Dual-mode pressure/magnetic sensors have recently become of great interest to the research community. The sensors can provide real-time monitoring of the surrounding environment through contact mode, non-contact mode, or a combination of both. However, straightforward construction a pressure/magnetic dual mode sensor remains a great challenge. In this study, carbon/reduced graphene oxide/Fe₃O₄ (CRF) carbon composite aerogel was facilely and innovatively prepared via a Pickering emulsion method using freeze drying and thermal annealing techniques. The effects of the concentration ratio of cellulose nanofibers (CNF) to graphene oxide (GO) and the concentration of Fe₃O₄ were studied against the mechanical, insulate and sensing performances of carbon aerogels. Due to its electrically conductive pathways and highly elastic deformation capacity as well as the successful composite of Fe₃O₄ nanoparticles, the flexible pressure/magnetic sensor based on C2R3F1 has a sensitivity of 8.6 kPa⁻¹ and 3.9 kPa⁻¹ for the ranges of 0–400 Pa and 400–1600 Pa, respectively, and a magnetic field sensitivity of 2.8 T^-1 in the 0–50 mT range. Thus, utilizing the responding of the CRF to both the external pressure and magnetic field, by recording current signal or controlling the current switch on-off, the CRF as a double model sensor can realize the monitoring for movement of bodies and the remote control.

双模式压力/磁传感器最近引起了研究界的极大兴趣。传感器可以通过接触模式、非接触模式或两者的结合来提供对周围环境的实时监测。然而，直接构建压力/磁性双模式传感器仍然是一个巨大的挑战。本研究采用皮克林乳液法，采用冷冻干燥和热退火技术，简便创新地制备了碳/还原氧化石墨烯/Fe ₃ O _{4 (CRF) 碳复合气凝胶。}纤维素纳米纤维（CNF）与氧化石墨烯（GO）浓度比和Fe ₃ O _{4浓度的影响}针对碳气凝胶的机械、绝缘和传感性能进行了研究。由于其导电通路和高弹性变形能力以及 Fe ₃ O ₄纳米粒子的成功复合，基于 C2R3F1 的柔性压力/磁传感器在以下范围内具有 8.6 kPa ^-1和 3.9 kPa ^-1的灵敏度分别为 0–400 Pa 和 400–1600 Pa，磁场灵敏度为 2.8 T ^-1在 0–50 mT 范围内。因此，利用CRF对外界压​​力和磁场的响应，通过记录电流信号或控制电流开关的通断，CRF作为双模传感器可以实现对人体运动的监测和遥控。