2026-10-12T10:54:08Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33728289 2026-09-14T10:05:57Z category_1 category_146 category_915 category_21 category_873 category_734 category_931 category_69 portal_63 item_type_2 month_year_09_2026

Direct Laser Printing of 3D Porous Ni(OH)₂/NiO Microarchitectures via Confined Interfacial Nucleation Wenxiang Hou (22304096) Yusheng Zhang (1982449) Xuefei Chen (470026) Xun Wang (138298) Dayu Li (456848) Wendai Cheng (17083327) Xixi Gong (24874827) Qu Wang (15247127) Ruofan Huang (655659) Guanyuan Su (22772108) Chunmei Zhang (67508) Liang Yang (15035) Biophysics Space Science Physical Sciences not elsewhere classified Biotechnology Chemical Sciences not elsewhere classified Biological Sciences not elsewhere classified Information Systems not elsewhere classified Inorganic Chemistry yet precise control sensing responses compared reaction kinetics governing oh )< sub microscale device fabrication enhanced sensing performance confined interfacial nucleation allowing conformal integration programmable porous structures complex 3d geometries high spatial resolution direct laser printing 3d porous ni programmable approach printed ni work presents widely used resulting microstructures precision manufacturing precisely controlled oxide microdevices nonporous counterparts metal hydroxides mass transport major challenge hydroxide microstructures hierarchical growth heat transfer functional metal flexible construction electrochemical devices coupled mechanisms Transition-metal hydroxides and oxides are widely used in optoelectronic and electrochemical devices, yet precise control over their three-dimensional (3D) microarchitecture and morphology remains a major challenge for microscale device fabrication. Here, we report a laser-confined interfacial nucleation and hierarchical growth (LCING) strategy that enables direct laser printing of Ni(OH)₂/NiO microarchitectures with high spatial resolution and programmable porous structures. The localized photothermal field drives interfacial nucleation and hierarchical growth, allowing conformal integration of hydroxide microstructures and flexible construction of complex 3D geometries. We further elucidate the coupled mechanisms of mass transport, heat transfer, and reaction kinetics governing the LCING process. By rationally tuning laser printing parameters, the morphology and porosity of the resulting microstructures can be precisely controlled. The printed Ni(OH)₂/NiO microdevices enable high-resolution structural color patterning and enhanced sensing performance, with the 3D porous Ni(OH)₂/NiO architectures showing improved gas-sensing responses compared with lower-dimensional and nonporous counterparts. This work presents a versatile and programmable approach for high-precision manufacturing of functional metal-oxide microdevices. 2026-09-14T00:00:00Z Dataset Media 10.1021/acsnano.6c12269.s003 https://figshare.com/articles/media/Direct_Laser_Printing_of_3D_Porous_Ni_OH_sub_2_sub_NiO_Microarchitectures_via_Confined_Interfacial_Nucleation/33728289 CC BY-NC 4.0