Department of Chemistry & Chemical Biology

MSC03 2060
300 Terrace St. NE
Albuquerque, NM 87131-0001

Physical Location:
Clark Hall

Phone: 505-277-6655

Seminar:

Using Sharp Tips to Control Optical Properties of Single Emitters

**Seminars begin at 4:00 PM and will be held in Clark Hall Room 101**

February 19, 2016

Jordan Gerton

The interaction of light and matter includes an evanescent component that is tightly bound at the material interface. Near a sharp tip, these optical “near fields” can be concentrated to below the diffraction limit, thereby enabling optical microscopy with nano-scale resolution. The near-field interactions between a single emitter and the tip can also modify the local density of optical states, which can impart simultaneous control over the emission direction and polarization, and can be used to suppress the intensity variations resulting from quantum fluctuations (blinking). In this talk, I will discuss some recent work showing how metallic tips can modify the emission properties of semiconductor nanocrystal quantum dots. If there is sufficient time, I will also discuss the novel optical properties of gallium nitride nanowires, which exhibit light trapping and surface-specific fluorescence spectra. These nanowires are being investigated for solar- driven photo-electrochemical water splitting.