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Herein, we report a synergistic multiscale architecture featuring a polydimethylsiloxane\/multi\u2010walled carbon nanotube\u00a0\u00a0nanocomposite dielectric, asymmetrically patterned with nanogratings and irregular micro\u2010protrusions, paired with an electrospun thermoplastic polyurethane nanofibrous network acting as an elastic buffer. By decoupling stress distribution mechanisms, this hierarchical design optimizes performance across all pressure regimes. At low pressures, the nanogratings induce severe localized stress to rapidly activate the percolation effect, maximizing initial sensitivity. Conversely, at high pressures, the micro\u2010protrusions and TPU layer progressively redistribute stress, effectively delaying mechanical saturation. Consequently, the sensor delivers an ultrahigh initial sensitivity of 12.34 kPa\n                    <jats:sup>\u22121<\/jats:sup>\n                    across a broad 200\u00a0kPa working range, alongside rapid response (&lt;30\u00a0ms) and robust durability (&gt;5000 cycles). Demonstrating exceptional versatility in precise joint kinematic tracking, robotic grasping, and spatial pressure mapping, this structural engineering strategy establishes a compelling paradigm for next\u2010generation flexible sensors in smart healthcare and human\u2013machine interfaces.\n                  <\/jats:p>","DOI":"10.1002\/smll.74844","type":"journal-article","created":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T12:23:36Z","timestamp":1785241416000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Nanograting and Micro\u2010Protrusions Synergistic Dielectric Responses in Flexible Pressure Sensors for Ultrawide\u2010Range Human\u2013Machine Perception"],"prefix":"10.1002","volume":"22","author":[{"given":"Qixiang","family":"Luo","sequence":"first","affiliation":[{"name":"Institute of Smart City and Intelligent Transportation Southwest Jiaotong University  Chengdu 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