Farming‐Inspired Continuous Fabrication of Grating Flexible Transparent Film with Anisotropic Conductivity

Abstract

Flexible transparent conductive films (FTCFs) are critically important for the emerging flexible electronic devices. To this end, FTCFs with conductive gratings have drawn more interests in the past decades. However, there are great challenges to fabricate such FTCFs containing conductive gratings in a facile way. Borrowing the idea from traditional farming, a homemade roll‐to‐roll plowing technique combined with blade coating is proposed to fabricate silver grating FTCFs with anisotropic conductivity in a continuous, cost‐effective, and environmental friendly way. The as‐prepared FTCFs exhibit satisfied optical and electrical properties (i.e., transmittance is 78.2% and sheet resistance is 3.1 Ω □–1). After coated with thin polyvinyl butyral layer through hot‐pressing, it shows a higher transmittance of 84.2% and remarkable mechanical flexibility. Based on the FTCFs with anisotropic conductivity, flexible transparent heater and capacitive keyboard are successfully fabricated. Furthermore, based on such flexible capacitive keyboard, smart wireless controlled human–machine interface system is developed to wirelessly control tablet personal computer working and quadrotor flying. This study provides a promising strategy to fabricate high‐performance FTCFs with anisotropic conductivity via a continuous, cost‐effective, and environmental friendly way.

Flexible Transparent Conductive Films of Ag/Cr2O3 Core–Shell Nanowires as Electrodes for Electroluminescent Devices and Heaters

“…Flexible transparent conductive films (TCFs) have wide application prospects in solarcells, − wide-band antenna, − electrochromic devices, − electroluminescent devices, − wearable sensors, − flexible heaters, − light emitting diodes, − etc. Due to their excellent optical-electrical performances, mechanical flexibility, simple and diverse preparation methods, and the ability to be deposited on different substrates, silver nanowires (Ag NWs) have become a common research material for the preparation of TCFs and are an important part of the next generation of flexible optoelectronic devices.…”

Electrospun dual-aeolotropic conductive exceptive Janus membrane and Janus tubule functionalized by up-/down-converting fluorescence and magnetism

“…[1][2][3][4][5] These materials are widely applied in high-tech industries, including electronic packing, oil/water separation, novel electrode materials, membrane filtration, and biosensors due to their anisotropic conductivity. [6][7][8][9] To date, several ACFs have been reported, including one ACF type, which conducts electricity along the thickness direction and insulates along the surface, named as type-I ACF, and another ACF type, which has two different conductivity values along two vertical directions on the film surface, named as type-II ACF. However, matching type-II ACF to electronic devices in the market remains a huge challenge, mainly because research on it to date only exists at the laboratory stage.…”