Explanipedia

Characterizing Interconnects to 325 GHz Open

Nicholas R. Jungwirth, Bryan T. Bosworth, Meagan Papac, Aaron M. Hagerstrom, Eric J. Marksz , et al. · 2024

Glass Microwave Microfluidic Devices for Broadband Characterization of Diverse Fluids Open

Jacob T. Pawlik, Tomasz Karpisz, Yasaman Kazemipour, Nicholas Derimow, Sarah R. Evans , et al. · 2024

We demonstrate a glass microwave microfluidic device for determining the permittivity of a wide range of liquid chemicals from 100 MHz to 30 GHz with associated uncertainties. Conventional microwave microfluidic devices use polymer-based m…

Demonstrating Broadside-Coupled Coplanar Waveguide Interconnects to 325 GHz Open

Nicholas R. Jungwirth, Meagan Papac, Bryan T. Bosworth, Aaron M. Hagerstrom, Eric J. Marksz , et al. · 2024

A Distributed Theory for Contactless Interconnects at Terahertz Frequencies Open

Nicholas R. Jungwirth, Bryan T. Bosworth, Aaron M. Hagerstrom, Meagan Papac, Eric J. Marksz , et al. · 2024

We test a multimodal analytical model for distributed contactless interconnects by comparing it to 3-D full-wave simulations. In comparison to 3-D simulations, the model offers insight into how the interconnect works and reduces the comput…

Measuring the permittivity of fused silica with planar on-wafer structures up to 325 GHz Open

F. Bergmann, Nicholas R. Jungwirth, Bryan T. Bosworth, Jérôme Chéron, Christian J. Long , et al. · 2024

Fused silica has become an interesting alternative to silicon for millimeter-wave (mmWave) applications. Unfortunately, there are a few reports on the measurement of fused silica's permittivity above 110 GHz that use electrical rather than…

Quantifying the Effect of Guest Binding on Host Environment Open

Hugh P. Ryan, Zachary S. Fishman, Jacob T. Pawlik, Angela B. Grommet, Małgorzata Musiał , et al. · 2023

The environment around a host-guest complex is defined by intermolecular interactions between the complex, solvent molecules, and counterions. These interactions govern both the solubility of these complexes and the rates of reactions occu…

Broadband Electromagnetic Properties of Engineered Flexible Absorber Materials Open

Luckshitha Suriyasena Liyanage, Connor Smith, Jacob T. Pawlik, Sarah R. Evans, Angela C. Stelson , et al. · 2023

Flexible and stretchable materials have attracted significant interest in wearable electronics and bioengineering fields. Recent developments also incorporate embedded microwave circuits and systems with engineered flexible materials that …

Measuring the anisotropic permittivity tensor of DyScO3 to 110 GHz Open

F. Bergmann, Meagan Papac, Nicholas R. Jungwirth, Bryan T. Bosworth, Tomasz Karpisz , et al. · 2023

DyScO3 (DSO) is an attractive substrate on which to grow epitaxial thin films with extraordinary materials physics. However, its highly anisotropic permittivity makes some measurements exceedingly difficult: For instance, its permittivity …

Physical models and dimensional traceability of 2.4 mm coaxial airline standards for determining systematic uncertainties of calibrated scattering-parameters Open

Jeffrey A. Jargon, Dylan F. Williams, Christian J. Long, Aaron M. Hagerstrom, Angela C. Stelson , et al. · 2023

In this report, we document the models and dimensional traceability of our 2.4 mm coaxial airline standards for performing multiline thru-reflect-line calibrations up to 50 GHz using vector network analyzers. We identify the equations used…

Author Correction: Local negative permittivity and topological phase transition in polar skyrmions Open

Sujit Das, Zijian Hong, Vladimir A. Stoica, Mauro A. P. Gonçalves, Yu‐Tsun Shao , et al. · 2021

Local negative permittivity and topological phase transition in polar skyrmions Open

Sujit Das, Zijian Hong, Vladimir A. Stoica, Mauro A. P. Gonçalves, Yu‐Tsun Shao , et al. · 2020

Physical Models and Dimensional Traceability of WR15 Rectangular Waveguide Standards for Determining Systematic Uncertainties of Calibrated Scattering-Parameters Open

Jeffrey A. Jargon, Dylan F. Williams, Angela C. Stelson, Christian J. Long, Aaron M. Hagerstrom , et al. · 2020

In this report, we document the models and dimensional traceability of our WR15 rectangular waveguide standards for performing multiline thru-reflect-line calibrations from 50 GHz to 75 GHz using vector network analyzers.We identify the eq…

Measurements of Nonlinear Polarization Dynamics in the Tens of Gigahertz Open

Aaron M. Hagerstrom, Eric J. Marksz, Xiaohang Zhang, Xifeng Lu, Christian J. Long , et al. · 2020

Frequency-dependent linear-permittivity measurements are commonplace in the literature, providing key insights into the structure of dielectric materials. These measurements describe a material's dynamic response to a small applied electri…

Targeted chemical pressure yields tuneable millimetre-wave dielectric Open

Natalie M. Dawley, Eric J. Marksz, Aaron M. Hagerstrom, Gerhard Henning Olsen, Megan E. Holtz , et al. · 2019

Theoretical basis of the direct-comparison system for power calibration including equivalent source mismatch Open

Jeffrey A. Jargon, Dazhen Gu, Christian J. Long, Aaron M. Hagerstrom, Angela C. Stelson , et al. · 2019

In this report, we provide derivations for two equations that serve as the basis for the directcomparison system, a transfer apparatus for comparing microwave power sensors.The system consists of a synthesizer that provides a signal to the…

Measuring ion-pairing and hydration in variable charge supramolecular cages with microwave microfluidics Open

Angela C. Stelson, Cynthia Hong, Mitchell C. Groenenboom, Charles A. E. Little, James C. Booth , et al. · 2019

Metal-organic supramolecular cages can act as charged molecular containers that mediate reactions, mimic enzymatic catalysis, and selectively sequester chemicals. The hydration of these cages plays a crucial role in their interactions with…

Label-free detection of conformational changes in switchable DNA nanostructures with microwave microfluidics Open

Angela C. Stelson, Minghui Liu, Charles A. E. Little, Christian J. Long, Nathan D. Orloff , et al. · 2019

Detection of conformational changes in biomolecular assemblies provides critical information into biological and self-assembly processes. State-of-the-art in situ biomolecular conformation detection techniques rely on fluorescent labels or…

Impedance tuning with photoconductors to 40 GHz Open

Jasper Drisko, A. Feldman, Franklyn Quinlan, James C. Booth, Nathan D. Orloff , et al. · 2019

Light is widely used to control a variety of microwave devices, including switches, antennas, and detectors. Here, the authors present a photoconductive device integrated into a coplanar waveguide to tune complex impedances at microwave fr…

Optimizing the linearity in high-speed photodiodes Open

Josue Davila-Rodriguez, Xiaojun Xie, Jizhao Zang, Christian J. Long, Tara M. Fortier , et al. · 2018

Analog photonic links require high-fidelity, high-speed optical-to-electrical conversion for applications such as radio-over-fiber, synchronization at kilometer-scale facilities, and low-noise electronic signal generation. Photodetector no…

Sub‐Nanosecond Tuning of Microwave Resonators Fabricated on Ruddlesden–Popper Dielectric Thin Films Open

Aaron M. Hagerstrom, Xifeng Lu, Natalie M. Dawley, Hari P. Nair, Jordi Mateu , et al. · 2018

Voltage‐tunable dielectric materials are widely used for microwave‐frequency signal processing. Among tunable dielectric thin films, (SrTiO 3 ) n SrO Ruddlesden–Popper (RP) superlattices have exceptionally low loss at high frequencies. Thi…

A Multistate Single-Connection Calibration for Microwave Microfluidics Open

Xiao Ma, Nathan D. Orloff, Charles A. E. Little, Christian J. Long, Isaac E. Hanemann , et al. · 2017

©2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, crea…

High Temperature Superconductor Limiting Filters For Improving Receiver Dynamic Open

Nikkhil Joshi, James C. Booth, Aaron M. Hagerstrom, Nathan D. Orloff, Christian J. Long , et al. · 2016

High-temperature superconductor (HTS) materials display extremely low loss in the superconducting state at RF and microwave frequencies, and their inherently high quality factors enable filters with simultaneous low loss and very high sele…

Lightweight, Flexible, High-Performance Carbon Nanotube Cables Made by Scalable Flow Coating Open

Francesca Mirri, Nathan D. Orloff, Aaron M. Forster, Rana Ashkar, Robert J. Headrick , et al. · 2016

Coaxial cables for data transmission are ubiquitous in telecommunications, aerospace, automotive, and robotics industries. Yet, the metals used to make commercial cables are unsuitably heavy and stiff. These undesirable traits are particul…

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

Nathan D. Orloff, Christian J. Long, Jan Obrzut, Laurent Maillaud, Francesca Mirri , et al. · 2015

Modular apparatus for electrostatic actuation of common atomic force microscope cantilevers Open

Christian J. Long, Rachel J. Cannara · 2015

Piezoelectric actuation of atomic force microscope (AFM) cantilevers often suffers from spurious mechanical resonances in the loop between the signal driving the cantilever and the actual tip motion. These spurious resonances can reduce th…

The Evolution of Carbon Nanotube Network Structure in Unidirectional Nanocomposites Resolved by Quantitative Electron Tomography Open

Bharath Natarajan, Thomas Lam, Christian J. Long, Minhua Zhao, Renu Sharma , et al. · 2015

Carbon nanotube (CNT) reinforced polymers are next-generation, high-performance, multifunctional materials with a wide array of promising applications. The successful introduction of such materials is hampered by the lack of a quantitative…

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