Dual-Mode Carbon Aerogel/Iron Rubber Sensor

Abstract

Nowadays, the integration of easy production, simple structure, high sensitivity, and multifunctionality is the developing tendency for flexible sensors. Herein we report a facile manufacture of a highly flexible, sensitive, and multifunctional dual-mode sensor with an ultrasimple structure by directly attaching magnetic iron rubber (IR) onto the surface of carbon aerogel (CA) derived from melamine foam. The dual-mode CA/IR sensor exhibits high sensitivities of 5.6 kPa–1 and 1.6·10–3 Oe–1, respectively, toward pressure and magnetic field in a wide frequency ranging from 0.1 to 10 Hz, which are higher than those of the existing flexible pressure/magnetism sensors. The multifunctionality of the dual-mode CA/IR sensor is demonstrated by monitoring blood pulse, human breath, balloon volume, and thoracic volume via pressure and magnetism sensing or their combination. Due to its simple structure and high sensitivities, the dual-mode sensor is employed as the building block to create a direction-recognizable sensor for identifying the directions of pressure and magnetic field for the awareness of surrounding barriers that are of practical importance in sophisticated situations such as autonomous artificial intelligence, autodriving and robotics, and so on.

High-Sensitivity Capacitive Flexible Tactile Sensor Based on Hemispherical Shell Microstructure and ZnO/RTV Composite Dielectric Layer

“…35 As depicted in Figure 6c, the respiratory rate (breathing) of healthy volunteers aged 24 was monitored using a sensor attached to their masks. 36 The nano-ZnOmodified RTV hemispherical shell structure sensor enables continuous and reliable detection of human breathing, facilitating the monitoring and early detection of any changes in breathing patterns that may indicate severe respiratory diseases such as asthma, bronchitis, cardiac arrest, and sleep apnea, among others (Figure 6c). Additionally, our sensor demonstrates its capability to detect arm muscle movements by capturing the change in the capacitive signal when the arm is straightened or flexed (Figure 6d).…”

Non‐Invasive Flexible Electro‐Mechanical Sensors for Human Respiratory Monitoring and Chronic Disease Management

“…The intensity and curve shape of the current response can be used to analyze the chest condition for further disease diagnosis. [ 148 ]…”

Thermocatalytic Conversion of CO2 to Valuable Products Activated by Noble‐Metal‐Free Metal‐Organic Frameworks

“…With the forthcoming global energy crisis, hydrogenation of CO 2 has received much interest because the products are important gaseous and liquid fuels. However, one of important issues that need to be considered is the selectivity, because hydrogenation of CO 2 can produce a series of C1 and C2 products, such as CO, HCOOH, HCHO, CH 3 OH, CH 4 , C 2 H 4 , CH 3 CH 2 OH, C 2 H 6 , and so on [185–191] . Wang and co‐workers (Figure 14a) introduced Zn 2+ −O−Zr 4+ sites in MOF through postsynthetic treatment of [Zr 6 ] nodes of MOF‐808, [192] and constructed a new noble‐metal‐free catalyst MOF‐808‐Zn‐ x .…”