Related Experiment Video
Updated: Feb 11, 2026
05:32
Author Spotlight: Unlocking Plant Transformation by Innovating with Carbon Nanofiber Arrays
Published on: July 21, 2023
2.2K
Piezoelectric Polyacrylonitrile Nanofiber Film-Based Dual-Function Self-Powered Flexible Sensor
Gengrui Zhao1,2, Xiaodi Zhang1,2, Xin Cui3
1Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , P. R. China.
ACS Applied Materials & Interfaces
|April 18, 2018
Summary
This study presents a novel flexible sensor capable of simultaneously detecting both pressure and curvature. This multifunctional sensor, made from carbonized polyacrylonitrile/barium titanate nanofibers, shows great potential for wearable electronics.
Area of Science:
- Materials Science
- Nanotechnology
- Sensor Technology
Background:
- Flexible and wearable electronics require advanced sensors for monitoring physical changes.
- Existing sensors often detect only a single physical quantity using a single mechanism.
- There is a need for multifunctional sensors capable of simultaneous detection.
Purpose of the Study:
- To fabricate a multifunctional sensor for detecting pressure and curvature.
- To integrate piezoresistive, piezoelectric, and triboelectric effects for dual-mode sensing.
- To evaluate the sensor's performance, stability, and potential applications.
Main Methods:
- Fabrication of a carbonized electrospun polyacrylonitrile/barium titanate (PAN-C/BTO) nanofiber film.
- Integration of piezoresistive, piezoelectric, and triboelectric effects for sensing.
- Characterization of sensor performance for pressure and curvature detection.
Main Results:
- The sensor achieved a sensitivity of 1.12 deg⁻¹ for flex sensing and a gauge factor of 1.44 V·N⁻¹ for force sensing.
- High stability was demonstrated over 60,000 cycles in both sensing modes.
- Barium titanate nanoparticles enhanced pressure sensing sensitivity by over 2.4 times due to synergistic effects.
Conclusions:
- The developed PAN-C/BTO nanofiber sensor is multifunctional, capable of independent and simultaneous pressure and curvature detection.
- The sensor exhibits excellent stability and enhanced sensitivity, making it suitable for various applications.
- This self-powered, flexible dual-mode sensor holds significant potential for human-computer interaction and smart wearable systems.
Related Concept Videos
01:08Power
13.1K
The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
13.1K
01:30Exponential Functions with Base e
261
Exponential functions with base e are essential for modeling continuous processes of growth and decay. The constant e, approximately 2.718, naturally arises in systems where change occurs proportionally to the current value. A positive exponent represents continuous growth, while a negative exponent represents continuous decay. These functions are especially useful for describing situations where change happens smoothly over time rather than in discrete steps.One clear example of exponential...
261
02:36Nuclear Power
9.5K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.5K
01:22Sums of Power
78
In definite integration, Riemann sums approximate the area under a curve by dividing it into subintervals and summing the areas of rectangles. When these approximations follow predictable numerical patterns, such as arithmetic or polynomial sequences, sum formulas offer a more efficient and accurate way to compute the result. In particular, the sum of consecutive integers, squares, and cubes plays an essential role in simplifying these calculations, especially when dealing with uniform...
78
01:22Instantaneous Power
935
Instantaneous power is important in electrical circuits, mainly when dealing with sinusoidal input. Instantaneous power, denoted as p(t), results from the multiplication of the instantaneous voltage (v(t)) across an element and the instantaneous current (i(t)) flowing through it. This relationship adheres to the passive sign convention and represents a fundamental principle in electrical engineering.
935
01:14Complex Power
929
Power engineers have introduced the concept of complex power to determine the cumulative effect of parallel loads. This idea plays a crucial role in power analysis because it encompasses all the details related to the power consumed by a specific load.
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
Complex power is defined as the multiplication of the voltage and the complex conjugate of the current. The magnitude of this power, known as apparent power, is measured in volt-amperes (VA). Notably, the angle of the complex power equates to the...
929