Zhiqiang Liang

TL;DR: In this article, an elliptical ultrasonic vibrator attached with a sapphire substrate was set up on a multi-axis CNC controlled machining center equipped with a single point diamond tool, and the effects of ultrasonic vibration on the critical depth of cut a c for the ductile-brittle transition region and the material removal ratio were investigated by the examination of the scratching groove surfaces with SEM and AFM.

TL;DR: In this article, a two-dimensional ultrasonic assisted grinding (UAG) technique is proposed to achieve high material removal rate and high surface quality in the machining of hard and brittle materials such as monocrystal silicon.

TL;DR: In this paper, a series of grinding experiments under the presence/absence of ultrasonic vibration assistance are performed, and the grinding forces and work-surface roughness are measured, while the wheel surface is examined too.

TL;DR: In this article, an overview of optical microstructure fabrication through glass molding and highlights the applications of the optical microstructures in mold fabrication and glass moulding are discussed.

TL;DR: The thermo-mechanical properties of ChG are introduced and models the elastic-viscoplasticity constitutive of Chg and the latest advancements in ChG precision molding are detailed, including the aspherical lens molding process, the ChG freeform optics moldingprocess, and some new improvements in PGM.