Background Piezo-electric surgery is a procedure used recently in Oral-Maxillo-Facial Surgery [1]. The basic mechanisms are ultrasounds, that working in a frequency range between 25 and 30 Khz, determining very low oscillations on the tip of the handpiece, with effectiveness in cutting hard tissue but absolutely atraumatic on the soft tissue [2], with bio-stimulating effects. Piezo-electric cut...

Biological membranes undergo noticeable thermal fluctuations at physiological temperatures. When two approach each other, they hinder the out-of-plane of other. This hindrance leads to an entropic repulsive force between which, in interplay with attractive and forces owing other sources, affects a range biological functions: cell adhesion, membrane fusion, self-assembly, binding–unbinding trans...

We report on a method for characterizing the tuning capabilities of small-bandwidth external-cavity diode lasers. The step response of a piezo-driven Littman-Metcalf external-cavity diode laser and the compensation of its optoelectromechanical frequency response is investigated. When an approximately 50-V compensated Gaussian pulse is applied to the piezo element, a detuning of 13.6 GHz is obse...

“The idea is to generate electric energy from the mechanical movements of living beings”. When living beings make mechanical movements, they spend their energy some of which is converted to work. The wasted energy can be converted to electrical energy with the help of nano-generators. The nano generators have a piezo electric crystal (say ZnO) which is made up of nanoparticles. These piezo elec...

Flexoelectricity is a property of dielectric materials whereby they exhibit electric polarization induced by strain gradients; while this effect can be negligible at the macroscale, it become dominant nanoscale, where gradients turn out to tremendous. Previous works have demonstrated that flexoelectricity coupled with piezoelectricity enables mechanical writing ferroelectric polarization. When ...

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 ...

Pedometers are used in many studies because physical activities can be simply assessed using them. In addition to the spring-levered type, piezo-electric pedometers have recently been used. However, their accuracy in children has not been investigated in previous studies. In this study, we investigated the accuracy of spring-levered pedometer and piezo-electric pedometer step counts in comparis...