An optically thin resonator suspended over a substrate and illuminated with a laser forms an interference field that couples deflection of the resonator to absorption within it. For high enough laser powers, such resonators have been shown to be interferometrically transduced to stable oscillations due to the feedback between heating and deflection. The coupling between thermal stresses, deflec...

Si-based CMOS technology is facing a serious challenge in terms of power consumption variability. The increasing costs associated with physical scaling have motivated a search for alternative approaches. Hybridization of nano-electromechanical (NEM)-switch and Sibased CMOS devices has shown a theoretical feasibility for power management. However, a huge technical gap must be bridged before a tr...

Integrated chemical and biological sensors give advantages in cost, size and weight reduction and open new prospects for parallel monitoring and analysis. Biosensors based on nanoelectromechanical systems (NEMS) are the most attractive candidates for the integrated platform. However, actuation and transduction techniques (e.g. electrostatic, magnetomotive, thermal or piezoelectric) limit their ...

A lmost all electronic devices — from wristwatches to radios to computers — rely on electrical oscillators in some way. However, all oscillators are prone to losses, so it is necessary to keep adding energy to keep them oscillating. The most intuitive way to do this is to use feedback: take a small fraction of the output of the oscillator, amplify it and then, somehow, feed this amplified signa...

Analytic approximations are presented for the response of buckling-mode electrothermal actuators with very slender beams a width-to-length ratio W/L≤0.001 type found in nanoelectromechanical systems (NEMS). The results as closed-form solutions to Euler beam bending theory rather than by an iterative numerical solution or time-consuming finite element analysis. Expressions transverse deflections...

Introduction: Sierra Leone, one of the countries with highest maternal and perinatal mortality in world, launched its first National Emergency Medical Service (NEMS) 2018. We carried out a countrywide assessment to analyze NEMS operational times for obstetric emergencies access timely essential surgery within 2 hours. Moreover, we evaluated relationship between mortality. Method: collected preh...