Bioinspired hierarchical polydimethylsiloxane/polyaniline array for ultrasensitive pressure monitoring

Recent progress in flexible pressure sensors based on multiple microstructures: from design to application

“…This makes it possible for PSs to detect micro-pressure at both micro-and nano-scales, greatly enhancing the sensing performance of the sensor. [97][98][99] Currently, hierarchical micropatterned structures mainly include some regular micropatterned structures, 70,100 natural microstructures, [101][102][103][104] and irregular spinal microstructures. [105][106][107] For example, Zhu et al successfully grew vertical AuNW coatings on ordered pyramidal microarrays of polydimethylsiloxane (PDMS) films (Fig.…”

“…3.2.2.1 Multi-layered micropatterned structures. Depending on the orientation of the micropatterned structure layers, multilayered micropatterned structures can be subdivided into codirectional stacking structures, 126,128 interlocked structures, 72,103,105,[129][130][131][132][133][134] and multilayer interlocked structures. 135,136 For example, a PS was fabricated by stacking reactive ionic films prepared by the sandpaper template method (Fig.…”

“…This makes it possible for PSs to detect micro-pressure at both micro- and nano-scales, greatly enhancing the sensing performance of the sensor. 97–99 Currently, hierarchical micropatterned structures mainly include some regular micropatterned structures, 70,100 natural microstructures, 101–104 and irregular spinal microstructures. 105–107…”

Carbon Black/Multi-Walled Carbon Nanotube-Based, Highly Sensitive, Flexible Pressure Sensor

“…In the past few decades, researchers have chosen a wide range of materials such as carbon nanotubes (CNTs), , MXene, graphene, Ag nanowires, polyaniline (PANI), and polypyrrole (PPy) , as active materials. Various sophisticated microstructures, including single uniform micro-nano structures, biomimetic structures, porous structures, and so on, have been used to enhance the performance of sensors. For instance, Zhong et al fabricated e-skin devices by two-interlocking elastic patterned nanofibrous membranes using in situ oxidative chemical polymerization, a replication imprinting method, and a solvent evaporation method .…”

An ultra-thin flexible wearable sensor with multi-response capability prepared from ZIF-67 and conductive metal–organic framework composites for health signal monitoring

“…7 Although significant progress has been made in the fabrication of high-performance pressure sensors, measuring and quantifying tiny contact pressure are still a challenge. [8][9][10] With the rapid development of advanced electronics/materials and manufacturing, the process of improving sensor sensitivity includes not only the design of sensor microstructures (interlocked and outer micropyramid arrays, [11][12][13] and sandpaper microstructure [14][15][16] ), but also the preparation of various conductive materials. [17][18][19] Furthermore, it is also the simplest method to prepare microstructure by replicating some favorable microstructure through elastomers, and effective new results have been obtained.…”