scholarly journals Electret Nanogenerators for Self-Powered, Flexible Electronic Pianos

2021 ◽  
Vol 13 (8) ◽  
pp. 4142
Author(s):  
Yongjun Xiao ◽  
Chao Guo ◽  
Qingdong Zeng ◽  
Zenggang Xiong ◽  
Yunwang Ge ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Load Resistance ◽  
Matched Load ◽  
Electronic Products ◽  
Portable Electronics ◽  
Flexible Electronic ◽  
External Pressures ◽  
New Strategy ◽  
Self Powered ◽  
Processing Circuit

Traditional electronic pianos mostly adopt a gantry type and a large number of rigid keys, and most keyboard sensors of the electronic piano require additional power supply during playing, which poses certain challenges for portable electronic products. Here, we demonstrated a fluorinated ethylene propylene (FEP)-based electret nanogenerator (ENG), and the output electrical performances of the ENG under different external pressures and frequencies were systematically characterized. At a fixed frequency of 4 Hz and force of 4 N with a matched load resistance of 200 MΩ, an output power density of 20.6 mW/cm2 could be achieved. Though the implementation of a signal processing circuit, ENG-based, self-powered pressure sensors have been demonstrated for self-powered, flexible electronic pianos. This work provides a new strategy for electret nanogenerators for self-powered sensor networks and portable electronics.

scholarly journals Functionalized Carbon Materials for Electronic Devices: A Review

Micromachines ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 234 ◽  
Author(s):  
Urooj Kamran ◽  
Young-Jung Heo ◽  
Ji Won Lee ◽  
Soo-Jin Park
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Materials ◽  
Electronic Devices ◽  
Pressure Sensors ◽  
Future Generation ◽  
High Specific Surface Area ◽  
Synthetic Methods ◽  
Energy Storage Devices ◽  
Self Powered ◽  
Walled Carbon Nanotubes

Carbon-based materials, including graphene, single walled carbon nanotubes (SWCNTs), and multi walled carbon nanotubes (MWCNTs), are very promising materials for developing future-generation electronic devices. Their efficient physical, chemical, and electrical properties, such as high conductivity, efficient thermal and electrochemical stability, and high specific surface area, enable them to fulfill the requirements of modern electronic industries. In this review article, we discuss the synthetic methods of different functionalized carbon materials based on graphene oxide (GO), SWCNTs, MWCNTs, carbon fibers (CFs), and activated carbon (AC). Furthermore, we highlight the recent developments and applications of functionalized carbon materials in energy storage devices (supercapacitors), inkjet printing appliances, self-powered automatic sensing devices (biosensors, gas sensors, pressure sensors), and stretchable/flexible wearable electronic devices.

Light and Pressure Sensors Based on PVDF With Sprayed and Transparent Electrodes for Self-Powered Wireless Sensor Nodes

2019 ◽  
Vol 19 (3) ◽  
pp. 1114-1126 ◽  
Author(s):  
Marco Bobinger ◽  
Sherif Keddis ◽  
Stefan Hinterleuthner ◽  
Markus Becherer ◽  
Fabian Kluge ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Transparent Electrodes ◽  
Wireless Sensor Nodes ◽  
Self Powered

scholarly journals Laser-Induced Interdigital Structured Graphene Electrodes Based Flexible Micro-Supercapacitor for Efficient Peak Energy Storage

Molecules ◽  
2022 ◽  
Vol 27 (1) ◽  
pp. 329
Author(s):  
Apurba Ray ◽  
Jenny Roth ◽  
Bilge Saruhan
Keyword(s):  
Energy Storage ◽  
Power Density ◽  
Discharge Rate ◽  
Polymer Gel ◽  
Polymer Gel Electrolyte ◽  
Long Cycle Life ◽  
Portable Electronics ◽  
Peak Energy ◽  
Laser Structuring ◽  
Self Powered

The rapidly developing demand for lightweight portable electronics has accelerated advanced research on self-powered microsystems (SPMs) for peak power energy storage (ESs). In recent years, there has been, in this regard, a huge research interest in micro-supercapacitors for microelectronics application over micro-batteries due to their advantages of fast charge–discharge rate, high power density and long cycle-life. In this work, the optimization and fabrication of micro-supercapacitors (MSCs) by means of laser-induced interdigital structured graphene electrodes (LIG) has been reported. The flexible and scalable MSCs are fabricated by CO2-laser structuring of polyimide-based Kapton ® HN foils at ambient temperature yielding interdigital LIG-electrodes and using polymer gel electrolyte (PGE) produced by polypropylene carbonate (PPC) embedded ionic liquid of 1-ethyl-3-methyl-imidazolium-trifluoromethansulphonate [EMIM][OTf]. This MSC exhibits a wide stable potential window up to 2.0 V, offering an areal capacitance of 1.75 mF/cm2 at a scan rate of 5.0 mV/s resulting in an energy density (Ea) of 0.256 µWh/cm2 @ 0.03 mA/cm2 and power density (Pa) of 0.11 mW/cm2 @0.1 mA/cm2. Overall electrochemical performance of this LIG/PGE-MSC is rounded with a good cyclic stability up to 10,000 cycles demonstrating its potential in terms of peak energy storage ability compared to the current thin film micro-supercapacitors.

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.

Micropatterned P(VDF-TrFE) Film-Based Piezoelectric Nanogenerators for Highly Sensitive Self-Powered Pressure Sensors

2015 ◽  
Vol 25 (21) ◽  
pp. 3203-3209 ◽  
Author(s):  
Ju-Hyuck Lee ◽  
Hong-Joon Yoon ◽  
Tae Yun Kim ◽  
Manoj Kumar Gupta ◽  
Jeong Hwan Lee ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Highly Sensitive ◽  
Self Powered ◽  
Piezoelectric Nanogenerators

Self-powered flexible pressure sensors with vertically well-aligned piezoelectric nanowire arrays for monitoring vital signs

2015 ◽  
Vol 3 (45) ◽  
pp. 11806-11814 ◽  
Author(s):  
Xiaoliang Chen ◽  
Jinyou Shao ◽  
Ningli An ◽  
Xiangming Li ◽  
Hongmiao Tian ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Vital Signs ◽  
Nanowire Arrays ◽  
Highly Sensitive ◽  
Polarization Orientation ◽  
Self Powered ◽  
Flexible Pressure Sensors

We propose an in situ poling of vertically well-aligned piezoelectric nanowire arrays with preferential polarization orientation as highly sensitive self-powered sensors for monitoring vital signs.

Paper-Based Origami Triboelectric Nanogenerators and Self-Powered Pressure Sensors

ACS Nano ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 901-907 ◽  
Author(s):  
Po-Kang Yang ◽  
Zong-Hong Lin ◽  
Ken C. Pradel ◽  
Long Lin ◽  
Xiuhan Li ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Self Powered ◽  
Triboelectric Nanogenerators

scholarly journals A Robust and Wearable Triboelectric Tactile Patch as Intelligent Human-Achine Interface

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6366
Author(s):  
Zhiyuan Hu ◽  
Junpeng Wang ◽  
Yan Wang ◽  
Chuan Wang ◽  
Yawei Wang ◽  
...  
Keyword(s):  
Information Exchange ◽  
Triboelectric Nanogenerator ◽  
Wearable Electronics ◽  
Human Machine Interaction ◽  
Stable Performance ◽  
Machine Interface ◽  
Self Powered ◽  
Machine Interaction ◽  
Stable Signal ◽  
Processing Circuit

The human–machine interface plays an important role in the diversified interactions between humans and machines, especially by swaping information exchange between human and machine operations. Considering the high wearable compatibility and self-powered capability, triboelectric-based interfaces have attracted increasing attention. Herein, this work developed a minimalist and stable interacting patch with the function of sensing and robot controlling based on triboelectric nanogenerator. This robust and wearable patch is composed of several flexible materials, namely polytetrafluoroethylene (PTFE), nylon, hydrogels electrode, and silicone rubber substrate. A signal-processing circuit was used in this patch to convert the sensor signal into a more stable signal (the deviation within 0.1 V), which provides a more effective method for sensing and robot control in a wireless way. Thus, the device can be used to control the movement of robots in real-time and exhibits a good stable performance. A specific algorithm was used in this patch to convert the 1D serial number into a 2D coordinate system, so that the click of the finger can be converted into a sliding track, so as to achieve the trajectory generation of a robot in a wireless way. It is believed that the device-based human–machine interaction with minimalist design has great potential in applications for contact perception, 2D control, robotics, and wearable electronics.

The Response of Portable Electronics to Transient Conditions of Temperature and Humidity

2005 ◽  
Author(s):  
Jeff Punch ◽  
Ronan Grimes ◽  
Greg Heaslip ◽  
Timo Galkin ◽  
Kyo¨sti Va¨keva¨inen ◽  
...  
Keyword(s):  
Technical Conference ◽  
Electronic Systems ◽  
Digital Cameras ◽  
Electronic Products ◽  
Humidity Response ◽  
Portable Electronics ◽  
Material Migration ◽  
Temperature And Humidity ◽  
And Migration ◽  
Transient Variations

The design of portable electronic systems for use in hot and humid conditions represents a significant design challenge for packaging engineers. Humidity drives a range of failure mechanisms: the alteration of material properties; hygro-mechanical stress phenomena; and the acceleration of corrosion and material migration. Moreover, portable electronic products such as mobile phones, CD players and digital cameras can experience rapidly varying conditions of temperature and humidity which, in certain conditions, can cause condensation to form on the internal and external surfaces of the product. Condensation — or even very high relative humidity — is a severe stimulus because it greatly accelerates corrosion and migration mechanisms. This paper considers the response of portable electronics to transient variations of temperature and humidity in order to assess the conditions under which condensation is likely to occur. A first-order coupled hygrothermal model is developed to represent the temperature and humidity response of a typical portable product using simple time constants. Experimental characterisation of a sample product is performed to evaluate the parameters of the model, and it is demonstrated how movement from one environment to another can precipitate condensation.   This paper was also originally published as part of the Proceedings of the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems.

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