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Nano-Micro Letters · 2025 ·Vol. 18 ·期 1 ·1-18 · IF 36.3

Octopus-Inspired Self-Adaptive Hydrogel Gripper Capable of Manipulating Ultra-Soft Objects

Wang Yixian,Liu Desheng,Hu Danli,Wang Chao,Li Zonggang,Wu Jiayu,Jiang Pan,Yang Xingxing,Bai Changcheng,Ji Zhongying,Jia Xin,Wang Xiaolong

Section Highlights 3D printable supramolecular hydrogels with tunable mechanical properties and stiffness adaptability were enabled by strong and weak H-bonding cooperative interactions and microphase separation. Sucker structure with an alterable membrane was designed and fabricated with 3D printing to realize reliable and gentle switchable adhesion. Octopus-inspired hydrogel gripper that is capable of delicately handling ultra-soft underwater objects in the form of nondestructive surface release was achieved.

CAS / MDL: 1934-21-0 584-08-7

研究领域: 生物医学工程 · 软体机器人 · 高分子材料 · 仿生学 · 组织工程 · 智能材料 · 界面科学

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JOURNAL OF COLLOID AND INTERFACE SCIENCE · 2025 · IF 9.7

Flexible and low-temperature-resistant double-network hydrogel with a bionic octopus-tentacle-like structure for integrated supercapacitor and nanogenerator sensor fabrication

Yuanhong Shang,Chunlin Liu,Jinfeng Tian,Ruifeng Zhou,Qin Hu,Xiaodan Sun

Flexible and stretchable hydrogels are important components of flexible electronics; however, they are typically easily detached upon repeated high-strain stretching because of their smooth surfaces and cannot be used at subfreezing temperatures because of ice formation. To address these shortcomings, we prepared a low-temperature-resistant and flexible double-network hydrogel with a bionic octopus-tentacle-like structure composed of polyvinyl alcohol and sodium alginate. We also verified its suitability for developing high-performance, flexible, stretchable, and environmentally durable supercapacitors and nanogenerator sensors. The influence of melting temperature on the hydrogel’s surface morphology decreased the interfacial resistance. The fabricated supercapacitor demonstrated exceptional performance, with 1326.5 mF cm −2 (areal capacitance) at 1 mA cm −2 , a maximum energy and power densities of 172.3 μWh cm −2 , and 708.6 mW cm −2 , respectively, outperforming most integrated supercapacitors previously reported. The corresponding nanogenerator sensor demonstrated outstanding suitability for energy harvesting and low-temperature sensing, with potential applications in underwater information transmission using international Morse code. The results of this study paves the way for the fabrication of intelligent wearable electronics and solves the problems associated with the fabrication of flexible and low-temperature-resistant hydrogels.

CAS / MDL: 10025-77-1 109-97-7 1303-96-4 1655-45-4 7783-20-2 9002-89-5 9005-38-3

研究领域: 材料科学 · 生物医学工程 · 能源技术

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Octopus-Inspired Self-Adaptive Hydrogel Gripper Capable of Manipulating Ultra-Soft Objects

Flexible and low-temperature-resistant double-network hydrogel with a bionic octopus-tentacle-like structure for integrated supercapacitor and nanogenerator sensor fabrication