||1. This group uses two MOCVD and two MBE reactors for the studies of crystal growth (GaN and ZnO) and LED fabrication. Breakthroughs include: (1) fabrication of regularly patterned, multi-section, core-shell nitride nanorod LED array device; (2) fabrication of surface plasmon coupled LEDs with various metal nanostructures for enhancing emission efficiency, reducing efficiency droop effect, and increasing LED modulation bandwidth (reaching the world record of 528.8 MHz); (3) growth of highly conductive Ga-doped ZnO (GaZnO) nanoneedles for field emission and light extraction applications; (4) fabrication of bendable GaN-based LED of enhanced efficiency; and (5) highly conductive GaN-based p-type layer for LED application. 2. In plasmonics-based bio-photonics research, recent breakthroughs include the fabrication of surface-modified Au nanorings with localized surface plasmon resonance wavelength in the range of 1000-1300 nm to achieve the deepest light penetration into tissue for the demonstration of simultaneous photothermal and photodynamic therapies of tumor. reactors for the studies of crystal growth, material and optical characterizations, and device fabrication for solid-state lighting and solar cell applications. Recent breakthroughs include the successful fabrication of high-quality, phosphor-free, white-light light-emitting diodes (LEDs) using the invented prestrained MOCVD growth technique.2. In nano-photonics research, this group focuses on surface plasmonics for energy technology and bio-sensing applications. Recent breakthroughs include the successful fabrication of LEDs with output intensity enhanced by surface plasmon coupling.3. In bio-photonics research, the major goal is to build a handy optical coherence tomography (OCT) system and associated probes for early diagnosis of oral cancer. Currently, two OCT systems have been delivered to National Taiwan University Hospital for clinical use.