scholarly journals Screen Printed Capacitive Free-standing Cantilever Beams used as a Motion Detector for Wearable Sensors

2012 ◽  
Vol 47 ◽  
pp. 165-169 ◽  
Author(s):  
Yang Wei ◽  
Russel Torah ◽  
Kai Yang ◽  
Steve Beeby ◽  
John Tudor
Keyword(s):  
Wearable Sensors ◽  
Cantilever Beams ◽  
Motion Detector ◽  
Free Standing ◽  
Screen Printed

scholarly journals Screen Printed Free-standing Resonator with Piezoelectric Excitation and Detection on Flexible Substrate

2014 ◽  
Vol 87 ◽  
pp. 947-950 ◽  
Author(s):  
Nursabirah Jamel ◽  
Dibin Zhu ◽  
Ahmed Almusallam ◽  
Russel Torah ◽  
Kai Yang ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Free Standing ◽  
Screen Printed

ASSESSING ABNORMAL GAITS OF PARKINSON'S DISEASE PATIENTS USING A WEARABLE MOTION DETECTOR

2014 ◽  
Vol 26 (02) ◽  
pp. 1450031
Author(s):  
Rung-Hung Su ◽  
Yeh-Liang Hsu ◽  
Lung Chan ◽  
Hanjun Lin ◽  
Che-Chang Yang
Keyword(s):  
Young Adults ◽  
Real Time ◽  
Confidence Limit ◽  
Gait Cycle ◽  
Wearable Sensors ◽  
Motion Detector ◽  
Yahr Stage ◽  
Lower Confidence ◽  
Wearable Systems ◽  
Ambulatory Rehabilitation

Accelerometers have been widely used in wearable systems for gait analysis. Several gait cycle parameters are provided to quantify the level of gait regularity and symmetry. This study attempts to assess abnormal gaits of Parkinson disease (PD) patients based on the gait cycle parameters derived in real-time from an accelerometry-based wearable motion detector (WMD). The results of an experiment with 25 healthy young adults showed that there were significant differences between gait cycle parameters of normal gaits and abnormal gaits derived from the WMD. Five PD patients diagnosed as Hoehn and Yahr stage I to II were recruited. It is difficult to collect data of abnormal gaits of the PD patients; therefore, ranges of the gait cycle parameters of abnormal gaits of PD patients were estimated statistically based on the "lower confidence limit" of the gait cycle parameters of their normal gaits. These results may lead to the future development of wearable sensors enabling real-time recognition of abnormal gaits of PD patients. Ambulatory rehabilitation, gait assessment and personal telecare for people with gait disorders are also possible applications.

Advanced on-site glucose sensing platform based on a new architecture of free-standing hollow Cu(OH)2 nanotubes decorated with CoNi-LDH nanosheets on graphite screen-printed electrode

Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12655-12671 ◽  
Author(s):  
Saeed Shahrokhian ◽  
Elnaz Khaki Sanati ◽  
Hadi Hosseini
Keyword(s):  
Glucose Sensing ◽  
Screen Printed Electrode ◽  
Free Standing ◽  
Sensing Platform ◽  
Screen Printed

Fabrication of new architecture of free-standing hollow Cu(OH)2 nanotubes decorated with CoNi-LDH nanosheets on graphite screen-printed electrode for advanced on-site glucose sensing platform.

scholarly journals Chitosan-Based Piezoelectric Flexible and Wearable Patch for Sensing Physiological Strain

2021 ◽  
Vol 6 (1) ◽  
pp. 12
Author(s):  
Gaia de Marzo ◽  
Denis Desmaële ◽  
Luciana Algieri ◽  
Lara Natta ◽  
Francesco Guido ◽  
...  
Keyword(s):  
Ad Hoc ◽  
Piezoelectric Properties ◽  
Low Cost ◽  
Wearable Sensors ◽  
Chitosan Film ◽  
Piezoresponse Force Microscopy ◽  
Open Circuit ◽  
Free Standing ◽  
Physiological Strain ◽  
Set Up

Innovative biocompatible organic materials with piezoelectric properties have great potential for the development of wearable sensors for monitoring physiological parameters. Among them, Chitosan (CS) is a natural, biodegradable, antibacterial and low cost biopolymer that shows interesting piezoelectric behaviour. In this context, this work reports on a protocol where plain chitosan films (CS-F) are exploited to easily create a flexible, wearable piezoelectric patch. By adapting a previously reported simple drop casting method, we here demonstrate that a 70 μm thick CS-F can exhibit good piezoelectric properties. The structure of CS-F was analysed via the XRD technique: the spectrum reveals peaks of partially crystalline chitosan film, indicating the presence of organized polymeric chains (Suppl. Ppt. Slide 8). Piezoresponse Force Microscopy scans confirmed the presence of domains with opposite polarization directions with an extrapolated value of the piezoelectric coefficient d33 of 2.54 pC/N. A microfabrication process for patch realization has been set up. The top electrode was created by the simple thermal evaporation of gold directly onto the free-standing CS-F (Suppl. Ppt. Slide 10). This bilayer was then precisely cut using a cutting plotter and assembled on the copper bottom electrode (Suppl. Ppt. Slide 11). The complete patch can be conformally applied on the skin. The ability of the device to sense physiological movements was validated by an ad hoc measurement set up generating strain pulses; open circuit voltage peaks up to 20 mV were detected (Suppl. Ppt. Slide 13). This sensor represents an important step towards totally biocompatible and biodegradable wearable devices.

scholarly journals Screen Printed Passives and Interconnects on Bio-Degradable Medical Hydrocolloid Dressing for Wearable Sensors

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Haneen Alsuradi ◽  
Jerald Yoo
Keyword(s):  
Humidity Sensor ◽  
Printed Circuit Board ◽  
Wearable Sensors ◽  
Circuit Board ◽  
Wireless Power ◽  
Disease Treatment ◽  
Biomedical Sensors ◽  
Hydrocolloid Dressing ◽  
Spiral Inductors ◽  
Screen Printed

AbstractThe healthcare system is undergoing a noticeable transformation from a reactive, post-disease treatment to a preventive, predictive continuous healthcare. The key enabler for such a system is a pervasive wearable platform. Several technologies have been suggested and implemented as a wearable platform, but these technologies either lack reliability, manufacturing practicability or pervasiveness. We propose a screen-printed circuit board on bio-degradable hydrocolloid dressings, which are medically used and approved, as a platform for wearable biomedical sensors to overcome the aforementioned problems. We experimentally characterize and prepare the surface of the hydrocolloid and demonstrate high-quality screen-printed passive elements and interconnects on its surface using conductive silver paste. We also propose appropriate models of the thick-film screen-printed passives, validated through measurements and FEM simulations. We further elucidate on the usage of the hydrocolloid dressing by prototyping a Wireless Power Transfer (WPT) sensor and a humidity sensor using printed spiral inductors and interdigital capacitors, respectively.

Wearable screen-printed SERS array sensor on fire-retardant fibre gloves for on-site environmental emergency monitoring

2022 ◽  
Author(s):  
Xuejian Li ◽  
Yuanting Li ◽  
Hai-Xin Gu ◽  
Pengfei Xue ◽  
Lixia Qin ◽  
...  
Keyword(s):  
Wearable Sensors ◽  
Fire Retardant ◽  
Threat Assessment ◽  
Incident Management ◽  
On Demand ◽  
Array Sensor ◽  
Environmental Threat ◽  
Surface Enhanced ◽  
Screen Printed ◽  
Emergency Monitoring

Glove-based wearable sensors can offer the potential ability to fast and on-site environmental threat assessment, which is crucial for timely and informed incident management. In this work, an on-demand surface-enhanced...

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