by Keyword: Strain sensors
Kompa, Akshayakumar, Ravindran, Revathi, Hao, Jianyu, Fernandez, Javier G, (2025). A low-cost biocompatible and biodegradable multipurpose resistive ink for monitoring biological systems Journal Of Materials Chemistry b 13, 3295-3303
Flexible and biocompatible strain sensors are becoming increasingly important in fields such as health monitoring, wearable electronics, and environmental sensing because they offer significant advantages over conventional rigid systems. However, they lack the versatility and ecological and physiological biocompatibility necessary for broader integration within biological systems. Here, we describe the development of an inexpensive water-based plasticized chitosan-carbon black composite ink that can be used to produce conductive and biocompatible strain sensors. The ink can be applied to various surfaces, including skin, internal organs, and other biological tissues, using numerous methods, such as painting, dipping, and stamping. Furthermore, this unprecedented ability to attach and conform to biological surfaces allows the exploration of secondary sensing innovations, such as exploiting skin wrinkles to improve sensitivity. This study demonstrates that the ink exhibits a reliable change in electrical resistance in response to a wide range of motions, from subtle vibrations during speech and heartbeats to extensive articulations, like finger and elbow movements. This exceptional sensitivity range, biocompatibility, and the ink's low cost, biodegradability, and ease of removal enhance its applicability in sustainable, temporary, and customizable sensing solutions, highlighting its potential for versatile applications in human health monitoring, motion detection, and environmental sensing.
JTD Keywords: Blac, Chitin, Composites, Performance strain sensors
Mahmood, Usama, Casula, Giulia, Llanos, Judith, Niosiline, Ignazio, Salvatori, Carlotta, Bartolucci, Andrea, Lezcano, Florencia, Crespo, Maria, Ricotti, Leonardo, Cosseddu, Piero, Guix, Maria, Vannozzi, Lorenzo, Sanchez, Samuel, Lai, Stefano, (2024). Integration of Organic Field-Effect Transistor-based strain sensors to soft robotic devices and systems 2024 Ieee International Flexible Electronics Technology Conference (Ifetc)
The integration of flexible organic electronics in soft robotic devices is a valuable way to enhance their functionality, towards augmented controllability and performance. Nonetheless, this field is generally unexplored. Here, we report a preliminary study on the integration of soft robotic components with Organic Field-Effect Transistor-based strain sensors. Such sensors will be tested as deformation transducer for bioengineered muscle tissues operating as biohybrid actuators. Moreover, the integration of ultra-flexible devices on catheter-like soft robotic supports is discussed.
JTD Keywords: Biohybrid actuators, Biohybrid machine, Catheters, Ofets, Strain sensors
