Electrospun polyetherimide electret nonwoven for bi-functional smart face mask

Cheng, Yongliang; Wang, Chunya; Zhong, Junwen; Lin, Shizhe; Xiao, Yongjun; Zhong, Qize; Jiang, Hu‐Lin; Wu, Nan; Li, Wenbo; Chen, Shuwen; Wang, Bo; Zhou, Jun

doi:10.1016/j.nanoen.2017.03.011

Cited by 123 publications

(76 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, although the piezoelectric sensors have self‐powered characteristic, the electrical output is too low to achieve a large detection range . Recently, another technology, triboelectric nanogenerator (TENG) has been verified as a promising approach to realize a sensing device with both self‐powered capability and high sensitivity . The working principle of TENG is based on the coupling effect of triboelectrification and electrostatic induction.…”

Section: Introductionmentioning

confidence: 99%

Fully Elastic and Metal‐Free Tactile Sensors for Detecting both Normal and Tangential Forces Based on Triboelectric Nanogenerators

Ren

Nie

Shao

et al. 2018

Adv Funct Materials

133

View full text Add to dashboard Cite

A tactile sensor should be able to detect both normal and tangential forces, which is mandatory for simulating human hands, but this fundamental function has been overlooked by most of the previous studies. Here, based on a triboelectric nanogenerator (TENG) with single-electrode mode, the fully elastic and metal-free tactile sensor that can detect both normal and tangential forces is proposed. With tiny burr arrays on the contact interface to facilitate the elastic deformation, the detected normal pressure by the device can reach to 1.5 MPa with a sensitivity of about 51.43 kPa V −1 , and a large range of tangential forces can be detected ranging from 0.5 to 40 N with rough sensitivity of 0.83 N V −1 (0.5-3 N) and 2.50 N V −1 (3-40 N). Meanwhile, the applied tangential forces from different directions can also be clearly distinguished by the four-partitioned electrode structure. Moreover, a shield film is coated on the top surface of the device, which can screen the electrostatic interference and enhance the repeatability of the device. The demonstrated concept of this self-powered tactile sensor has excellent applicability for industrial robotics, human-machine interactions, artificial intelligence, etc.

show abstract

Section: Introductionmentioning

confidence: 99%

Fully Elastic and Metal‐Free Tactile Sensors for Detecting both Normal and Tangential Forces Based on Triboelectric Nanogenerators

Ren

Nie

Shao

et al. 2018

Adv Funct Materials

133

View full text Add to dashboard Cite

show abstract

“…By virtue of electrostatic deposition effect, the facial mask possesses higher removal efficiency and corresponding lower pressure drop. In Cheng's work, a bifunctional smart facial mask based on electrospun polyetherimide (PEI) electret nonwoven was developed, the facial mask possesses a bifunction of generating electricity meanwhile removing PM. The magnetic face mask proposed in this work could bring inspirations to the researchers in the air filtration field since the filtration efficiency could be significantly improved own to the common contribution of both electrostatic attraction and physical interception.…”

Section: Applications In the Air Filtration Fieldmentioning

confidence: 99%

Green Electrospun Nanofibers and Their Application in Air Filtration

Zhu

Jiang

et al. 2018

Macro Materials & Eng

284

200

View full text Add to dashboard Cite

Interventions and policies for tackling air pollution issues exist and have been proven to be effective. Membrane materials of nanofibrous morphology are attractive for air filtration, and further alleviate the environmental issues. Electrospinning as a simple and versatile way to fabricate ultrafine fibers has been attracting tremendous attention. Herein, the recent researches and future trends of green electrospinning are expounded from the aspects of green degradable materials, green solution electrospinning, and solvent‐free electrospinning. The green degradable materials, including biomass materials, biosynthetic polymer materials, and chemical synthetic materials are reviewed. Following the concept of green electrospinning, electrospun polymer nanofibers via aqueous solution are discussed; additionally, further trends of solvent‐free electrospinning including melt‐electrospinning, anion‐curing electrospinning, UV‐curing electrospinning, thermo‐curing electrospinning, and supercritical CO2‐assisted electrospinning are highlighted. Furthermore, the applications of these electrospun nanofibrous membranes in the field of air filtration are discussed. In the end, the challenges of green electrospinning and future prospects are summarized. The development of green electrospinning is reviewed with an emphasis on current advanced solvent‐free research, where electrospun nanofibrous membranes are contributing to promising treatment strategies to solve environment issue.

show abstract

“…Spinning technology mainly relies on the ejection, deposition, and drying of the solution on the substrate. Typically, centrifugation spinning, electrospinning, and high‐pressure air flow spinning are used to synthesize various types of fibers, such as polymer, inorganic nonmetallic and metallic fibers ( Figure a,b) . Among them, electrospinning has attracted more attention since it can industrially fabricate fibers with controllable diameter and assembled direction.…”

Section: Device Designmentioning

confidence: 99%

Fiber‐Based Energy Conversion Devices for Human‐Body Energy Harvesting

et al. 2019

Self Cite

View full text Add to dashboard Cite

body is actually a tremendous storehouse of energy that is generated from body heat and motion. [15][16][17][18][19] Power generation from breathing, heating, blood transport, arm motion, typing, and walking could reach to over 100 W for a 68 kg adult's daily activities (Figure 1). [20] Thus, converting 1% of power from the human body may be enough to support the work of most portable electronics.In the past two decades, researchers have developed several energy conversion devices based on piezoelectricity, electrostaticity, triboelectricity, or thermoelectricity that can directly harvest the mechanical or thermal energy and convert it into electric energy (these conversion devices are so-called nanogenerators (NGs)). [21][22][23][24][25] The first nanogenerator (NG) based on ZnO was invented by Prof. Wang in 2006; after that, various NGs were developed to harvest the mechanical or thermal energy with the output performance increasing gradually. [26] These NGs are easy-to-construct flexible devices since most materials for these devices are polymers and nanomaterials. Generally, the flexible devices assembled by film materials can be stretchable and bendable in one direction. But their lack of air-permeability, poor 3D deformation, and low damage tolerance limit their application, especially for wearable electronics. Therefore, fiberbased energy conversion devices have been designed. [27] These fiber-based devices can also be knitted to yarn or fabric in the clothing system to build up a large area electronic system. [28,29] The energy generation and internal charging can be realized by means of a self-powered system that harvests the energy from natural sources around the human body to sustain the wearable electronics. [30][31][32] The search for functional materials that possess good conversion efficiency, as well as great mechanical and environmental stability, combined with a novel device design might push these devices to meet the requirement of a practical application. In the past decade, numerous contributions have been offered to improve the performance of fiber-based energy conversion devices (FBECD) and extend its application. This review specifically summarizes FBECD with different energy conversion mechanisms including piezoelectricity, electrostaticity, triboelectricity, and thermoelectricity in recent processes (Figure 2). The functional materials, fiber fabrication techniques, and device design strategies for different classes of FBECDs are covered in the article. We also introduce an overview of the fiber-based self-powered system and sensors and Following the rapid development of lightweight and flexible smart electronic products, providing energy for these electronics has become a hot research topic. The human body produces considerable mechanical and thermal energy during daily activities, which could be used to power most wearable electronics. In this context, fiber-based energy conversion devices (FBECD) are proposed as candidates for effective conversion of human-body energy into electricity...

show abstract

Electrospun polyetherimide electret nonwoven for bi-functional smart face mask

Cited by 123 publications

References 41 publications

Fully Elastic and Metal‐Free Tactile Sensors for Detecting both Normal and Tangential Forces Based on Triboelectric Nanogenerators

Fully Elastic and Metal‐Free Tactile Sensors for Detecting both Normal and Tangential Forces Based on Triboelectric Nanogenerators

Green Electrospun Nanofibers and Their Application in Air Filtration

Fiber‐Based Energy Conversion Devices for Human‐Body Energy Harvesting

Contact Info

Product

Resources

About