Hydrogen Gas Trapping in Delayed Fracture Utilizing Screwed Small Piezo-Electric Sensor

Obstructive Sleep Apnea Screening Using a Piezo-Electric Sensor

In this study, we propose a novel method for obstructive sleep apnea (OSA) detection using a piezo-electric sensor. OSA is a relatively common sleep disorder. However, more than 80% of OSA patients remain undiagnosed. We investigated the feasibility of OSA assessment using a single-channel physiological signal to simplify the OSA screening. We detected both snoring and heartbeat information by ...

Hydrogen Gas Sensors Utilizing Perylene-Imide Derivatives with Pyridyl Rings

Perylene-imide derivatives are industrially important pigments that exhibit a variety of shades from red via maroon to black. In the present investigation, we have synthesized novel perylene-imide derivatives with pyridyl rings in an attempt to apply them for H2 gas sensors based on proton acceptors. The two N atoms of the pyridyl rings which work as proton acceptors are found to remain unbound...

A Three - Channel Piezo - Electric Pressure Recorder

Energy Harvesting from Vibrating Piezo-Electric Structures

The process of capturing the energy from a system’s environment or surrounding and converting it into usable electrical energy is termed as energy harvesting. One form of energy harvesting is to employ piezoelectric materials to harvest energy from vibrating structures. These materials have the ability to absorb the mechanical energy and transform it into electrical energy that can be used to p...

Piezo-electric Thick Films for Sensing

Monolithic piezoelectric sensors commonly used for acoustic emission and ultrasonic inspection are non-conforming, bulky, costly and heavy. This means they do not fit well to complex geometries, they can be susceptible to damage, and on larger structures their cost and weight can be prohibitive. An alternative to this is the use of piezo-electric thick films, which comprise of piezo-electric pa...