The Beckman Institute Graduate Student Seminar Series presents the work of outstanding graduate students working in Beckman research groups. The seminar starts at Noon in Beckman Institute Room 1005 and is open to the public. Lunch will be served.

Audio-frequency optical coherence elastography and applications
Xing Liang

Optical coherence elastography (OCE) is a novel elastography technique that can measure tissue biomechanical properties using mechanical excitations and in vivo optical coherence tomography (OCT). This technique has great potential for detecting mechanical property changes in the tissue microstructure— such as tumor invasion— due to its high resolution, high speed and non-invasive features. However, previous OCE techniques usually took long time for measurements, typically in the scale of minutes, which makes it hard for in vivo applications.  We implemented an audio-frequency OCE system based on a piezo stack for mechanical excitation. This technique takes only seconds for elastography measurements, which makes in vivo and 3D applications possible. Results from tissue phantoms and rat tumor tissues will be shown from the OCE system.

Anisotropic strain induced curvature in CdSe/CdTe nanorod heterostructures
Hunter McDaniel