NiO, Co3O4, SnO2, MnO2; and metals like Au, Pd, etc. Various factors affecting the morphologies and biosensing parameters of the nano-/micro-structured NiCo2O4 are also highlighted. Finally, some drawbacks and future perspectives related to this promising field are outlined.

Nature-inspired hierarchical materials for sensing and energy storage applications

2021 ◽  
Author(s):  
Chunping Xu ◽  
Alain R. Puente-Santiago ◽  
Daily Rodríguez-Padrón ◽  
Mario J. Muñoz-Batista ◽  
Md Ariful Ahsan ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Materials Science ◽  
Electronic Devices ◽  
Hierarchical Materials ◽  
Science Community ◽  
Wearable Electronic ◽  
Hierarchical Architectures ◽  
Energy Storage Applications ◽  
Wearable Electronic Devices

Nature-inspired hierarchical architectures have recently drawn enormous interest in the materials science community, being considered as promising materials for the development of high-performance wearable electronic devices.

Ionic liquid electrodeposition of Ge nanostructures on freestanding Ni-nanocone arrays for Li-ion battery

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19596-19600 ◽  
Author(s):  
Jian Hao ◽  
Xin Liu ◽  
Xusong Liu ◽  
Xiaoxu Liu ◽  
Na Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Performance ◽  
Electronic Devices ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Wearable Electronic ◽  
Li Ion ◽  
Wearable Electronic Devices

With the growing demand for portable and wearable electronic devices, it is imperative to develop high-performance Li-ion batteries with long lifetimes.

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