Triboelectric pressure sensors with high sensitivity, broad linear range, and robust mechanical durability are critical for next-generation wearable human–machine interfaces. In this study, we present a microneedle-based triboelectric pressure sensor (MN-TPS) fabricated via a scalable additive manufacturing strategy that synergistically integrates jet printing and magnetic field-assisted stretching methods. This approach enables precise, controllable, and cost-effective fabrication of high-aspect-ratio microneedle array with tunable morphology. The optimized MN-TPS delivers an open-circuit voltage of 17.49 V under a 20 N force at 4 Hz, achieving a high-pressure sensitivity of 0.10 V/kPa at low regime (0-100 kPa) and maintaining linearity over an ultrawide range up to 400 kPa. Leveraging its fast response, we further integrate nine MN-TPS units into a wireless wearable interactive platform capable of real-time robotic control and dynamic trajectory recognition. This work bridges advanced microfabrication with practical human–machine interaction, establishing a versatile and generalizable platform for next-generation electronic skins, soft robotics, and intelligent wearable systems.

Magnetically responsive microstructured functional surface (MRMFS), capable of dynamically and reversibly switching the surface topography under magnetic actuation, provides a wireless, noninvasive, and instantaneous way to accurately control the microscale engineered surface. In the last decade, many studies have been conducted to design and optimize MRMFSs for diverse applications, and significant progress has been accomplished. This review comprehensively presents recent advancements and the potential prospects in MRMFSs. We first classify MRMFSs into one-dimensional linear array MRMFSs, two-dimensional planar array MRMFSs, and dynamic self-assembly MRMFSs based on their morphology. Subsequently, an overview of three deformation mechanisms, including magnetically actuated bending deformation, magnetically driven rotational deformation, and magnetically induced self-assembly deformation, are provided. Four main fabrication strategies employed to create MRMFSs are summarized, including replica molding, magnetization-induced self-assembly, laser cutting, and ferrofluid-infused method. Furthermore, the applications of MRMFS in droplet manipulation, solid transport, information encryption, light manipulation, triboelectric nanogenerators, and soft robotics are presented. Finally, the challenges that limit the practical applications of MRMFSs are discussed, and the future development of MRMFSs is proposed.