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Interaction-induced conducting–non-conducting transition of ultra-cold atoms in one-dimensional optical lattices

Creator:

Chien, Chih-Chun, Gruss, Daniel, Di Ventra, Massimiliano, and Zwolak, Michael

Abstract:

The study of time-dependent, many-body transport phenomena is increasingly within reach of ultra-cold atom experiments. We show that the introduction of spatially inhomogeneous interactions, e.g., generated by optically controlled collisions, induce negative differential conductance in the transport of atoms in one-dimensional optical lattices. Specifically, we simulate the dynamics of interacting...

Resource Type:

Article
Study of Organic Semiconductors Using Time-Resolved Charge Measurements at the Microscale

Creator:

Wallace, Richard

Abstract:

Understanding charge transfer in organic semiconductors is important for developing devices like organic light emitting diodes and flexible electronics. Optical tweezers have been used in many disciplines for trapping, manipulating, and analyzing microscopic objects such as microspheres, micro-organisms, and other colloidal particles. Using optical tweezers, studies have measured the average...

Resource Type:

Undergraduate Thesis
Simulating dynein’s powerstroke using Brownian dynamics

Creator:

Capek, Elliott

Abstract:

Dynein is a motor protein which transports cargo along tracks inside the cell. Like related motor proteins kinesin and myosin, dynein uses cellular energy to take steps with its two foot domains. Unlike kinesin or myosin, dynein’s stepping pattern is highly varied: it can take steps between zero and 60nm...

Resource Type:

Undergraduate Thesis