当前位置:
X-MOL 学术
›
Adv. Intell. Syst.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Micromotors with Spontaneous Multipattern Motion and Microvortex for Enhanced “On-the-Fly” Molecule Enrichment
Advanced Intelligent Systems ( IF 6.8 ) Pub Date : 2023-09-08 , DOI: 10.1002/aisy.202300386
Jinwei Lin 1 , Kang Xiong 1 , Junyi Hu 1 , Zhengshang Li 1 , Leilei Xu 1, 2 , Jianguo Guan 1, 2
Advanced Intelligent Systems ( IF 6.8 ) Pub Date : 2023-09-08 , DOI: 10.1002/aisy.202300386
Jinwei Lin 1 , Kang Xiong 1 , Junyi Hu 1 , Zhengshang Li 1 , Leilei Xu 1, 2 , Jianguo Guan 1, 2
Affiliation
![]() |
“On-the-fly” molecule enrichment by micro/nanomotors obviously improves heterogeneous catalysis, trace detection, and environmental monitoring, yet faces challenges of the trade-off between collection range and interaction time. Inspired by the versatile foraging process of predators, this work demonstrates that micromotors doing spontaneous multipattern motion with microvortex can greatly enhance “on-the-fly” enrichment, demonstrated by highly sensitive surface-enhanced Raman scattering detection. It leverages an axis-asymmetric bowl-shaped structure and the nonlinear Ag–AgCl reaction, realizing alternating low-velocity swinging forward and accelerated steering motions for prolonged interaction and large work area. Moreover, the bowl-shaped microstructure bestows a micro-vortex above the Ag side due to the competition of electric potential and pressure gradient, also extending interaction time during the acceleration. Consequently, it exhibits at least an order of magnitude larger enhancement of detection signals than the counterparts. This proof-of-concept study highlights the significance of motion mode and structure design in guiding flow field, offering substantial benefits for applications.
中文翻译:
具有自发多模式运动和微涡流的微电机,可增强“动态”分子富集
通过微/纳米电机进行的“即时”分子富集明显改善了异相催化、痕量检测和环境监测,但面临着收集范围和相互作用时间之间权衡的挑战。受捕食者多功能觅食过程的启发,这项工作表明,利用微涡进行自发多模式运动的微电机可以极大地增强“飞行中”的富集,这一点通过高灵敏度的表面增强拉曼散射检测得到了证明。它利用轴不对称碗形结构和非线性Ag-AgCl反应,实现交替低速向前摆动和加速转向运动,以实现长时间交互和大工作区域。此外,由于电势和压力梯度的竞争,碗形微结构在Ag面上方赋予了微涡流,也延长了加速过程中的相互作用时间。因此,它表现出比同类产品至少大一个数量级的检测信号增强。这项概念验证研究强调了运动模式和结构设计在引导流场中的重要性,为应用提供了巨大的好处。
更新日期:2023-09-08
中文翻译:

具有自发多模式运动和微涡流的微电机,可增强“动态”分子富集
通过微/纳米电机进行的“即时”分子富集明显改善了异相催化、痕量检测和环境监测,但面临着收集范围和相互作用时间之间权衡的挑战。受捕食者多功能觅食过程的启发,这项工作表明,利用微涡进行自发多模式运动的微电机可以极大地增强“飞行中”的富集,这一点通过高灵敏度的表面增强拉曼散射检测得到了证明。它利用轴不对称碗形结构和非线性Ag-AgCl反应,实现交替低速向前摆动和加速转向运动,以实现长时间交互和大工作区域。此外,由于电势和压力梯度的竞争,碗形微结构在Ag面上方赋予了微涡流,也延长了加速过程中的相互作用时间。因此,它表现出比同类产品至少大一个数量级的检测信号增强。这项概念验证研究强调了运动模式和结构设计在引导流场中的重要性,为应用提供了巨大的好处。