14 research outputs found
Transparent and Flexible Triboelectric Sensing Array for Touch Security Applications
Tactile sensors with large-scale
array and high sensitivity is essential for human–machine interaction,
smart wearable devices, and mobile networks. Here, a transparent and
flexible triboelectric sensing array (TSA) with fingertip-sized pixels
is demonstrated by integrating ITO electrodes, FEP film, and signal
transmission circuits on an undivided palm-sized polyethylene terephthalate
substrate. The sensing pixels can be triggered by the corresponding
external contact to induce the electrostatic potential in the transparent
electrodes without power consumption, which is individually recognized
by the sensor. By testing the response of the pixels, the electrical
characterization is systematically investigated. The proposed TSA
exhibits excellent durability, independence, and synchronicity, which
is able to realize real-time touch sensing, spatial mapping, and motion
monitoring. The integrated TSA has great potential for an active tactile
system, human–machine interface, wearable electronics, private
communication, and advanced security identification
Rotating-Sleeve Triboelectric–Electromagnetic Hybrid Nanogenerator for High Efficiency of Harvesting Mechanical Energy
Currently, a triboelectric nanogenerator (TENG) and an electromagnetic
generator (EMG) have been hybridized to effectively scavenge mechanical
energy. However, one critical issue of the hybrid device is the limited
output power due to the mismatched output impedance between the two
generators. In this work, impedance matching between the TENG and
EMG is achieved facilely through commercial transformers, and we put
forward a highly integrated hybrid device. The rotating-sleeve triboelectric–electromagnetic
hybrid nanogenerator (RSHG) is designed by simulating the structure
of a common EMG, which ensures a high efficiency in transferring ambient
mechanical energy into electric power. The RSHG presents an excellent
performance with a short-circuit current of 1 mA and open-circuit
voltage of 48 V at a rotation speed of 250 rpm. Systematic measurements
demonstrate that the hybrid nanogenerator can deliver the largest
output power of 13 mW at a loading resistance of 8 kΩ. Moreover,
it is demonstrated that a wind-driven RSHG can light dozens of light-emitting
diodes and power an electric watch. The distinctive structure and
high output performance promise the practical application of this
rotating-sleeve structured hybrid nanogenerator for large-scale energy
conversion
Screen-Printed Washable Electronic Textiles as Self-Powered Touch/Gesture Tribo-Sensors for Intelligent Human–Machine Interaction
Multifunctional
electronic textiles (E-textiles) with embedded
electric circuits hold great application prospects for future wearable
electronics. However, most E-textiles still have critical challenges,
including air permeability, satisfactory washability, and mass fabrication.
In this work, we fabricate a washable E-textile that addresses all
of the concerns and shows its application as a self-powered triboelectric
gesture textile for intelligent human–machine interfacing.
Utilizing conductive carbon nanotubes (CNTs) and screen-printing technology,
this kind of E-textile embraces high conductivity (0.2 kΩ/sq),
high air permeability (88.2 mm/s), and can be manufactured on common
fabric at large scales. Due to the advantage of the interaction between
the CNTs and the fabrics, the electrode shows excellent stability
under harsh mechanical deformation and even after being washed. Moreover,
based on a single-electrode mode triboelectric nanogenerator and electrode
pattern design, our E-textile exhibits highly sensitive touch/gesture
sensing performance and has potential applications for human–machine
interfacing
Screen-Printed Washable Electronic Textiles as Self-Powered Touch/Gesture Tribo-Sensors for Intelligent Human–Machine Interaction
Multifunctional
electronic textiles (E-textiles) with embedded
electric circuits hold great application prospects for future wearable
electronics. However, most E-textiles still have critical challenges,
including air permeability, satisfactory washability, and mass fabrication.
In this work, we fabricate a washable E-textile that addresses all
of the concerns and shows its application as a self-powered triboelectric
gesture textile for intelligent human–machine interfacing.
Utilizing conductive carbon nanotubes (CNTs) and screen-printing technology,
this kind of E-textile embraces high conductivity (0.2 kΩ/sq),
high air permeability (88.2 mm/s), and can be manufactured on common
fabric at large scales. Due to the advantage of the interaction between
the CNTs and the fabrics, the electrode shows excellent stability
under harsh mechanical deformation and even after being washed. Moreover,
based on a single-electrode mode triboelectric nanogenerator and electrode
pattern design, our E-textile exhibits highly sensitive touch/gesture
sensing performance and has potential applications for human–machine
interfacing
Screen-Printed Washable Electronic Textiles as Self-Powered Touch/Gesture Tribo-Sensors for Intelligent Human–Machine Interaction
Multifunctional
electronic textiles (E-textiles) with embedded
electric circuits hold great application prospects for future wearable
electronics. However, most E-textiles still have critical challenges,
including air permeability, satisfactory washability, and mass fabrication.
In this work, we fabricate a washable E-textile that addresses all
of the concerns and shows its application as a self-powered triboelectric
gesture textile for intelligent human–machine interfacing.
Utilizing conductive carbon nanotubes (CNTs) and screen-printing technology,
this kind of E-textile embraces high conductivity (0.2 kΩ/sq),
high air permeability (88.2 mm/s), and can be manufactured on common
fabric at large scales. Due to the advantage of the interaction between
the CNTs and the fabrics, the electrode shows excellent stability
under harsh mechanical deformation and even after being washed. Moreover,
based on a single-electrode mode triboelectric nanogenerator and electrode
pattern design, our E-textile exhibits highly sensitive touch/gesture
sensing performance and has potential applications for human–machine
interfacing
All-Nanofiber-Based Ultralight Stretchable Triboelectric Nanogenerator for Self-Powered Wearable Electronics
The
flexible and stretchable electronics have been considered as next-generation
electronics. Stretchable triboelectric nanogenerators (S-TENGs) with
both multifunction and comfort have become a hot field of research
for wearable electronic devices recently. Here, we designed an all-nanofiber-based,
ultralight, S-TENG that could be softly attached on skins for motion
energy harvesting and self-powered biomechanical monitoring. The S-TENG
consisted of only two nanofiber membranes: a polyvinylidene fluoride
nanofiber membrane (PVDFNM) supported by thermoplastic polyurethane
nanofiber membrane (TPUNM) was used as the frictional layer, and a
multiwalled carbon nanotube (MWCNT) conductive material screen-printed
on the TPUNM was used as the electrode layer. Due to the excellent
stretchability of TPUNM, the S-TENG could generate electricity under
various types of deformation, and regains its original performance
after intense mechanical extension, even if it is partially cut or
damaged. Owing to the great electronegativity of PVDFNM, the device
generated a maximum voltage of 225 V and a current of 4.5 ÎĽA
with an electrode area of 6 Ă— 1 cm<sup>2</sup>. The S-TENG has
great potential applications in self-powered wearable devices, electronic
skins, and smart sensor networks
Screen-Printed Washable Electronic Textiles as Self-Powered Touch/Gesture Tribo-Sensors for Intelligent Human–Machine Interaction
Multifunctional
electronic textiles (E-textiles) with embedded
electric circuits hold great application prospects for future wearable
electronics. However, most E-textiles still have critical challenges,
including air permeability, satisfactory washability, and mass fabrication.
In this work, we fabricate a washable E-textile that addresses all
of the concerns and shows its application as a self-powered triboelectric
gesture textile for intelligent human–machine interfacing.
Utilizing conductive carbon nanotubes (CNTs) and screen-printing technology,
this kind of E-textile embraces high conductivity (0.2 kΩ/sq),
high air permeability (88.2 mm/s), and can be manufactured on common
fabric at large scales. Due to the advantage of the interaction between
the CNTs and the fabrics, the electrode shows excellent stability
under harsh mechanical deformation and even after being washed. Moreover,
based on a single-electrode mode triboelectric nanogenerator and electrode
pattern design, our E-textile exhibits highly sensitive touch/gesture
sensing performance and has potential applications for human–machine
interfacing
All-Nanofiber-Based Ultralight Stretchable Triboelectric Nanogenerator for Self-Powered Wearable Electronics
The
flexible and stretchable electronics have been considered as next-generation
electronics. Stretchable triboelectric nanogenerators (S-TENGs) with
both multifunction and comfort have become a hot field of research
for wearable electronic devices recently. Here, we designed an all-nanofiber-based,
ultralight, S-TENG that could be softly attached on skins for motion
energy harvesting and self-powered biomechanical monitoring. The S-TENG
consisted of only two nanofiber membranes: a polyvinylidene fluoride
nanofiber membrane (PVDFNM) supported by thermoplastic polyurethane
nanofiber membrane (TPUNM) was used as the frictional layer, and a
multiwalled carbon nanotube (MWCNT) conductive material screen-printed
on the TPUNM was used as the electrode layer. Due to the excellent
stretchability of TPUNM, the S-TENG could generate electricity under
various types of deformation, and regains its original performance
after intense mechanical extension, even if it is partially cut or
damaged. Owing to the great electronegativity of PVDFNM, the device
generated a maximum voltage of 225 V and a current of 4.5 ÎĽA
with an electrode area of 6 Ă— 1 cm<sup>2</sup>. The S-TENG has
great potential applications in self-powered wearable devices, electronic
skins, and smart sensor networks
Screen-Printed Washable Electronic Textiles as Self-Powered Touch/Gesture Tribo-Sensors for Intelligent Human–Machine Interaction
Multifunctional
electronic textiles (E-textiles) with embedded
electric circuits hold great application prospects for future wearable
electronics. However, most E-textiles still have critical challenges,
including air permeability, satisfactory washability, and mass fabrication.
In this work, we fabricate a washable E-textile that addresses all
of the concerns and shows its application as a self-powered triboelectric
gesture textile for intelligent human–machine interfacing.
Utilizing conductive carbon nanotubes (CNTs) and screen-printing technology,
this kind of E-textile embraces high conductivity (0.2 kΩ/sq),
high air permeability (88.2 mm/s), and can be manufactured on common
fabric at large scales. Due to the advantage of the interaction between
the CNTs and the fabrics, the electrode shows excellent stability
under harsh mechanical deformation and even after being washed. Moreover,
based on a single-electrode mode triboelectric nanogenerator and electrode
pattern design, our E-textile exhibits highly sensitive touch/gesture
sensing performance and has potential applications for human–machine
interfacing
All-Nanofiber-Based Ultralight Stretchable Triboelectric Nanogenerator for Self-Powered Wearable Electronics
The
flexible and stretchable electronics have been considered as next-generation
electronics. Stretchable triboelectric nanogenerators (S-TENGs) with
both multifunction and comfort have become a hot field of research
for wearable electronic devices recently. Here, we designed an all-nanofiber-based,
ultralight, S-TENG that could be softly attached on skins for motion
energy harvesting and self-powered biomechanical monitoring. The S-TENG
consisted of only two nanofiber membranes: a polyvinylidene fluoride
nanofiber membrane (PVDFNM) supported by thermoplastic polyurethane
nanofiber membrane (TPUNM) was used as the frictional layer, and a
multiwalled carbon nanotube (MWCNT) conductive material screen-printed
on the TPUNM was used as the electrode layer. Due to the excellent
stretchability of TPUNM, the S-TENG could generate electricity under
various types of deformation, and regains its original performance
after intense mechanical extension, even if it is partially cut or
damaged. Owing to the great electronegativity of PVDFNM, the device
generated a maximum voltage of 225 V and a current of 4.5 ÎĽA
with an electrode area of 6 Ă— 1 cm<sup>2</sup>. The S-TENG has
great potential applications in self-powered wearable devices, electronic
skins, and smart sensor networks