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https://read.qxmd.com/read/30758935/single-layer-graphene-based-transparent-and-flexible-multifunctional-electronics-for-self-charging-power-and-touch-sensing-system
#1
Sungwoo Chun, Wonkyeong Son, Gwangyeob Lee, Shi Hyeong Kim, Jong Woo Park, Seon Jeong Kim, Changhyun Pang, Changsoon Choi
Applications in the field of portable and wearable electronics are becoming multifunctional, and the achievement of transparent electronics extensively expands the applications into devices such as wearable flexible displays or skin-attachable mobile computers. Moreover, the self-charging power system (SCPS) is the core technique for realizing portable and wearable electronics. Here, we propose a transparent and flexible multifunctional electronic system in which both an all-in-one SCPS and a touch sensor are combined...
February 13, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30741521/self-powered-and-self-functional-cotton-sock-using-piezoelectric-and-triboelectric-hybrid-mechanism-for-healthcare-and-sports-monitoring
#2
Minglu Zhu, Qiongfeng Shi, Tianyiyi He, Zhiran Yi, Yiming Ma, Bin Yang, Tao Chen, Chengkuo Lee
Wearable devices rely on hybrid mechanisms possess the advantages of establishing a smarter system for healthcare, sports monitoring, and smart home etc. Intimate socks with sensing capabilities can reveal more direct sensory information of body for longer duration in daily life. However, the limitation of suitable materials for smart textile makes the development of multi-functional socks remaining as a grand challenge. In this paper, we have developed a self-powered and self-functional sock (S2-sock) to realize diversified functions including energy harvesting and sensing various physiological signals, i...
February 11, 2019: ACS Nano
https://read.qxmd.com/read/30721538/self-powered-intracellular-drug-delivery-by-a-biomechanical-energy-driven-triboelectric-nanogenerator
#3
Zhirong Liu, Jinhui Nie, Bin Miao, Jiadong Li, Yuanbo Cui, Shu Wang, Xiaodi Zhang, Gengrui Zhao, Yongbo Deng, Yihui Wu, Zhou Li, Linlin Li, Zhong Lin Wang
Nondestructive, high-efficiency, and on-demand intracellular drug/biomacromolecule delivery for therapeutic purposes remains a great challenge. Herein, a biomechanical-energy-powered triboelectric nanogenerator (TENG)-driven electroporation system is developed for intracellular drug delivery with high efficiency and minimal cell damage in vitro and in vivo. In the integrated system, a self-powered TENG as a stable voltage pulse source triggers the increase of plasma membrane potential and membrane permeability...
February 5, 2019: Advanced Materials
https://read.qxmd.com/read/30721021/direct-current-rotary-tubular-triboelectric-nanogenerator-based-on-liquid-dielectrics-contact-for-sustainably-energy-harvesting-and-chemical-composition-analysis
#4
Jiyu Wang, Zhiyi Wu, Lun Pan, Ruijie Gao, Binbin Zhang, Lijun Yang, Hengyu Guo, Ruijin Liao, Zhong Lin Wang
Ambient mechanical energy harvesting technology introduces a promising solution to alleviate expanding energy demands on a sustainable basis, of which the drawbacks should be drawn attention for further advances. In this work, a liquid-dielectrics interface based triboelectric nanogenerator (TENG) with direct-current output is reported as an energy harvester and a chemical sensor, with advantages of feasible fabrication, anti-wearing durability, and low energy consumption. The TENG consists of FEP tube and Cu electrodes is designed into ring structure, with two electric brushes bilaterally anchored that converts an AC output into direct-current output...
February 5, 2019: ACS Nano
https://read.qxmd.com/read/30718775/a-high-performance-triboelectric-nanogenerator-using-porous-polyimide-aerogel-film
#5
Zia Saadatnia, Shahriar Ghaffari Mosanenzadeh, Ebrahim Esmailzadeh, Hani E Naguib
This paper presents a novel aerogel-based Triboelectric Nanogenerator (TENG) which shows a superior performance for energy harvesting and sensing applications. Polyimide-based aerogel film with varying open-cell content level is developed to be used as the main contact material for the TENG. The fabricated aerogel film is fully characterized to reveal the chemical and mechanical properties of the developed material. It is shown the use of Polyimide aerogel film remarkably enhances the performance of the TENG compared to a TENG with fully dense Polyimide layer with no porosity...
February 4, 2019: Scientific Reports
https://read.qxmd.com/read/30715050/development-of-the-triboelectric-nanogenerator-using-a-metal-to-metal-imprinting-process-for-improved-electrical-output
#6
Moonwoo La, Jun Hyuk Choi, Jeong-Young Choi, Taek Yong Hwang, Jeongjin Kang, Dongwhi Choi
Triboelectric nanogenerators (TENG), which utilize contact electrification of two different material surfaces accompanied by electrical induction has been proposed and is considered as a promising energy harvester. Researchers have attempted to form desired structures on TENG surfaces and successfully demonstrated the advantageous effect of surface topography on its electrical output performance. In this study, we first propose the structured Al (SA)-assisted TENG (SA-TENG), where one of the contact layers of the TENG is composed of a structured metal surface formed by a metal-to-metal (M2M) imprinting process...
October 27, 2018: Micromachines
https://read.qxmd.com/read/30707552/contact-electrification-between-two-identical-materials-curvature-effect
#7
Cheng Xu, Binbin Zhang, Aurelia Chi Wang, Haiyang Zou, Guanlin Liu, Wenbo Ding, Changsheng Wu, Ming Ma, Peizhong Feng, Zhiqun Lin, Zhong Lin Wang
It is known that contact-electrification (or triboelectrification) usually occurs between two different materials, which could be explained by several models for different materials systems (Adv. Mater. 2018, 30, 1706790; Adv. Mater. 2018, 30, 1803968). But contact between two pieces of the chemically same material could also result in electrostatic charges although the charge density is rather low, which is hardly to be understood from the physics point of view. In this paper, by preparing a contact-separation mode triboelectric nanogenerator (TENG) using two pieces of an identical material, the direction of charge transfer during contact-electrification is studied regarding to its dependence on curvatures of the sample surfaces...
February 1, 2019: ACS Nano
https://read.qxmd.com/read/30699937/editorial-for-the-special-issue-on-nanogenerators-in-korea
#8
EDITORIAL
Yong Tae Park, Dukhyun Choi
Nanogenerator-based technologies have found outstanding accomplishments in energy harvesting applications over the past two decades [...].
January 29, 2019: Micromachines
https://read.qxmd.com/read/30698417/study-of-fiber-based-wearable-energy-systems
#9
Xiaoming Tao
Fiber-based electronic and photonic devices have the most desired human-friendly features, such as being soft, ubiquitous, flexible, stretchable, light, and permeable, and thus are ideal to be employed as the interface platform between humans, the environment, and machines. Today, these smart wearable devices are normally powered by rechargeable batteries. It is extremely desirable to have an undisrupted power supply for us to go anywhere at any time. Harvesting energy from the ambient environment or our body can potentially fulfill such a goal...
January 30, 2019: Accounts of Chemical Research
https://read.qxmd.com/read/30687980/an-ultra-shapeable-smart-sensing-platform-based-on-a-multimodal-ferrofluid-infused-surface
#10
Abdelsalam Ahmed, Islam Hassan, Islam M Mosa, Esraa Elsanadidy, Mohamed Sharafeldin, James F Rusling, Shenqiang Ren
The development of wearable, all-in-one sensors that can simultaneously monitor several hazard conditions in a real-time fashion imposes the emergent requirement for a smart and stretchable hazard avoidance sensing platform that is stretchable and skin-like. Multifunctional sensors with these features are problematic and challenging to accomplish. In this context, a multimodal ferrofluid-based triboelectric nanogenerator (FO-TENG), featuring sensing capabilities to a variety of hazard stimulus such as a strong magnetic field, noise level, and falling or drowning is reported...
January 28, 2019: Advanced Materials
https://read.qxmd.com/read/30682472/hydroxyethyl-cellulose-for-spontaneous-synthesis-of-antipathogenic-nanostructures-ag-au-nanoparticles-versus-ag-au-nano-alloy
#11
Hanan B Ahmed, Mariana A Attia, Farida M S E El-Dars, Hossam E Emam
The current approach represents a controllable strategy for studying the antipathogenic effects against selected bacterial strains and fungi for silver nanoparticles and gold nanoparticles versus their bimetallic nano-alloys spontaneously prepared by the same technique. Spontaneous ingraining of silver and gold based monometallic and bimetallic nano-objects was carried out by employing organic polymer of hydroxyethyl cellulose which was presumed to play the dual role of nanogenerator and surfactant, via seed mediated growth technique...
January 22, 2019: International Journal of Biological Macromolecules
https://read.qxmd.com/read/30681827/a-hybridized-triboelectric-electromagnetic-water-wave-energy-harvester-based-on-a-magnetic-sphere
#12
Zhiyi Wu, Hengyu Guo, Wenbo Ding, Yi-Cheng Wang, Lei Zhang, Zhong Lin Wang
Blue energy harvested from ocean wave is an important and promising renewable energy source for sustainable development of our society. Triboelectric nanogenerators (TENGs) and electromagnetic energy harvesters (EMGs) both are considered as promising approaches for harvesting blue energy. In this work, a hybridized triboelectric-electromagnetic water wave energy harvester (WWEH) based on a magnetic sphere is presented. A freely-rolling magnetic sphere senses the water motion to drive the friction object sliding on a solid surface for TENG back and forth...
January 25, 2019: ACS Nano
https://read.qxmd.com/read/30666864/environmental-energy-harvesting-adapting-to-different-weather-conditions-and-self-powered-vapor-sensor-based-on-humidity-responsive-triboelectric-nanogenerators
#13
Zewei Ren, Yafei Ding, Jinhui Nie, Fan Wang, Liang Xu, Shiquan Lin, Xiangyu Chen, Zhonglin Wang
Triboelectric nanogenerators (TENGs) have been widely applied for energy harvesting and self-powered sensing, while smart deformable materials can be combined with TENG to acquire a more intelligent and self-adaptive system. Here, based on the vapor-driven actuation material of perfluorosulfonic acid ionomer (PFSA), we propose a type of humidity-responsive TENG. The integrated TENG array can automatically bend to the desired angles in responding to different humidity conditions and thus, it can effectively collect energy from both wind and rain drop, where the power density can reach 1...
January 22, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30652848/self-powered-intelligent-water-meter-for-electrostatic-scale-preventing-rust-protection-and-flow-sensor-in-a-solar-heater-system
#14
Weichao Wang, Yonghui Wu, Zhenghu Chang, Fangqi Chen, Heyi Wang, Guangqin Gu, Haiwu Zheng, Gang Cheng, Zhong Lin Wang
Triboelectric nanogenerator (TENG) has been investigated for mechanical energy harvesting because of its high-energy conversion efficiency, low cost, ease manufacturing, etc. This paper deals with designing a kind of water-fluid driven rotating TENG (WR-TENG) inspired by the structure of a water meter. The designed WR-TENG is effectively integrated with a self-powered electrostatic scale-preventing and rust protection system. The WR-TENG can generate a constant DC voltage up to about 7.6 kV by using a voltage doubling rectifying circuit (VDRC) to establish a high-voltage electrostatic field in the water tank...
January 17, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30632734/electricity-generation-from-capillary-driven-ionic-solution-flow-in-a-three-dimensional-graphene-membrane
#15
Changzheng Li, Zhiqun Tian, Lizhe Liang, Shibin Yin, Pei Kang Shen
Harvesting energy from the ambient environment provides great promise in the applications of micro/nano devices and self-powered systems. Herein, we report a novel energy scavenging method that ionic solution infiltrating into a three-dimensional graphene (3DG) membrane can spontaneously generate electricity under ambient conditions. A constructed 3DG nanogenerator (3DGNG) with an effective size of 0.5×2 cm can produce a continuous voltage of ~0.28 V and a remarkable output current of ~62 μA. The voltage is higher than those generated from the interaction between water and carbon nanomaterials in previous researches typically in the range of microvolts to millivolts...
January 11, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30624041/hypoxia-irrelevant-photonic-thermodynamic-cancer-nanomedicine
#16
Hui-Jing Xiang, Han Lin, Luodan Yu, Yu Chen
The hypoxic tumor microenvironment severely lowers the therapeutic efficacy of oxygen-dependent anticancer modalities because tumor hypoxia hinders the generation of toxic reactive oxygen species. Here we report a thermodynamic cancer-therapeutic modality that employs oxygen-irrelevant free radicals generated from thermo-labile initiators for inducing cancer-cell death. Free radical nanogenerator was engineered via direct growth of mesoporous silica layer onto the surface of two-dimensional Nb2C MXene nanosheets towards multifunctionality, where the mesopore provided the reservoirs for initiators and MXene core acted as the photonic-thermal trigger at near infrared-II biowindow (NIR-II)...
January 9, 2019: ACS Nano
https://read.qxmd.com/read/30621319/increased-interfacial-area-between-dielectric-layer-and-electrode-of-triboelectric-nanogenerator-toward-robustness-and-boosted-energy-output
#17
Donghyeon Yoo, Eun Yeong Go, Dongwhi Choi, Jeong-Won Lee, Insang Song, Jae-Yoon Sim, Woonbong Hwang, Dong Sung Kim
Given the operation conditions wherein mechanical wear is inevitable, modifying bulk properties of the dielectric layer of a triboelectric nanogenerator (TENG) has been highlighted to boost its energy output. However, several concerns still remain in regards to the modification due to high-cost materials and cumbersome processes being required. Herein, we report TENG with a microstructured Al electrode (TENG_ME) as a new approach to modifying bulk properties of the dielectric layer. The microstructured Al electrode is utilized as a component of TENG to increase the interfacial area between the dielectric layer and electrode...
January 6, 2019: Nanomaterials
https://read.qxmd.com/read/30618241/novel-interfacial-bulk-heterojunction-technique-for-enhanced-response-in-zno-nanogenerator
#18
Rajagopalan Pandey, Nirmal Prasanth Maria Joseph Raj, Vipul Singh, Palani Iyamperumal Anand, Sang-Jae Kim
In this paper, a direct sustainable approach for the development of n-ZnO:p-CuO heterojunction (ZCH) through a simple grinding is reported to be an effective technique to enhance the piezoelectric performance of ZCH/PDMS nanocomposite-based nanogenerator (ZP-PNG). We have first optimized the best concentration for ZnO/PDMS nanocomposite for the realization of the piezoelectric nanogenerator. Later, with the same configuration, we implemented a novel, simple, facile, frugal and inexpensive technique to fabricate ZCH...
January 8, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30618233/triboelectric-nanogenerator-driven-self-charging-and-self-healing-flexible-asymmetric-supercapacitor-power-cell-for-direct-power-generation
#19
Anirban Maitra, Sarbaranjan Paria, Sumanta Kumar Karan, Ranadip Bera, Aswini Bera, Amit Kumar Das, Suman Kumar Si, Lopamudra Halder, Anurima De, Bhanu Bhusan Khatua
The expeditious growth of portable electronics has endorsed the researchers to develop self-powered devices that synchronically harvest and store energy. However, it is quite challenging to integrate two distinct phenomena in a single portable device. Here, we emphasize the fabrication of a triboelectric driven self-charging and self-healing asymmetric supercapacitor (SCSHASC) power cell comprised of magnetic cobalt ferrite grown on a stainless steel fabric (CoFe2O4@SS) as positive and iron oxides decorated reduced graphene oxide grown on stainless steel fabric (Fe-RGO@SS) as negative electrodes separated by a KOH soaked self-healing polymer hydrogel electrolyte membrane...
January 8, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30615838/high-power-density-tower-like-triboelectric-nanogenerator-for-harvesting-arbitrary-directional-water-wave-energy
#20
Minyi Xu, Tiancong Zhao, Chuan Wang, Steven L Zhang, Zhou Li, Xinxiang Pan, Zhong Lin Wang
Wave energy is one of the most available energy sources in ocean. In this work, a design of high power density triboelectric nanogenerator (TENG) based on a tower structure is proposed for harvesting wave energy from arbitrary directions. Such tower-like TENG (T-TENG) consists of multiple units made of PTFE balls and 3D printed arc surface coated with melt adhesive reticulation nylon film. The power generation model coupled with the kinetic model for the T-TENG is proposed and discussed. The T-TENG can effectively convert arbitrary directional wave energy into electrical energy by utilizing charged balls rolling on optimized arc surface due to ocean wave excitation...
January 7, 2019: ACS Nano
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