One‐dimensional electrospun ceramic nanomaterials and their sensing applications

Abstract

One-dimensional sensing materials that are prepared via electrospinning and controlled annealing exhibit intrinsic properties, such as electron transmissivity, magnetic susceptibility, specific heat capacity, as well as optical and mechanical characteristics. Particularly, the electronic transmission characteristics of the ceramic fiber materials, such as the electrical conductivity, photocurrent, magnetoresistance, nanocontact resistance, and dielectric properties, exhibited great potential for applications in the next generation of electronic sensing devices.First, electrospun ceramic materials with different structural and functional characteristics were reviewed here, after which the strategies for improving their properties, as well as the method for assembling the flexible devices, are summarized. Moreover, the electrospun ceramic nanofibers were detailedly discussed regarding applications in device construction and wearable electronics, such as photosensors, gas sensors, mechanical sensors, and other energy storage devices.Finally, the future development direction of the electrospinning technology for multifunctional and wearable electronics skin was proposed.

Metal–Organic Framework-Derived Porous Hollow Co3O4/ZnO Nanofibers for H2S Sensing

“…The hollow fibers have a high specific surface area and voids between the fibers, which benefits gas passage to enhance the sensor contact with target gases and reduce the charge-transfer time. Electrostatic spinning is a widely used technique to prepare hollow fibers. − …”

High Toughness Combined with High Strength in Oxide Ceramic Nanofibers

“…Furthermore, the oxide ceramic fibers also combine high‐temperature resistance and good photoelectric properties of oxide ceramics with the excellent thermal/electrical transport characteristics of fibers, and play a vital role in automotive, aerospace, and energy conversion systems. [ 7–10 ] The current methods for preparing oxide ceramic fibers, including melting method, impregnation method, and sol–gel method, generally obtain fibers with diameters of several to dozens of micrometers, and their mechanical properties, particularly toughness, are still not satisfactory. [ 11–13 ] In order to highlight the merits of 1D structure of fibers, researchers are committed to further refining the fiber diameter to obtain oxide ceramic nanofibers with larger aspect ratios.…”

Manipulating mechanical properties of CaTiO3:Eu3+ flexible fiber membrane by fiber design

“…This multileveled structure allows for the formation of functional primitive structures, such as ordered, gradient, and disordered structures 19–23 . These functional primitive structure will bring excellent macro properties to the material, such as mechanical, electrical, optical, and thermal properties, including high piezoelectric coefficient, catalytic efficiency, electrochemical performance, and efficient photothermal conversion 24–31 . The effect of functional element structure on the mechanical properties of fiber materials is mainly related to the control ability of electrospinning.…”

“…[19][20][21][22][23] These functional primitive structure will bring excellent macro properties to the material, such as mechanical, electrical, optical, and thermal properties, including high piezoelectric coefficient, catalytic efficiency, electrochemical performance, and efficient photothermal conversion. [24][25][26][27][28][29][30][31] The effect of functional element structure on the mechanical properties of fiber materials is mainly related to the control ability of electrospinning. In the ceramic fiber membrane system prepared by electrospinning, it is necessary to think over the structure problem of crystallites as fiber primitives and the structure of fiber as membrane primitives.…”