Biodegradable, Breathable Leaf Vein‐Based Tactile Sensors with Tunable Sensitivity and Sensing Range

Small ◽  
2021 ◽  
pp. 2106906
Author(s):  
Yue Liu ◽  
Juan Tao ◽  
Wenkai Yang ◽  
Yufei Zhang ◽  
Jing Li ◽  
...  
Keyword(s):  
Tactile Sensors ◽  
Leaf Vein ◽  
Sensing Range

scholarly journals Development of Fully Flexible Tactile Pressure Sensor with Bilayer Interlaced Bumps for Robotic Grasping Applications

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 770
Author(s):  
Lingfeng Zhu ◽  
Yancheng Wang ◽  
Deqing Mei ◽  
Chengpeng Jiang
Keyword(s):  
Pressure Sensor ◽  
Tactile Sensor ◽  
External Pressure ◽  
Robotic Hand ◽  
Sensing Element ◽  
Tactile Sensors ◽  
Human Machine Interaction ◽  
Tactile Information ◽  
Sensing Range ◽  
Intelligent Robotics

Flexible tactile sensors have been utilized in intelligent robotics for human-machine interaction and healthcare monitoring. The relatively low flexibility, unbalanced sensitivity and sensing range of the tactile sensors are hindering the accurate tactile information perception during robotic hand grasping of different objects. This paper developed a fully flexible tactile pressure sensor, using the flexible graphene and silver composites as the sensing element and stretchable electrodes, respectively. As for the structural design of the tactile sensor, the proposed bilayer interlaced bumps can be used to convert external pressure into the stretching of graphene composites. The fabricated tactile sensor exhibits a high sensing performance, including relatively high sensitivity (up to 3.40% kPa−1), wide sensing range (200 kPa), good dynamic response, and considerable repeatability. Then, the tactile sensor has been integrated with the robotic hand finger, and the grasping results have indicated the capability of using the tactile sensor to detect the distributed pressure during grasping applications. The grasping motions, properties of the objects can be further analyzed through the acquired tactile information in time and spatial domains, demonstrating the potential applications of the tactile sensor in intelligent robotics and human-machine interfaces.

scholarly journals Fully 3D Printed Flexible, Conformal and Multi-directional Tactile Sensor with Integrated Biomimetic and Auxetic Structure

2021 ◽  
Author(s):  
Yuyang Wei ◽  
Bingqian Li ◽  
Marco Domingos ◽  
Yiming Zhu ◽  
Lingyun Yan ◽  
...  
Keyword(s):  
Lumbar Vertebra ◽  
Tactile Sensor ◽  
Tactile Feedback ◽  
Robotic Hand ◽  
Tactile Sensors ◽  
Current Sensing ◽  
Sensing Range ◽  
Sensing Technology ◽  
3D Printed ◽  
Auxetic Structure

Abstract Tactile sensors are instrumental for developing the next generation of biologically inspired robotic prostheses with tactile feedback. Despite significant advancements made in current sensing technology, several limitations still exist including the reduced sensing sensitivity under high pressure, lack of compliance of the planar sensor with working surfaces and the demand for sophisticated manufacturing processes. In this study, we investigate the feasibility of using the 3D printing technology for the rapid and simple fabrication of a new conformal tactile sensor with an improved linear sensing range. The auxetic structure is integrated with a biomimetic inter-locked papilla feature which allows to detect multi-directional stimuli. Using the proposed design, the linear sensing range is extended to 0.5MPa and responsive to normal and shear forces with the sensitivities of 2.42KPa^(-1)and 2.20N^(-1) respectively. The proposed tactile sensor was printed on the fingertip of a prosthetic robotic hand to perform the sensorimotor control, or on the proximal femur head and lumbar vertebra for monitoring the bone-on-bone load. The results have shown promising application prospects of the proposed tactile sensor.

A Multi-Sensing-Range Method for Efficient Position Estimation by Passive RFID Technology

2009 ◽  
Vol E92-A (10) ◽  
pp. 2609-2617 ◽  
Author(s):  
Toshihiro HORI ◽  
Tomotaka WADA ◽  
Norie UCHITOMI ◽  
Kouichi MUTSUURA ◽  
Hiromi OKADA
Keyword(s):  
Position Estimation ◽  
Rfid Technology ◽  
Sensing Range ◽  
Passive Rfid

Karakter Morfologi Daun Ubi Jalar Sebagai Bahan Pangan Suku Dani Distrik Kurulu Jayawijaya

Agrotek ◽  
2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Antonius Suparno ◽  
Opalina Logo ◽  
Dwiana Wasgito Purnomo
Keyword(s):  
Sweet Potato ◽  
Leaf Morphology ◽  
Food Source ◽  
Staple Food ◽  
Sweet Potatoes ◽  
General Outline ◽  
Leaf Vein ◽  
Mature Leaves ◽  
Young Leaves ◽  
Tuber Roots

Sweet potato serves as a staple food for people in Jayawijaya. Many cultivars of sweet potatoes have been cultivated by Dani tribe in Kurulu as foot for their infant, child and adult as well as feeding especially for pigs. Base on the used of sweet potatoes as food source for infant and child, this study explored 10 different cultivars. As for the leaf morphology, it was indentified that the mature leaves have size around 15 � 18 cm. general outline of the leaf is reniform (40%), 60% have green colour leaf, 50% without leaf lobe, 60% of leaf lobes number is one, 70% of shape of central leaf lobe is toothed. Abazial leaf vein pigmentation have purple (40%), and petiole pigmentation is purple with green near leaf (60%), besides its tuber roots, sweet potatoes are also harvested for its shoots and green young leaves for vegetables.

Design and Experiment of Flexible Multi-Functional Tactile Sensors for Robot Skin

ROBOT ◽  
2011 ◽  
Vol 33 (3) ◽  
pp. 347-353 ◽  
Author(s):  
Ying HUANG ◽  
Wei LU ◽  
Xiaowen ZHAO ◽  
Chao LIAN ◽  
Yunjian GE
Keyword(s):  
Tactile Sensors ◽  
Robot Skin

Relationship Between Photosynthetic Characteristics and Leaf Vein Density inSorghum bicolorandPerilla frutescens

2015 ◽  
Vol 50 (1) ◽  
pp. 100
Author(s):  
Song Liqing ◽  
Hu Chunmei ◽  
Hou Xilin ◽  
Shi Lei ◽  
Liu Li'an ◽  
...  
Keyword(s):  
Photosynthetic Characteristics ◽  
Leaf Vein ◽  
Vein Density ◽  
Leaf Vein Density

Pressure Measurement of Planing Hull Stern Bottom by Tactile Sensors

2018 ◽  
Vol 55 (5) ◽  
pp. 431-437
Author(s):  
Sae Yong Park ◽  
Jong Yeol Park ◽  
Shin Hyung Lee ◽  
Dong Jin Kim
Keyword(s):  
Pressure Measurement ◽  
Tactile Sensors
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