Recent advances in Organ-on-a-Chip models: How precision engineering integrates cutting edge technologies in fabrication and characterization

Applied Materials Today, Journal Year: 2024, Volume and Issue: 38, P. 102231 - 102231

Published: May 14, 2024

Language: Английский

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Polymer-based flexible piezoresistive pressure sensors based on various micro/nanostructures array

Composites Part A Applied Science and Manufacturing, Journal Year: 2024, Volume and Issue: 190, P. 108648 - 108648

Published: Dec. 9, 2024

Language: Английский

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Fabrication and Characterization of Flexible Piezoresistive Pressure Sensors Using Spinosum Structured PANI/PVA Hydrogel

Journal of Physics Conference Series, Journal Year: 2025, Volume and Issue: 2949(1), P. 012005 - 012005

Published: Feb. 1, 2025

Abstract In this study, flexible piezoresistive pressure sensors with a spinosum structure surface were fabricated from Polyaniline/Polyvinyl Alcohol (PANI/PVA) hydrogel. First, PANI powder was and mixed PVA solution. The mixture blended at 1:1 ratio 10% solution before scraped on two types of abrasive paper to replicate the microstructure. hydrogel thin films dried ambient temperature then carefully removed obtain micro structured PANI/PVA films. phase evaluated. mechanical strength film assessed using stress-strain curve. According results, pore sizes microstructure affected resistance film. capable producing current responses different masses. Furthermore, able identify calligraphic styles, demonstrating their potential for biometric recognition personalized electronics applications.

Language: Английский

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Human Skin-Inspired Staggered Microstructures for Optimizing Sensitivity of Flexible Pressure Sensor

Sensors, Journal Year: 2025, Volume and Issue: 25(8), P. 2415 - 2415

Published: April 11, 2025

Flexible pressure sensors play a significant role in wearable electronics, human–machine interfaces, and health monitoring, improving their performance has always been major focus of research. Various microstructures have proposed to enhance sensitivity, particularly when tilted. However, unidirectional tilting may create shift contact surfaces, reducing accuracy detection. To address these limitations, this study introduces capacitive sensor with staggered tilted column microstructure, inspired by the elaborate network epidermis dermis layers within human skin. The simulation experiment results reveal that developed high sensitivity responds rapidly applied forces, making it suitable for real-time applications. Demonstrations gesture recognition physiological monitoring highlight its practical potential. These findings underscore effectiveness microstructure applicability next-generation flexible sensors.

Language: Английский

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Improving performance of AgNPs/PDA/TPU electrospun composite film based flexible pressure sensor by hot imprinted microstructure array

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 376, P. 115631 - 115631

Published: June 24, 2024

Language: Английский

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Progresses and Perspectives of 1D Soft Sensing Devices for Healthcare Applications

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 28, 2024

Abstract Healthcare sensing devices enable continuous monitoring of diverse biosignals, such as respiration, heartbeat, temperature, inflammation, Electroencephalogram (EEG), and biomechanical movement, contributing to the management health conditions early diagnosis diseases. However, clinically available tools have several limitations for real‐time measurement biosignals in non‐hospital environments owing their cumbersome, complex designs, rigidity. To address these limitations, there has been a growing body research that explores flexible soft electronics healthcare applications, which feature high mechanical compliance adaptability. Especially, based on fiber structures attracted significant attention due flexibility, lightweight design, effective workspace unique structural Moreover, 1D can be seamlessly integrated into garments human with without any unconformity. In this perspective, The fabrication electrical functionalization substrates focus recent advances various fiber‐based systems strain, pressure, pH, biomarkers, neural activity is explored. Additionally, biodegradable future technologies are briefly discussed. Finally, article provides summary outlook remaining challenges current devices.

Language: Английский

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Intelligent Flexible Pressure Sensors with Improved Sensing Range and Sensitivity Based on 3D-Graphene Patterning Induced by UV Laser

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

Intelligent flexible sensors are an integral component of the next generation consumer electronics. However, developing a pressure sensing system that possesses both high sensitivity and range remains key challenge in practical applications. Herein, machine learning-assisted 3D laser-induced graphene (3D-LIG)/polydimethylsiloxane composite based on ultraviolet (UV) laser integrated fabrication was proposed. Low-cost LIG-based with carbonized structure were prepared by selective UV ablation graphitization. The interlayer interlocking structure, combined internal porous LIG, enriches mechanism, allowing sensor to exhibit triphasic linear response characteristics, demonstrating large (0–500 kPa) (0–20 kPa, 3.047 kPa–1). Based machine-learning algorithms, intelligent wearable sign language translation constructed capable high-precision recognition complex sequence information. integration LIG microstructures allows wider space for designing structures offers promising platform development devices.

Language: Английский

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Pollen-Modified Flat Silk Cocoon Pressure Sensors for Wearable Applications

Sensors, Journal Year: 2024, Volume and Issue: 24(14), P. 4698 - 4698

Published: July 19, 2024

Microstructures have been proved as crucial factors for the sensing performance of flexible pressure sensors. In this study, polypyrrole (PPy)/sunflower pollen (SFP) (P/SFP) was prepared via in situ growth PPy on surface degreased SFP with a sea urchin-like microstructure; then, these P/SFP microspheres were sprayed onto flat silk cocoon (FSC) to prepare layer P/SFP-FSC. PPy-FSC (P-FSC) an electrode through polymerization FSC surface. The P/SFP-FSC placed between two P-FSC layers assemble sensor together fork finger electrode. With 6 mg/cm

Language: Английский

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Sensorized Fur for Tactile Human-Robot Interaction

Published: May 3, 2024

The increasing prevalence of emotional support animals as a coping mechanism for stressors prompts the need innovative solutions in environments where live are impractical. This project aims to enhance approachability and responsiveness quadrupedal robots by integrating pressure-sensitive fur outer layer, mimicking tactile interactions akin real animals. Drawing inspiration from human-wearable technologies, particularly sensorized fabrics, our approach emphasizes flexibility elasticity. Through series experiments evaluating various fabrics their signal transference structural support, we identified cotton-based most suitable. Integrating these with Arduino microcontrollers, observed sensor activation rates accuracy. Results indicate that thinner, natural fiber outperform thicker synthetics responsiveness. Additionally, discrepancies highlight importance fabric-sensor alignment accurate touch registration. research lays groundwork future developments robotic companionship, offering potential applications therapy, education, beyond.

Language: Английский

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Biomaterials for flexible pressure sensors: innovations and advancements

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

The burgeoning market for flexible pressure sensors has been invigorated by their enhanced performance and wearability, paving the way innovative applications in wearable electronics biomedical devices.

Language: Английский

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