Results 41 to 50 of about 116,540 (259)

Real-world heart rate norms in the Health eHeart study. [PDF]

, 2019
Emerging technology allows patients to measure and record their heart rate (HR) remotely by photoplethysmography (PPG) using smart devices like smartphones.
Aschbacher, Kirstin, Avram, Robert, Butzner, Michael, Kuhar, Peter, Marcus, Gregory M, Olgin, Jeffrey, Pletcher, Mark J, Runge, Ryan, Tison, Geoffrey H, Vittinghoff, Eric, Wu, Nancy   +10 more
core  

Evaluation of PPG Biometrics for Authentication in different states

, 2017
Amongst all medical biometric traits, Photoplethysmograph (PPG) is the easiest to acquire. PPG records the blood volume change with just combination of Light Emitting Diode and Photodiode from any part of the body.
Abbas, Sherif N, Hatzinakos, Dimitrios, Yadav, Umang   +2 more
core   +1 more source

Broadband, Flexible, Skin‐Compatible Carbon Dots/Graphene Photodetectors for Wearable Applications

Advanced Functional Materials, EarlyView.
Broadband, flexible photodetectors integrating nitrogen‐rich carbon dots with single‐layer graphene on plastic substrates are demonstrated. A biocompatible chitosan–glycerol electrolyte enables efficient low‐voltage gating and on‐skin operation. The devices exhibit ultraviolet‐to‐near‐infrared response, mechanical robustness under bending, and verified
Nouha Loudhaief, Petr Rozhin, Ilaria Bertuol, Ali Raza, Leonardo Viti, Subhankar Roy, Enrico Cavarzerani, Luca Sbuelz, Matteo Brilli, Andrea Serinolli, Jacopo Nicoletti, Riccardo Piccoli, Sebastián Castilla, Simone Dal Zilio, Enrique Rodríguez‐Castellón, Miriam Serena Vitiello, Maurizio Selva, Flavio Rizzolio, Alvise Perosa, Giovanni Antonio Salvatore, Domenico De Fazio   +20 more
wiley   +1 more source

A Novel Adaptive Spectrum Noise Cancellation Approach for Enhancing Heartbeat Rate Monitoring in a Wearable Device [PDF]

, 2018
This paper presents a novel approach, Adaptive Spectrum Noise Cancellation (ASNC), for motion artifacts removal in Photoplethysmography (PPG) signals measured by an optical biosensor to obtain clean PPG waveforms for heartbeat rate calculation.
Abt, Grant, Abt, Grant A., Cheng, Yongqiang, Peng, Yonghong, Xue, Dongfei, Yang, Dong, Ye, Hangyang, Zhu, Jin   +7 more
core   +2 more sources

Conductive Bonding and System Architectures for High‐Performance Flexible Electronics

Advanced Functional Materials, EarlyView.
This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley   +1 more source

Development of a Portable All-Wavelength PPG Sensing Device for Robust Adaptive-Depth Measurement: A Spectrometer Approach with a Hydrostatic Measurement Example

Sensors, 2020
Photoplethysmography (PPG), a noninvasive optical sensing technology, has been widely used to measure various physiological indices. Over-the-counter PPG devices are typically composed of a single-wavelength light source, namely, single-wavelength PPG ...
Shao-Hao Chen, Yung-Chi Chuang, Cheng-Chun Chang   +2 more
doaj   +1 more source

Predictors of Post Prandial Glucose Level in Diabetic Elderly [PDF]

, 2019
Post prandial glucose (PPG) level describes the speed of glucose absorption after 2 hours of macronutrient consumption. By knowing this, we could get the big picture of insulin regulation function and macronutrient metabolism in our body. In elderly, age-
Manungkalit, M. (Maria), Sari, N. P. (Ni)   +1 more
core  

Protocol of the SOMNIA project : an observational study to create a neurophysiological database for advanced clinical sleep monitoring [PDF]

, 2019
Introduction Polysomnography (PSG) is the primary tool for sleep monitoring and the diagnosis of sleep disorders. Recent advances in signal analysis make it possible to reveal more information from this rich data source.
Arsenali, Bruno, Bergmans, Jan W. M., Fonseca, Pedro, Haakma, Reinder, Hoondert, Bertram, Krijn, Roy, Lauwerijssen, Coen, Leufkens, Tim R., Maass, Henning, Overeem, Sebastiaan, Pevernagie, Dirk, Pillen, Sigrid, van den Heuvel, Leonie, van Dijk, Johannes P., van Gilst, Merel M., van Sloun, Ruud J. G., Vandenbussche, Nele   +16 more
core   +2 more sources

In Situ 3D Bioprinting: Impact of Cross‐Linking on the Adhesive Properties of Hydrogels

Advanced Functional Materials, EarlyView.
In situ 3D bioprinting enables the direct deposition of cell‐laden, adhesive biomaterials for on‐site tissue regeneration. This review provides a comprehensive overview of how cross‐linking influences the bioadhesive properties of hydrogels used in 3D bioprinting, highlighting cross‐linking triggers, bioadhesion mechanisms, polymer interpenetration ...
Odile Romero Fernandez, Mulazim Hussain Asim, Shumaila Arshad, Gergely Kali, Andreas Bernkop‐Schnürch   +4 more
wiley   +1 more source

4D‐Printable Poly(Thio)urethane Photoresins With Reactive Oxygen Species Responsiveness and Anti‐Inflammatory Functionality

Advanced Functional Materials, EarlyView.
This work introduces UV‐curable poly(thio)urethane (PSU) thermosets as 4D printable scaffolds responsive to oxidative stress. PSU networks with 100 wt.% polypropylene glycol (PPG) effectively suppress inflammatory markers in microglial cells to basal values.
Xabier Lopez de Pariza, Lolita Arévalo‐Lagos, Louise Breloy, Oihane Varela, Aitor Larrañaga, Juan F. Cadavid‐Vargas, Olaia Garagarza‐Goienetxea, Melissa Moya‐Granados, Vanessa Bagnarello, Haritz Sardon, Miryam Criado‐Gonzalez   +10 more
wiley   +1 more source