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Carbon-Nanotube-Coated 3D Microspring Force Sensor for Medical Applications
- Li, Bing, Gil, Bruno, Power, Maura, Gao, Anzhu, Treratanakulchai, Shen, Anastasova, Salzitsa, Yang, Guang-Zhong
- ACS applied materials & interfaces 2019 v.11 no.39 pp. 35577-35586
- biosensors, catheters, geometry, humans, medical equipment, microstructure, nanomaterials, photons, polymerization
- Flexible electronic materials combined with micro-3D fabrication present new opportunities for wearable biosensors and medical devices. This Research Article introduces a novel carbon-nanotube-coated force sensor, successfully combining the advantages of flexible conductive nanomaterials and the versatility of two photon polymerization technologies for creating functional 3D microstructures. The device employs carbon-nanotube-coated microsprings with varying configurations and geometries for real-time force sensing. To demonstrate its practical value, the device has first been embodied as a patch sensor for transcutaneous monitoring of human arterial pulses, followed by the development of a multiple-point force-sensitive catheter for real-time noninvasive intraluminal intervention. The results illustrate the potential of leveraging advanced nanomaterials and micro-3D-printing for developing new medical devices.