Wearable Wireless Cardiovascular Monitoring Using  Textile-Based Nanosensor and Nanomaterial Systems

Shyamkumar, Prashanth; Rai, Pratyush; Oh, Sechang; Ramasamy, Mouli; Harbaugh, Robert E.; Varadan, Vijay K.

doi:10.3390/electronics3030504

Cited by 67 publications

(30 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 4 c,d shows the obtained ECG signal using the fl exible system. Similar wearable ECG confi guration is used with polymer, [ 30 ] carbon nanotube, [ 31 ] stretchable elastomer, [ 32 ] and textile-based [ 33,34 ] electrodes. Since the ECG signal is periodic, the heart rate can be obtained from the R wave-to-R wave (RR) interval of the ECG signal.…”

Section: Heart Ratementioning

confidence: 99%

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

et al. 2016

View full text Add to dashboard Cite

Advances in wireless technologies, low-power electronics, the internet of things, and in the domain of connected health are driving innovations in wearable medical devices at a tremendous pace. Wearable sensor systems composed of flexible and stretchable materials have the potential to better interface to the human skin, whereas silicon-based electronics are extremely efficient in sensor data processing and transmission. Therefore, flexible and stretchable sensors combined with low-power silicon-based electronics are a viable and efficient approach for medical monitoring. Flexible medical devices designed for monitoring human vital signs, such as body temperature, heart rate, respiration rate, blood pressure, pulse oxygenation, and blood glucose have applications in both fitness monitoring and medical diagnostics. As a review of the latest development in flexible and wearable human vitals sensors, the essential components required for vitals sensors are outlined and discussed here, including the reported sensor systems, sensing mechanisms, sensor fabrication, power, and data processing requirements.

show abstract

Section: Heart Ratementioning

confidence: 99%

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

et al. 2016

View full text Add to dashboard Cite

show abstract

“…For example, fiber-based devices can be used as generators to power personal electronics, or to provide wearable body temperature sensors [8] . More specialized components have also been developed and include cardiovascular monitors for portable healthcare [9] , and even wearable computers to aid astronauts during extravehicular activities (space walks) [10] . One of the main challenges in integrating electronics with fabrics is the fact that fabrics are typically not suitable as substrates in traditional fabrication processes.…”

Section: Introductionmentioning

confidence: 99%

Stretchable electronics for wearable and high-current applications

2016

View full text Add to dashboard Cite

Advances in the development of novel materials and fabrication processes are resulting in an increased number of flexible and stretchable electronics applications. This evolving technology enables new devices that are not readily fabricated using traditional silicon processes, and has the potential to transform many industries, including personalized healthcare, consumer electronics, and communication. Fabrication of stretchable devices is typically achieved through the use of stretchable polymer-based conductors, or more rigid conductors, such as metals, with patterned geometries that can accommodate stretching. Although the application space for stretchable electronics is extensive, the practicality of these devices can be severely limited by power consumption and cost. Moreover, strict process flows can impede innovation that would otherwise enable new applications. In an effort to overcome these impediments, we present two modified approaches and applications based on a newly developed process for stretchable and flexible electronics fabrication. This includes the development of a metallization pattern stamping process allowing for 1) stretchable interconnects to be directly integrated with stretchable/wearable fabrics, and 2) a process variation enabling aligned multi-layer devices with integrated ferromagnetic nanocomposite polymer components enabling a fully-flexible electromagnetic microactuator for large-magnitude magnetic field generation. The wearable interconnects are measured, showing high conductivity, and can accommodate over 20% strain before experiencing conductive failure. The electromagnetic actuators have been fabricated and initial measurements show well-aligned, highly conductive, isolated metal layers. These two applications demonstrate the versatility of the newly developed process and suggest potential for its furthered use in stretchable electronics and MEMS applications.

show abstract

“…Inspired by the exciting potential applications of textile electronic devices in healthcare, communications, environments, sports, security, and so on, in the past several years, many kinds of textile electronic devices have been produced by researchers all over the world, including sensors, solar cells, thermoelectric power generators and nanogenerators, diodes, transistors, circuits, etc . Ideally, these textile electronic devices would be directly woven into cloth and worn on human body for daily usage.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Fiber Supercapacitors: Materials, Device Configurations, and Applications

et al. 2019

View full text Add to dashboard Cite

electronic devices built on planar substrates, textile electronic devices can be integrated into different materials that fit the curved surface of the human body or other nonplanar surfaces. Besides, it can bear deformations in almost all dimensions, making it applicable for long-term usage as minimal disruption can be made on the comfort and daily activities of the wearers. Another attractive feature of textile electronic devices is that, in principle, they are compatible to the conventional textile technology and can be manufactured on a large scale using the textile manufacturing technique, such as the rollto-roll process.Inspired by the exciting potential applications of textile electronic devices in healthcare, communications, environments, sports, security, and so on, in the past several years, many kinds of textile electronic devices have been produced by researchers all over the world, including sensors, solar cells, thermoelectric power generators and nanogenerators, diodes, transistors, circuits, etc. Ideally, these textile electronic devices would be directly woven into cloth and worn on human body for daily usage. As a result, these devices should be of lightweight, stable performance, and can bear deformations for long-term usage.Flexible textile electronic devices require flexible textile/fiber energy storage devices as compatible power suppliers. To match flexible textile electronic devices, the energy storage devices should have similar textile/fiber shapes with excellent flexibility, mechanical stability, light weight and can also bear deformations in all dimensions. Mainly two types of textile/fiber energy storage devices are explored including fiber lithium-ion batteries (LIBs) and fiber supercapacitors (SCs). [27][28][29][30][31][32][33][34][35][36][37][38][39][40] In recent years, LIBs were successfully made into fiber shapes to fit for flexible textile electronic devices. [41] Unfortunately, relatively complicated procedures are needed to fabricate fiber LIBs. Besides, the power densities of fiber LIBs are still quite low for practical applications. Compared with LIBs, supercapacitors offer higher power delivery capability, faster charge/discharge rates, long cycle livers, and bridging functions for the power-energy gap between traditions dielectric capacitors and batteries. These features make SCs ideal power suppliers for wearable and textile electronics.Over the past decades, researches on fiber SCs expanded very fast and great progresses have been achieved. Although several reviews focusing on some special aspects of fiber SCs Fiber supercapacitors (SCs), with their small size and weight, excellent flexibility and deformability, and high capacitance and power density, are recognized as one of the most robust power supplies available for wearable electronics. They can be woven into breathable textiles or integrated into different functional materials to fit curved surfaces for use in day-to-day life. A comprehensive review on recent important development and progress in fiber SCs is pro...

show abstract

Wearable Wireless Cardiovascular Monitoring Using Textile-Based Nanosensor and Nanomaterial Systems

Cited by 67 publications

References 64 publications

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

Stretchable electronics for wearable and high-current applications

Recent Advances in Fiber Supercapacitors: Materials, Device Configurations, and Applications

Contact Info

Product

Resources

About