A photovoltaic self-powered gas sensor based on a single-walled carbon nanotube/Si heterojunction

Nanoscale ◽  
2017 ◽  
Vol 9 (47) ◽  
pp. 18579-18583 ◽  
Author(s):  
L. Liu ◽  
G. H. Li ◽  
Y. Wang ◽  
Y. Y. Wang ◽  
T. Li ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Visible Light ◽  
Gas Sensor ◽  
Power Source ◽  
Single Walled Carbon Nanotube ◽  
External Power Source ◽  
External Power ◽  
Gas Molecules ◽  
Self Powered ◽  
Trace Concentrations

A self-powered gas sensor activated by visible light which can detect trace concentrations of gas molecules without an external power source.

scholarly journals Recent Advances in Self-Powered Electrochemical Systems

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Linglin Zhou ◽  
Di Liu ◽  
Li Liu ◽  
Lixia He ◽  
Xia Cao ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Power Source ◽  
Triboelectric Nanogenerator ◽  
Application Domain ◽  
Important Research ◽  
Electrochemical System ◽  
Electrochemical Systems ◽  
External Power Source ◽  
External Power ◽  
Self Powered

Electrochemistry, one of the most important research and production technology, has been widely applicated in various fields. However, the requirement of external power source is a major challenge to its development. To solve this issue, developing self-powered electrochemical system (SPES) that can work by collecting energy from the environment is highly desired. The invention of triboelectric nanogenerator (TENG), which can transform mechanical energy into electricity, is a promising approach to build SPES by integrating with electrochemistry. In this view, the latest representative achievements of SPES based on TENG are comprehensively reviewed. By harvesting various mechanical energy, five SPESs are built, including electrochemical pollutants treatment, electrochemical synthesis, electrochemical sensor, electrochromic reaction, and anticorrosion system, according to the application domain. Additionally, the perspective for promoting the development of SPES is discussed.

A Self-Powered Intelligent Tactile Electric Skin Based on ZnO/Fabrics for Real-Time Monitoring Grabbing of Snowboard

2020 ◽  
Vol 15 (2) ◽  
pp. 179-183
Author(s):  
Rongxin Guan ◽  
Ziqi Wang ◽  
Xinchao Gao ◽  
Mailun Shen ◽  
Xihong Wang ◽  
...  
Keyword(s):  
Real Time ◽  
Power Source ◽  
Scientific Basis ◽  
Real Time Monitoring ◽  
Textile Fabrics ◽  
External Power Source ◽  
External Power ◽  
Self Powered ◽  
The Stability ◽  
Contact Position

Real-time monitoring of the position and duration of the snowboarder's grab in the air plays an very important role in scientifically improving the stability and innovation of the movement. Meanwhile, it also provides accurate scientific basis and judgment for the judges to identify the movement in the competition. By using four-needle ZnO nanowires combined with ordinary textile fabrics, a flexible device that can be attached to skis has been created. The device could output piezoelectric signals (working without external power source) served as both power source and sensing signal. Based on this, a snowboard has been modified to monitor the contact position and duration, when any touch or grab occurs on the snowboard. Undeniably, this work has created a new and more scientific monitoring system for snowboarding competitions and training. In addition, it's provide a viable method to promote the directions of sport competitions and equipment with constantly updating portable equipment.

scholarly journals Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements

Sensors ◽  
2019 ◽  
Vol 19 (17) ◽  
pp. 3715 ◽  
Author(s):  
Yaiza Montes-Cebrián ◽  
Albert Álvarez-Carulla ◽  
Jordi Colomer-Farrarons ◽  
Manel Puig-Vidal ◽  
Pere Ll. Miribel-Català
Keyword(s):  
Low Power ◽  
Point Of Care ◽  
Power Source ◽  
Laboratory Equipment ◽  
Fuel Concentration ◽  
Point Of Care Diagnostics ◽  
External Power Source ◽  
Wide Range ◽  
External Power ◽  
Self Powered

In this work, we present a self-powered electronic reader (e-reader) for point-of-care diagnostics based on the use of a fuel cell (FC) which works as a power source and as a sensor. The self-powered e-reader extracts the energy from the FC to supply the electronic components concomitantly, while performing the detection of the fuel concentration. The designed electronics rely on straightforward standards for low power consumption, resulting in a robust and low power device without needing an external power source. Besides, the custom electronic instrumentation platform can process and display fuel concentration without requiring any type of laboratory equipment. In this study, we present the electronics system in detail and describe all modules that make up the system. Furthermore, we validate the device’s operation with different emulated FCs and sensors presented in the literature. The e-reader can be adjusted to numerous current ranges up to 3 mA, with a 13 nA resolution and an uncertainty of 1.8%. Besides, it only consumes 900 µW in the low power mode of operation, and it can operate with a minimum voltage of 330 mV. This concept can be extended to a wide range of fields, from biomedical to environmental applications.

A self-powered damage detection sensor

2003 ◽  
Vol 38 (2) ◽  
pp. 115-124 ◽  
Author(s):  
N Elvin ◽  
A Elvin ◽  
D. H Choi
Keyword(s):  
Strain Sensor ◽  
Electrical Energy ◽  
Power Source ◽  
Central Processor ◽  
Renewable Power ◽  
External Power Source ◽  
Environmentally Safe ◽  
Potential Benefits ◽  
External Power ◽  
Self Powered

All existing methods of embedded damage-detecting sensors require an external power source and a means of transmitting the data to a central processor. This paper presents a novel self-powered strain sensor capable of transmitting data wirelessly to a remote receiver. This paper illustrates the performance of the sensor through the theoretical and experimental analysis of a simple damaged beam. The results show that a sensor powered through the conversion of mechanical to electrical energy is viable for detecting damage. The potential benefits of this sensor include ease of implementation during manufacture of the structure, and the use of an environmentally safe and renewable power source.

Nano-Ripple ZnO-Based Triboelectric Nanogenerator for Applications in Self-Powered Ultraviolet Detector

2019 ◽  
Vol 19 (11) ◽  
pp. 7369-7373 ◽  
Author(s):  
Jintang Lin
Keyword(s):  
Uv Irradiation ◽  
Uv Light ◽  
Power Source ◽  
Triboelectric Nanogenerator ◽  
Wearable Electronics ◽  
Uv Detector ◽  
External Power Source ◽  
Wide Range ◽  
External Power ◽  
Self Powered

Ultraviolet (UV) detectors have a wide range of commercial applications. However, most UV light detectors require an external power source, which limits their applications as portable and/or wearable electronics. In this work, a self-powered UV detector based on triboelectric nanogenerator (TENG) technology is demonstrated. Nano-ripple zinc oxide (ZnO) film acting as both UV-sensitive and triboelectric material was synthesized by a simple sol–gel method. The self-powered UV sensor detected UV irradiation without an external power source. The open-circuit voltage of the device under UV irradiation was 130 V, which was 2.3 times higher than the output of the device in the dark. Possible operating mechanisms of the device, which is based on the contact electrification process, are described.

scholarly journals Simple and rapid gas sensing using a single-walled carbon nanotube field-effect transistor-based logic inverter

2021 ◽  
Author(s):  
Salomé Forel ◽  
Leandro Sacco ◽  
Alice Castan ◽  
Ileana Florea ◽  
Costel Sorin Cojocaru
Keyword(s):  
Carbon Nanotube ◽  
Power Consumption ◽  
Data Processing ◽  
Gas Sensor ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Gas Sensing ◽  
Single Walled Carbon Nanotube ◽  
Effect Transistor ◽  
System Miniaturization

We design a gas sensor by combining two SWCNT-FET devices in an inverter configuration enabling a better system miniaturization together with a reduction of power consumption and ease of data processing.

Precise quantitative addition of multiple reagents into droplets in sequence using glass fiber-induced droplet coalescence

The Analyst ◽  
2015 ◽  
Vol 140 (3) ◽  
pp. 701-705
Author(s):  
Chunyu Li ◽  
Jian Xu ◽  
Bo Ma
Keyword(s):  
Glass Fiber ◽  
Power Source ◽  
Droplet Coalescence ◽  
External Power Source ◽  
External Power ◽  
Serial Addition

Serial addition of reagents with controlled volumes is performed using a glass fiber-induced droplet coalescence method without the requirement for an external power source.

scholarly journals Noiseless intensity amplification of repetitive signals by coherent addition using the temporal Talbot effect

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Reza Maram ◽  
James Van Howe ◽  
Ming Li ◽  
José Azaña
Keyword(s):  
Optical Pulse ◽  
Wave Train ◽  
Extinction Ratio ◽  
Power Source ◽  
Wave System ◽  
Talbot Effect ◽  
Physical Processes ◽  
External Power Source ◽  
External Power ◽  
Time Average

Abstract Amplification of signal intensity is essential for initiating physical processes, diagnostics, sensing, communications and measurement. During traditional amplification, the signal is amplified by multiplying the signal carriers through an active gain process, requiring the use of an external power source. In addition, the signal is degraded by noise and distortions that typically accompany active gain processes. We show noiseless intensity amplification of repetitive optical pulse waveforms with gain from 2 to ~20 without using active gain. The proposed method uses a dispersion-induced temporal self-imaging (Talbot) effect to redistribute and coherently accumulate energy of the original repetitive waveforms into fewer replica waveforms. In addition, we show how our passive amplifier performs a real-time average of the wave-train to reduce its original noise fluctuation, as well as enhances the extinction ratio of pulses to stand above the noise floor. Our technique is applicable to repetitive waveforms in any spectral region or wave system.

Sign in / Sign up

Export Citation Format

Share Document