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Search Publications by: Nate Orloff (Fed)

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Displaying 101 - 125 of 159

Multiscale Metrologies for Process Optimization of Carbon Nanotube Polymer Composites

July 18, 2016
Author(s)
Bharath N. Natarajan, Nate Orloff, Rana N. Ashkar, Sagar Doshi, Kevin A. Twedt, Ajay Krishnamurthy, Chelsea S. Davis, Aaron M. Forster, Erik Thostenson, Jan Obrzut, Renu Sharma, James Alexander Liddle
Carbon nanotube (CNT) polymer composites are materials with attractive multifunctional properties that are becoming used in a growing range of commercial applications. With the increasing demand for these materials, it is imperative to develop methods for

A trade-off between the mechanical strength and microwave electrical properties of functionalized and irradiated carbon nanotube sheets

April 4, 2016
Author(s)
Tiffany S. Williams, Nate Orloff, James S. Baker, Sandi G. Miller, Bharath N. Natarajan, Jan Obrzut, Linda S. McCorkle, Marisabel Lebron-Colon, James Gaier, Michael A. Meador, James Alexander Liddle
Carbon nanotube sheets are novel implementation of carbon nanotubes that enable the tailoring of electrical and mechanical properties for applications in the automotive and aerospace industries. Small molecule functionalization and/or post-processing

Lightweight, flexible, high-performance carbon nanotube cables by scalable flow coating*

January 21, 2016
Author(s)
Nathan D. Orloff, Francesca Mirri, Aaron M. Forster, Rana NMN Ashkar, Robert Headrick, E. A. Bengio, Christian J. Long, April Choi, Yimin Luo, Angela R. Hight Walker, Paul Butler, Kalman D. Migler, Matteo Pasquali
Coaxial cables for data transmission are ubiquitously used in telecommunications, aerospace, automotive and robotics industries. Unfortunately, the metals used to make commercial cables are heavy and stiff. These undesirable traits are particularly

Noncontact conductivity and dielectric measurement for high throughput roll-to-roll nanomanufacturing

November 23, 2015
Author(s)
Nathan D. Orloff, Christian J. Long, Jan Obrzut, Laurent Millaud, Francesca Mirri, Thomas R. Kole, Robert D. McMichael, Mattei Pasquali, Stephan J. Stranick, James A. Liddle
Advances in roll-to-roll processing of graphene [1] and carbon nanotube [2] have at last led to the continuous production of high-quality coatings and filaments, ushering in a wave of applications for flexible [3], [4] and wearable [5] electronics, woven

Software for Dielectric characterization by microwave cavity perturbation corrected for non-uniform fields*

September 1, 2014
Author(s)
Nathan D. Orloff, Jan Obrzut, Christian J. Long, Thomas F. Lam, Pavel Kabos, David R. Novotny, James C. Booth, James A. Liddle
This software package was developed to analyze microwave cavity perturbation data in order to determine material dielectric properties. Example software is provided to assist with data acquisition and organization. Specifically, it is de-signed to be used

Dielectrofluidics for Electronic-Based Chemical and Particle Analysis

August 18, 2014
Author(s)
James C. Booth, Spencer T. Egan, Charles A. Little, A Padilla, Yu Y. Wang, Nathan D. Orloff
The interactions of electromagnetic fields with matter are described by means of the polarization and magnetization of the material under study. Analogous to the way that magnetofluidics seeks to exploit magnetic interactions for sensing and manipulating

Dielectric characterization by microwave cavity perturbation corrected for non-uniform fields

July 23, 2014
Author(s)
Nathan D. Orloff, Jan Obrzut, Christian J. Long, Thomas F. Lam, James C. Booth, David R. Novotny, James A. Liddle, Pavel Kabos
The non-uniform fields that occur due to the slot in the cavity through which the sample is inserted and those due to the sample geometry itself decrease the accuracy of dielectric characterization by cavity perturbation at microwave frequencies. To

Non-contact Conductance Measurement of Nanosize Objects using Reasonant Cavity

May 15, 2014
Author(s)
Jan Obrzut, Nathan D. Orloff, Oleg A. Kirillov
A cavity perturbation method is used to determine conductance of small volume nano-carbon materials. These are the building blocks of nanostructured materials and devices, and therefore their electrical characteristics are important in the materials

Electro-Thermo-Mechanical Model for Bulk Acoustic Wave Resonators

November 30, 2013
Author(s)
Eduard Rocas, Juan C. Collado Gomez, Jordi Mateu, Nathan D. Orloff, James C. Booth, Robert Aigner
We present the electro-thermo-mechanical constitutive relations, expanded up to the third order, for a BAW resonator. The relations obtained are implemented into a circuit model, which is validated with extensive linear and nonlinear measurements. The

Exploiting dimensionality and defect mitigation to create tunable microwave dielectrics

October 23, 2013
Author(s)
Nathan D. Orloff, C H. Lee, T Birol, J A. Mundy, V. Goian, R. Haislmaier, E. Vlahos, Y. Kim, J. D. Brock, Y Zhu, R. Uecker, V. Gopalan, S. Kamba, X X. Xi, D A. Muller, I. Takeuchi, James C. Booth, C. J. Fennie
The miniaturization and integration of frequency-agile microwave circuits—tunable filters, resonators, phase shifters and more—with microelectronics offers tantalizing device possibilities, yet requires thin films whose dielectric constant at GHz

A Large-Signal Model of Ferroelectric Thin-Film Transmission Lines"

December 1, 2011
Author(s)
Eduard Rocas, Juan C. Collado Gomez, Jordi Mateu, Nate Orloff, James Booth, Juan M. O'C allaghan
"This work evaluates the microwave nonlinear properties and tuning at RF frequencies of ferroelectric Ba0.3Sr0.7TiO3 thin-films by on-wafer measurements of the second and third-order harmonics and intermodulation products of several coplanar transmission

Manipulating Particle Trajectories with Phase-control in Surface Acoustic Wave Microfluidics

November 14, 2011
Author(s)
Nathan D. Orloff, Jaclyn R. Dennis, Marco Cecchini, Ethan Schonbrun, Eduard Rocas, Yu Y. Wang, David R. Novotny, Raymond W. Simmonds, John M. Moreland, Ichiro Takeuchi, James C. Booth
We present a 91 MHz surface acoustic wave resonator with integrated microfluidics that includes a flow focus, an expansion region, and a binning region. We demonstrate the ability to change the position of the acoustic nodes by varying the electronics

Characterization of the First Order Nonlinear Stiffened Elasticity of the Piezoelectric Layer in Bulk Acoustic Wave Resonators

May 1, 2011
Author(s)
Juan C. Collado Gomez, Eduard Rocas, Jordi Mateu, Nathan D. Orloff, James C. Booth, Alberto Padillo, Juan Callaghan
This work proposes a procedure to characterize the intrinsic nonlinearities of bulk acoustic wave resonators by performing one port measurements of the second harmonic and second order intermodulation spurious signals. Closed-form expressions have been