Simultaneous Detection of Static and Dynamic Signals by a Flexible Sensor Based on 3D Graphene

Xu, Rongqing; Wang, Di; Zhang, Hongchao; Xie, Ning; Lu, Shan; Qu, Ke

doi:10.3390/s17051069

Cited by 15 publications

(9 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wearable sensors that use a piezoresistive mechanism are ubiquitous . Researchers have used devices that consist of carbon-based nanomaterials, − as well as composite materials, − to detect subtle motions of the throat, such as respiration, speaking, and swallowing. Multiple groups have used various sensing modalities to assay swallowing activity. − However, these studies did not monitor the mechanical activity of muscle groups in the submental region, which are particularly susceptible to fibrosis following radiation therapy .…”

mentioning

confidence: 99%

Metallic Nanoislands on Graphene for Monitoring Swallowing Activity in Head and Neck Cancer Patients

et al. 2018

View full text Add to dashboard Cite

There is a need to monitor patients with cancer of the head and neck postradiation therapy, as diminished swallowing activity can result in disuse atrophy and fibrosis of the swallowing muscles. This paper describes a flexible strain sensor comprising palladium nanoislands on single-layer graphene. These piezoresistive sensors were tested on 14 disease-free head and neck cancer patients with various levels of swallowing function: from nondysphagic to severely dysphagic. The patch-like devices detected differences in (1) the consistencies of food boluses when swallowed and (2) dysphagic and nondysphagic swallows. When surface electromyography (sEMG) is obtained simultaneously with strain data, it is also possible to differentiate swallowing vs nonswallowing events. The plots of resistance vs time are correlated to specific events recorded by video X-ray fluoroscopy. Finally, we developed a machine-learning algorithm to automate the identification of bolus type being swallowed by a healthy subject (86.4%. accuracy). The algorithm was also able to discriminate between swallows of the same bolus from either the healthy subject or a dysphagic patient (94.7% accuracy). Taken together, these results may lead to noninvasive and home-based systems for monitoring of swallowing function and improved quality of life.

show abstract

mentioning

confidence: 99%

Metallic Nanoislands on Graphene for Monitoring Swallowing Activity in Head and Neck Cancer Patients

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Based on the resistance change of three-dimensional graphene under the action of sound wave, Rongqing Xu et al proposed a flexible acoustic pressure sensor. The sensor was constructed by 3D graphene foam (GF) wrapped in flexible polydimethylsiloxane (PDMS) [16].…”

Section: Application Examples Of Graphene-based Pressure Sensorsmentioning

confidence: 99%

“…Traditional sensors can not achieve high sensitivity and large sensing range at the same time. However, the sensing effect of high sensitivity and wide range monitoring can be achieved by The measured GF/PDMS sensor signal when a tester is speaking Chinese characters "Nanjing" and its signal patterns [16] the structural design of graphene and its composites and other materials. Graphene-based strain sensor is used in the movement monitoring of health monitoring (such as pulse movement, finger bending and breathing lamp micro movement), which has an important impact on the development of wearable sensor technology.…”

Section: Graphene-based Strain Sensors 221 Application Progress Of mentioning

confidence: 99%

Research Progress of Graphene-based Flexible Sensor in Wearable Health Monitoring

Shang¹,

Zhao²

2019

JFBI

View full text Add to dashboard Cite

Research of flexible sensors for human wearable health monitoring are of paramount importance. In view of the problems of traditional sensors, such as complexity, low sensitivity, insufficient strain, short service life and incompatibility with human body, the research progress of Graphene-based flexible sensors in wearable health monitoring is systematically introduced. Benefitting from the commendable flexible mechanical properties and high durability, flexible Graphene-based sensors promote its applications in motion detection, body temperature monitoring, sweat ion real-time monitoring, voice recognition, pulsebeating, and respiration detection. The challenges and prospects of the application of Graphene-based flexible sensors in wearable health monitoring are pointed out. It is expected that most current research, which is still experimental, will need several more years of study before it becomes widely used. In the future, more attention should be paid to the lack of flexibility and high sensitivity of Graphene, the preparation of high purity Graphene, the application of composite materials and the development of advanced technology.

show abstract

“…The flexible pressure sensor can be divided into piezoresistive type [ 21 , 22 , 23 ], pressure–capacitive type [ 24 , 25 , 26 ], piezoelectric type [ 27 , 28 , 29 ], and piezomagnetic type [ 30 , 31 ], according to the working principle. It is generally known that high performance is the prerequisite for flexible pressure sensors to be widely used.…”

Section: Introductionmentioning

confidence: 99%

Force-Sensitive Interface Engineering in Flexible Pressure Sensors: A Review

Tai

Wei

et al. 2022

Sensors

View full text Add to dashboard Cite

Flexible pressure sensors have received extensive attention in recent years due to their great importance in intelligent electronic devices. In order to improve the sensing performance of flexible pressure sensors, researchers are committed to making improvements in device materials, force-sensitive interfaces, and device structures. This paper focuses on the force-sensitive interface engineering of the device, which listing the main preparation methods of various force-sensitive interface microstructures and describing their respective advantages and disadvantages from the working mechanisms and practical applications of the flexible pressure sensor. What is more, the device structures of the flexible pressure sensor are investigated with the regular and irregular force-sensitive interface and accordingly the influences of different device structures on the performance are discussed. Finally, we not only summarize diverse practical applications of the existing flexible pressure sensors controlled by the force-sensitive interface but also briefly discuss some existing problems and future prospects of how to improve the device performance through the adjustment of the force-sensitive interface.

show abstract

Simultaneous Detection of Static and Dynamic Signals by a Flexible Sensor Based on 3D Graphene

Cited by 15 publications

References 26 publications

Metallic Nanoislands on Graphene for Monitoring Swallowing Activity in Head and Neck Cancer Patients

Metallic Nanoislands on Graphene for Monitoring Swallowing Activity in Head and Neck Cancer Patients

Research Progress of Graphene-based Flexible Sensor in Wearable Health Monitoring

Force-Sensitive Interface Engineering in Flexible Pressure Sensors: A Review

Contact Info

Product

Resources

About