Charles E. Kinney ∗ System Identification and Control Laboratory Department of Mechanical and Aerospace Engineering University of California, San Diego 9500 Gilman Drive La Jolla, California 92093-0411 Email: [email protected] Raymond A. de Callafon System Identification and Control Laboratory Department of Mechanical and Aerospace Engineering University of California, San Diego 9500 Gilman Dri...

We identify signatures of the intrinsic nonlinear interaction between light and mechanical motion in cavity optomechanical systems. These signatures are observable even when the cavity linewidth exceeds the optomechanical coupling rate. A strong laser drive red detuned by twice the mechanical frequency from the cavity resonance frequency makes two-phonon processes resonant, which leads to a non...

Finite photon lifetimes for light fields in an opto-mechanical cavity impose a bandwidth limit on displacement sensing at mechanical resonance frequencies beyond the loaded cavity photon decay rate. Opto-mechanical modulation efficiency can be enhanced via multi-GHz transduction techniques such as piezo-opto-mechanics at the cost of on-chip integration. In this paper, we present a novel high ba...

Department of Electrical and Computer Engineering, National University of Singapore, 1 Engineering Drive 3, Singapore 117576 2 Data Storage Institute, DSI Building, 5 Engineering Drive 1, Singapore 117608 3 Nanoscience & Nanotechnology Initiative, National University of Singapore, 2 Engineering Drive 3, Singapore 117576 4 Department of Mechanical Engineering, National University of Singapore, 2...

The ability to make intelligent decisions with respect to reducing the energy consumption of mechanical disk drives is dependent upon accurately tracking and accounting the runtime energy consumption of the mechanical and electrical components of the drive in both active and idle states. This work outlines a simple methodology for creating accurate hard drive runtime energy models through the u...

Present study focuses on the micro-structural and mechanical behavior effect of friction time for similar (AISI 316-AISI 316 and AISI 304-AISI 304) and dissimilar (AISI 304-AISI 316) joint during continuous drive friction welding. The welding carried out with different friction time: 6.5, 8.5 and 10 s while kept all other conditions constant. The effect of that time on the strength, structural ...