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Of these materials, lubricious gels capable of being manufactured into objects with arbitrary, controllable shapes can exhibit superb adaptability to complex working environments and broader materials design freedoms, but still remain challenging for a number of oleogel and hydrogel systems. Herein, by exploiting a nanoparticle surfactant assembled using N\u2010isopropylacrylamide\u2010methacrylic acid copolymerized nanogel and diamine\u2010terminated polydimethylsiloxane, which can yield near\u2010zero oil\/water interfacial tensions and high\u2010strength interfacial films, as both an emulsifier and physical crosslinker, highly stable, viscoelastic, shear\u2010thinning and thixotropic water\u2010in\u2010oil Pickering emulsion gels available for creating various high\u2010resolution 3D\u2010printing patterns and architectures with long\u2010term structural stability and swelling resistance as well as providing favorable macroscale lubrication both in air and under water, can be fabricated. And their lubricious property can be maintained for at least 400\u00a0000 continuous reciprocating friction cycles. Further building on the temperature\u2010 and pH\u2010controlled reversible assembly of the nanoparticle surfactant, effective shape reconfigurations of the printed gel macrostructures and multilevel switched frictional behavior of the gels can be achieved. Our study may provide new indications for developing novel, versatile, smart, and adaptive soft materials.<\/jats:p>","DOI":"10.1002\/smll.202512282","type":"journal-article","created":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T08:50:13Z","timestamp":1765788613000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["4D\u2010Printable, Smart Lubricious Pickering Emulsion Gels Fabricated with Reversibly Assembled Nanogel Surfactants"],"prefix":"10.1002","volume":"22","author":[{"given":"Yu","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering Ludong University  Yantai 264025 China"},{"name":"State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences  Lanzhou 730000 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yujie","family":"Yang","sequence":"additional","affiliation":[{"name":"Shandong 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