Transparent
conductive film (TCF) is promising for optoelectronic
instrument applications. However, designing a robust, stable, and
flexible TCF that can shield electromagnetic waves and work in harsh
conditions remains a challenge. Herein, a multifunctional and flexible
TCF with effective electromagnetic interference shielding (EMI) performance
and outstanding electro-photo-thermal effect is proposed by orderly
coating Ti3C2T
x
MXene
and a silver nanowire (AgNW) hybrid conductive network using a simple
and scalable solution-processed method. Typically, the air-plasma-treated
polycarbonate (PC) film was sequentially spray-coated with MXene and
AgNW to construct a highly conductive network, which was transferred
and partly embedded into an ultrathin poly(vinyl alcohol) (PVA) film
using spin coating coupled with hot pressing to enhance the interfacial
adhesion. The peeled MXene/AgNW-PVA TCF exhibits an optimal optical
and electrical performance of sheet resistance 18.3 Ω/sq and
transmittance 52.3%. As a consequence, the TCF reveals an effective
EMI shielding efficiency of 32 dB in X-band with strong interfacial
adhesion and satisfactory flexibility. Moreover, the high electrical
conductivity and localized surface plasmon resonance (LSPR) effect
of hybrid conductive network endow the TCF with low-voltage-driven
Joule heating performance and excellent photothermal effect, respectively,
which can ensure the normal functioning under extreme cold condition.
In view of the comprehensive performance, this work offers new solutions
for next-generation transparent EMI shielding challenges.
Various electrochemical biosensors
have been developed for direct
and real-time recording of biomolecules released from living cells.
However, since these traditional electrodes are commonly rigid and
nonflexible, in situ monitoring of biochemical signals while cell
deformation occurs remains a great challenge. Herein, we report a
facile approach for the development of a stretchable and transparent
electrochemical cell-sensing platform based on Au nanostructures (nano-Au)
and carbon nanotube (CNT) films embedded in PDMS (nano-Au/CNTs/PDMS).
The sandwich-like nanostructured network of nano-Au/CNTs endows the
sensor with excellent mechanical stability and electrochemical performance.
The obtained nano-Au/CNTs/PDMS electrode displays desired performance
for H2O2 detection with a wide linear range
(20 nM–25.8 μM) and low detection limit (8 nM). Owing
to good biocompatibility and flexibility, HeLa and human umbilical
vein endothelial cells can be directly cultured on the electrode and
real-time monitoring of H2O2 release from cells
under their stretched state was realized. The proposed strategy demonstrated
in this work provides an effective way for design of stretchable sensors
and more opportunities for sensing biomolecules from mechanically
sensitive cells.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.