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. 2022 Nov 24;14(23):5124.
doi: 10.3390/polym14235124.

High Throughput Fabrication of Flexible Top-Driven Sensing Probe

Fei Li  1   2 , Xi Liu  1   2 , Wensheng Wang  1   2 , Haoyan Xu  1   2 , Wenlong Song  1   2 , Zhuangzhi Sun  1   2
Affiliations

High Throughput Fabrication of Flexible Top-Driven Sensing Probe

Fei Li et al. Polymers (Basel). .

Abstract

In this work, considering the current status of conservative and complicated traditional thrombosis treatment methods, a kind of flexible intelligent probe (FIP) with a top-driven sensing strategy is proposed to realize the expected function of thrombosis accurate localization in a liquid flow environment. After throughput fabrication, we find that the FIP has excellent electrical conductivity and mechanical properties. Notable, our FIP with the principle of piezo-resistive sensing has a quasi-linear sensitivity (approx. 0.325 L per minute) to flow sensing in the low flow velocity range (0-1 L per minute). Via the well-designed magnetically driven method, our FIP has a maximum deflection output force of 443.264 mN, a maximum deflection angle of 43°, and a maximum axial force of 54.176 mN. We demonstrate that the FIP is capable of completing the specified command actions relatively accurately and has a good response to real-time sensing feedback performance, which has broad application prospects in thrombus localization detection.

Keywords: flexible probe; smart materials; thrombus localization; top-driven sensing.

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Conflict of interest statement

The co-authors all declare no competing interest.

Figures

Figure 1
Figure 1
Model and characterization of the flexible intelligent probe (FIP). (a) Working model diagram of FIP, (b) Composition model diagram of FIP, (c) SEM images of cross-section of the piezo-resistive sensing part, (d) Element distribution of the piezo-resistive sensing part, (e) SEM images of cross-section of the magnetic driving part; (f) Element distribution of the magnetic driving part.
Figure 2
Figure 2
Sensing mechanism and performance of the FIP: (a) Deformation sensing mechanism of the FIP, (b) Velocity sensing mechanism of the FIP, (c) Positioning sensing mechanism of the FIP, (d) Sensitivity curve of the FIP, (e) Response time curve the FIP, (f) Distance sensing curve of the FIP.
Figure 3
Figure 3
Driving mechanism and performance of the FIP: (a,b) Driving mechanism of the FIP, (c) Hysteresis line of the MD part, (d) Deflection output force curve of the FIP, (e) Deflection angle curve of the FIP, (f) Axial output force curve of the FIP.
Figure 4
Figure 4
Simulation experiments of the FIP: (a) Workflow diagram of the FIP: ① initial state; ②, ③ fast monitoring; ④ intelligent positioning; ⑤ pumping and clearing; ⑥ end and next monitoring, (b) Sensing feedback curves in the simulation experiments, (c) Experimental testbed for thrombus simulation and real FIP, (d) Experimental procedure during simulated thrombus removal.
See this image and copyright information in PMC

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