David Arnold's Research Group

Camilo wins Best Poster at Frontiers in Biomagnetic Particles Conference

Submitted by David Arnold on Wed, 06/24/2015 - 12:44pm

Camilo Velez Cuervo was awarded "Best Poster" for "Analysis of Microscale Permanent Magnets for Capturing Magnetic Particles in Biological Fluids" at the 2015 Frontiers in Biomagnetic Particles Conference in Telluride, CO.  Congratulations to Camilo, Alexandra, and other co-authors!

IMG @ Transducers 2015

Submitted by David Arnold on Mon, 03/30/2015 - 8:14am

IMG will present multiple papers at the Transducers 2015 conference in Anchorage, AK June 21-25, 2015.  Congratulations to all authors!

  • V. F. Tseng, L. We, and H. Xie, "Inductive eddy current sensing as a displacement sensing mechanism for large piston/rotation micromirrors" (oral)
  • X. Zhang, R. Zhang, S. Koppal, L. Butler, X. Cheng, and H. Xie, "MEMS mirrors submerged in liquid for wide-angle scanning" (oral)
  • X. Zhang, B. Li, and H. Xie, "A robust, fast electrothermal micromirror with symmetric bimorph actuators made of copper/tungsten" (oral)
  • W. Wang, J. Chen, A. S. Zivkovic, C. Duan and H. Xie "A silicon based Fourier transform spectrometer based on an open-loop controlled electrothermal MEMS mirror" (oral)
  • D. Mills, D. Blood, and M. Sheplak, “Development of a sapphire optical wall shear stress sensor for high-temperature applications” (poster)
  • R.E. Carroll, N. Garraud, J.A. Little, M.J. Mazzoleni, B.P. Mann, and D.P. Arnold, "Investigation of wave propagation phenomena in microfabricated arrays of nonlinearly coupled oscillators” (poster)
  • D. P. Arnold, "Electroplated CoPt Permanent Magnets for MEMS" (invited talk)

Modeling of the Magnetic Particle Imaging Signal Due to Magnetic Nanoparticles

Magnetic Particle Imaging (MPI) is a new tomographic imaging technique that maps the spatial distribution of iron oxide magnetic nanoparticles (MNPs) in real time and with spatial resolution that is on par or better than other biomedical imaging techniques. In this project, we will develop a theoretical foundation relating the properties of MNPs and MPI magnetic field conditions to the MPI signal strength and resolution. These efforts will yield design rules that will guide the rational design of future generations of MNP tracers for MPI. The proposed research will enable development of a novel biomedical imaging technique capable of high resolution real time imaging using nontoxic tracers suitable for a variety of biomedical applications.

IMG Faculty Help Launch the NSF MIST Center

Submitted by David Arnold on Fri, 01/09/2015 - 10:28am

The NSF Multi-functional Integrated System Technology Center (MIST Center) held it’s Kickoff Meeting on Dec. 11-12, 2014. Led by IMG faculty Dr. Nishida and Dr. Arnold, and in partnership with UCF, the mission of the MIST Center is to facilitate integration of novel materials, processes, devices, and circuits into multi-functional systems through research partnerships between university, industry, and government stakeholders. With inaugural membership from eight organizations, the MIST Center selected 8 projects (6 at UF and 2 at UCF) to be conducted during 2015. The UF projects are:

  • Directed Nanoparticle Assembly by Electrophoretic Deposition (PI: Dr. Arnold)
  • Laser Micromachining of 3-D Miniature Parts in Hard Materials (PI: Dr. Sheplak)
  • Technology Development for Harsh Environment Microsensors (PI: Dr. Sheplak)
  • High-Performance CoPt Micromagnets (PI: Dr. Arnold)
  • Compact Array Antennas with High Gain, Power Efficiency, and EMI Immunity in a System-in-Package Platform (PI: Dr. Yoon)
  • Ferroelectric HfO2 for Energy Storage and Non-volatile Memory Applications (PI: Dr. Nishida)

IMG Kickoff Meeting

Submitted by David Arnold on Tue, 08/05/2014 - 4:20pm
Event date: 
Fri, 08/22/2014 - 5:00pm to 6:30pm

We will hold an IMG Kickoff meeting on Friday August 22nd in Larsen 310, starting at 1 pm, immediately after our Friday BBQ.  This meeting is mandatory for all IMG personnel.  We will provide an overview of IMG to new students, review lab organization/training, emphasize importance of the wiki, and review safety information.

IMG @ Hilton Head 2014

Submitted by David Arnold on Wed, 03/12/2014 - 11:37am

IMG will present six papers at the upcoming Hilton Head Workshop in June 2014 (www.hh2014.org):

  • N. Garraud and D. P. Arnold, “Characterization of the rotational dynamics of magnetic micro-discs in suspension” (poster)
  • J. Li, V. Tseng, and H. Xie, "Wafer-level fabrication of power inductors in silicon for compact dc-dc converters” (poster)
  • D. Mills, T.-A. Chen, and M. Sheplak, “A MEMS optical moiré shear stress sensor for harsh environment applications” (poster)

  • O. D. Oniku, A. Garraud, W. C. Patterson, and D. P. Arnold, “Development and modeling of a micromagnetic imprinting process” (poster)
  • W. C. Patterson, E. E. Shorman, N. Garraud, and D. P. Arnold, “A magnetic microscope for quantitative mapping of the stray fields from magnetic microstructures” (poster)
  • C. Velez, I. Torres-Díaz, O. D. Oniku, L. Maldonado-Camargo, C. Rinaldi, and D. P. Arnold, “Fabrication of Magnetic Microstructures by In Situ Crosslinking of Magnetically Assembled Nanoparticles” (poster)