Daniels Nonlinear Lab [NCSU Banner]

Dept of Physics


We conduct experiments on nonequilibrium/nonlinear systems including granular materials, gels, surfactants, and thin liquid films. Active areas of investigation include:

force chains in granular material
granular materials: phase transitions, statistical mechanics, sound propagation, and segregation
fracture in soft systems
starburst droplet spreading on gel
convection in lawn grasses
dynamics of natural systems
visualizing surfactant dynamics at fluid surfaces
fluorescent visualization of a surfactant on waves

Contact Information

Dr. Karen Daniels258C Riddick Lab 919-513-7921
Lab229-234 Riddick Lab919-513-7965 or -1472
Offices251-252 Riddick Lab919-513-3914
Main Physics Office 421 Riddick Lab 919-515-2521

Mailing Address
Dept. of Physics
Box 8202
North Carolina State University
Raleigh, NC 27695
       Shipping Address
Dept. of Physics
421 Riddick Lab
2401 Stinson Dr.
North Carolina State University
Raleigh, NC 27695


We are located in the Physics Department in Riddick Lab (see campus map) on the main campus of NC State University, at 2401 Stinson Dr. If you drive to campus, the information booth (marked by a star on the campus map) will direct you to parking. The closest parking deck to Riddick is the Cates Avenue "Coliseum" Deck (cross under the tracks using the nearby tunnel, then turn right to face Riddick). Our offices/labs are on the 2nd floor.

News from the Lab

  • Join us at the Lorentz Center in November 2015 to discuss current research on Capillarity of Soft Interfaces (February 2015)

  • Talks from the Pan-American Advanced Studies Institute on Particulate Media are available here: http://pasi2014.njit.edu/Lectures.htm (November 2014)

  • Congratulations to Rebekah Lee, who has been awarded an Undergraduate Research Award for the 2014-15 academic year. She will be conducting research on the acoustic properties of granular materials. (August 2014)

  • The American Physical Society now has an official home for soft matter physics: GSOFT. Consider joining this new unit! (June 2014)

  • Congratulations to Austin Reid, who won a Chateaubriand Fellowship to spend seven months in France studying the mechanics of folding with Frederic Lechenault at ENS-Paris. (May 2014)

  • Welcome to visitor Marion Grzelka, from ENS-Cachan, who will performing experiments this summer on the fracture statistics of ultrasoft gels. (April 2014)

  • Congratulations to senior Alex Mauney and math grad student Melissa Strait, on being awarded NSF Graduate Fellowships. Alex will begin the Physics PhD program this fall at Cornell University. (April 2014)

  • Congratulatons to grad student Scott Lindauer was awarded an NC Space Grant to support research on strategies for exploration of rubble-pile asteroids, using laboratory analogues of zero-g. (April 2014)

  • Congratulations to sophomore Mia de los Reyes, on being awarded a Goldwater Scholarship. They'll be lighting the Belltower in her honor on Friday, April 11, and there will be a small celebration there at 7pm. (March 2014)

  • Congratulations to former lab member James Puckett, who will be joining the faculty at Gettysburg College in Fall 2014. (March 2014)

  • News from the APS March meeting: the press has picked up our recent work with Troy Shinbrot on charging of granular materials. Experiments in our lab are helping understand how and why "earthquake lightening" might occur. [1] [2] [3] [4] (March 2014)

  • Congratulations to Carlos Ortiz for his PhD defense and graduation. His next move is to to the University of Pennsylvania, to work with Doug Jerolmack and Doug Durian on fluvial granular materials. (December 2013)

  • Congratulations to graduate student Stephen Strickland for the successful completion of his preliminary exam. (November 2013)

  • Karen Daniels is honored to be named a University Faculty Scholar for the next 5 years. (November 2013)

  • Bob Behringer will be celebrating his 65th Birthday in October 2013, and we're throwing him a Festschrift. Read more about it here: http://bobfest.phy.duke.edu

  • Congratulations to Ted Brzinski for receiving a Postdoc Professional Development Award which will support his development of a new laboratory on entroptic entropy for PY413 "Thermal Physics" (September 2013)

  • Congratulations to Michael Kerley for receiving an Undergraduate Research Award to support his research on interacting crack pairs (August 2013)

  • Congratulations to Eli Owens, who has joined the faculty of Presbyterian College as a visiting professor (August 2013)

  • Welcome to Ted Brzinski, who has joined our lab as a postdoc. He received his PhD from the University of Pennsylvania, and will be working on the acoustical properties of sheared granular materials. (July 2013)

  • Our work on measuring (or not) the equilibration of temperature-like variables in granular materials is the subject of an APS "Synopsis" and an NCSU News Item (January 2013)

  • Congratultions to Sara Berry for receiving an Undergraduate Research Award to support her research on non-circular granular materials (December 2012)

  • Congratulations to Dr. Eli Owens, who defended his PhD. But we're not losing him yet: next semester he will be the mastermind behind the Physics Department's new PY205 recitations (November 2012)

  • An image from our recent PRE on the influence of force chain network topology on sound propagation was included in the October 2012 Kaleidoscsope. (October 2012)

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NCSU Image Processing Workshop 2013

Date: Friday, January 4, 2013

Location: Hill Library, 1st floor Learning Commons "Presentation Practice Room"

We are hosting a one-day workshop where grad students and postdocs can share their image-processing techniques with each other in an informal setting. Participants are invited to make a short (10 minute) presentation on an image-processing technique they use in their work, or an even shorter (5 minute) presentation on an image-processing problem they would like to solve.

To register, send an email to Karen Daniels with your name and lab group/affiliation. If you would like to make a presentation, also send a sample image that you process and a short title. Please state whether you wish to make a 10-minute "technique" talk or a 5-minute "unsolved problem" talk. Listeners are also welcome.

Draft Schedule

  • 9:30 Greetings & Introductions

  • 9:45 Short talks (bring either your own laptop or a USB drive)

    • Casey Burleyson (MEAS): Separating Cloud and Ocean Pixels in IR Brightness Temperature Images

    • Lindsay Hussey (MSE): Interfaces and Dislocations in TEM/STEM Images

    • Matthew Miller (MEAS): Detecting Drizzle from Space: Challenges in Conditional Classification, Coregistration, and Blob Detection

    • Carlos Ortiz (Physics): Using the Matlab-ImageJ Interface

    • Andrew Hall (MEAS): TBD

  • 11:00 Breakout groups on various themes (lines, particles, interfaces, tracking dynamics, etc)



  • National Science Foundation: "Acoustic Probes of Granular States" (DMR-1206808, Daniels), "FRG: Collaborative Research: Dynamics of Thin Liquid Films: Mathematics and Experiments" (DMS-0968258, Daniels), "Collaborative Research: Intermittent and steady state processes in orographic precipitation" (ATM-0908420, Yuter)
  • Department of Energy: "Collaborative Research: Cloudiness Transitions in Marine Stratocumulus Clouds Near the Azores" (DE SC0006701, Yuter)
  • NASA: "The Global Characteristics of Marine Stratocumulus Clouds and Drizzle" (NNX11AE98G, Yuter)

Gallery of Images

BurleysonYuter.png Hussey.jpg MillerYuter.png
OrtizRiehnDaniels.png PennyThompsonDaniels.png PuckettDaniels.png

Thin Fluids Day 2010

Saturday, April 17, 2010

1108 SAS Hall, NC State University

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Thin Fluids Day 2011

Thursday, June 9, 2011

1102 SAS Hall, NC State University

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:: Updated: 27 Nov 2012 :: LABlog (restricted) :: Copyright © 2012 by Daniels Lab :: [Powered by Blosxom]