Biologically imitated capacitive flexible sensor with ultrahigh sensitivity and ultralow detection limit based on frog leg structure composites via 3D printing

Laser‐Induced Hierarchical Microcone Arrays for Flexible Tactile Sensors with High Sensitivity and Ultrabroad Detection Range

“…Hence, our DLCTS possesses not only excellent sensitivity but also an ultrabroad sensing range of pressure, which goes beyond the previously reported literatures (Figure 4f ). [37][38][39][40][41][42][43][44][45][46][47] The long-term working performance of DLCTS was characterized by continuously applying a fixed pressure of 40 kPa in nearly 5500 cycles (Figure 4g). Despite the existence of slight wear and tear on the surface of the dielectric layer at microscale (Figure S5, Supporting Information), the sensor output capacitance signal still remained stable, indicating its good durability and stability.…”

Capacitive Sensors with Hybrid Dielectric Structures and High Sensitivity over a Wide Pressure Range for Monitoring Biosignals

“…With the development of advanced IoT technology, intelligent medical sensors which can realize the monitoring of various biosignals are increasingly vital for the early diagnosis or prevention of disease. Flexible pressure sensors have come into the limelight due to their broad application prospects in electronic skin, health monitoring, human–machine interfaces, and IoTs. − Many extensive efforts have been devoted to develop high-performance flexible pressure sensors based on different transmission mechanisms, such as piezoresistive, − piezoelectric, , capacitive, − and triboelectric sensors. , Among these varied types of sensors, capacitive pressure sensors (CPSs) are more appealing due to the advantages of the simple structure, rapid response, uncomplicated signal acquisition, easy large-area fabrication, low energy consumption, and so forth . To meet the need of multifunctional application scenarios, a lot of efforts have been made to develop flexible CPSs with high sensitivity, low detection limit, superior stability, good linearity, and broad range. − According to the formula C = ε 0 ε r A / d , causing a change in capacitance ( C ) can be realized by changing the relative permittivity of the dielectric (ε r ), the interval between two electrodes ( d ), or their relative area ( A ).…”

Structural Modification in Au-MoS2 Quantum Dot Composites for Improved Catalytic Efficiency in p-Nitrophenol Reduction

“…In this respect, heterogeneous Au catalysts have been developed . Gold may be alloyed with other metals or semiconductors to give it additional unique features to lower production costs, improve catalytic performance, and stabilize the nanocatalyst system. − Gold–semiconductor contact systems have been created and used in numerous domains among these hybrid systems. − Because molybdenum disulfide (MoS 2 ) possesses excellent catalytic, electrical conductivity, and biocompatibility features, research interest in MoS 2 among two-dimensional (2D) nanomaterials has been growing steadily. , Because of their conspicuous edges and quantum confinement effects, 2D materials exhibit unique features when reduced to zero dimensions (0D) . Compared to other MoS 2 nanostructures, MoS 2 -QDs have a larger surface-to-volume ratio and a more robust electron transport capability …”