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Faculty

Paul Ruchhoeft
Dr. Paul Ruchhoeft
Associate Professor
Office Location N308 Engineering Building 1
Phone 713-743-4485
Fax 713-743-4444
Email pruchhoeft [at] uh.edu
Publications
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
Associate Professor, 2007-present
Assistant Professor, 2001-2007
Classes
ECE 3455/3355 Electronics
ECE 6397 Microlithography
ECE 4334 Capstone Design
ECE/CHEE/MECE 5321 and ECE 6314 Nanoscale Design and Fabrication
Awards & 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 Interests

Nanolithography, Nanofabrication, Diagnostic devices, Engineered nanoparticles, Beam-activated surfaces

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
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).