Wooseok Kim

Overcoming The Water Vulnerability Of Electronic Devices: A Highly Water‐Resistant ZnO Nanodevice With Multifunctionality

In general, electronic devices are highly vulnerable to water exposure, which causes serious operational failure of the devices and potentially dangerous electrical shock to the user. Even though current electronics are well sealed and the integrated devices inside are packaged with polymer passivation, the penetration of a single water droplet can be fatal to electrical circuits. To prevent water from causing device failure, and even more serious electric shock, water resistance would be an ideal and useful feature for the device. One way to produce a waterproof electronic device is to incorporate nonwetting, superhydrophobic components into the electronic device. The applications of superhydrophobicity have attracted much attention in various fi elds, including optical devices, [ 1–5 ] catalysis, [ 6 ]

Freestanding CdS nanotube films as efficient photoanodes for photoelectrochemical cells

Freestanding CdS nanotube films were synthesized for the first time using ZnO nanorod arrays as a sacrificial template. The CdS nanotube films exhibited excellent photo-anodic activities in a photoelectrochemical (PEC) cell.