Optimization of bright, highly flexible, and humidity insensitive porphyrin-based oxygen-sensing materials

2021 ◽  
Author(s):  
Xiaolei Li ◽  
Emmanuel Roussakis ◽  
Juan Pedro Pedro Cascales Sandoval ◽  
Haley Marks ◽  
Lilian Witthauer ◽  
...  
Keyword(s):  
Health Monitoring ◽  
Oxygen Sensing ◽  
Medical Diagnostics ◽  
Oxygen Sensors ◽  
Phosphorescence Quenching ◽  
Fitness Tracking ◽  
Quenching By Oxygen

There is a strong demand for reliable oxygen sensors in the fields of fitness tracking, health monitoring, and medical diagnostics. Recently, oxygen-sensing materials based on phosphorescence quenching by oxygen have...

Novel optical oxygen sensing by phosphorescence quenching of palladium porphyrin self-assembled film on alumina plate

2000 ◽  
Vol 04 (02) ◽  
pp. 179-184 ◽  
Author(s):  
YUTAKA AMAO ◽  
KEISUKE ASAI ◽  
ICHIRO OKURA
Keyword(s):  
Oxygen Pressure ◽  
Oxygen Sensor ◽  
Response Times ◽  
Oxygen Sensing ◽  
Fast Response ◽  
Phosphorescence Quenching ◽  
Highly Sensitive ◽  
Optical Oxygen Sensor ◽  
Self Assembled ◽  
Quenching By Oxygen

An optical oxygen sensor based on the phosphorescence quenching of palladium tetrakis(4-carboxyphenyl)porphyrin (PdTCPP) self-assembled film (SAM) on alumina plate was developed. The phosphorescence intensity of PdTCPP film decreased with increasing oxygen pressure, indicating that the film can be used as an optical oxygen-sensing device based on phosphorescence quenching by oxygen. The ratio I0/I100 as a sensitivity measure of the sensing film is estimated to be 17.7, showing that the film is a highly sensitive device for oxygen pressure. The film obeyed Stern–Volmer plots with a multisite model and possessed good operational stability and a fast response. Response times are 36 s for deoxygenated to oxygenated conditions and 148 s for the reverse conditions.

Wearable energy-efficient fitness tracking system for sports person health monitoring application

2021 ◽  
pp. 1-13
Author(s):  
Dan Xie ◽  
Ming Zhang ◽  
Priyan Malarvizhi Kumar ◽  
Bala Anand Muthu
Keyword(s):  
Health Monitoring ◽  
Energy Efficient ◽  
Tracking System ◽  
Path Loss ◽  
Integrated Approach ◽  
Smartphone Application ◽  
Sensor Nodes ◽  
Engineering Research ◽  
Fitness Tracking ◽  
Monitoring Application

The high potential of wearable physiological sensors in regenerative medicine and continuous monitoring of human health is currently of great interest. In measuring in real-time and non-invasively highly heterogeneous constituents, have a great deal of work and therefore been pushed into creating several sports monitoring sensors. The advanced engineering research and technology lead to the design of a wearable energy-efficient fitness tracking (WE2FT) system for sports person health monitoring application. Instantaneous accelerations are measured against pulses, and specific walking motions can be tracked by this system using a deep learning-based integrated approach of an intelligent algorithm for gait phase detection for the proposed system (WE2FT). The algorithm’s effects are addressed, and the performance has been evaluated. In this study, the algorithm uses a smartphone application to track steps using the Internet of Things (IoT) technology. For this initiative, the central node’s optimal location is measured with the antenna reflectance coefficient and CM3A path loss model (IEEE 802.15.6) among the sensor nodes for energy-efficient communication. The simulation experiment results in the highest performance in terms of energy efficiency and path loss.

scholarly journals Internet of Things in the Bathroom: Smart Health-Monitoring Bidet System

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Sung-Phil Heo ◽  
Suyong Jeong
Keyword(s):  
Internet Of Things ◽  
Health Monitoring ◽  
Oxygen Sensors ◽  
Error Rates ◽  
The Internet ◽  
Spinal Diseases ◽  
International Protection ◽  
Pressure Oxygen ◽  
Smart Health ◽  
The Internet Of Things

The Internet of things (IoT) helps our everyday lives such as by monitoring objects and tracking behaviors in various settings, but studies on enhancing the bathroom experience are rare. This article describes full details about development and implementation of a smart health-monitoring bidet based on our study published previously in the conference. A smart bidet system is designed to monitor the users’ health through several contact-type sensors, such as pressure, oxygen, and thermometer. The system is equipped with a built-in artificial intelligence software platform and is designed to detect anal and spinal diseases. The attached sensors normally operate under waterproof conditions: we tested their performances under X6 international protection marking conditions. These devices were designed to operate properly even in extremely waterproof conditions. The temperature, pressure, and oxygen sensors of the bidet system had error rates of about 4.1, 0.6, and 1.1 percent, respectively.

scholarly journals Robust optical oxygen sensors based on polymer-bound NIR-emitting platinum(ii)–benzoporphyrins

2014 ◽  
Vol 2 (36) ◽  
pp. 7589-7598 ◽  
Author(s):  
L. H. Hutter ◽  
B. J. Müller ◽  
K. Koren ◽  
S. M. Borisov ◽  
I. Klimant
Keyword(s):  
High Performance ◽  
Oxygen Sensing ◽  
Oxygen Sensors ◽  
Covalently Bound

New high performance optical oxygen sensing materials based on NIR-emitting indicators covalently bound to various polymers overcome main limitations of the conventional sensors.

scholarly journals Perceived user preferences and usability evaluation of mainstream wearable devices for health monitoring

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5350 ◽  
Author(s):  
Yuxi Jia ◽  
Wei Wang ◽  
Dong Wen ◽  
Lizhong Liang ◽  
Li Gao ◽  
...  
Keyword(s):  
Product Design ◽  
Health Monitoring ◽  
Usability Evaluation ◽  
User Preferences ◽  
User Preference ◽  
Heart Health ◽  
Significant Difference ◽  
Health Related ◽  
Fitness Tracking ◽  
Fitness Trackers

Background There are many problems with fitness trackers, such as device usability, which limit their large-scale application, and relevant studies are limited in terms of their sample size and evaluation methods. The purpose of the study was to evaluate the perceived usability of various mainstream fitness trackers on the market, and to learn about user feedback on feature preferences for each device. Methods Trial use of seven mainstream fitness trackers (two smart watches and five smart wristbands) followed by a survey study were applied. The questionnaire was specifically developed for this study, which included two parts (user preferences and device usability in five dimensions). We recruited users to test the devices for at least 30 days and asked experienced users to provide feedback in order to evaluate each device, including the rating and user preference of each device. Results We received 388 valid questionnaires, in which users rated their responses on a five-point Likert scale. (1) User preference: the average user satisfaction was 3.50–3.86 (points), and the rating for willingness to buy averaged between 3.36 and 3.59. More users were willing to wear (58.3–81.3%) and purchase (56.8–83.0%) the devices than were not. The top three general feature preferences were daily activity tracking, heart health monitoring, and professional fitness tracking. The top three health-related feature preferences were heart rate monitoring, daily pedometer, and professional fitness tracking. (2) Usability evaluation: product design was rated from 3.57 to 4.00; durability, 3.63–4.26; ease of use, 3.70–3.90; added features, 3.30–3.83; and user-rated accuracy, 3.44–3.78. A significant difference was observed in the rating of product design and durability among the different devices (p < 0.05) score. Conclusions Users generally had positive subjective intent regarding fitness trackers but were less satisfied with their cost effectiveness. The users preferred health related features such as heart health monitoring, and professional fitness tracking. The rating of most of the current mainstream fitness trackers was fair with some significant differences among the devices. Thus, further improvement is needed.

scholarly journals Photo-patterned oxygen sensing films based on Pt porphyrin for controlling cell growth and studying metabolism

RSC Advances ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 924-930 ◽  
Author(s):  
Fei Zeng ◽  
Zengju Fan ◽  
Shanshan Wu ◽  
Xing Cheng ◽  
Yanqing Tian
Keyword(s):  
Cell Growth ◽  
Oxygen Sensing ◽  
Oxygen Sensors ◽  
Cell Respiration ◽  
Affect Cell Growth

Developing biocompatible and photo-polymerizable hydrogels with oxygen sensors for microengineering to affect cell growth and monitor cell respiration simultaneously.

Medical Diagnostics and Health Monitoring

2004 ◽  
pp. 445-460 ◽  
Author(s):  
Krishna C. Persaud ◽  
Anna Maria Pisanelli ◽  
Phillip Evans
Keyword(s):  
Health Monitoring ◽  
Medical Diagnostics

scholarly journals Optimization of Ormosil Glasses for Luminescence Based Dissolved Oxygen Sensors

2010 ◽  
Vol 161 ◽  
pp. 1-11 ◽  
Author(s):  
J. Palmeira ◽  
L. Lopes ◽  
A.J. Silva ◽  
P.A.S. Jorge ◽  
A. Oliva
Keyword(s):  
Dissolved Oxygen ◽  
Optical Sensors ◽  
Ruthenium Complex ◽  
Oxygen Sensing ◽  
Sol Gel ◽  
Dip Coating ◽  
Oxygen Sensors ◽  
Quenching Efficiency ◽  
Sol Gel Films ◽  
The Impact

In the recent years, sol-gel films have been intensively used in optical sensors configurations. Due to its hydrophobic nature, ormosil films have been reported to be a promising supporting matrix for oxygen sensing dyes for measurements in aqueous media. In this work, the impact of the sol-gel host fabrication parameters in the characteristics of the resulting oxygen sensing membranes is thoroughly evaluated. Different combinations of organic-inorganic precursors, with different aging times, were tested as oxygen sensors. All the solution were doped with ruthenium complex Ru(II)-tris(4,7-diphenyl-1,10-phenanthroline) to introduce oxygen sensitivity. Thin films were produced by dip coating of glass slides. The oxygen sensitive films were tested in aqueous phase in equilibrium with different oxygen gas compositions, using a phase-modulation technique. Sensor performance parameters such as Stern-Volmer constant, quenching efficiency and lifetime response are reported. The data obtained clearly indicates that increased aging times and longer organic groups produce sensors with the highest sensitivity to dissolved oxygen. From all sol-gel films produced, the BTEOS:TEOS (1:1) mixture is the most promising for sensor construction.

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