A self-powered porous ZnS/PVDF-HFP mechanoluminescent composite film that converts human movement into eye-readable light

Nanoscale ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 5489-5495 ◽  
Author(s):  
Haitao Li ◽  
Yihe Zhang ◽  
Han Dai ◽  
Wangshu Tong ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Composite Film ◽  
Mechanical Vibration ◽  
Human Movement ◽  
Naked Eye ◽  
Self Powered

A facile self-powered electroluminescent material effectively converts mechanical vibration into light visible to the naked eye.

Self Powered Flexible Electronics Based on Self Poled “Ferroelectretic” Nanogenerator

MRS Advances ◽  
2016 ◽  
Vol 1 (45) ◽  
pp. 3083-3088 ◽  
Author(s):  
Sujoy Kumar Ghosh ◽  
Dipankar Mandal
Keyword(s):  
Composite Film ◽  
Flexible Electronics ◽  
Light Emitting Diode ◽  
Open Circuit ◽  
Pvdf Film ◽  
Light Emitting ◽  
Single Finger ◽  
Finger Touch ◽  
Self Powered ◽  
Pure Pvdf

ABSTRACTA ferroelectric nanogenerator without any electric poling treatment has been realized by incorporation of ytterbium (Yb) salt incorporated porous PVDF composite film. The composite film compose of electroactive β- and γ-phases, demonstrates higher dielectric and ferroelectric polarization responses than pure PVDF film. The 3 V of open circuit voltage with 0.47 µW/cm2 power density was generated by the nanogenerator upon single finger touch. It can also operate capacitor and light emitting diode without any subsidiary batteries.

Enhancing the output performance of hybrid nanogenerators based on Al-doped BaTiO3 composite films: a self-powered utility system for portable electronics

2018 ◽  
Vol 6 (33) ◽  
pp. 16101-16110 ◽  
Author(s):  
Bhaskar Dudem ◽  
L. Krishna Bharat ◽  
Harishkumarreddy Patnam ◽  
Anki Reddy Mule ◽  
Jae Su Yu
Keyword(s):  
Composite Film ◽  
Composite Films ◽  
Portable Electronics ◽  
Output Performance ◽  
Utility System ◽  
Self Powered

A composite film consisting of Al-doped BaTiO3 particles with high ferroelectricity is used to enhance the output performance of nanogenerators.

Fully-printed and silicon free self-powered electrochromic biosensors: Towards naked eye quantification

2020 ◽  
Vol 306 ◽  
pp. 127535 ◽  
Author(s):  
Miguel Aller-Pellitero ◽  
Sara Santiago-Malagón ◽  
Jules Ruiz ◽  
Yasmine Alonso ◽  
Boris Lakard ◽  
...  
Keyword(s):  
Naked Eye ◽  
Self Powered

Self-Powered Sensor for Naked-Eye Detection of Serum Trypsin

2011 ◽  
Vol 83 (4) ◽  
pp. 1185-1188 ◽  
Author(s):  
Brian A. Zaccheo ◽  
Richard M. Crooks
Keyword(s):  
Eye Detection ◽  
Naked Eye ◽  
Self Powered ◽  
Serum Trypsin ◽  
Naked Eye Detection

scholarly journals Self-Powered Acceleration Sensor Based on Multilayer Suspension Structure and TPU-RTV Film for Vibration Monitoring

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2763
Author(s):  
Xiaotao Han ◽  
Qiyuan Zhang ◽  
Junbin Yu ◽  
Jinsha Song ◽  
Zhengyang Li ◽  
...  
Keyword(s):  
Short Circuit ◽  
Mechanical Vibration ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Vibration Monitoring ◽  
Triboelectric Nanogenerator ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Self Powered ◽  
Suspension Structure

In this paper, we designed a triboelectric acceleration sensor with excellent multiple parameters. To more easily detect weak vibrations, the sensor was founded on a multilayer suspension structure. To effectively improve the electrical properties of the sensor, a surface roughening and internal doping friction film, which was refined with a room temperature vulcanized silicone rubber (RTV) and some thermoplastic polyurethanes (TPU) powder in a certain proportion, was integrated into the structure. It was found that the optimization of the RTV film increases the open circuit voltage and short circuit current of the triboelectric nanogenerator (TENG) by 223% and 227%, respectively. When the external vibration acceleration is less than 4 m/s2, the sensitivity and linearity are 1.996 V/(m/s2) and 0.999, respectively. Additionally, when it is in the range between 4 m/s2 and 15 m/s2, those are 23.082 V/(m/s2) and 0.975, respectively. Furthermore, the sensor was placed in a simulated truck vibration environment, and its self-powered monitoring ability validated by experiments in real time. The results show that the designed sensor has strong practical value in the field of monitoring mechanical vibration acceleration.

scholarly journals Rapid COVID-19 Molecular Diagnostic System Using Virus Enrichment Platform

Biosensors ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 373
Author(s):  
Yoon Ok Jang ◽  
Hyo Joo Lee ◽  
Bonhan Koo ◽  
Hye-Hee Cha ◽  
Ji-Soo Kwon ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Polyvinylidene Fluoride ◽  
Rna Extraction ◽  
Diagnostic System ◽  
Detection Methods ◽  
Molecular Diagnostic ◽  
Eye Detection ◽  
Naked Eye ◽  
Self Powered ◽  
Naked Eye Detection

The coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus (SARS-CoV)-2, is rapidly spreading and severely straining the capacities of public health communities and systems around the world. Therefore, accurate, rapid, and robust diagnostic tests for COVID-19 are crucial to prevent further spread of the infection, alleviate the burden on healthcare and diagnostic facilities, and ensure timely therapeutic intervention. To date, several detection methods based on nucleic acid amplification have been developed for the rapid and accurate detection of SARS-CoV-2. Despite the myriad of advancements in the detection methods for SARS-CoV-2, rapid sample preparation methods for RNA extraction from viruses have rarely been explored. Here, we report a rapid COVID-19 molecular diagnostic system that combines a self-powered sample preparation assay and loop-mediated isothermal amplification (LAMP) based naked-eye detection method for the rapid and sensitive detection of SARS-CoV-2. The self-powered sample preparation assay with a hydrophilic polyvinylidene fluoride filter and dimethyl pimelimidate can be operated by hand, without the use of any sophisticated instrumentation, similar to the reverse transcription (RT)-LAMP-based lateral flow assay for the naked-eye detection of SARS-CoV-2. The COVID-19 molecular diagnostic system enriches the virus population, extracts and amplifies the target RNA, and detects SARS-CoV-2 within 60 min. We validated the accuracy of the system by using 23 clinical nasopharyngeal specimens. We envision that this proposed system will enable simple, facile, efficient, and inexpensive diagnosis of COVID-19 at home and the clinic as a pre-screening platform to reduce the burden on the medical staff in this pandemic era.

A Self-Powered Sensor for Body Motion Mechanical Energy Collection and Monitor

2021 ◽  
Vol 16 (7) ◽  
pp. 1052-1057
Author(s):  
Ling Wang ◽  
Yongsheng Zhu ◽  
Junduo Liu ◽  
Changjun Jia ◽  
Ruiting Zhao
Keyword(s):  
Mechanical Energy ◽  
Human Movement ◽  
Body Motion ◽  
Exercise Rehabilitation ◽  
Multiple Sensors ◽  
Sports Science ◽  
Voltage Signal ◽  
New Ideas ◽  
Movement Ability ◽  
Self Powered

A self-powered sensor for the collection and monitor of body motion mechanical energy is manufactured. This sensor is made up of PVDF which is dealt with polarization. According to practical needs, single or multiple sensors could be selected to serve the function. Through piezoelectric voltage signal that produced by tester body motion mechanical energy to achieve body motion monitor and energy collection to charge microelectronic equipment. This kind of study can help collect body motion energy, facilitate sports training, guide exercise rehabilitation, and promote evaluation of human movement ability to prevent potential risks such as falls. It provides new ideas to material science and sports science practical application.

Triboelectrification induced self-powered microbial disinfection using nanowire-enhanced localized electric field

2020 ◽  
Author(s):  
Zheng-Yang Huo ◽  
Young Jun Kim ◽  
In-Yong Suh ◽  
Dong-Min Lee ◽  
Jeong Hwan Lee ◽  
...  
Keyword(s):  
Public Health ◽  
Electric Field ◽  
High Performance ◽  
Rational Design ◽  
Mechanical Vibration ◽  
Microbial Inactivation ◽  
Triboelectric Nanogenerator ◽  
Pressure Drops ◽  
Self Powered ◽  
Air Disinfection

Abstract Air-transmitted pathogens may lead to severe epidemics (e.g., COVID-19) showing huge threats to public health. Inactivation of the pathogenic microbes in the air is an essential process, whereas the feasibility of existing air disinfection technologies has encountered obstacles including only achieving physical separation but no inactivation, obvious pressure drops, and energy intensiveness. Here we report a rapid disinfection method for inactivating air-transmitted bacteria and viruses using the nanowire-enhanced localized electric field to damage the outer structures of microbes. This air disinfection system is driven by a triboelectric nanogenerator that converts mechanical vibration to electricity effectively and achieves self-powered. Assisted by a rational design for the accelerated charging and trapping of microbes, this self-powered air disinfection system promotes the microbial transport and achieves high performance: >99.99% microbial inactivation within 0.025s in a fast airflow (2 m/s) while only causing low pressure drops (<24 Pa). This rapid, self-powered air disinfection method may fill the urgent need for the air-transmitted microbial inactivation to protect public health.

scholarly journals A Novel Self-Powered Wireless Sensor Node Based on Energy Harvesting for Mechanical Vibration Monitoring

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Xihai Zhang ◽  
Junlong Fang ◽  
Fanfeng Meng ◽  
Xiaoli Wei
Keyword(s):  
Energy Harvesting ◽  
Sensor Node ◽  
Mechanical Vibration ◽  
Main Idea ◽  
Vibration Monitoring ◽  
Ambient Vibration ◽  
Wireless Sensor ◽  
Wireless Sensor Node ◽  
Vibration Energy Harvesting ◽  
Self Powered

Wireless sensor networks (WSNs) have been expected to improve the capability of capturing mechanical vibration dynamic behaviors and evaluating the current health status of equipment. While the expectation for mechanical vibration monitoring using WSNs has been high, one of the key limitations is the limited lifetime of batteries for sensor node. The energy harvesting technologies have been recently proposed. One of them shares the same main idea, that is, energy harvesting from ambient vibration can be converted into electric power. Employing the vibration energy harvesting, a novel self-powered wireless sensor node has been developed to measure mechanical vibration in this paper. The overall architecture of node is proposed. The wireless sensor node is described into four main components: the energy harvesting unit, the microprocessor unit, the radio transceiver unit, and accelerometer. Moreover, the software used to control the operation of wireless node is also suggested. At last, in order to achieve continuous self-powered for nodes, two operation modes including the charging mode and discharging mode are proposed. This design can effectively solve the problem of continuous supply power of sensor node for mechanical vibration monitoring.

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