Huang C.H. – TechConnect Briefs

Display Compatible pMUT Device for Mid Air Ultrasound Gesture Recognition

Huang C.H., Demi L., Mao S., Jeong Y., Cheyns D., Rottenberg X., Rochus V., IMEC, BE

1. BACKGROUND Recently, piezoelectric micromachined ultrasound transducers (pMUT) have proved their potential to make a reliable 2D ultrasound array. As shown in Fig. 1, the displacement of piezoelectric material layer is galvanised by electrical signals/acoustic [...]

Preparation of Nanosize Copper Recycled from an Electroplating Wastewater

Huang C.H., Wang H.P., National Cheng Kung University, TW

Chemical structure of copper recycled directly from an electroplating (EP) wastewater for preparing core-shell nanoparticles has been studied by X-ray based spectroscopy in the present work. Experimentally, about 40-50% of copper in the EP wastewater [...]

Formation mechanism of copper-silver metal nanoparticle encapsulated in carbon shell

Kang H.Y., Wang H.P., Huang C.H., Tsai C.K., National Cheng Kung University, TW

The formation mechanism of nanosize copper-silver encapsulated in the inert carbon shell (CuAg@C) has been studied by in-situ small angle X-ray scattering (SAXS) spectroscopy. SAXS is a very useful method in studies of electron density [...]