Joseph R. Gladden

Assistant Professor of Physics, University of Mississippi, NCPA 1062, 662-915-7428, jgladden AT

Recent News from the Gladden Group

  • August 2014
    I was asked to serve on the Steering Committee of the National Spectrum Consortium (NSC). The NSC aims to be a partnership between industry, academia, and the government to make better use of the telecommunications spectrum for wireless applications through research collaborations, policy, and business partnerships.
  • Spring 2014
    I was elected to Chair the Physical Acoustics Technical Committee of the Acoustical Society of America and as a "Member at Large" for the Group on Instrumentation and Measurement Science of the American Physical Society.
  • February 2014
    In the Spring of 2013, I was asked to serve as the Interim Director for the National Center for Physical Acoustics at the University of Mississippi. After a formal search, I was selected to be the permanent Director in the Winter of 2014. The NCPA is a wonderful resource for the international acoustics community and the University and I am proud to help guide this organization into it's future.
  • October 2011
    1. The details for the 2012 Physical Acoustics Summer School are posted! See the details here...

    2. Rasheed Adebisi is scheduled to defend his PhD thesis on Resonant Ultrasound Spectroscopy Studies of Metallic Hydride Systems in November 2011 - Good luck Rasheed!
  • Jan. 2011
    Over the Fall 2010 several new papers have come out of our lab:
    1. G. Li and J.R. Gladden,
    High Temperature Resonant Ultrasound Spectroscopy: A Review, invited paper for Int. J. of Spectroscopy, 206362, (Dec 2010) [doi:10.1155/2010/206362]. [web, PDF]
    2. J.R. Gladden, C.E. Skelton, J. Mobley,
    Shear waves in viscoelastic wormlike micellar fluids, J. Acoustical Society of America - Express Letters, 128 (5), (June 2010). [DOI: 10.1121/1.3492794] [web, PDF]

    -- Another important event is my graduate student Rasheed Adebisi has passed his perspectus and is well on his way to completing his thesis on High Temperature and Pressure Resonant Ultrasound Spectroscopy Studies of Palladium Hydrides. Congrats Rasheed!

    -- A significant effort over the fall was preparing for the 2nd Pan-American/Iberian Meeting on Acoustics in Cancun Mexico at which I delivered 3 papers on: shear waves in wormike micelle fluids, high temperature methods in RUS, and impulsive excitation of normal modes in a cylinder.

    -- In early February I will be making a recruiting trip to 5 colleges and universities in TN and AR. I have posted some powerpoint slides which highlight our department and recent research efforts by our various groups. The slides can be downloaded here. [ PDF (17MB)]

  • July 2010:
    I have put together a web page summarizing my tenure application portfolio. If you want to see a synopsis of my professional life, this is a good place to look.
    We also have several journal papers coming out this summer. Preprints will be posted as they are available.
    1. Physical Review B paper coming out soon on the high temperature elastic moduli of the thermoelectric material silicon germanium in which we see signatures of dopant precipitation. Phys. Rev. B 82, 045209 (2010). [download]
    2. An invited review paper for the International Journal of Spectroscopy on high temperature resonant ultrasound spectroscopy.
    3. A JASA Express Letter on shear wave propagation in viscoelastic worklike micelle fluids.
  • April 2010:
    I organized the first annual Physics Spring Fling Demo Show at Fulton Chapel. We put on about 1 hours worth of demos for the community and had about 10 more demos setup for people to play with afterwards. We had about 150 show up and everyone seemed to have a great time! [ download video (25MB) ].
  • March 2010:
    Congratulations to DR. Guangyan Li! Guangyan successfully defended his Ph.D. thesis and will officially graduate in May. Guangyan will be moving on to a post-doc position in biomedical ultrasound at Indiana University working with Dr. Jim McAteer. We will miss him in the lab and wish him the best of luck.
  • October 2009:
    • The big Physics Dept. Halloween Extravaganza will be held on Friday 10/30 from 7:00 - 10:00! There will be hands on demos, liquid nitrogen icecream, and I'll be running a series of demo shows in the big lecture hall. Don't miss it!
    • I presented a paper to Project Listen Up at the Acoustical Society of America meeting. The paper outlined the construction of a simple and inexpensive apparatus for demonstrating 2D resonances in a circular elastic membrane.
      I have put together a web page with related materials.
    • I gave a colloquium at Indiana University on wormlike miceller fluids.
    • We began a new project on the development of super rugged and flexible acoustic sensors. This project is funded by ARDEC, part of the DOD.
  • July 2009:
    A paper we have recently published in the Journal of the Acoustical Society of America (JASA) [PDF] has been selected for republication in the Virtual Journal of Nanoscience and Technology (Virt. J. Nan. Sci. & Tech. 20 (4), July 2009). This paper reports speed of sound and acoustic attenuation in multiwall carbon nanotube and nylon polymer composites.
  • January 2009:
    I will be in Santiago, Chile at the International Congress on Ultrasonics to give a talk on our high temperature RUS work. A copy of my slides can be downloaded here [ PDF ].

    My graduate student Guanyan Li successfully defended his Ph.D. perspectus! Congratulations to him!

    We are beginning a new project to study elastic moduli of palladium hydrides under high pressure and temperature near the triple point in the Pd-H phase diagram. This is a collaboration with Los Alamos National Lab.
  • November 2008:
    I will be giving the "Hot Topics in Physical Acoustics" address at the ASA meeting in Miami (Nov. 10-14, 2008). Here is a popular version of the section on "Cosmic Sound Waves" [published by AIP].
    I have also posted my slides from the Hot Topics talk. [ PDF ]

    My graduate student, Guanyan Li, will be defending his Ph.D. perspectus this month.