98%
921
2 minutes
20
In this article, we report on a biomimetic tactile sensor that has a surface kinetic interface (SKIN) that imitates human epidermal fingerprint ridges and the epidermis. The SKIN is composed of a bilayer polymer structure with different elastic moduli. We improved the tactile sensitivity of the SKIN by using a hard epidermal fingerprint ridge and a soft epidermal board. We also evaluated the effectiveness of the SKIN layer in shear transfer characteristics while varying the elasticity and geometrical factors of the epidermal fingerprint ridges and the epidermal board. The biomimetic tactile sensor with the SKIN layer showed a detection capability for surface structures under 100 μm with only 20-μm height differences. Our sensor could distinguish various textures that can be easily accessed in everyday life, demonstrating that the sensor may be used for texture recognition in future artificial and robotic fingers.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843519 | PMC |
http://dx.doi.org/10.3390/mi10100642 | DOI Listing |
ACS Appl Mater Interfaces
September 2025
The Institute of Precision Machinery and Smart Structure, College of Engineering, Zhejiang Normal University, Jinhua, Zhejiang 321004, China.
Flexible sensors integrating motion detection and tactile perception capabilities demonstrate significant potential in aerospace biomechanics and medical rehabilitation. Here, we report a biomimetic inflatable chamber sensor that synergistically integrates pneumatic-auxiliary and electronic sensing for elbow joint health monitoring. The device architecture combines multiwalled carbon nanotube-reinforced silicone composites with embedded electrode arrays integrated within the inner lining of inflatable chambers, achieving high sensitivity while maintaining signal stability under electromagnetic interference.
View Article and Find Full Text PDFNanomicro Lett
September 2025
Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, People's Republic of China.
The growing prevalence of exercise-induced tibial stress fractures demands wearable sensors capable of monitoring dynamic musculoskeletal loads with medical-grade precision. While flexible pressure-sensing insoles show clinical potential, their development has been hindered by the intrinsic trade-off between high sensitivity and full-range linearity (R > 0.99 up to 1 MPa) in conventional designs.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2025
Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, School of Integrated Circuits, Anhui University, Hefei 230601, China.
In advanced robotics and human-machine interfaces, there is a critical demand for flexible sensors that can bridge the gap between noncontact perception and physical interaction. Integrating noncontact magnetic sensing for proximity detection with contact-based pressure sensing for tactile feedback in a single device is a key approach to meeting this demand. However, achieving high performance in both modalities is challenging due to a fundamental trade-off: materials and structures optimized for high pressure sensitivity are often compromised by the integration of magnetic components required for field detection, and vice versa.
View Article and Find Full Text PDFAdv Sci (Weinh)
August 2025
Research Center for New Materials Computing, Zhejiang Lab, Hangzhou, 311100, China.
Electronic skins (e-skins) incorporating island architectures represent a promising platform for strain-insensitive tactile sensing by mechanically decoupling sensing units from deformations. However, conventional island designs encounter stress concentration issues caused by inherent modulus mismatches, critically limiting achievable island densities. This limitation forces a stubborn trade-off between strain-insensitivity and sensing resolution.
View Article and Find Full Text PDFBiomimetics (Basel)
August 2025
School of Mechanical Engineering, Southeast University, Nanjing 211189, China.
Robotic assembly of electrical connectors enables the automation of high-efficiency production of electronic products. A rigid gripper is adopted as the end-effector by the majority of existing works with a force-torque sensor installed at the wrist, which suffers from very limited perception capability of the manipulated objects. Moreover, the grasping and movement actions, as well as the inconsistency between the robot base and the end-effector frame, tend to result in angular misalignment, usually leading to assembly failure.
View Article and Find Full Text PDF