Y. Li Professor Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macao SAR 999078, China; School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen Graduate School, Shenzhen 518055, China e-mail: [email protected] Modeling and Control Analysis of a 3-PUPU Dual Compliant Parallel Manipulator for Micro Positioni...

We report on an opto-mechanical resonator with vibration excited by compressive radiation pressure via stimulated Brillouin scattering [SBS]. We experimentally excite a mechanical whispering-gallery mode (WGM) from an optical WGM and detect vibration via the red Doppler shifted (Stokes) light it scatters. We numerically solve the stress-strain equation to calculate the circumferentially circula...

High-precision magnetic micro-sensor is an interdisciplinary subject of magnetic field measurement techniques and micro-electromechanical systems (MEMS) technology. A micro-fluxgate magnetic sensor based MEMS technology was designed and fabricated in this paper. This device is a micro-magnetic sensor with a symmetric construction, closed magnetic circuits and differential form. A 25μm thick Flu...

Acoustic signals in the megahertz to gigahertz regimes enable applications phononic, electric and photonic circuitry. Hence, advancement these multi-physics circuitries requires studying transmission of elastic waves micro/nano-electromechanical systems. Therefore, our work investigated flexural unidirectional phononic waveguides coupled nano-electromechanical drumhead resonators. In particular...

Structural Health Monitoring systems are increasingly being installed throughout the world most especially in areas vulnerable to high levels of seismic activity but also within large structures subject to sub-surface landslip, mining, or externally induced stress and vibration. Strong Motion seismic sensor technology is evolving in respond to these emerging demands with traditional Electromech...

The demand of small size electronic systems has been increasing for several decades. The physical size of systems is reduced due to advancements in integrated circuits. With reduction in size of electronic systems, there is also an increasing demand of small and low cost antennas. Patch antennas are one of the most attractive antennas for integrated RF front-end systems due to their compatibili...

In this paper, design and fabrication of an actuated parallel-plate mirror based on a 3D-printer is described. The mirror and electrode layers are fabricated separately and assembled thereafter. The alignment is performed by dowel pin-hole pairs fabricated on the respective layers. The electrodes are formed on the surface of the electrode layer by Au ion sputtering using a suitable mask, which ...

The traditional microscopic speckle interferometer has limited applications in engineering due to its small field of view. In this paper, we propose a large-field which embeds two doublet lens groups the improved Mach–Zehnder optical path structure expand At same time, new system can reduce coherent noise reflected light path. We use measure dynamic displacement process entire surface microchip...

Modern Magnetic Resonance Imaging (MRI) systems permit parallel, spatial-encoded MRI (pMRI) and as such it is now possible to have up to 128 adjacent coil elements in a coil array [1]. Together with reduced imaging times, pMRI can significantly help to enhance the signal to noise ratio (SNR) over extended fields of view (FOV) [2]. However, a large number of channels subsequently create new tech...

The DOA (direction of arrival) estimation of seismic signals from the moving target on the ground bears great significance for unattended ground systems. The traditional DOA estimation of seismic signals is achieved by a sensor array and its corresponding algorithms. MEMS (Micro-ElectroMechanical Systems) vector vibration sensor, however, gets the vector information over the propagation of seis...