Ubiquitous clean and sustainable energy-driven self-rechargeable batteries realized by and used in organic electronics

2022 ◽  
Author(s):  
Bai Sun ◽  
Yuning Li
Keyword(s):  
Organic Electronics ◽  
Sustainable Energy ◽  
Rechargeable Batteries ◽  
Manufacturing Cost ◽  
Light Weight ◽  
Wearable Electronics

Organic electronics have the advantages of low manufacturing cost, light weight, good flexibility, and good conformity to different surfaces. They are ideal for many emerging applications such as wearable electronics,...

scholarly journals Temperature Sensors Based on Organic Field-Effect Transistors

Chemosensors ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 12
Author(s):  
John Polena ◽  
Daniel Afzal ◽  
Jenner H. L. Ngai ◽  
Yuning Li
Keyword(s):  
Organic Semiconductors ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Temperature Sensors ◽  
Precise Determination ◽  
Research Progress ◽  
Manufacturing Cost ◽  
Wearable Electronics ◽  
Organic Field Effect Transistors ◽  
Sensing Element

The rapid growth of wearable electronics, Internet of Things, smart packaging, and advanced healthcare technologies demand a large number of flexible, thin, lightweight, and ultralow-cost sensors. The accurate and precise determination of temperature in a narrow range (~0–50 °C) around ambient temperatures and near-body temperatures is critical for most of these applications. Temperature sensors based on organic field-effect transistors (OFETs) have the advantages of low manufacturing cost, excellent mechanical flexibility, easy integration with other devices, low cross-sensitivity, and multi-stimuli detectability and, therefore, are very suitable for the above applications. This article provides a timely overview of research progress in the development of OFET-based temperature sensors. First, the working mechanism of OFETs, the fundamental theories of charge transport in organic semiconductors, and common types of OFET temperature sensors based on the sensing element are briefly introduced. Next, notable advances in the development of OFET temperature sensors using small-molecule and polymer semiconductors are discussed separately. Finally, the progress of OFET temperature sensors is summarized, and the challenges associated with OFET temperature sensors and the perspectives of research directions in this field are presented.

scholarly journals PDMS Microfabrication and Design for Microfluidics and Sustainable Energy Application: Review

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1350
Author(s):  
Lin Lin ◽  
Chen-Kuei Chung
Keyword(s):  
Process Integration ◽  
Material Selection ◽  
Sustainable Energy ◽  
Mechanical Energy ◽  
Hydrophobic Surface ◽  
Triboelectric Nanogenerator ◽  
Wearable Electronics ◽  
Practical Applications ◽  
Hydrophobic Recovery ◽  
Optical Examination

The polydimethylsiloxane (PDMS) is popular for wide application in various fields of microfluidics, microneedles, biology, medicine, chemistry, optics, electronics, architecture, and emerging sustainable energy due to the intrinsic non-toxic, transparent, flexible, stretchable, biocompatible, hydrophobic, insulating, and negative triboelectric properties that meet different requirements. For example, the flexibility, biocompatibility, non-toxicity, good stability, and high transparency make PDMS a good candidate for the material selection of microfluidics, microneedles, biomedical, and chemistry microchips as well as for optical examination and wearable electronics. However, the hydrophobic surface and post-surface-treatment hydrophobic recovery impede the development of self-driven capillary microchips. How to develop a long-term hydrophilicity treatment for PDMS is crucial for capillary-driven microfluidics-based application. The dual-tone PDMS-to-PDMS casting for concave-and-convex microstructure without stiction is important for simplifying the process integration. The emerging triboelectric nanogenerator (TENG) uses the transparent flexible PDMS as the high negative triboelectric material to make friction with metals or other positive-triboelectric material for harvesting sustainably mechanical energy. The morphology of PDMS is related to TENG performance. This review will address the above issues in terms of PDMS microfabrication and design for the efficient micromixer, microreactor, capillary pump, microneedles, and TENG for more practical applications in the future.

scholarly journals Woven Fabric Triboelectric Nanogenerator for Biomotion Energy Harvesting and as Self-Powered Gait-Recognizing Socks

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4119
Author(s):  
Chaoyu Chen ◽  
Lei Zhang ◽  
Wenbo Ding ◽  
Lijun Chen ◽  
Jinkang Liu ◽  
...  
Keyword(s):  
Low Cost ◽  
Rechargeable Batteries ◽  
Woven Fabric ◽  
Future Research ◽  
Triboelectric Nanogenerator ◽  
Wearable Electronics ◽  
Long Time ◽  
Environmental Pollution Problem ◽  
Self Powered ◽  
High Flexibility

In recent years, rapid advancements have developed in multifunctional and wearable electronics, which call for more lightweight, flexible energy sources. However, traditional disposable batteries and rechargeable batteries are not very suitable because of their bulky appearance, limited capacity, low flexibility, and environmental pollution problem. Here, by applying a mature manufacturing technology that has existed in the textile field for a long time, a woven fabric triboelectric nanogenerator (WF-TENG) with a thinner structure that can be mass-fabricated with low cost, perfect stability, and high flexibility is designed and reported. Due to the good intrinsic quality of TENGs, the maximum voltage of this WF-TENG can easily reach 250 V under a pressure of 3.5 kPa and a tapping frequency of 0.33 Hz. Because of the stable plain-woven structure, the output voltage can remain relatively stable even after the WF-TENG has been working for about 5 h continuously, clearly demonstrating its robustness and practical value. Moreover, good sensitivity endows this WF-TENG with the capability of being applied as self-powered sensors, such as a self-powered smart real-time gait-recognizing sock. This WF-TENG shows us a simple and effective method to fabricate a wearable textile product with functional ability, which is very meaningful for future research.

scholarly journals Design and Analysis of a New Space Telescopic Mast

2018 ◽  
Vol 175 ◽  
pp. 02020
Author(s):  
Zhao Yang ◽  
Yong Xiao ◽  
Lipeng Wang
Keyword(s):  
Structural Design ◽  
Theoretical Calculations ◽  
Large Mass ◽  
Manufacturing Cost ◽  
Light Weight ◽  
Motion Simulation ◽  
Single Section ◽  
Screw Length ◽  
Adams Software ◽  
New Space

The space telescopic mast has the characteristics of high rigidity, strong bearing capacity and simple deployment principle. Aiming at the shortcomings of large mass and limited screw length in the existing telescopic mast, a spiral climbing-driven telescopic mast was designed, and the structural design and kinematic analysis were studied. The verification results of the motion simulation through ADAMS software are consistent with theoretical calculations. The new telescopic mast has the characteristics of light weight, low manufacturing cost, and unrestricted length of single-section stretching.

scholarly journals Carbon black functionalized stretchable conductive fabrics for wearable heating applications

RSC Advances ◽  
2017 ◽  
Vol 7 (31) ◽  
pp. 19174-19180 ◽  
Author(s):  
Lakshitha R. Pahalagedara ◽  
Induni W. Siriwardane ◽  
Nadeeka D. Tissera ◽  
Ruchira N. Wijesena ◽  
K. M. Nalin de Silva
Keyword(s):  
Carbon Black ◽  
Light Weight ◽  
Wearable Electronics ◽  
Electrically Conductive

There is an increasing interest on robust electrically conductive textiles with light weight and flexibility to meet the applications in wearable electronics.

scholarly journals Microstructural and Mechanical Analysis of Sintered Powdered Aluminium Composites

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Rajesh Kumar Behera ◽  
B. P. Samal ◽  
S. C. Panigrahi ◽  
K. K. Muduli
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Mechanical Analysis ◽  
Manufacturing Cost ◽  
Light Weight ◽  
Powder Metallurgy Technique ◽  
Present Material ◽  
Aluminium Matrix Composite ◽  
The Matrix ◽  
Xrd Patterns

The present material world needs strong research studies for producing varieties of composite materials which have light weight and high strength with better performances. This leads to the introduction of materials through powder metallurgy technique. The main objective is to discover an aluminium matrix composite having enhanced characteristic performances and properties beyond the currently available materials. The current study has been carried out to develop an attractive composite having high strength, light weight, easy machinability, appreciable density, and low manufacturing cost. Aluminium powders of 99.55% purity and 325 mesh sizes are mixed with alloying metals such as copper, magnesium, silicon, and silicon carbide powders in a precisely controlled quantity. The result was found with better mechanical properties, and the XRD patterns were studied in the matrix at different intensities, showing the interfacial bonding of elements gives rise to increase in strength.

Flexible Antennas for Wearable Technologies

2018 ◽  
pp. 364-402 ◽  
Author(s):  
Amal Afyf ◽  
Bellarbi Larbi ◽  
Fatima Riouch ◽  
Mohamed Adel Sennouni ◽  
Yaakoubi Nourdin
Keyword(s):  
Manufacturing Cost ◽  
Flexible Substrates ◽  
Light Weight ◽  
Wearable Technologies ◽  
The Third ◽  
Wearable Antennas ◽  
Flexible Antennas ◽  
Scientific Papers ◽  
The Subject ◽  
Number Of Publications

Having the merits of being light-weight, energy efficient, in addition to low manufacturing cost, reduced fabrication complexity, and the availability of inexpensive flexible substrates, flexible and wearable technology is being established as an appealing alternative to the conventional electronics technologies which are based on rigid substrates. Furthermore, wearable antennas have been a topic of interest for more than the past decade, and hundreds of scientific papers can be found on the subject. This large number of publications asks for some classification in order to get an overview of the trends and challenges. To this aim, an overview of antennas for wearable technologies is proposed. This chapter is organized into three major sections. In the first part, a detailed review of wearable antennas is presented. The second part of this project deals with the flexible antennas parameters and families. Materials and fabrication methods are discussed in the third part. Wearables advantages, disadvantage and challenges are summarized in the last section.

scholarly journals Reactive Inkjet Printing of Graphene Based Flexible Circuits and Radio Frequency Antennas

2021 ◽  
Author(s):  
Song-Wei Lv ◽  
Siyuan Ye ◽  
Chunling Chen ◽  
Yi Zhang ◽  
Yanhong Wu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Radio Frequency ◽  
Inkjet Printing ◽  
Great Promise ◽  
Light Weight ◽  
Wearable Electronics ◽  
High Flexibility

Graphene-based materials show great promise in wearable electronics due to their remarkable properties such as excellent electrical conductivity, high flexibility and light weight. Various techniques have been used to fabricate...

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