scholarly journals Polycarbazole and Its Derivatives: Synthesis and Applications. A Review of the Last 10 Years

Polymers ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2227
Author(s):  
Fadila Bekkar ◽  
Faiza Bettahar ◽  
Isabel Moreno ◽  
Rachid Meghabar ◽  
Mohammed Hamadouche ◽  
...  
Keyword(s):  
Driving Force ◽  
Conductive Polymers ◽  
Electrochemical Polymerization ◽  
Electronic Devices ◽  
Light Emitting ◽  
Wearable Electronic ◽  
Synthetic Routes ◽  
Increasing Demand ◽  
Synthetic Methodologies ◽  
Wearable Electronic Devices

Polycarbazole and its derivatives have been extensively used for the last three decades, although the interest in these materials briefly decreased. However, the increasing demand for conductive polymers for several applications such as light emitting diodes (OLEDs), capacitators or memory devices, among others, has renewed the interest in carbazole-based materials. In this review, the synthetic routes used for the development of carbazole-based polymers have been summarized, reviewing the main synthetic methodologies, namely chemical and electrochemical polymerization. In addition, the applications reported in the last decade for carbazole derivatives are analysed. The emergence of flexible and wearable electronic devices as a part of the internet of the things could be an important driving force to renew the interest on carbazole-based materials, being conductive polymers capable to respond adequately to requirement of these devices.

scholarly journals Intrinsically Elastic Organic Semiconductors (IEOSs)

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6130
Author(s):  
Fei Liu ◽  
Xueling Hou ◽  
Ben-Lin Hu ◽  
Run-Wei Li
Keyword(s):  
Organic Synthesis ◽  
Organic Semiconductors ◽  
Structural Engineering ◽  
Electronic Devices ◽  
Synthetic Methods ◽  
Chemical Structures ◽  
Mechanical And Electrical Properties ◽  
Wearable Electronic ◽  
Synthetic Routes ◽  
Wearable Electronic Devices

Elastic semiconductors are becoming more and more important to the development of flexible wearable electronic devices, which can be prepared by structural engineering design, blending, and the intrinsic elastification of organic semiconductors (intrinsically elastic organic semiconductor, IEOS). Compared with the elastic semiconductors prepared by structural engineering and blending, the IEOS prepared by organic synthesis has attracted numerous attentions for its solution processability and highly tunable chemical structures. For IEOSs, reasonable designs of synthetic routes and methods are the basis for realizing good mechanical and electrical properties. This brief review begins with a concise introduction of elastic semiconductors, then follows with several synthetic methods of IEOSs, and concludes the characteristics of each method, which provides guidance for the synthesis of IEOSs in the future. Furthermore, the properties of IEOSs are involved from the aspects of electrical, mechanical properties, and the applications of the IEOSs in elastic electronic devices. Finally, the challenge and an outlook which IEOSs are facing are presented in conclusion.

Flexible, sandwich-like CNTs/NiCo2O4 hybrid paper electrodes for all-solid state supercapacitors

2017 ◽  
Vol 5 (12) ◽  
pp. 5886-5894 ◽  
Author(s):  
Yongjia Zheng ◽  
Zhiqiang Lin ◽  
Wenjun Chen ◽  
Binghao Liang ◽  
Huiwei Du ◽  
...  
Keyword(s):  
Solid State ◽  
Storage Systems ◽  
Electronic Devices ◽  
Flexible Supercapacitors ◽  
Wearable Electronic ◽  
Increasing Demand ◽  
Wearable Electronic Devices

With the increasing demand for compact storage systems for portable and wearable electronic devices, flexible supercapacitors with high volumetric performance have attracted considerable attention.

Characteristics of Discharge Currents Measured through Body-Attached Metal for Modeling ESD from Wearable Electronic Devices

2016 ◽  
Vol E99.B (1) ◽  
pp. 186-191 ◽  
Author(s):  
Takeshi ISHIDA ◽  
Fengchao XIAO ◽  
Yoshio KAMI ◽  
Osamu FUJIWARA ◽  
Shuichi NITTA
Keyword(s):  
Electronic Devices ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

scholarly journals Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1500
Author(s):  
Songrui Wei ◽  
Xiaoqi Liao ◽  
Han Zhang ◽  
Jianhua Pang ◽  
Yan Zhou
Keyword(s):  
Recent Progress ◽  
Electronic Devices ◽  
Basic Research ◽  
Research Direction ◽  
Magnetic Sensor ◽  
Magnetic Sensors ◽  
Future Research ◽  
Calibration Methods ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Fluxgate magnetic sensors are especially important in detecting weak magnetic fields. The mechanism of a fluxgate magnetic sensor is based on Faraday’s law of electromagnetic induction. The structure of a fluxgate magnetic sensor mainly consists of excitation windings, core and sensing windings, similar to the structure of a transformer. To date, they have been applied to many fields such as geophysics and astro-observations, wearable electronic devices and non-destructive testing. In this review, we report the recent progress in both the basic research and applications of fluxgate magnetic sensors, especially in the past two years. Regarding the basic research, we focus on the progress in lowering the noise, better calibration methods and increasing the sensitivity. Concerning applications, we introduce recent work about fluxgate magnetometers on spacecraft, unmanned aerial vehicles, wearable electronic devices and defect detection in coiled tubing. Based on the above work, we hope that we can have a clearer prospect about the future research direction of fluxgate magnetic sensor.

scholarly journals Foldable and washable textile-based OLEDs with a multi-functional near-room-temperature encapsulation layer for smart e-textiles

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
So Yeong Jeong ◽  
Hye Rin Shim ◽  
Yunha Na ◽  
Ki Suk Kang ◽  
Yongmin Jeon ◽  
...  
Keyword(s):  
Room Temperature ◽  
Wearable Electronics ◽  
Ambient Conditions ◽  
Light Emitting ◽  
Stable Operating ◽  
Mechanical Durability ◽  
Potential Applications ◽  
Wearable Electronic ◽  
Data Signal ◽  
Wearable Electronic Devices

AbstractWearable electronic devices are being developed because of their wide potential applications and user convenience. Among them, wearable organic light emitting diodes (OLEDs) play an important role in visualizing the data signal processed in wearable electronics to humans. In this study, textile-based OLEDs were fabricated and their practical utility was demonstrated. The textile-based OLEDs exhibited a stable operating lifetime under ambient conditions, enough mechanical durability to endure the deformation by the movement of humans, and washability for maintaining its optoelectronic properties even in water condition such as rain, sweat, or washing. In this study, the main technology used to realize this textile-based OLED was multi-functional near-room-temperature encapsulation. The outstanding impermeability of TiO2 film deposited at near-room-temperature was demonstrated. The internal residual stress in the encapsulation layer was controlled, and the device was capped by highly cross-linked hydrophobic polymer film, providing a highly impermeable, mechanically flexible, and waterproof encapsulation.

Engineering flexible carbon nanofibers concatenated MOFs-derived hollow octahedral CoFe2O4 as anode materials for enhanced lithium storage

2021 ◽  
Author(s):  
Fangfang Xue ◽  
Yangyang Li ◽  
Chen Liu ◽  
Zhigang Zhang ◽  
Jun Lin ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Anode Materials ◽  
Electrode Materials ◽  
Electronic Devices ◽  
High Capacity ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Excellent Mechanical Property ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Constructing suitable electrode materials with high capacity and excellent mechanical property is indispensable for flexible lithium-ion batteries (LIBs) to satisfy the growing flexible and wearable electronic devices. Herein, a necklace-like...

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.

Mortality of people over working age in the context of COVID-19 pandemic

2022 ◽  
pp. 961-968
Author(s):  
Т.П. Сабгайда ◽  
А.Н. Эделева
Keyword(s):  
Information Technologies ◽  
Electronic Devices ◽  
Social Assistance ◽  
Small Scale ◽  
New Information ◽  
Exogenous Stress ◽  
Working Age ◽  
Wearable Electronic ◽  
Wearable Electronic Devices ◽  
Death Causes

Проанализирована смертность лиц старше трудоспособного возраста (женщины 55+ и мужчины 60+) в условиях пандемии COVID-19 для определения потенциальной возможности её предотвращения. Использовали информацию базы данных РФС-ЕМИАС Москвы за 2019, 2020 и 2021 гг. (за периоды до 15 июня). Сделано заключение, что на фоне более корректного учета причин смерти в 2021 г., связанных с инфицированием вирусом SARS-CoV-2, вклад психических расстройств и болезней эндокринной системы в структуру причин смерти лиц старше трудоспособного возраста без учета случаев смерти от COVID-19 превышает показатели 2019 г. Рост смертности от заболеваний этих классов в значительной степени является следствием экзогенного стресса, связанного с пандемией, изоляцией лиц 65 лет и старше в начале пандемии, снижением эффективности их медико-социальной поддержки. Недостатки в организации социальной помощи лицам старших возрастных групп, слабое внедрение новых информационных технологий и носимых электронных устройств в практическую работу здравоохранения, малые масштабы общественных инициатив в области социальной помощи привели к потерям населения, которые могли бы быть предотвращены в период пандемии. The mortality of people over working age (women 55+ and men 60+) was analyzed in the context of COVID-19 pandemic in order to determine the potential for its prevention. The information from the Moscow mortality database for 2019, 2020 and 2021 (up to June 15) was used. Against the background of more correct accounting of death causes associated with SARS-CoV-2 virus infection in 2021, the contributions of mental disorders and endocrine diseases to the structure of death causes (excluding deaths from COVID-19) for people over working age are more than in 2019. The increase in mortality from diseases of these classes is largely a consequence of exogenous stress associated with a pandemic, isolation of people older 64 years and a decrease in the effectiveness of medical care. It was concluded that indirect losses from COVID-19 include avoidable mortality of elderly caused by shortcomings in organization of social assistance for them, the weak introduction of new information technologies and wearable electronic devices into the practical work of health care, small scale of public initiatives in the field of social assistance.

Sign in / Sign up

Export Citation Format

Share Document