publications

For the most up-to-date publication information, please refer to my CV or my Google Scholar Profile.

2023

1. A Dynamics-Inspired Model for Phonation-Induced Aerosolization

   Corey Lynn Murphey, Allison Hilger, and Elizabeth Bradley

   Jan 2023

   Abs

   Human phonation induces the formation and ejection of aerosols from the mouth. In infectious speakers, phonation- induced aerosolization can facilitate the transmission of airborne viruses. However, the formation of such aerosols is challenging to study experimentally due to the complex structure of the larynx, the inability to directly measure aerosol generation at the laryngeal level, and the length scale at which fluid atomization occurs. To gain insight into these complicated dynamics, we have developed a computational framework that models the ejection, motion, and subsequent breakup of sessile liquid originating on the surface of the vocal folds. Much like Robert Shaw’s classic dripping faucet system, droplets ejecting from a vibrating elastic surface can be modeled as a damped simple harmonic oscillator with nonlinear springs and dampers in which mass is ejected with each oscillation. The framework proposed here combines a droplet-ejection model that is based on a Rayleigh-Taylor instability with a model of nonlinear vibrational elastodynamics induced by fluid-structure interaction between exhaled air and the vocal fold tissues. Its output yields a spray distribution that we can compare to experimental aerosol size distributions collected during laryngeal phonation.

2020

1. United States Patent: D881340 - Showerhead and Arm

   Philip V. Winter, Carlos Gomez Andonaegui, Gabriel Parisi-Amon, and 11 more authors

   Apr 2020

2019

1. United States Patent: 10421083 - Immersive Showerhead

   Philip Winter, Carlos Gomez Andonaegui, Gabriel Parisi-Amon, and 3 more authors

   Sep 2019

   Abs

   One variation of a showerhead includes: a body defining a fluid circuit, a first region on a ventral side of the body, and a second region adjacent the first region on the ventral side of the body; a set of hollow cone nozzles distributed within the first region, fluidly coupled to the fluid circuit, and discharging sprays of fluid droplets within a first size range; a set of flat fan nozzles arranged within the second region, fluidly coupled to the fluid circuit, and discharging sprays of fluid droplets within a second size range; and a set of orifices fluidly coupled to the fluid circuit and discharging fluid drops between sprays discharged from the set of hollow cone nozzles and sprays discharged from the flat fan nozzles, fluid drops discharged from the set of orifices within a third size range exceeding the first size range and the second size range.

2. United States Patent: D855759 - Shower Wand

   Philip V. Winter, Carlos Gomez Andonaegui, Gabriel Parisi-Amon, and 11 more authors

   Aug 2019

2018

1. United States Patent: 9925545 - Immersive Showerhead

   Gabriel Parisi-Amon, Corey Lynn Murphey, Emilio Gomez Varela, and 2 more authors

   Mar 2018

   Abs

   One variation of a showerhead includes: a body defining a fluid circuit, a first region on a ventral side of the body, and a second region adjacent the first region on the ventral side of the body; a set of hollow cone nozzles distributed within the first region, fluidly coupled to the fluid circuit, and discharging sprays of fluid droplets within a first size range; a set of flat fan nozzles arranged within the second region, fluidly coupled to the fluid circuit, and discharging sprays of fluid droplets within a second size range; and a set of orifices fluidly coupled to the fluid circuit and discharging fluid drops between sprays discharged from the set of hollow cone nozzles and sprays discharged from the flat fan nozzles, fluid drops discharged from the set of orifices within a third size range exceeding the first size range and the second size range.

2. United States Patent: 9931651 - Immersive Showerhead

   Philip Winter, Carlos Gomez Andonaegui, Gabriel Parisi-Amon, and 3 more authors

   Apr 2018

   Abs

   One variation of a showerhead includes: a body defining a fluid circuit, a first region on a ventral side of the body, and a second region adjacent the first region on the ventral side of the body; a set of hollow cone nozzles distributed within the first region, fluidly coupled to the fluid circuit, and discharging sprays of fluid droplets within a first size range; a set of flat fan nozzles arranged within the second region, fluidly coupled to the fluid circuit, and discharging sprays of fluid droplets within a second size range; and a set of orifices fluidly coupled to the fluid circuit and discharging fluid drops between sprays discharged from the set of hollow cone nozzles and sprays discharged from the flat fan nozzles, fluid drops discharged from the set of orifices within a third size range exceeding the first size range and the second size range.

3. United States Patent: D810234 - Showerhead and Adjustable Bracket

   Philip Winter, Carlos Gomez Andonaegui, Gabriel Parisi-Amon, and 12 more authors

   Feb 2018
4. United States Patent: D810233 - Shower Wand and Adjustable Mount

   Philip Winter, Carlos Gomez Andonaegui, Gabriel Parisi-Amon, and 12 more authors

   Feb 2018

2016

1. Full Steam Ahead

   Gabriel Parisi-Amon, and Corey Lynn Murphey

   ANSYS Advantage, Feb 2016

   Abs

   Startup Nebia is poised to transform the experience of taking a shower. While developing its innovative new showerhead, the company’s engineers made...

2013

1. Not So Obvious: An Introduction to Patent Law and Strategy

   Jeff Schox

   Feb 2013

2011

1. Computational Simulation of Biventricular Pacing in an Asymptomatic Human Heart

   Corey L. Murphey, Jonathan Wong, and Ellen Kuhl

   In SBC2011, Jun 2011

   Abs

   Cardiac resynchronization therapy (CRT) through biventricular stimulation was first used in the early 1990s as a treatment option for patients with systolic heart failure, intraventricular conduction delay, and other cardiac arrhythmias [1]. CRT, also known as biventricular pacing (BiVP), is an alternative to right ventricular stimulation, which induces dyssynchronous ventricular contraction. In BiVP, three pacing leads are usually placed on the myocardium of the right atrium, the right ventricle, and the left ventricle in the distal cardiac vein. Because there are no standardized loci for lead placement in BiVP, physicians rely on trial and error when inserting pacemaker leads and use electrocardiograms (ECG) to determine the effectiveness of the BiVP lead placement. The ECG measures the electrical conduction, contraction pacing, and projections of the anatomy of the myocardium. Abnormalities in the sinusoidal waves of the ECG reveal problems. Therefore, the ECG can depict a quantitative representation of the effectiveness of biventricular pacing lead placement.

2. Computational Simulation of Biventricular Pacing in a Human Heart

   Corey Lynn Murphey, Jonathan Wong, and Ellen Kuhl

   In Proceedings of the IUTAM Symposium on Computer Models in Biomechanics, Jun 2011