Actuatable fiber sensor technologies could enable the use of smart catheters

NewsGuard 100/100 Score

Integrative actuators and sensors within a single active device offer compelling capabilities for developing robotics, prosthetic limbs, and minimally invasive surgical tools. But instrumenting these devices at the microscale is constrained by current manufacturing technologies.

Now, a team of researchers has developed a flexible polymer-based actuatable fiber which is capable of being integrated with smart materials and biosensing composite materials. The technology may lead to technological advancements in soft and flexible robotic fields, which could open possibilities for achieving closed-loop control for high-precision operations.

Details of their research were published in ACS Applied Engineering Materials on January 23, 2023.

Dr. Yuanyuan Guo, who is an associate professor at Tohoku University's Frontier Research Institute for Interdisciplinary Sciences (FRIS), led the team.

Our microscale fiber, integrated with actuating and sensing functions, could enable the use of smart catheters."

Dr. Yuanyuan Guo, Associate Professor, Tohoku University's Frontier Research Institute for Interdisciplinary Sciences

The team produced the fiber by applying the preform-to-fiber thermal drawing process. The telecommunication industry has employed thermal drawing to produce optical fibers and, more recently, to fabricate multi-material and multifunctional fibers for biomedical applications. Although many important functions, such as electrodes, optics, and channels, can be incorporated within fibers, they are limited to passive modalities.

To deliver a workaround to this limitation, the team embedded shape-memory alloy (SMA) wires. The shape-memory effect of the SMA's enabled fibers with high mechanical actuation.

Additionally, they integrated the fiber with carbon-based composite materials to enable biochemical sensing. The sensors were capable of intrinsically high sensitivity towards electroactive molecules.

Utilizing a bifurcated vessel model, the team also succeeded in using the actuatable fiber sensor to approach branched vessels and capture localized chemical information for diagnostic purposes.

Looking ahead, Guo and her team hope to improve the fiber's freedom of movement.

Journal reference:

Sato, Y & Guo, Y., (2023) Shape-Memory-Alloys Enabled Actuatable Fiber Sensors via the Preform-to-Fiber Fabrication. ACS Applied Engineering Materials.


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
Post a new comment

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
Research reveals decline in childhood mortality extended US women's lifespan by a year