NATURE
·
2025
·Vol. 647
·期 8091
·889-896
·
IF 48.5
Xue Yaoting,Cao Jiasheng,Feng Tao,Zhang Kaihang,Li Siyang,Hu Jiahao,Guo Haotian,Zhang Jinming,Song Yaoxian,Wang Zhuofan,Wang Lei,Huang Qishan,Zhou Haofei,Zhou Fanghao,Shen Jiliang,Fan Yaowei,Wang Zhe,Li Xinge,Wong Jie-Wei,Chen Zhiwei,Ruan Dongrui,Miao Zhikun,Zhang Bin,Zhou Enjie,Gan Letian,Wang Xuanqi,Cao Ertai,Chen Tong,Zou Weifeng,Zhang Junhui,Lu Haojian,Zhang Qinghai,Liu Song,Dong Huixu,Xiong Shiying,Peng Shuyou,Wong Tuck-Whye,Chen Yuanjie,Li Tiefeng,Chen Mingyu,Yang Xuxu,Yang Wei,Cai Xiujun
Mechanical transmission is essential in force-related activities ranging from the daily tying of shoe laces 1 to sophisticated surgical 2 and robotic operations 3 , 4 . Modern machines and robots typically use complex electronic devices designed to sense and limit force 5 , some of which still face challenges when operating space is limited (for example, in minimally invasive surgeries) 6 or when resources are scarce (for example, operations in remote areas without electricity). Here we describe an alternative slipknot-based mechanical transmission mechanism to control the intelligent operation of both human and robotic systems. Through topological design, slipknot tying and release can encode and deliver force with a consistency of 95.4% in repeating operations, which circumvents the need for additional sensors and controllers. When applied to surgical repair, this mechanism helped inexperienced surgeons to improve their knotting-force precision by 121%, enabling them to perform surgical knots as good as those of experienced surgeons. Moreover, blood supply and tissue healing after surgery were improved. The mechano-intelligence exhibited in slipknots may inspire investigations of knotted structures across multiple length scales. This slipknot-gauged mechanical transmission strategy can be widely deployed, opening up opportunities for resource-limited healthcare, science education and field exploration.
研究领域:
机械工程
·
机器人学
·
生物医学工程
·
手术技术
·
智能材料与结构
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Chenchen Zhou,Jia Man,Jianyong Li,Bin Qi,Zesheng Hua,Chenxu Liu,Minyi Zhang,Jianfeng Li
Anisotropic ceramic microparticles have been extensively studied in various fields such as mechanical transmission, wave absorbing, structural materials, and abrasives owing to their remarkable properties. The shape of the microparticles plays an important role in their functions. Here, we presented a facile and tunable microfluidic approach to fabricate the ceramic microparticles (∼370 μm in diameter) with the bowl shape, which have been quite challenging for synthesizing to date. Double UV lights were applied to shape the microparticles. By tailoring the cross angle and the intensities of both UV lights, bowl-shaped ceramic microparticles with different opening sizes (0–340 μm) and hollow spherical ceramic microparticles with different-sized through-holes ( f = 0–0.265) were fabricated. These obtained ceramic microparticles hold great potentials to be used as the micro-components in sewage filters, micro ball valves, MEMS , micro-robots, and so forth.
研究领域:
材料科学
·
微流控技术
·
纳米技术
·
机械工程
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）