Multiprocess Laser Lifting‐Off for Nanostructured Semiconductive Hydrogels

Abstract Semiconductive hydrogels denote a strategically valuable platform associated with interdiscipline fields by double advantages of metals and organisms (eco‐friendliness, structural flexibility, mixed conduction, real‐time responsiveness, scalable fabrication, chemical stability). Nevertheless, the orthodox chemical/physical methods processing yield planar‐like layers or rough structures without ultrafine feature size manipulative performance, falling short µ‐robotics, µ‐electronics, n‐energy industries. Thereby, scaling device's volume down unleashing material's potential become crucially important for broadband applications. A femtosecond laser lifting‐off technique is synthesized self‐assembly to break conventional volume/resolution limitation, enlarge geometry‐design capacity, desirable electricity conduction micro/nanosituations. Low‐dimensional high‐performance nanowires, electric circuits, ultrathin interdigital capacitors, photon filters, metasurfaces are functionalized here. The repeated experiment concludes high‐density integration ability subminiature 10 × 0.02 µm 3 , tunable conductivity up 1.17 5 S m −1 areal capacitance >16.2 mF cm −2 energy storage higher than those electrochemical double‐layer ones. Large geometry capacity nanometric resolution provides access future‐perspective optoelectronic products, n‐energy, bioneural recordings, interfaces embedding conditions.