A5051461851- Advanced Sensor and Energy Harvesting Materials
- Tactile and Sensory Interactions
- Conducting polymers and applications
- Muscle activation and electromyography studies
- Advanced Chemical Sensor Technologies
- Neuroscience and Neural Engineering
- Advanced Materials and Mechanics
- Dielectric materials and actuators
- Gas Sensing Nanomaterials and Sensors
- EEG and Brain-Computer Interfaces
- Advanced Memory and Neural Computing
- Innovative Energy Harvesting Technologies
- Analytical Chemistry and Sensors
- Nanomaterials and Printing Technologies
- Interactive and Immersive Displays
Yonsei University
2020-2025
Tactile sensor arrays have attracted considerable attention for their use in diverse applications, such as advanced robotics and interactive human–machine interfaces. However, conventional tactile suffer from electrical crosstalk caused by current leakages between the cells. The approaches that been proposed thus far to overcome this issue require complex rectifier circuits or a serial fabrication process. This article reports flexible array fabricated through batch process using mesh. A...
Abstract Porous structures have been utilized in tactile sensors to improve sensitivity owing their excellent deformability. Recently, using porous used practical applications, such as bio‐signal monitoring. However, highly sensitive responses are limited the low‐pressure range, and significantly decreases a higher‐pressure range. Several approaches for developing with high overing wide pressure range proposed; however, achieving sensing remains crucial challenge. This report presents carbon...
Abstract Paper has attracted considerable interest as a promising pressure‐sensing element owing to its foldability/bendability and deformability due high porosity. However, paper‐based tactile sensors reported hitherto cannot achieve sensitivity wide sensing range simultaneously. In this study, resistive sensor using carbon nanotube‐ silver nanoparticle‐printed mulberry paper electrodes, respectively, is developed. The rough surface inner porosity of induce significant change in the contact...
In the rapidly evolving field of human-machine interfaces (HMIs), high-resolution wearable electronic skin (e-skin) is essential for user interaction. However, traditional array-structured tactile require increased number interconnects, while soft material–based computational methods have limited functionalities. Here, we introduce a thin and e-skin interfaces, offering high mapping capabilities through electrical impedance tomography (EIT). We employed an organic/inorganic hybrid structure...
Abstract Flexible tactile sensors have received significant attention for use in wearable applications such as robotics, human‐machine interfaces, and health monitoring. However, conventional face challenges accurately measuring pressure because vertical deformation is induced by Poisson's ratio situations where lateral strain applied. This study shows a strain‐insensitive flexible sensor array without the crosstalk effect using highly stretchable mesh. fabricated assembling sensing layer...
Tactile Sensing Technology In article number 2005902, Jongbaeg Kim and co-workers comprehensively review flexible tactile sensors to emulate the sensory function of human skin. The strategies improve performance parameters integrate them with other components for practical applications beyond conceptual prototypes are provided. In-depth surveys advanced in human-interactive systems featured.
This paper reports a fully flexible micro-actuator array utilizing liquid-to-gas phase change mechanism. A stretchable membrane of the actuator is deformed by volume expansion and contraction inducing vaporization liquefaction materials. The mechanism has high energy density large displacement even in small at microscale, which advantageous for downscaling compared to other actuation mechanisms, such as electrostatic pneumatic actuation. Additionally, this device could be candidate...
Abstract Gaseous ethanol detection has attracted significant interest owing to its practical applications such as in breath analysis, chemical process monitoring, and safety evaluations of food packaging. In this study, titanium dioxide (TiO 2 ) nanoparticles functionalized with cobalt porphyrin (CoPP) are utilized resistive ethanol-sensing materials, integrated a suspended micro-heater for low power consumption. The the structure inhibits substrate heat transfer, resulting consumption 18 mW...
This paper reports a flexible actuator operating via liquid-to-gas phase change transition, which is integrated with wrinkled membrane to increase displacement. When the liquid materials (PCM) vaporize into gas, volume of PCM expands, causing spread. The exhibits superior extensibility compared flat membrane, resulting in an increased displacement 740% under same driving conditions. In fabrication process, we create by inducing stress between adjacent membranes. proposed method can be easily...
This paper reports an inkjet-printed fabric-based tactile sensor with high sensitivity and a wide pressure-sensing range. Inkjet printing allows conformal formation of various carbon nanotube (CNT) patterns on the fabric structure without wasting material. The woven induces increased contact area as applied pressure increases, thereby achieving over 1 kPa <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">−1</sup> range 0 to 600 kPa. Furthermore,...
This paper reports a crosstalk-free, highly-durable piezo-resistive tactile sensor array based on carbon nanotube (CNT) and polydimethylsiloxane (PDMS) composite formed in fiberglass mesh. The the mesh fabricated by simple solution process is utilized as sensing material. structure electrically isolates each element, preventing crosstalk between adjacent cells, while it mechanically connects all of them single sheet. When pressure applied to sensor, cells under are deformed, their electrical...
Resistive Tactile Sensor In article number 2100428, Jongbaeg Kim and co-workers develop a resistive tactile sensor using carbon nanotube- silver nanoparticle inkjet-printed mulberry paper as pressure-sensing element electrodes, respectively. Compared with previously reported paper-based sensors, the presented exhibits high sensitivity over wide pressure range due to distinctive characteristics stacked structure of paper.
This paper reports a flexible tactile sensor array based on vertically aligned carbon nanotubes (CNTs)-embedded polydimethylsiloxane (PDMS) microstructures with high sensitivity and durability. The CNTs-embedded PDMS are fabricated by synthesizing bundles quadrangular pyramid-etched silicon mold transferring them to the PDMS. structure shows mechanical robustness originating from axially grown CNTs. Furthermore, after CNTs mold, top of exposed surface structure. These provide an electrical...
Tactile Sensors In article number 2203193, Jongbaeg Kim and co-workers develop a resistive tactile sensor based on carbon nanotube (CNT)-embedded/-coated dual-scale porous structure. This exhibits highly sensitive linear response over wide pressure range. With demonstration of monitoring various human movements, the can be promising candidate for health devices.