We provide genuine medications at great cost: buy fluoxetine online or cheaper with actulal lamictal coupon, any dosage naltrexone 50 mg and other. Weight loss: buy orlistat online cheap.

August 19, 2017

2D Plasma Condensation in Monolayer Semiconductors

Dr. Alexander Battler
Department of Physics
NC State University
Email: awbatall@ncsu.edu

Abstract 1: The physics of strongly coupled plasma finds validity in both real and quasiparticle charged systems. The temperature-density scaling relationships that determine many-body interactions, and ultimately condensation, is realized for the electronic excitation quasiparticle (exciton) in semiconductors. This relatively low-energy platform grants access to a parameter space occupied by liquid condensation and heavily influenced by quantum effects. In the nearly 50 years since its discovery [1], exciton condensation in semiconductors has been limited to cryogenic temperatures, and are often generated with high-intensity pulsed lasers [2,3]. Due to their quantum confinement, reduced material screening, and long charge lifetime, 2D semiconductors are ideal materials for high-temperature exciton condensation. We have recently discovered dense plasma condensation in 2D layered materials that can be created above room temperature using less excitation power than a laser pointer [4]. A description of this discovery and its implications will be presented.

[Figure: Experimental photograph of laser-pumped plasma condensation in 2D semiconductors measured with photoluminescence microscopy [5].]

[1] Ya. E. Pokrovskii and K. I. Svistunova, ZhETF Pisma Redaktsiiu 9, 435 (1969)

[2] C. D. Jeffries, Science 189, 4207 (1975)

[3] R. Shimano, et al., Phys. Rev. Lett. 88, 5 (2002)

[4] Y. Yu, A. Bataller, R. Younts, Y. Yu, G. Li, A. Alexander, D. Puretzky, K. Gundogdu, and L. Cao, unpublished manuscript

[5] photo by A. Bataller; Gundogdu Laboratory

Temperature Dependent Interaction Parameter and Its Significance in Polymer Solar Cells

Dr. Long Ye
Department of Physics
NC State University
Email: lye4@ncsu.edu

Event Details
Date: 08/23/2017 (Wednesday)
Time: 2:00-3:00 PM
Venue: Toxicology Auditorium 2104