Cullen School of Engineering

Location

Dept. of Electrical & Computer Engineering
N308 Engineering Building 1
Houston, Texas 77004-4005
Phone: 713-743-4400
Fax: 713-743-4444
Department: ece [at] egr [dot] uh [dot] edu
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Faculty

Dr. Paul Ruchhoeft

Associate Professor

N 308 Engineering Building 1

Houston, Texas 77204-4005

Tel: 713-743-4485 | Fax: 713-743-4444

Email: pruchhoeft [at] uh [dot] edu

Education

  • BS Electrical Engineering, University of Texas, Austin, TX
  • MSEE Electrical Engineering, University of Houston, Houston, TX
  • PhD Electrical Engineering, University of Houston, Houston, TX

Professional Experience

2007-present

Associate Professor

2001-2007

Assistant Professor


Classes

Courses Taught at UH

  • ECE 3455/3355 Electronics
  • ECE 6397 Microlithography
  • ECE 4334 Capstone Design
  • ECE/CHEE/MECE 5321 and ECE 6314 Nanoscale Design and Fabrication

Awards and Honors

  • W. T. Kittinger Outstanding Teacher Award, Cullen College of Engineering, University of Houston, 2012
  • Distinguished Young Alumnus Award, University of Houston Engineering Alumni Association, 2008
  • Outstanding Teacher Award, Cullen College of Engineering, University of Houston, 2005
  • Young Faculty Research Excellence Award, Cullen College of Engineering, University of Houston, 2004

Research

Research Interests

  • Nanolithography, nanofabrication, diagnostic devices, and sensors. Prof. Ruchhoeft's research interests lie in the development of a parallel printing process with nanoscale resolution using energetic helium ions and atoms and the development of new low-cost stencil masks used in this patterning process. Applications include the patterning of periodic nano-scale patterns for engineered nanoparticles, infrared metal-mesh filters, and water filtration membranes. He is also interested in modeling of resist exposure and development processes for electron, ion, and atom beam lithography, and has authored numerous papers in these areas.


Funded Research

  • "Creating Tunable Adaptive Boiling Heat Transfer Surfaces with Electrowetting," National Science Foundation, 07/01/2012 - 06/30/2015

    "Fabrication of Micro-retroreflectors," University of British Columbia, 8/1/2010 - 8/1/2011

    "Engineered Gold Nanoparticles for the Detection of Solid Cancers: Investigation of Shape-Dependent Biological Dynamics," Alliance for Nanohealth, 9/1/2009 - 9/1/2011

    "Noninvasive Optical Sensing of Micro-Retroreflectors in Turbid Media and Tissue," National Science Foundation, 5/1/2009 - 4/30/2012

    "Fabrication and Suspension of Biologically Active Micron-scale Retro-reflectors," University of British Columbia, 11/1/2008 - 11/1/2009

    "Towards the development of a syndrome-specific diagnostic tool," Western Regional Center for Biodefense and Emerging Infectious Diseases (NIH), 3/1/2009 - 3/1/2014

    "Nanoscale Patterning of Magnetic Recording Medium: Device Physics and Fabrication of Imprint Templates," State of Texas Advanced Research Program, 05/15/2008 - 5/14/2010

    "Towards the development of a syndrome-specific diagnostic tool," Western Regional Center for Biodefense and Emerging Infectious Diseases (NIH), Developmental Project Awards, 3/1/2008 - 2/28/2009

    "Single Ferromagnetic Nanocontact Based Devices as Magnetic Field Sensors," Department of Defense, 10/15/06 - 10/15/09

    "Development of implantable glucose monitor technology using self-assembling micro-retroreflectors," State of Texas Advanced Research Program, 5/15/2006 - 5/15/2008

    "A highly sensitive, low-labor pathogen detector based on retroreflector-linked immunosorbent assay," Western Regional Center for Biodefense and Emerging Infectious Diseases (NIH), 3/01/2006 - 2/28/2008

    "MRI: Development of Polymorfos, a versatile source of energetic ions and atoms for nanostructure manufacturing," National Science Foundation, 09/01/2005 - 09/01/2008

    "Atom-beam nanolithography for manufacturing large-areas of highly permeable membrane filters," Advanced Technology Program, State of Texas, 01/01/2004 - 8/15/2006

    "Thermophotovoltaic Radioisotope Power Conversion Technology," NASA, 10/01/2003 - 10/01/2006

    "NIRT: Nano-pantography," NIRT, National Science Foundation, 08/15/2003 - 08/14/2007

    "Feasibility Study of a 10 nm Printing Technology," GEAR Program at the University of Houston, 09/01/2002 - 08/31/2003

    "Nanolithography using neutral beams," New Faculty Research Program at the University of Houston, 01/01/2002 - 8/31/2002

    "Nanofabrication and Performance Evaluation of a New Class of Membrane Filters for Water Purification," Texas Advanced Research Program, 1/1/2002 - 8/31/2004

    "Metalization of Focal Surface Arrays," Defense Advanced Research Projects Agency, 4/11/2000 - 1/31/2003


Presentations

Selected Publications

Selected Publications

  • S. Moungthai, N. Mahadevapuram, P. Ruchhoeft and G. E. Stein, "Direct Patterning of Conductive Polymer Domains for Photovoltaic Devices," ACS Applied Materials & Interfaces (2012).

    J. Litvinov, A. Nasrullah, T. Sherlock, Y-J. Wang, P. Ruchhoeft, and R. C. Willson, "High-Throughput Top-Down Fabrication of Uniform Magnetic Particles," PLoS ONE 7(5), e37440 (2012).

    T. Sherlock, A. Nasrullah, J. Litvinov, E. Cacao, J. Knoop, S. Kemper, K. Kourentzi, A. Kar, P. Ruchhoeft, and R. C. Willson, "Suspended, micron-scale corner cube retroreflectors as ultra-bright optical labels," J. Vac. Sci. Technol. B, 29(6), 06FA01-06FA01 (2011).

    S. N. Ivers, S. A. Baranov, T. Sherlock, K.  Kourentzi, P. Ruchhoeft, R. C. Willson, and K. V. Larin, "Depth-resolved imaging and detection of micro-retroreflectors within biological tissue using Optical Coherence Tomography," Biomedical Optics Express, 1(2), 367-377 (2010).

    D. T. Smith, L. Chang, J. O. Rantschler, V. Kalatsky, P. Ruchhoeft, S. Khizroev, and D. Litvinov, "Size Distribution and Anisotropy Effects on the Switching Field Distribution of Co/Pd Multilayered Nanostructure Arrays," IEEE Transactions on Magnetics, 45(10), 3554-3557 (2009).

    A. Nasrullah, D. Smith, T. Sherlock, P. Ruchhoeft, and D. Litvinov, "Near neighbor averaging: a technique for improving image uniformity in aperture array lithography," J. Vac. Sci. Technol. B, 27(6), 2674-2678 (2009).

    L. Xu, A. Nasrullah, Z. Chen, M. Jain, P. Ruchhoeft, D. J. Economou, and V. M. Donnelly, "Etching of nanopatterns in silicon using nanopantography," Applied Physics Letters 92, 013124 (2008).

    D. Litvinov, V. Parekh, C. E, D. Smith, J. Rantschler, P. Ruchhoeft, D. Weller, and S. Khizroev, "Nanoscale bit-patterned media for next generation data storage systems," Journal of Nanoelectronics and Optoelectronics, 3(2), 93-112 (2008).

    D. Litvinov, V. Parekh, C. E, D. Smith, J. Rantschler, P. Ruchhoeft, D. Weller, and S. Khizroev, "Recording physics, design considerations, and fabrication of nanoscale bit-patterned media," IEEE Transactions on Nanotechnology, 7(4), 463-476 (2008).

    C. E, V. Parekh, P. Ruchhoeft, S. Khizroev, and D. Litvinov, "Magnetization reversal in patterned, (Co/Pd)(n) multilayers," Journal of Applied Physics, 103(6), 063904 (2008).

    V. A. Parekh, A. Ruiz, P. Ruchhoeft, S. Brankovic, and D. Litvinov, "Close-packed noncircular nanodevice pattern generation by self-limiting ion-mill process," Nano Letters, 7(10), 3246-3248, (2007).

    D. Litvinov, Ch. E, V. Parekh, D. Smith, J. Rantschler, S. Zhang, W. Donner, T. R. Lee, P. Ruchhoeft, D. Weller, and S. Khizroev, "Design and fabrication of high anisotropy nanoscale bit-patterned magnetic recording medium for data storage applications (invited)," The Electrochemical Society, 3(25) 249-258 (2007).

    V. Parekh, C. E, D. Smith, A. Ruiz, J. C. Wolfe, P. Ruchhoeft, E. Svedberg, S. Khizroev and D. Litvinov, "Fabrication of a high anisotropy nanoscale patterned magnetic recording medium for data storage applications," Nanotechnology 17, 2079-2082 (2006).

    R. Qiang, J. Chen, T. Zhao, K. Han, A. Ruiz, P. Ruchhoeft, and M. Morgan, "Effects of manufacturing artifacts on infrared filter performance," Microwave and Optical Technology Letters, 48(9), 1749-1754, (2006).

    V. Zomorrodian, B. Craver, G. Radhakrishnan, M. Patel, E. J. Charlson, P. Ruchhoeft, and J. C. Wolfe, "Threshold voltage adjustment on spherical, single-crystal silicon substrates by focused ion beam implantation," J. Vac. Sci. Technol. B, 24(6), 3221-3226 (2006).

    V. Parekh, A. Ruiz, P. Ruchhoeft, H. Nounu, D. Litvinov, and J. C. Wolfe, "Estimation of scattered particle exposure in ion beam aperture array lithography," J. Vac. Sci. Technol. B, 24(6), 2915-2919 (2006).

    K. Han, W. Xu, A. Ruiz, P. Ruchhoeft, and S. Chellam, "Fabrication and characterization of polymeric microfiltration membranes using aperture array lithography," Journal of Membrane Science, Vol 249, Issues 1-2, pages 193-206 (2005).

    S. Wang, J. Chen, and P. Ruchhoeft, "An ADI-FDTD method for periodic structures," IEEE Transactions on Antennas and Propagation, 53(7), 2343-2346 (2005).

    R. Qiang, J. Chen, T. Zhao, S. Wang, P. Ruchhoeft, and M. Morgan, "Modeling of infrared bandpass filters using a three-dimensional FDTD method," Electronics Letters, 41(16), 914-915 (2005).

    L. Xu, D. J. Economou, V. M. Donnelly, and P. Ruchhoeft, "Extraction of a nearly monoenergetic ion beam using a pulsed plasma," Applied Physics Letters 87, 041502 (2005).

    K. Han, M. Morgan, A. Ruiz, V. S. Charan, and P. Ruchhoeft, "Rapid prototyping of infrared bandpass filters using aperture array lithography," J. Vac. Sci. Technol. B, 23(6), 3158-3163 (2005).

    L. Xu, S. C. Vemula, M. Jain, S. Ki Nam, V. M. Donnelly, D. J. Economou, and P. Ruchhoeft, "Nanopantography: a new method for massively parallel nanopatterning over large areas," Nano Letters 5(12), 2563-2568 (2005).


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