Advanced Fiber Materials, Journal Year: 2022, Volume and Issue: 4(5), P. 1267 - 1277
Published: July 6, 2022
Language: Английский
Advanced Fiber Materials, Journal Year: 2022, Volume and Issue: 4(5), P. 1267 - 1277
Published: July 6, 2022
Language: Английский
Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(13)
Published: Jan. 18, 2021
Abstract Inspired by the ultralight and structurally robust spider webs, flexible nanofibril‐assembled aerogels with intriguing attributes have been designed for achieving promising performances in various applications. Here, conductive polyimide nanofiber (PINF)/MXene composite aerogel typical “layer‐strut” bracing hierarchical nanofibrous cellular structure has developed via freeze‐drying thermal imidization process. Benefiting from porous architecture bonding between PINF MXene, PINF/MXene exhibits an ultralow density (9.98 mg cm −3 ), temperature tolerance ‐50 to 250 °C, superior compressibility recoverability (up 90% strain), excellent fatigue resistance over 1000 cycles. The can be used as a piezoresistive sensor, outstanding sensing capacity up strain (corresponding 85.21 kPa), detection limit of 0.5% 0.01 cycles, stability reproductivity extremely harsh environments. Furthermore, also oil/water separation properties such high adsorption (55.85 135.29 g −1 ) stable recyclability due its hydrophobicity structure. It is expected that supply new multifunctional platform human bodily motion/physical signals high‐efficient separation.
Language: Английский
Citations
531Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(39)
Published: Aug. 9, 2020
Abstract Pressure sensors play an integral role in a wide range of applications, such as soft robotics and health monitoring. In order to meet this demand, many groups microengineer the active layer—the layer that deforms under pressure dictates changes output signal—of capacitive, resistive/piezoresistive, piezoelectric, triboelectric improve sensor performance. Geometric microengineering has been shown performance parameters sensitivity, dynamic range, limit detection, response relaxation times. There are implemented designs, including microdomes, micropyramids, lines or microridges, papillae, microspheres, micropores, microcylinders, each offering different advantages for particular application. It is important compare techniques by which microengineered layers designed fabricated they may provide additional insights on compatibility sensing limits. To evaluate fabrication method, it critical take into account uniformity, ease fabrication, shape size versatility tunability, scalability both device process. By better understanding how design compares, can be targetedly implemented.
Language: Английский
Citations
428Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 420, P. 127720 - 127720
Published: Nov. 16, 2020
Language: Английский
Citations
381ACS Nano, Journal Year: 2020, Volume and Issue: 14(8), P. 10633 - 10647
Published: Aug. 10, 2020
Various wearable aerogel sensors are emerging for their light weight, fairly wide sensing range, and sensitive ability. Aramid nanofibers (ANFs) as a kind of burgeoning building blocks realize multifunctional applications in diversified fields innate extinguished mechanical property thermal stability. Limited by high insulating property, this work ANFs were designed to integrate with 2D MXene sheet distinct conductive property. Herein, we report an MXene/ANFs composite through feasible controllable vacuum filtration followed freeze-drying process. Benefiting from the inerratic 3D hierarchical "mortar-brick" porous structure ultralow density 25 mg/cm3, aerogels proved possess compressible resilience appealing performance up 1000 times. Importantly, verified series simulation experiments, sensor shows detection range (2.0-80.0% compression strain), (128 kPa-1), limit (100 Pa), which still play flexible role detecting human movement even vigorous sports after undergoing ultrahigh devastating pressures (∼623 kPa). In addition, can withstand harsh temperature 200 °C excellent flame resistance. The integrated especially highly stability, presents great potential behavior monitoring under certain extreme conditions.
Language: Английский
Citations
347ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(7), P. 8704 - 8712
Published: Jan. 23, 2020
Excellent electromagnetic interference (EMI) shielding ability, light weight, and good heat resistance are highly required for practical applications of EMI materials, such as in areas aerospace, aircraft, automobiles. Herein, a lightweight robust carbon nanotube (CNT)/polyimide (PI) foam was developed efficient heat-resistant shielding. Thanks to poly(vinyl pyrrolidone) (PVP) surfactant that not only promotes the uniform dispersion CNTs form perfect CNT conductive networks but also can be removed situ during polymerization process, density resultant CNT/PI is 32.1 mg·cm-3, effectiveness (EMI SE) up 41.1 dB, which represents one highest SE values compared previously reported polymer-based foams. The achieves absorption coefficient (A) 82.3%, very impressive CNT/polymer foams at comparable levels. PI matrix endows with excellent resistance. as-prepared presents higher than 35 dB even after being subjected flame an alcohol burner. Moreover, compressive strength modulus 240.9 323.9 kPa. These results indicate its certain application potential harsh requirement aeronautics aerospace industries material.
Language: Английский
Citations
292Science Bulletin, Journal Year: 2020, Volume and Issue: 65(11), P. 899 - 908
Published: Feb. 25, 2020
Language: Английский
Citations
281Science Bulletin, Journal Year: 2021, Volume and Issue: 66(18), P. 1849 - 1857
Published: April 28, 2021
Language: Английский
Citations
253Journal of Materials Chemistry A, Journal Year: 2020, Volume and Issue: 8(40), P. 21131 - 21141
Published: Jan. 1, 2020
Flexible conductive MXene/cellulose nanocrystal coated polyurethane nonwoven fabrics were designed and developed for wearable strain/pressure sensors with tunable sensing performance.
Language: Английский
Citations
225Advanced Composites and Hybrid Materials, Journal Year: 2022, Volume and Issue: 5(3), P. 1939 - 1950
Published: July 19, 2022
Language: Английский
Citations
194Research, Journal Year: 2020, Volume and Issue: 2020
Published: Jan. 1, 2020
Electronic
skin
is
driving
the
next
generation
of
cutting-edge
wearable
electronic
products
due
to
its
good
wearability
and
high
accuracy
information
acquisition.
However,
it
remains
a
challenge
fulfill
requirements
on
detecting
full-range
human
activities
with
existing
flexible
strain
sensors.
Herein,
highly
stretchable,
sensitive,
multifunctional
sensors
based
MXene-
(Ti
3
C
2
T
Language: Английский
Citations
179