Physics and Astronomy Colloquium Series

The Physics and Astronomy Colloquium Series is open to all members of the university. Unless otherwise noted, talks are held on Thursday afternoons at 4:00-5:20 in Mendocino 1015. Schedule is regularly updated as dates, titles, and abstracts are received. Please check back often. To receive updates about the Colloquium Series, please join our Events Mailing List. For past semesters' series, see our archive.

Spring 2018 Semester Schedule

Next Seminar

*Tuesday, February 27, 2018

Steven Morgan
University of Minnesota, Morris

“Probing the Dynamics of Interacting Nuclear Spins in Solids”

Magnetic resonance imaging is a part of nuclear magnetic resonance (NMR). During a normal imaging session the nuclear spins of hydrogen, which are parallel to their magnetic moments, are almost equally aligned with and opposed to the strong magnetic field. Fewer than 1 out of 100,000 of them are aligned with the magnetic field yet lack a corresponding spin aligned against the field, giving a net polarization of less than 0.001%. The resulting low sensitivity of NMR serves to make large, expensive magnets that generate strong magnetic fields common for NMR studies since without the strong fields the polarization would be even smaller. Techniques that increase the nuclear spin polarization well beyond the thermal equilibrium value are of interest since they allow new experiments to be conducted. These hyperpolarization techniques often use solid materials and thereby involve solid state nuclear spin dynamics. Understanding the spin dynamics is important for the application of the hyperpolarization methods and solid state nuclear spin dynamics is also an example of many-body physics. In addition to introducing these topics I will discuss several studies of solid state nuclear spin dynamics and prospects for future work.

.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

January 25, 2018
Dr. Ivan Dozov
Université de Picardie Jules Verne, France
"Twist-Bend Nematic Phase: Structure, Elasticity and Electric-Field Effects"

*Tuesday*, February 13
Dr. Matthew Harrington
University of Pennsylvania
"How Do Disordered Materials Flow?: 3D Imaging and Machine Learning"

February 15
Dr. Kyle Welch
University of Minnesota
"Toy Robots, Simulated Flocks, and Chaotic Waves: Emergent Behavior in Nonequilibrium Systems"

*Tuesday*, February 20
Mr. Paulo Costa
University of Nebraska - Lincoln
"How to Build a Nanomaterial -  Creating Molecular Electronics from the Bottom-up Using Building Blocks"

*Tuesday*, February 27
Prof. Steven Morgan
University of Minnesota, Morris
"Probing the Dynamics of Interacting Nuclear Spins in Solids"

March 1
Dr. Eliza Morris
Sacramento State
"TBA"

March 8
Prof. Andrew Wetzel
UC Davis
"Simulating the Universe, One Galaxy at a Time"

March 15
Mr. Eric Copenhaver
UC Berkeley
"TBA"

April 12
Prof. Xander Petersen
UC Merced
"TBA"

April 19
Dr. Sage Bauers
National Renewable Energy Laboratory
"TBA"

April 26
Prof. Katy Grimm
CSU East Bay
"TBA"

May 3, 2018
Senior Project Talks

May 10, 2018
Senior Project Talks