OSA Student Chapter Meeting
SPEAKER: Yusef Maleki
TITLE: Quantum Correlations: Detection, classification and quantification
To develop a volumetric display of the kind we see in science fiction movies is a dream of many display researchers, including us. Here, we show a new volumetric display with microbubble voxels. The microbubbles are three- dimensionally generated in liquid by focused femtosecond laser pulses. The use of a high-viscosity liquid, which is a key part of the development of this idea, slows down the movement of the microbubbles, and, as a result, volumetric graphics can be displayed. This volumetric bubble display has a wide-angle view, simple refreshing, and no addressing wires, since the transparent liquid is accessed optically rather than electronically. It achieves full-color graphics composed of light-scattering voxels controlled by illumination light sources. Furthermore, a holographic laser drawing method based on a computer-generated hologram displayed on a liquid-crystal spatial light modulator controls the light intensity of the microbubble voxels with an increase in the number of voxels per unit time and the spatial shaping of the voxels.
Citation: Kumagai, K., Hasegawa, S. & Hayasaki, Y. Volumetric bubble display. Optica 4, 298 (2017).
SPEAKER: Jonathan Thompson
TITLE: Volumetric bubble display
It is now widely accepted that migratory birds use the Earth's magnetic field to guide their movements over long distances each year. However, the exact biophysical mechanism enabling birds to perceive cues from geomagnetic fields for navigation has not yet been well established and remains largely controversial. In this talk, I will first review some remarkable characteristics of magnetic navigation obtained from behavioral experiments with migratory birds. Then I will briefly introduce the radical pair model that may provide physical basis for magnetic compass in birds.
Thursday, April 20, 2017
IQSE 578, 12:30 noon
Mitchell Physics Building
Department of Physics and Astronomy
Institute for Quantum Science and Engineering
Texas A&M University
(Pizza lunch as usual. Newcomers welcome!)
Host: Sasha Zhdanova