To eliminate the complex interference encountered by pressure sensors in practical applications, we designed and fabricated a piezoresistive pressure sensor featuring wide-temperature-range adaptability to harsh environments and high anti-interference characteristics. A circuit integrating conditioning compensation function with signal conversion function was proposed to compensate and convert pressure signals, and an integrated encapsulated housing was designed and fabricated to connect the pressure sensor chip with the PCB circuit for real-time processing of pressure signals. Its anti-interference performance was primarily reflected in reducing interference to the sensor caused by environmental temperature, voltage noise, and long-distance transmission. The thermal zero drift of the pressure sensor was reduced by 88.95%, and thermal sensitivity drift by 76.17% across the temperature range from −40 ℃ to 105 ℃. When subjected to voltage noise, the signal fluctuation was reduced by 99.7% after circuit processing. When subjected to long-distance transmission, the signal degradation after circuit processing was reduced by 89.9%. The results show that the sensor’s anti-interference performance in complex real-world applications has been enhanced, resulting in more reliable output of the sensor.

Perovskite solar cells (PSCs) incorporating 2D/3D heterostructures have exhibited remarkable improvements in both power conversion efficiency and operational stability. Nevertheless, the prevalent spin-coating fabrication technique presents formidable challenges for scalable manufacturing processes. Herein, we present a blade-coating compatible methodology for fabricating high-performance 2D/3D PSCs utilizing a low-volatility t-amyl alcohol (t-AmOH) -dimethylformamide (DMF) mixed solvent system. Through systematic materials characterization and comprehensive device performance analysis, we demonstrate that this approach facilitates uniform spatial distribution of butylammonium iodide (BAI) organic spacers, thereby promoting the formation of a high-quality 2D/3D perovskite architecture characterized by enhanced crystallinity and substantially reduced defect density. The optimized device achieves a champion power conversion efficiency of 22.25% while demonstrating exceptional operational stability, retaining 83% of its initial performance after prolonged exposure under ambient conditions (45% relative humidity) for 1000 h.

Wearable devices have great application potential in the next generation of smart portable electronics, especially in the fields of medical monitoring, soft robotics, artificial intelligence, and human-machine interfaces. Piezoelectric flexible strain sensors are key components of wearable devices. However, existing piezoelectric flexible strain sensors have certain limitations in weak signal monitoring due to their large modulus and low sensitivity. To solve this problem, the concept of Kirigami (paper-cutting) was introduced in this study to design the sensor structure. By comparing the Kirigami structures of different basic structures, the serpentine structure was determined as the basic configuration of the sensor. The serpentine structure not only provides excellent tensile properties, but also significantly improves the sensitivity of the sensor, which performs well in monitoring weak signals. On this basis, the adhesion properties of the flexible sensor were analyzed and tested, and the optimal ratio of the substrate was selected for preparation. In addition, a low-cost and rapid prototyping process for stretchable patches was established in this study. Using this technology, we prepared the sensor device and tested its performance. Finally, we successfully developed a flexible sensor with a sensitivity of 0.128 mV/µɛ and verified its feasibility for wrist joint motion monitoring applications. This result opens up new avenues for the recovery care of tenosynovitis patients after surgery.

The micro-electromechanical system (MEMS) infrared thermopile is the core working device of modern information detection systems such as spectrometers, gas sensors, and remote temperature sensors. We presented two different structures of MEMS infrared thermopiles based on suspended film structures. They both deposited silicon nitride over the entire surface as a passivated absorber layer in place of a separate absorber zone, and the thermocouple strip was oriented in the same direction as the temperature gradient. The same MEMS preparation process was used and finally two different structures of the thermopile were characterized separately for testing to verify the impact of our design on the detector. The test results show that the circular and double-ended symmetrical thermopile detectors have responsivities of 27.932 V/W and 23.205 V/W, specific detectivities of 12.1×10⁷ cm·Hz^1/2·W⁻¹ and 10.1×10⁷ cm·Hz^1/2·W⁻¹, and response time of 26.2ms and 27.06ms, respectively. In addition, rectangular double-ended symmetric thermopile has a larger field of view than a circular thermopile detector, but is not as mechanically stable as a circular thermopile.